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000
FXUS65 KTFX 240544
AFDTFX

Area Forecast Discussion
National Weather Service Great Falls MT
1145 PM MDT MON MAY 23 2016

UPDATED AVIATION SECTION

.DISCUSSION...
Update forthcoming. Have increased snow amounts for Kings Hill. Snow
continues overnight and a few more inches are likely to fall at that
location. Remainder of the forecast looks on track. Periods of light
rain will continue overnight. Temperatures look good.

&&

.AVIATION...
UPDATED 0545Z.
With an upper level disturbance over southern Sask. expect low/mid
clouds across much of the region with light showers continuing to
affect mainly Central/Southwest MT through the period. Mountains will
be obscured at times especially over Central/Southwest MT. IFR/LIFR
conditions will be possible in areas of low clouds/light rain at
times. Brusda

&&

.PREV DISCUSSION...230 PM MDT Mon May 23 2016

Tonight through Wednesday...A low pressure trof continues to affect
Central and Southwest Montana and water vapor pics show a very moist
airmass still moving across the area. Dynamics will remain weak
through Wednesday although a disturbance will rotate around the
upper level low tonight. An associated push of cool, moist air will
cross the border early this evening and some showery activity will
linger. Weak instability will develop Tuesday with afternoon showers
but any thunderstorm activity will be very isolated. Temperatures
continue to trend warmer through Wednesday and the airmass again
will become unstable during the afternoon...and with a better chance
of thunderstorms. However, CAPE and shear values indicate little
chance of severe development. Temperatures will be trending higher
through Wednesday but still remain below seasonal normals. Zelzer

Wednesday night through Memorial Day...A broad upper level trough
remains in place across western N America late this week through the
upcoming weekend. Initially, only weak shortwave energy moving
through a NW to W flow aloft Wednesday night through Thursday will
bring a chance of mainly afternoon and evening convective
precipitation with temperatures near seasonal averages Thursday.
Friday through the upcoming holiday weekend, models are in large
scale agreement to bring an upper level low south from the Gulf of
AK into the PAcific NW and gradually have this system edge east
toward the Northern Rockies late this weekend into early next week.
In general, this will bring increasing precipitation chances to the
region and somewhat cooler temperatures as the flow aloft becomes
southerly Friday and Saturday and likely continues through much of
the upcoming weekend as the upper low approaches.
Differences in smaller scale details however increase through the
upcoming weekend as the GFS keeps the upper low center farther west
over the Pacific NW through much of the weekend while the ECMWF and
CMC models take the system into northern Rockies/across MT
respectively much earlier in the weekend. Hoenisch

&&

.HYDROLOGY...
Scattered showers will continue over the region for the next few
days. No new additional flooding is expected at this time as
rainfall totals generally remain less than one inch.
However...models suggest another wet system will affect the region
next weekend. Thus some hydrologic highlights might be needed for
portions of the region and an Hydrologic Outlook has been issued
to highlight this event.

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  39  58  40  65 /  50  30  20  20
CTB  37  57  37  65 /  50  30  20  20
HLN  41  60  43  65 /  40  40  30  30
BZN  37  60  39  61 /  40  40  30  40
WEY  30  52  34  50 /  30  40  50  60
DLN  37  58  39  58 /  30  50  40  50
HVR  40  60  41  68 /  30  30  10  20
LWT  39  57  40  62 /  40  40  30  50

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$

weather.gov/greatfalls





000
FXUS65 KTFX 232351
AFDTFX

Area Forecast Discussion
National Weather Service Great Falls MT
550 PM MDT MON MAY 23 2016

UPDATED AVIATION SECTION

.DISCUSSION...

Tonight through Wednesday...A low pressure trof continues to affect
Central and Southwest Montana and water vapor pics show a very moist
airmass still moving across the area. Dynamics will remain weak
through Wednesday although a disturbance will rotate around the
upper level low tonight. An associated push of cool, moist air will
cross the border early this evening and some showery activity will
linger. Weak instability will develop Tuesday with afternoon showers
but any thunderstorm activity will be very isolated. Temperatures
continue to trend warmer through Wednesday and the airmass again
will become unstable during the afternoon...and with a better chance
of thunderstorms. However, CAPE and shear values indicate little
chance of severe development. Temperatures will be trending higher
through Wednesday but still remain below seasonal normals. Zelzer

Wednesday night through Memorial Day...A broad upper level trough
remains in place across western N America late this week through the
upcoming weekend. Initially, only weak shortwave energy moving
through a NW to W flow aloft Wednesday night through Thursday will
bring a chance of mainly afternoon and evening convective
precipitation with temperatures near seasonal averages Thursday.
Friday through the upcoming holiday weekend, models are in large
scale agreement to bring an upper level low south from the Gulf of
AK into the PAcific NW and gradually have this system edge east
toward the Northern Rockies late this weekend into early next week.
In general, this will bring increasing precipitation chances to the
region and somewhat cooler temperatures as the flow aloft becomes
southerly Friday and Saturday and likely continues through much of
the upcoming weekend as the upper low approaches.
Differences in smaller scale details however increase through the
upcoming weekend as the GFS keeps the upper low center farther west
over the Pacific NW through much of the weekend while the ECMWF and
CMC models take the system into northern Rockies/across MT
respectively much earlier in the weekend. Hoenisch

&&

.AVIATION...
UPDATED 2350Z.
Circulation around an upper disturbance over southern Saskatchewan
continues to bring clouds and precipitation to an area mainly along
and north and east of a KHLN to KBZN line. Precipitation should
continue overnight. MVFR/IFR conditions prevail along and north and
east of the KHLN-KBZN line with VFR conditions to the south and
west. Mountains obscured.

&&

.HYDROLOGY...
Scattered showers will continue over the region for the next few
days. No new additional flooding is expected at this time as
rainfall totals generally remain less than one inch.
However...models suggest another wet system will affect the region
next weekend. Thus some hydrologic highlights might be needed for
portions of the region and an Hydrologic Outlook has been issued
to highlight this event.

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  39  58  40  65 /  50  30  20  20
CTB  37  57  37  65 /  50  30  20  20
HLN  41  60  43  65 /  40  40  30  30
BZN  37  60  39  61 /  40  40  30  40
WEY  30  52  34  50 /  30  40  50  60
DLN  37  58  39  58 /  30  50  40  50
HVR  40  60  41  68 /  30  30  10  20
LWT  39  57  40  62 /  40  40  30  50

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$

weather.gov/greatfalls





000
FXUS65 KTFX 231118
AFDTFX

Area Forecast Discussion
National Weather Service Great Falls MT
518 AM MDT MON MAY 23 2016

Updated Aviation Discussion

.DISCUSSION...
Today through Wednesday...A cut off upper level low will continue
to spin over Southern Alberta today...and generally reside over
this region over the next few days as well. As a
result...moisture will pin-wheel around this upper level low over
the next few days. Thus there is a chance for precipitation
through the entire short term period...with North Central MT
having the highest chances for rainfall today and Southwest MT
having the highest chances on Wednesday. Overall precipitation
amounts will generally be on the light side most days...with
locations under the steadier rainfall receiving about 0.10 to 0.20
inches of rainfall. There will be some breaks in the precipitation
at times...especially along the I-15 corridor from Great Falls to
Cut Bank where gusty downslope winds will continue. These
downslope winds will limit the precip a bit in this region. In
terms of temperatures...expect below normal afternoon temperatures
through Wednesday. Temperatures will be the coolest today...with
temperatures becoming a touch warmer each day for Tue and Wed.

For the winter weather advisory over the Rocky Mountain
Front...snow will continue over the mountains...generally above
5000 feet through today. The GFS/EC model continue the snowfall
through tonight...and there is the potential the winter weather
advisory could be extended later this morning. The morning shift
will look at this closer when the 12z runs come. Brusda

Wednesday night through Memorial Day...A broad upper level trough
remains in place across western N America late this week through
the upcoming weekend. Initially, only weak shortwave energy moving
through a NW to W flow aloft Wednesday night through Thursday will
bring a chance of mainly afternoon and evening convective
precipitation with temperatures near seasonal averages Thursday.
Friday through the upcoming holiday weekend, models are in large
scale agreement to bring an upper level low south from the Gulf of
AK into the PAcific NW and gradually have this system edge east
toward the Northern Rockies late this weekend into early next
week. In general, this will bring increasing precipitation chances
to the region and somewhat cooler temperatures as the flow aloft
becomes southerly Friday and Saturday and likely continues through
much of the upcoming weekend as the upper low approaches.
Differences in smaller scale details however increase through the
upcoming weekend as the GFS keeps the upper low center farther
west over the Pacific NW through much of the weekend while the
ECMWF and CMC models take the system into northern Rockies/across
MT respectively much earlier in the weekend. Hoenisch

&&

.AVIATION...
UPDATED 1118Z.
An upper level low with center nearly stationary over SW
Saskatchewan today will continue to circulate moisture into the
region. Area of widespread showers from roughly KCTB to KHVR will
gradually sag southward this morning with showers becoming more
numerous across central and southwest MT and MVFR ceilings and
mountain obscuration becoming increasingly widespread. Decreasing
trend in precipitation and slow improvement to ceilings will begin
this evening. Breezy west winds will become northwesterly today and
eventually decrease this evening. Hoenisch

&&

.HYDROLOGY...
A flood warning continues for Clear Creek. The river has just gone
below flood stage...but with showers moving back into the
region...there is a chance for the creek to go back above flood
stage. Thus we will wait until the morning model runs have been
issued and determine later this morning the appropriate highlight
for this creek.

Otherwise...scattered showers will continue over the region for
the next few days. No new additional flooding is expected at this
time over the next few days as long as rainfall totals generally
remain less than one inch. However...both the GFS/EC are progging
another wet system to affect the region sometime next weekend.
Thus some hydrologic highlights might be needed for portions of
the region and an ESF outlook has been issued to highlight this
event. Brusda

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  54  39  59  41 /  60  20  40  20
CTB  49  37  57  39 /  70  30  20  30
HLN  56  41  60  43 /  50  20  40  30
BZN  56  37  61  41 /  40  30  30  30
WEY  49  31  52  34 /  40  30  40  40
DLN  56  37  58  39 /  40  20  40  40
HVR  55  42  60  41 /  60  20  30  20
LWT  55  39  59  41 /  40  20  40  20

&&

.TFX WATCHES/WARNINGS/ADVISORIES...

Winter Weather Advisory until Noon MDT today for MTZ009-048.

Flood Warning continues for Clear Creek until further notice.

&&

$$

weather.gov/greatfalls





000
FXUS65 KTFX 230619
AFDTFX

Area Forecast Discussion
National Weather Service Great Falls MT
1215 AM MDT MON MAY 23 2016

AVIATION SECTION UPDATED

.DISCUSSION...

TONIGHT...The chance of showers will continue to decrease this
evening but the airmass will, in general remain moist and a bit
unsettled under the influence of low pressure aloft. Brisk west
winds will continue. Updated to lower winds somewhat and to freshen
POPs, WX, and QPF. Zelzer

&&

.AVIATION...
UPDATED 0615Z.
A slow moving upper level low will reside over southern Alberta over
the next few days. As a result, scattered showers will pin-wheel
around this upper level low. The showers will be most numerous over
North Central MT. Expect mountains to be obscured at times,
especially the Northern Rocky Mountain Front. Surface winds will
remain breezy/windy at times through the day. Brusda

&&

.HYDROLOGY...
Periods of showers and isolated thunderstorms will continue to
affect the region over the next few days. A Flood Warning
continues for Clear Creek where the level remains just above flood
stage. It is expected to drop below flood stage on Monday.
Meanwhile, other locations near small creeks could see minor low
land flooding or agricultural field flooding. However, with breaks
in the precipitation, major rivers/creeks are not expected to rise
above flood stage at this time.

&&

.PREV DISCUSSION...
/ISSUED /

TONIGHT THROUGH TUESDAY...

A strong upper level low is spinning just north of our forecast
area, and slowly drifting northeast into Saskatchewan. A strong
pressure gradient at the surface has produced widespread west-
southwest wind gusts of 30 to 45 mph. Isolated gusts could reach
near 55 mph this evening, and have otherwise remained below high
wind warning criteria. Winds will stay brisk but gradually taper
later tonight through Monday as the surface low begins to fill and
move further away.

Deep moisture wrapping around the west side of the upper low is
producing record rainfall, per NWS MSO, at some locations west of
the Continental Divide. Snow levels over the Northern Rockies may
be as low as 5500 feet. Thus, there is potential for heavy snow
accumulation overnight into Monday crossing over to the east side
of the Continental Divide. A Winter Weather Advisory for
elevations above 5500 feet remains in effect to cover this hazard.

Radar and satellite trends show scattered light rain showers with
a few embedded lightning strikes over our southwest and eastern
zones. This activity is expected to dissipate after sunset, but
then redevelop once again on Monday and Tuesday afternoon.
Temperatures continue to remain below average with mostly cloudy
skies through Tuesday. PN

TUESDAY NIGHT THROUGH SUNDAY...Forecast models continue to show an
unsettled period during this time, with the greatest potential for
showers and thunderstorms occurring during the peak instability of
the afternoon and early evening hours. A broad upper level trough
with two distinct low pressure areas will set up over the western
and central United States through Friday. One low pressure area will
move east across the southwestern U.S. during this period, while the
second one dives south along the Pacific Northwest coast. A
disturbance over Montana and southern portions of Alberta and
Saskatchewan will keep a chance of showers and thunderstorms over
the forecast area through Wednesday night, with the best chances
over western and southwest Montana. As this disturbance moves east
out of the area with the first low pressure center beginning on
Thursday, the second low will continue to move south over the
Pacific Coast states and a high pressure ridge will build over the
Great Plains. As a result, the flow aloft will become more
southerly, which will bring unstable and steadily warming air with
increased (potentially monsoonal) moisture to Montana. This will
continue the good chance of showers and mainly afternoon/evening
thunderstorms over the forecast area. Temperatures will remain near
normal for most of the period, but warming temperatures into the
Memorial Day weekend could cause highs to reach the lower to mid 70s
in some areas by Sunday. However, with this warming, there will be
an increased threat of strong thunderstorms over the weekend. Will
continue to monitor this situation. Coulston

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  44  54  39  61 /  10  50  20  30
CTB  40  51  37  59 /  30  60  30  50
HLN  43  55  42  61 /  10  40  20  40
BZN  38  57  38  63 /  20  40  30  30
WEY  31  49  32  52 /  40  40  30  40
DLN  36  57  37  59 /  10  40  20  40
HVR  44  56  42  61 /  20  40  20  30
LWT  41  56  39  58 /  20  30  20  40

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
Winter Weather Advisory until noon MDT Monday for MTZ009-048.

Flood Warning for Clear Creek in Blaine County until Monday
morning.

&&

$$

weather.gov/greatfalls





000
FXUS65 KTFX 222334
AFDTFX

Area Forecast Discussion
National Weather Service Great Falls MT
534 PM MDT SUN MAY 22 2016

AVIATION SECTION UPDATED

.DISCUSSION...

TONIGHT THROUGH TUESDAY...

A strong upper level low is spinning just north of our forecast
area, and slowly drifting northeast into Saskatchewan. A strong
pressure gradient at the surface has produced widespread west-
southwest wind gusts of 30 to 45 mph. Isolated gusts could reach
near 55 mph this evening, and have otherwise remained below high
wind warning criteria. Winds will stay brisk but gradually taper
later tonight through Monday as the surface low begins to fill and
move further away.

Deep moisture wrapping around the west side of the upper low is
producing record rainfall, per NWS MSO, at some locations west of
the Continental Divide. Snow levels over the Northern Rockies may
be as low as 5500 feet. Thus, there is potential for heavy snow
accumulation overnight into Monday crossing over to the east side
of the Continental Divide. A Winter Weather Advisory for
elevations above 5500 feet remains in effect to cover this hazard.

Radar and satellite trends show scattered light rain showers with
a few embedded lightning strikes over our southwest and eastern
zones. This activity is expected to dissipate after sunset, but
then redevelop once again on Monday and Tuesday afternoon.
Temperatures continue to remain below average with mostly cloudy
skies through Tuesday. PN

TUESDAY NIGHT THROUGH SUNDAY...Forecast models continue to show an
unsettled period during this time, with the greatest potential for
showers and thunderstorms occurring during the peak instability of
the afternoon and early evening hours. A broad upper level trough
with two distinct low pressure areas will set up over the western
and central United States through Friday. One low pressure area will
move east across the southwestern U.S. during this period, while the
second one dives south along the Pacific Northwest coast. A
disturbance over Montana and southern portions of Alberta and
Saskatchewan will keep a chance of showers and thunderstorms over
the forecast area through Wednesday night, with the best chances
over western and southwest Montana. As this disturbance moves east
out of the area with the first low pressure center beginning on
Thursday, the second low will continue to move south over the
Pacific Coast states and a high pressure ridge will build over the
Great Plains. As a result, the flow aloft will become more
southerly, which will bring unstable and steadily warming air with
increased (potentially monsoonal) moisture to Montana. This will
continue the good chance of showers and mainly afternoon/evening
thunderstorms over the forecast area. Temperatures will remain near
normal for most of the period, but warming temperatures into the
Memorial Day weekend could cause highs to reach the lower to mid 70s
in some areas by Sunday. However, with this warming, there will be
an increased threat of strong thunderstorms over the weekend. Will
continue to monitor this situation. Coulston

&&

.AVIATION...UPDATED 2332Z.

A low pressure center will continue to move northeast of the region
tonight although a broad area of low pressure and strong southwest
flow will continue through Monday. The airmass will remain moist and
unsettled with a chance of showers through the period but especially
Monday afternoon. Local MVFR conditions are possible near showers
and thunderstorms. Elsewhere, VFR conditions will prevail through
the next 24 hours.

&&

.HYDROLOGY...
Periods of showers and isolated thunderstorms will continue to
affect the region over the next few days. A Flood Warning
continues for Clear Creek where the level remains just above
flood stage. It is expected to drop below flood stage by this
evening. Meanwhile, other locations near small creeks could see
minor low land flooding or agricultural field flooding. However,
with breaks in the precipitation, major rivers/creeks are not
expected to rise above flood stage at this time.

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  44  54  39  61 /  10  50  20  30
CTB  40  51  37  59 /  40  60  30  50
HLN  43  55  42  61 /  20  40  20  40
BZN  38  57  38  63 /  20  40  30  30
WEY  31  49  32  52 /  40  40  30  40
DLN  36  57  37  59 /  20  40  20  40
HVR  44  56  42  61 /  30  40  20  30
LWT  41  56  39  58 /  10  30  20  40

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
Winter Weather Advisory until noon MDT Monday for MTZ009-048.

Flood Warning for Clear Creek in Blaine County through Sunday
night.


&&

$$

weather.gov/greatfalls





000
FXUS65 KTFX 221755
AFDTFX

Area Forecast Discussion
National Weather Service Great Falls MT
1155 AM MDT SUN MAY 22 2016

UPDATED AVIATION SECTION

.DISCUSSION...
For the update, dropped wind gusts a bit along the Rocky Mtn Front
as cloud cover may help to limit mixing some this afternoon. Still
looks like a breezy afternoon for much of the area, though.
Dropped afternoon highs a bit along the Front as well as clouds
this morning will likely hang tough there through this afternoon,
keeping it a bit cooler than originally thought. For this
afternoon/evening, still expect isolated to scattered
showers/storms. Shear/instability isn`t nearly as impressive as
recent days, but with an inverted-V sounding environment and
steep lapse rates, gusty outflow winds will be possible with any
shower/storm, especially east of a Dillon to Great Falls to Havre
line. Martin

&&

.AVIATION...
UPDATED 1755Z.
Southwest flow aloft will continue to bring moisture and mid to high
clouds across the area. Southwesterly surface winds have increased
and will remain gusty beyond 00z. Scattered to isolated showers
and/or thunderstorms will develop after 20z and end by 04z. VFR
conditions prevail with MVFR conditions possible in the vicinity
of showers and/or thunderstorms along with gusty erratic winds.

&&

.HYDROLOGY...
Periods of showers and isolated thunderstorms will continue to
affect the region over the next few days. A Flood Warning
continues for Clear Creek where the level this morning was still
just above flood stage. It is expected to drop below flood stage
by this evening. Meanwhile, other locations near small creeks
could see minor low land flooding or agricultural field flooding.
However, with breaks in the precipitation, major rivers/creeks are
not expected to rise above flood stage at this time.
Brusda/Martin

&&

.PREV DISCUSSION...
/ISSUED /
TODAY THROUGH TUESDAY...Much of the region will be in transition
today, with breezy and sunny skies this morning, giving way to
windy and showers redeveloping this afternoon. Some fog has
developed over the Plains of North Central MT early this morning,
but much of the fog should burn off by mid morning as
southwesterly winds develop. A slow moving upper level low will
reside over southern Canada over the next few days. As a
result...strong west winds will develop over North Central MT by
mid day. I kept forecasted wind gusts just below warning criteria
along the I-15 corridor from Great Falls to Cut Bank, but the
potential exists that the Cut Bank area may need a wind highlight
later today. Scattered showers should redevelop this afternoon,
mainly over Southwest MT and for areas east of I-15. Over the
Rocky Mountain Front...heavy snow is possible in the mountains as
a moist westerly flow causes upslope west of the divide, and some
of the precipitation will spread just a few miles east of the
divide. Afternoon temperatures today will be a bit warmer than
they have been because of the west winds and some morning
sunshine. For tonight through Tuesday...scattered showers and
below normal temperatures are expected during this period. The
downslope winds will be much lighter...thus the scattered showers
will become a bit more widespread. With sky cover becoming mostly
cloudy, temperatures will generally be below normal Mon/Tue.
Brusda

TUESDAY NIGHT THROUGH SUNDAY...Forecast models continue to show an
unsettled period during this time, with the greatest potential for
showers and thunderstorms occurring during the peak instability of
the afternoon and early evening hours. A broad upper level trough
with two distinct low pressure areas will set up over the western
and central United States through Friday. One low pressure area will
move east across the southwestern U.S. during this period, while the
second one dives south along the Pacific Northwest coast. A
disturbance over Montana and southern portions of Alberta and
Saskatchewan will keep a chance of showers and thunderstorms over
the forecast area through Wednesday night, with the best chances
over western and southwest Montana. As this disturbance moves east
out of the area with the first low pressure center beginning on
Thursday, the second low will continue to move south over the
Pacific Coast states and a high pressure ridge will build over the
Great Plains. As a result, the flow aloft will become more
southerly, which will bring unstable and steadily warming air with
increased (potentially monsoonal) moisture to Montana. This will
continue the good chance of showers and mainly afternoon/evening
thunderstorms over the forecast area. Temperatures will remain near
normal for most of the period, but warming temperatures into the
Memorial Day weekend could cause highs to reach the lower to mid 70s
in some areas by Sunday. However, with this warming, there will be
an increased threat of strong thunderstorms over the weekend. Will
continue to monitor this situation. Coulston

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  62  43  52  40 /  10  20  40  30
CTB  53  40  49  37 /  20  40  60  40
HLN  62  43  54  42 /  30  20  40  20
BZN  60  38  57  38 /  20  30  40  30
WEY  46  31  48  33 /  40  40  40  30
DLN  56  36  56  37 /  40  20  40  20
HVR  63  44  56  42 /  20  40  50  30
LWT  60  41  56  39 /  20  20  30  20

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
Winter Weather Advisory until noon MDT Monday for MTZ009-048.

Flood Warning for Clear Creek in Blaine County through Sunday
night.

&&

$$

weather.gov/greatfalls





000
FXUS65 KTFX 220548
AFDTFX

Area Forecast Discussion
National Weather Service Great Falls MT
1155 PM MDT SAT MAY 21 2016

Aviation section updated

.DISCUSSION...

TONIGHT...Most of the shower and thunderstorm activity has ended
across Central and Southwest Montana. Updated to freshen POPs, WX,
and QPF. Zelzer

&&

.AVIATION...
UPDATED 0555Z.
Patchy fog will continue to affect portions of North Central MT
through about 10z...with the LWT area the main terminal impact area.
Expect a few showers over the region through 12z. Precip becomes a
bit more widespread after 18z Sun east of a line from Cut Bank to
Great Falls. It turns windy west of a line from Cut Bank to Great
Falls on Sunday afternoon, with winds diminishing after 03z Mon.
Mountains will be obscured at times, especially the Rocky Mountain
Front with rain/snow expected Sun afternoon/evening. Brusda

&&

.HYDROLOGY...
Periods of showers and thunderstorms will continue to affect the
region over the next few days. A Flood Warning has been issued for
Clear Creek and other locations could see minor low land flooding
or agricultural field flooding. However, with breaks in the
precipitation, major rivers/creeks are not expected to rise above
flood stage.

&&

.PREV DISCUSSION...
/ISSUED /

Tonight through Monday...A very cool and moist area of high
pressure remains entrenched over North-central MT. Further east,
an inverted surface trough stretches from east of Billings to
near Glasgow. This creates a warmer and more unstable convective
environment over eastern Montana, but it does stretch westward
just enough to create potential for severe thunderstorms over far
eastern Fergus County. While temperatures are presently in the
lower 50s, there is some concern that a band of thunderstorms just
now moving into southern Fergus county could produce marginally
severe elevated storms, mainly along and east of MT 191. Any
thunderstorms rolling off the higher terrain south of Lewistown
could ride over a layer of enhanced low level shear in this area.
The severe storm threat is expected to end as this presently
active band of storms moves through the county.

As precipitation tapers for most areas tonight, attention turns to
a heavy snow potential over Glacier NP. As the center of the upper
low cuts through northwest MT, winds will shift to the west and
produce an extended period of upslope winter precipitation over
GNP. Snow levels drop to around 6000 feet through Monday. Westerly
wind gusts could reach near 50 mph and snow will cross to the
eastern side of the Continental Divide. Those working / recreating
in GNP this weekend through Monday will encounter cold exposure
hazards due to wet snow and wind. Snow will reduce visibility at
times to near zero, with a rapid deterioration in conditions above
5500 feet. A winter weather advisory is posted above 6000 feet to
address these concerns.

Even as the upper low moves into Alberta Sunday, periods of rain
are expected through Monday. Isolated thunderstorms embedded
within areas of rain are possible as well, mainly during afternoon
hours. Temperatures remain well below seasonal average. PN

MONDAY NIGHT THROUGH SATURDAY...This period will continue to be
unsettled, but most of the activity will likely occur during the
diurnally unstable afternoon and evening hours. A lingering low
pressure trough will continue a good chance of showers over the area
through Tuesday, with a slight chance of thunderstorms over
Southwest Montana under the base of the trough. Temperatures will
remain 5 to 10 degrees below normal during this time. A broader
trough will then develop over the western and central United States
for Wednesday and into the Memorial Day weekend, as a series of
disturbances from the Gulf of Alaska reinforce the trough.
Temperatures will warm back closer to normal from mid week through
the end of the week, which will increase the instability during the
afternoon and early evening hours and make these periods the most
likely for scattered showers with a few thunderstorms. There are
some differences among the forecast models as to just how strong
these disturbances will be and how much precipitation will be
produced. Have therefore gone with near to slightly above
climatological POPs. This uncertainty carries through the holiday
weekend, but it appears at this time that the period will continue
to be unsettled with occasional showers and maybe a few
thunderstorms.  Coulston

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  41  56  43  54 /  50  40  20  40
CTB  39  50  40  51 /  60  40  40  50
HLN  41  56  43  57 /  30  40  20  30
BZN  36  58  39  59 /  20  40  30  30
WEY  31  44  31  48 /  40  50  50  50
DLN  36  53  36  56 /  20  40  20  30
HVR  42  60  44  57 /  60  40  40  40
LWT  39  61  41  58 /  50  40  20  30

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
Winter Weather Advisory from midnight tonight to noon MDT Monday
for MTZ009-048.

Flood Warning for Clear Creek in Blaine County through Sunday
night.

&&

$$

weather.gov/greatfalls





000
FXUS65 KTFX 220236
AFDTFX

Area Forecast Discussion
National Weather Service Great Falls MT
836 PM MDT SAT MAY 21 2016

.DISCUSSION...

TONIGHT...Most of the shower and thunderstorm activity has ended
across Central and Southwest Montana. Updated to freshen POPs, WX,
and QPF. Zelzer

&&

.AVIATION...
UPDATED 2310Z.

A low pressure system over Central and Southwest Montana will move
northeast of the region tonight. Precipitation will mostly come to
an end but surface winds will strengthen. Strong winds will be
developing across the region by morning and will continue to
strengthen into the afternoon with widespread west to southwest
winds 25kts gusting to near 40kts. Areas of MVFR conditions due to
low clouds and precipitation will persist into the evening. VFR
conditions will generally prevail by morning. Weak instability will
develop Sunday afternoon with a chance of showers or thunderstorms
but precipitation amounts will remain low.

&&

.HYDROLOGY...
Periods of showers and thunderstorms will continue to affect the
region over the next few days. A Flood Warning has been issued for
Clear Creek and other locations could see minor low land flooding
or agricultural field flooding. However, with breaks in the
precipitation, major rivers/creeks are not expected to rise above
flood stage.

&&

.PREV DISCUSSION...
/ISSUED /

Tonight through Monday...A very cool and moist area of high
pressure remains entrenched over North-central MT. Further east,
an inverted surface trough stretches from east of Billings to
near Glasgow. This creates a warmer and more unstable convective
environment over eastern Montana, but it does stretch westward
just enough to create potential for severe thunderstorms over far
eastern Fergus County. While temperatures are presently in the
lower 50s, there is some concern that a band of thunderstorms just
now moving into southern Fergus county could produce marginally
severe elevated storms, mainly along and east of MT 191. Any
thunderstorms rolling off the higher terrain south of Lewistown
could ride over a layer of enhanced low level shear in this area.
The severe storm threat is expected to end as this presently
active band of storms moves through the county.

As precipitation tapers for most areas tonight, attention turns to
a heavy snow potential over Glacier NP. As the center of the upper
low cuts through northwest MT, winds will shift to the west and
produce an extended period of upslope winter precipitation over
GNP. Snow levels drop to around 6000 feet through Monday. Westerly
wind gusts could reach near 50 mph and snow will cross to the
eastern side of the Continental Divide. Those working / recreating
in GNP this weekend through Monday will encounter cold exposure
hazards due to wet snow and wind. Snow will reduce visibility at
times to near zero, with a rapid deterioration in conditions above
5500 feet. A winter weather advisory is posted above 6000 feet to
address these concerns.

Even as the upper low moves into Alberta Sunday, periods of rain
are expected through Monday. Isolated thunderstorms embedded
within areas of rain are possible as well, mainly during afternoon
hours. Temperatures remain well below seasonal average. PN

MONDAY NIGHT THROUGH SATURDAY...This period will continue to be
unsettled, but most of the activity will likely occur during the
diurnally unstable afternoon and evening hours. A lingering low
pressure trough will continue a good chance of showers over the area
through Tuesday, with a slight chance of thunderstorms over
Southwest Montana under the base of the trough. Temperatures will
remain 5 to 10 degrees below normal during this time. A broader
trough will then develop over the western and central United States
for Wednesday and into the Memorial Day weekend, as a series of
disturbances from the Gulf of Alaska reinforce the trough.
Temperatures will warm back closer to normal from mid week through
the end of the week, which will increase the instability during the
afternoon and early evening hours and make these periods the most
likely for scattered showers with a few thunderstorms. There are
some differences among the forecast models as to just how strong
these disturbances will be and how much precipitation will be
produced. Have therefore gone with near to slightly above
climatological POPs. This uncertainty carries through the holiday
weekend, but it appears at this time that the period will continue
to be unsettled with occasional showers and maybe a few
thunderstorms.  Coulston

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  41  56  43  54 /  50  40  20  40
CTB  39  50  40  51 /  60  40  40  50
HLN  41  56  43  57 /  30  40  20  30
BZN  36  58  39  59 /  20  40  30  30
WEY  31  44  31  48 /  40  50  50  50
DLN  36  53  36  56 /  20  40  20  30
HVR  42  60  44  57 /  60  40  40  40
LWT  39  61  41  58 /  50  40  20  30

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
Winter Weather Advisory from midnight tonight to noon MDT Monday
for MTZ009-048.

Flood Warning for Clear Creek in Blaine County through Sunday
night.

&&

$$

weather.gov/greatfalls





000
FXUS65 KTFX 211810
AFDTFX

Area Forecast Discussion
National Weather Service Great Falls MT
1210 PM MDT SAT MAY 21 2016

UPDATED AVIATION SECTION

.DISCUSSION...

For the morning update, no significant changes were made to the
going forecast. Still looking at generally cool conditions with scattered
to numerous showers and a few thunderstorms through this evening.

Regarding the potential of a few strong/severe storms today, here
is the latest thinking. The upper level impulse responsible for
today`s showers is just now moving into eastern Idaho. Some mid-
level dry air associated with this feature may allow some breaks
in the cloud cover over far eastern sections of central Montana.
Latest VIS loop shows this is already occurring over western
WY/south-central MT.

Meanwhile, an area of low pressure over south-central MT will
lift quickly north this afternoon/evening and may help to advect
in more moist and unstable air into our far eastern counties, with
MLCAPE possible reaching 500-1000 j/kg. At the same time, an upper
level jet nosing in will enhance the shear with effective shear of
45-55kt likely. These values are more than adequate for supercell
development. That said, latest short-term guidance has trended a
bit further east with where the strongest storms may develop.
Therefore, thinking bands of showers and elevated storms will
moving quickly north across our far eastern counties through this
evening with a threat of gusty winds and possibly some small hail.
For now, the best chance of seeing a severe storm looks to be
across extreme eastern Fergus/Blaine Counties as storms move
north from south- central MT. However, if storms develop further
east, then our forecast area may be spared from the strongest
activity. SPC has shifted the threat area further east in recent
outlooks and agree with this based on the latest trends. Of note,
given the shear/instability, any severe storm that develops will
have the potential for damaging winds and large hail. But, again,
the threat for our area is lower at this time and conditional on
how storms evolve to our south and whether enough instability can
be realized. It should also be noted that even if a more stable
layer remain in place across our eastern counties, forecast
soundings suggest decent elevated instability which could at
minimum allow for a few elevated severe storms with mainly a hail
potential. Martin

&&

.AVIATION...
UPDATED 1810Z.
Moist and unstable southerly flow aloft will continue as will
widespread rain and isolated thunderstorms. Strong thunderstorms are
possible along and east of a KHVR to KLWT line. Thunderstorms should
end by 04z but areas of light rain will continue overnight. MVFR/IFR
conditions prevail due to low ceilings, fog, and precipitation.
Gusty erratic winds are possible near thunderstorms. Mountains
obscured.

&&

.HYDROLOGY...
Periods of showers and thunderstorms will continue to affect the
region over the next few days. Some of the stronger storms could
produce rainfall amounts of 0.50 to 0.75 inches. With breaks in
the precipitation, major rivers/creeks are not expected to rise
above flood stage at this time.

However, some minor low land flooding or agricultural field
flooding can not be ruled out for small streams that flow out of
the mountains, as snowmelt from higher elevations will add to the
runoff rises. For this reason, a Flood Watch has been issued for
Clear Creek with the potential it will rise near or slightly above
flood stage Sunday morning. Brusda/Martin

&&

.PREV DISCUSSION...
/ISSUED /
TODAY THROUGH MONDAY...An unsettled weather pattern will continue to
reside over the region for the next few days. Currently, a northerly
surface wind continues to reside over much of the region. This is
keeping temperatures in the 30s in the mountains and 40s at lower
elevations. As an upper level disturbance moves northward through
the region today, warmer air from eastern MT is expected to be
pulled westward into the Havre/Lewistown area. This might be a bit
far West, and these regions might remain cool. As a result,
confidence is low in severe weather going as far west as the
Havre/Lewistown area. For now I did leave the severe wording in the
forecast, but that will be looked at closer for the morning update.
Further west, I did lower temperatures a few degrees as cool
northerly winds continue. Showers will develop in Southwest MT this
morning and spread into North Central MT this afternoon. Another
0.25 to 0.50 inches is possible with this area of rain as it moves
northward. Additionally, some snow will fall, mainly for elevations
above 7000 feet. Showers/thunderstorms will push generally out of
the region overnight, as the upper level low pushes into southern
Canada. However, the upper level low will stall out in southern
Canada, resulting in scattered showers continuing over the region
for Sunday and Monday, especially over North Central MT.
Temperatures will remain below normal for Sunday and Monday as well.
Brusda

MONDAY NIGHT THROUGH SATURDAY...This period will continue to be
unsettled, but most of the activity will likely occur during the
diurnally unstable afternoon and evening hours. A lingering low
pressure trough will continue a good chance of showers over the area
through Tuesday, with a slight chance of thunderstorms over
Southwest Montana under the base of the trough. Temperatures will
remain 5 to 10 degrees below normal during this time. A broader
trough will then develop over the western and central United States
for Wednesday and into the Memorial Day weekend, as a series of
disturbances from the Gulf of Alaska reinforce the trough.
Temperatures will warm back closer to normal from mid week through
the end of the week, which will increase the instability during the
afternoon and early evening hours and make these periods the most
likely for scattered showers with a few thunderstorms. There are
some differences among the forecast models as to just how strong
these disturbances will be and how much precipitation will be
produced. Have therefore gone with near to slightly above
climatological POPs. This uncertainty carries through the holiday
weekend, but it appears at this time that the period will continue
to be unsettled with occasional showers and maybe a few
thunderstorms.  Coulston

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  50  42  57  43 /  80  20  40  20
CTB  47  39  51  40 /  90  40  40  30
HLN  57  42  57  43 /  80  20  40  10
BZN  57  38  57  38 /  50  10  40  30
WEY  53  32  44  31 /  90  30  50  40
DLN  54  37  53  36 /  80  10  40  20
HVR  58  44  61  44 /  50  30  30  30
LWT  60  40  61  41 /  80  20  40  10

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
Flood Watch for Clear Creek in Blaine County through Sunday night.
&&

$$

weather.gov/greatfalls





000
FXUS65 KTFX 211649
AFDTFX

Area Forecast Discussion
National Weather Service Great Falls MT
1049 AM MDT SAT MAY 21 2016

.UPDATE...

For the morning update, no significant changes were made to the
going forecast. Still looking at generally cool conditions with scattered
to numerous showers and a few thunderstorms through this evening.

Regarding the potential of a few strong/severe storms today, here
is the latest thinking. The upper level impulse responsible for
today`s showers is just now moving into eastern Idaho. Some mid-
level dry air associated with this feature may allow some breaks
in the cloudcover over far eastern sections of central Montana.
Latest VIS loop shows this is already occurring over western
WY/south-central MT.

Meanwhile, an area of low pressure over south-central MT will
lift quickly north this afternoon/evening and may help to advect
in more moist and unstable air into our far eastern counties, with
MLCAPE possible reaching 500-1000 j/kg. At the same time, an upper
level jet nosing in will enhance the shear with effective shear of
45-55kt likely. These values are more than adequate for supercell
development. That said, latest short-term guidance has trended a
bit further east with where the strongest storms may develop.
Therefore, thinking bands of showers and elevated storms will
moving quickly north across our far eastern counties through this
evening with a threat of gusty winds and possibly some small hail.
For now, the best chance of seeing a severe storm looks to be
across extreme eastern Fergus/Blaine Counties as storms move
north from south- central MT. However, if storms develop further
east, then our forecast area may be spared from the strongest
activity. SPC has shifted the threat area further east in recent
outlooks and agree with this based on the latest trends. Of note,
given the shear/instability, any severe storm that develops will
have the potential for damaging winds and large hail. But, again,
the threat for our area is lower at this time and conditional on
how storms evolve to our south and whether enough instability can
be realized. It should also be noted that even if a more stable
layer remain in place across our eastern counties, forecast
soundings suggest decent elevated instability which could at
minimum allow for a few elevated severe storms with mainly a hail
potential. Martin

&&

.AVIATION...
UPDATED 1225Z.

Mountains will be obscured across the area through at least 22Z. A
moist southerly flow aloft with northerly upslope surface winds will
continue widespread MVFR/IFR conditions in low clouds/fog and a few
lingering showers across north central Montana through around 18Z.
Over southwest Montana, increasing showers through 20Z associated
with a disturbance in the southerly flow will keep much of southwest
Montana in low VFR/high MVFR conditions. A few thunderstorms may
also develop, mainly east and south of KHLN. This disturbance will
then spread showers over north central Montana by 22Z. Upslope winds
will continue the MVFR/IFR conditions west of a KLWT to KHVR line. A
surface boundary with a strong temperature gradient, and thus
significant instability, just east of this line will enable strong
to possibly severe thunderstorms to develop along and east of this
line. Gusts to 50kt will be the main threat, and periods of heavy
rain will reduce conditions from mostly VFR to MVFR/IFR at times.
Hail is also possible, but will likely not directly impact the
terminals. Conditions will improve first over southwest Montana
after 21Z. Westerly downslope winds in the wake of the disturbance
and surface boundary will then help improve conditions across north
central Montana after 00Z.  Coulston

&&

.HYDROLOGY...
Periods of showers and thunderstorms will continue to affect the
region over the next few days. Some of the stronger storms could
produce rainfall amounts of 0.50 to 0.75 inches. With breaks in
the precipitation, major rivers/creeks are not expected to rise
above flood stage at this time.

However, some minor low land flooding or agricultural field
flooding can not be ruled out for small streams that flow out of
the mountains, as snowmelt from higher elevations will add to the
runoff rises. For this reason, a Flood Watch has been issued for
Clear Creek with the potential it will rise near or slightly above
flood stage Sunday morning. Brusda/Martin

&&

.PREV DISCUSSION...
/ISSUED /
TODAY THROUGH MONDAY...An unsettled weather pattern will continue to
reside over the region for the next few days. Currently, a northerly
surface wind continues to reside over much of the region. This is
keeping temperatures in the 30s in the mountains and 40s at lower
elevations. As an upper level disturbance moves northward through
the region today, warmer air from eastern MT is expected to be
pulled westward into the Havre/Lewistown area. This might be a bit
far West, and these regions might remain cool. As a result,
confidence is low in severe weather going as far west as the
Havre/Lewistown area. For now I did leave the severe wording in the
forecast, but that will be looked at closer for the morning update.
Further west, I did lower temperatures a few degrees as cool
northerly winds continue. Showers will develop in Southwest MT this
morning and spread into North Central MT this afternoon. Another
0.25 to 0.50 inches is possible with this area of rain as it moves
northward. Additionally, some snow will fall, mainly for elevations
above 7000 feet. Showers/thunderstorms will push generally out of
the region overnight, as the upper level low pushes into southern
Canada. However, the upper level low will stall out in southern
Canada, resulting in scattered showers continuing over the region
for Sunday and Monday, especially over North Central MT.
Temperatures will remain below normal for Sunday and Monday as well.
Brusda

