Home > Products > Valid Products > HMD

000
AGUS71 KTIR 021646
HMDTIR
Ohio River Basin Hydrometeorological Discussion
Ohio River Forecast Center, Wilmington, Ohio
1146 AM EST Monday, March 2, 2015

...HYDROMETEOROLOGICAL DISCUSSION...
High pressure is strengthening over the Ohio Valley today providing
generally dry and quiet conditions. This respite will quickly come to an
end Tuesday as warm air advection generates some freezing rain then rain
across the majority of the basin, lasting into Wednesday. Rain will be
heavy at times especially for areas south of the Ohio River. Cold air
behind the front will cause precipitation to transition over to snow
Wednesday night before the deeper moisture exits the region and snow comes
to an end.

Drier and cooler conditions are expected late week into the weekend with
just a few weak disturbances dropping down every couple of days, generating
some light snow showers as each passes.

...FLOOD POTENTIAL DISCUSSION...
Heavy rain Tuesday and Wednesday on top of an extensive snow pack is
expected to generate widespread minor flooding. Moderate or even major
flooding is possible, particularly in the southeast quadrant.  It appears
the flood threat is lower in middle TN due to the lack of snow on the ground,
and also across the northern third of the Ohio Valley where there is plenty
of snow-pack, but the relatively cooler temperatures will help alleviate
excessive snowmelt concerns.

...24-HR OBSERVED PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Rain and snow fell across most of the basin. The western half of the basin
saw around 0.25" or less, while the eastern half received 0.25" to 0.50".
Amounts over 1" fell in parts of WV.

...72-HR FORECAST PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Locations south of the Ohio River can expect 1.50" to 3.50", most of which
will fall as rain. The higher end totals are expected across southern WV,
southern KY, and middle TN although there is still plenty of uncertainty.
North of the mainstem Ohio, amounts between 0.25" to 1.00" are expected
with locally heavier amounts to 1.50" immediately along the Ohio River. The
majority of all this precipitation will fall on Days 2 and 3, with little
or nothing on Day 1.

...RIVER BASINS IN FLOOD...
None.

Forecast precipitation graphics are available on the OHRFC Website
at the following address:  http://weather.gov/ohrfc/ForecastPrecipitation

$$
jm





000
AGUS71 KTIR 011505
HMDTIR
Ohio River Basin Hydrometeorological Discussion
Ohio River Forecast Center, Wilmington, Ohio
1005 AM EST Sunday, March 1, 2015

...HYDROMETEOROLOGICAL DISCUSSION...
Widespread precipitation is occurring today as a storm system crosses the
region. Precipitation types vary throughout, with snow across the north,
rain/snow/sleet in the middle of the basin, and all rain across the south.
The disturbance will exit tonight setting up a relatively dry day under
high pressure on Monday.

The respite will be brief as precipitation ahead of the next system arrives
late Monday night. With this next system being warmer, precipitation may start
as a wintry mix but will quickly turn over to all rain as southerly flow pumps
warm air into the basin. Precipitation will linger into Thursday but may
turn back over to snow before ending as colder air works in behind the front.
Rainfall with this system will be heavy at times, and when combined with
snowmelt will likely cause flooding concerns by mid to late week.

...FLOOD POTENTIAL DISCUSSION...
Heavy rain Tuesday and Wednesday on top of an extensive snow pack is
expected to generate widespread minor flooding. Moderate to even major
flooding is possible, particularly for the middle, southeast, and
east-central Ohio Valley. It appears the flood threat is lower in middle TN
due to the lack of snow on the ground, and also in the Allegheny watershed
where there is plenty of snow, but the relatively cooler temperatures will
preclude excessive snowmelt.

...24-HR OBSERVED PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Wintry precipitation fell across much of the middle and northern basin
Saturday night. Amounts were heaviest in central IN with around 0.50".
Otherwise, most locations ranged between 0.10" to 0.40" liquid equivalent.
The far southern basin was dry.

...48-HR FORECAST PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Precipitation will be widespread, though most of it will end by Monday
morning. Forecast amounts are heaviest across the eastern basin will 0.25"
to 0.75" in spots. The rest of the Ohio Valley can expected 0.25" or less.

...RIVER BASINS IN FLOOD...
None.