MONDAY NIGHT THROUGH SATURDAY...This period will continue to be
unsettled, but most of the activity will likely occur during the
diurnally unstable afternoon and evening hours. A lingering low
pressure trough will continue a good chance of showers over the area
through Tuesday, with a slight chance of thunderstorms over
Southwest Montana under the base of the trough. Temperatures will
remain 5 to 10 degrees below normal during this time. A broader
trough will then develop over the western and central United States
for Wednesday and into the Memorial Day weekend, as a series of
disturbances from the Gulf of Alaska reinforce the trough.
Temperatures will warm back closer to normal from mid week through
the end of the week, which will increase the instability during the
afternoon and early evening hours and make these periods the most
likely for scattered showers with a few thunderstorms. There are
some differences among the forecast models as to just how strong
these disturbances will be and how much precipitation will be
produced. Have therefore gone with near to slightly above
climatological POPs. This uncertainty carries through the holiday
weekend, but it appears at this time that the period will continue
to be unsettled with occasional showers and maybe a few
thunderstorms.  Coulston

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  50  42  57  43 /  80  20  40  20
CTB  47  39  51  40 /  90  40  40  30
HLN  57  42  57  43 /  80  20  40  10
BZN  57  38  57  38 /  50  10  40  30
WEY  53  32  44  31 /  90  30  50  40
DLN  54  37  53  36 /  80  10  40  20
HVR  58  44  61  44 /  50  30  30  30
LWT  60  40  61  41 /  80  20  40  10

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$

weather.gov/greatfalls





000
FXUS65 KTFX 211228
AFDTFX

Area Forecast Discussion
National Weather Service Great Falls MT
625 AM MDT SAT MAY 21 2016

UPDATED AVIATION SECTION

.DISCUSSION...
TODAY THROUGH MONDAY...An unsettled weather pattern will continue to
reside over the region for the next few days. Currently, a northerly
surface wind continues to reside over much of the region. This is
keeping temperatures in the 30s in the mountains and 40s at lower
elevations. As an upper level disturbance moves northward through
the region today, warmer air from eastern MT is expected to be
pulled westward into the Havre/Lewistown area. This might be a bit
far West, and these regions might remain cool. As a result,
confidence is low in severe weather going as far west as the
Havre/Lewistown area. For now I did leave the severe wording in the
forecast, but that will be looked at closer for the morning update.
Further west, I did lower temperatures a few degrees as cool
northerly winds continue. Showers will develop in Southwest MT this
morning and spread into North Central MT this afternoon. Another
0.25 to 0.50 inches is possible with this area of rain as it moves
northward. Additionally, some snow will fall, mainly for elevations
above 7000 feet. Showers/thunderstorms will push generally out of
the region overnight, as the upper level low pushes into southern
Canada. However, the upper level low will stall out in southern
Canada, resulting in scattered showers continuing over the region
for Sunday and Monday, especially over North Central MT.
Temperatures will remain below normal for Sunday and Monday as well.
Brusda

MONDAY NIGHT THROUGH SATURDAY...This period will continue to be
unsettled, but most of the activity will likely occur during the
diurnally unstable afternoon and evening hours. A lingering low
pressure trough will continue a good chance of showers over the area
through Tuesday, with a slight chance of thunderstorms over
Southwest Montana under the base of the trough. Temperatures will
remain 5 to 10 degrees below normal during this time. A broader
trough will then develop over the western and central United States
for Wednesday and into the Memorial Day weekend, as a series of
disturbances from the Gulf of Alaska reinforce the trough.
Temperatures will warm back closer to normal from mid week through
the end of the week, which will increase the instability during the
afternoon and early evening hours and make these periods the most
likely for scattered showers with a few thunderstorms. There are
some differences among the forecast models as to just how strong
these disturbances will be and how much precipitation will be
produced. Have therefore gone with near to slightly above
climatological POPs. This uncertainty carries through the holiday
weekend, but it appears at this time that the period will continue
to be unsettled with occasional showers and maybe a few
thunderstorms.  Coulston

&&

.AVIATION...
UPDATED 1225Z.

Mountains will be obscured across the area through at least 22Z. A
moist southerly flow aloft with northerly upslope surface winds will
continue widespread MVFR/IFR conditions in low clouds/fog and a few
lingering showers across north central Montana through around 18Z.
Over southwest Montana, increasing showers through 20Z associated
with a disturbance in the southerly flow will keep much of southwest
Montana in low VFR/high MVFR conditions. A few thunderstorms may
also develop, mainly east and south of KHLN. This disturbance will
then spread showers over north central Montana by 22Z. Upslope winds
will continue the MVFR/IFR conditions west of a KLWT to KHVR line. A
surface boundary with a strong temperature gradient, and thus
significant instability, just east of this line will enable strong
to possibly severe thunderstorms to develop along and east of this
line. Gusts to 50kt will be the main threat, and periods of heavy
rain will reduce conditions from mostly VFR to MVFR/IFR at times.
Hail is also possible, but will likely not directly impact the
terminals. Conditions will improve first over southwest Montana
after 21Z. Westerly downslope winds in the wake of the disturbance
and surface boundary will then help improve conditions across north
central Montana after 00Z.  Coulston

&&

.HYDROLOGY...
Periods of showers and thunderstorms will continue to affect the
region over the next few days. Some of the stronger storms could
produce rainfall amounts of 0.50 to 0.75 inches. With breaks in
the precipitation, major rivers/creeks are not expected to rise
above flood stage at this time.

However, some minor low land flooding or agricultural field
flooding can not be ruled out though for small streams that flow
out of the mountains, as snowmelt from higher elevations will add
to the runoff rises. Brusda

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  50  42  57  43 /  60  20  40  20
CTB  47  39  51  40 /  60  40  40  30
HLN  57  42  57  43 /  60  30  40  10
BZN  57  38  57  38 /  60  20  40  30
WEY  53  32  44  31 /  50  30  50  40
DLN  54  37  53  36 /  60  20  40  20
HVR  60  44  61  44 /  70  60  30  30
LWT  62  40  61  41 /  60  50  40  10

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$

weather.gov/greatfalls





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