Forecast precipitation graphics are available on the OHRFC Website
at the following address:  http://weather.gov/ohrfc/ForecastPrecipitation

$$
jm






000
AGUS71 KTIR 281754
HMDTIR
Ohio River Basin Hydrometeorological Discussion
Ohio River Forecast Center, Wilmington, Ohio
1254 PM EST Saturday, February 28, 2015

...HYDROMETEOROLOGICAL DISCUSSION...
A broad storm system moves into the Ohio Valley by this evening.  This will
bring a plethora of precipitation type to the area.  Rain across the southern
third of the basin, Snow and rain over the middle third and snow over the north.
This will clear the basin by early Monday with a dry day for the basin.  The
next, and more significant, storm will enter the basin early Tuesday and
overspread the basin during the day.  Strong southerly flow ahead of this system
will result in rain for the entire basin Tuesday, Wednesday and lingering into
Thursday across the south.  Precipitation won`t end in the south until late
Thursday with a dry but cooler day on Friday.

...FLOOD POTENTIAL DISCUSSION...
Flood potential will be low through Monday due to additional snowfall combined
with light rain and somewhat warmer temperatures. This will change on Tuesday
and linger through the end of the week. Low pressure from the southern plains
with strong southerly flow will bring in moderate to heavy rainfall and above
normal temperatures.  All of this will result in melting the extensive snow pack
across the region bringing moderate to high probabilities of flooding for the
southern half of the basin and low to moderate over the north.  An exception
will be over the Allegheny basin as the temperatures will not be warm enough to
cause enough melt for much flooding that at all.

...24-HR OBSERVED PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Some light snow showers in portions of West Virginia resulted in areas of a few
hundredths of an inch.  Elsewhere, the 24 hour observed precipitation was zero.

...48-HR FORECAST PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Rain and snow will move into the basin tongitha and overspread the basin through
the forecast period.  Overall amounts are a half inch to eight tenths of an inch
along an Interstate 70 corridor.  Some lesser amounts around a third of an inch
across the northern edge of the forecast area and across southern Illinois,
southern Indiana, southern Ohio into Wet Virginia.  Elsewhere, less than a
quarter inch is forecast.

...RIVER BASINS IN FLOOD...
None.

Forecast precipitation graphics are available on the OHRFC Website
at the following address:  http://weather.gov/ohrfc/ForecastPrecipitation

$$
JEH






000
AGUS71 KTIR 281754
HMDTIR
Ohio River Basin Hydrometeorological Discussion
Ohio River Forecast Center, Wilmington, Ohio
1254 PM EST Saturday, February 28, 2015

...HYDROMETEOROLOGICAL DISCUSSION...
A broad storm system moves into the Ohio Valley by this evening.  This will
bring a plethora of precipitation type to the area.  Rain across the southern
third of the basin, Snow and rain over the middle third and snow over the north.
This will clear the basin by early Monday with a dry day for the basin.  The
next, and more significant, storm will enter the basin early Tuesday and
overspread the basin during the day.  Strong southerly flow ahead of this system
will result in rain for the entire basin Tuesday, Wednesday and lingering into
Thursday across the south.  Precipitation won`t end in the south until late
Thursday with a dry but cooler day on Friday.

...FLOOD POTENTIAL DISCUSSION...
Flood potential will be low through Monday due to additional snowfall combined
with light rain and somewhat warmer temperatures. This will change on Tuesday
and linger through the end of the week. Low pressure from the southern plains
with strong southerly flow will bring in moderate to heavy rainfall and above
normal temperatures.  All of this will result in melting the extensive snow pack
across the region bringing moderate to high probabilities of flooding for the
southern half of the basin and low to moderate over the north.  An exception
will be over the Allegheny basin as the temperatures will not be warm enough to
cause enough melt for much flooding that at all.

...24-HR OBSERVED PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Some light snow showers in portions of West Virginia resulted in areas of a few
hundredths of an inch.  Elsewhere, the 24 hour observed precipitation was zero.

...48-HR FORECAST PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Rain and snow will move into the basin tongitha and overspread the basin through
the forecast period.  Overall amounts are a half inch to eight tenths of an inch
along an Interstate 70 corridor.  Some lesser amounts around a third of an inch
across the northern edge of the forecast area and across southern Illinois,
southern Indiana, southern Ohio into Wet Virginia.  Elsewhere, less than a
quarter inch is forecast.

...RIVER BASINS IN FLOOD...
None.

Forecast precipitation graphics are available on the OHRFC Website
at the following address:  http://weather.gov/ohrfc/ForecastPrecipitation

$$
JEH






    US Dept of Commerce
    National Oceanic and Atmospheric Administration
    National Weather Service
    1325 East West Highway
    Silver Spring, MD 20910
    Page Author: NWS Internet Services Team
Disclaimer
Information Quality
Credits
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities