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000
AGUS76 KRSA 061539
HMDRSA

ZCZC RNOWRKHMD 061421
TTAA00 KRNO DDHHMM

HYDROMETEOROLOGICAL DISCUSSION
NATIONAL WEATHER SERVICE / CALIFORNIA NEVADA RFC / SACRAMENTO CA
740 AM PST FRI MAR 6 2015

...DRY UNTIL NEXT MID-WEEK WITH LIGHT PRECIP NORTH OF I-80...

.24 HOUR PRECIPITATION TOTALS (ENDING MAR 6 AT 400 AM PST)...

HIGH PRESSURE OVER THE REGION RESULTED IN DRY CONDITIONS YESTERDAY.


.METEOROLOGICAL CONDITIONS (FRI AM - THU AM)...

UPR RIDGE IS CENTERED OVER NORTHERN CA...WHILE A VERY WEAK UPR LOW
IS DRIFTING EAST ACROSS NORTHERN BAJA THIS MORNING. THROUGH THE
WEEKEND...THE UPR RIDGE WILL MEANDER OVER THE AREA AND DRIFT
SLIGHTLY TOWARD THE WEST AND JUST OFFSHORE. EXPECT DRY AND WARM
CONDITIONS INTO EARLY NEXT WEEK.

FOR THE MIDDLE OF NEXT WEEK...AN UPR LOW CURRENTLY SPINNING OVER THE
EAST-CENTRAL PACIFIC (40N/150W) WILL EJECT A S/WV TROF TOWARD THE
PACNW AND NORTHERN CA. THE MODELS ARE SHOWING SOME DIFFERENCES WITH
THE HANDLING AND STRENGTH OF THIS SYSTEM. THE 06/00Z GEM IS THE
QUICKEST/STRONGEST/WETTEST...WHILE THE TREND OF THE GFS AND EC HAS
BEEN SLOWER/WEAKER/DRIER. FOR NOW...FOLLOWED CLOSER TO THE DRIER
SOLUTIONS. UNFORTUNATELY IT APPEARS THE HIGH PRESSURE WILL HOLD ON
STRONG ENOUGH TO ONLY BRING LIGHT PRECIP.


.HYDROLOGICAL CONDITIONS...

WITH VERY LITTLE PRECIPITATION IN THE FORECAST, MOST RIVER LOCATIONS
ARE EXPECTED TO SLOWLY RECEDE OVER THE NEXT FEW DAYS.  SOME VERY
SMALL RISES ARE EXPECTED IN HIGH ELEVATION WATERSHEDS DUE TO
SNOWMELT.

ALL FORECAST POINTS ARE EXPECTED TO REMAIN BELOW MONITOR STAGE FOR
THE NEXT FIVE DAYS.



MORE INFORMATION ON THE CNRFC WEBSITE AT HTTP://WWW.CNRFC.NOAA.GOV

DRK/PF

$$





000
AGUS76 KRSA 051527
HMDRSA

ZCZC RNOWRKHMD 051459
TTAA00 KRNO DDHHMM

HYDROMETEOROLOGICAL DISCUSSION
NATIONAL WEATHER SERVICE / CALIFORNIA NEVADA RFC / SACRAMENTO CA
930 AM PST THU MAR 5 2015

...DRY THROUGH MUCH OF THE PERIOD...

.24 HOUR PRECIPITATION TOTALS (ENDING MAR 5 AT 400 AM PST)...

S/WV THAT PRODUCED MUCH OF THE ACTION OVER SRN CA AND NV OVER THE
EARLY HALF OF THE WEEK MOVED OUT OF THE REGION EARLY YESTERDAY...
LEAVING RIDGING AS THE DOMINATING FEATURE. THIS PRODUCED DRY
CONDITIONS FOR THE REGION OVER THE LAST 24-HRS.


.METEOROLOGICAL CONDITIONS (SHORT TERM: THU AM - SUN AM)...

WV/IR IMAGERY SHOWS AN UPR RIDGE SLIGHTLY CLOSER TO THE COAST THIS
MORNING AS COMPARED TO YESTERDAY...NOW ALIGNED ALONG 130W. A RATHER
WEAK AND MOISTURE STARVED UPR LOW IS SPINNING JUST WEST OF NORTHERN
BAJA (NEAR 30N/120W). THROUGH THE PERIOD...EXPECT THE WEAK UPR LOW
TO EJECT TOWARD THE ENE WITH THE UPR RIDGE MOVING OVER THE WEST
COAST. TEMPERATURES WILL WARM AND PRECIP WILL BE NON-EXISTENT OVER
THE SHORT-TERM.


.METEOROLOGICAL CONDITIONS (LONG TERM: SUN AM - WED AM)...

WHILE RIDGING WILL DOMINATE FOR THE EARLY PORTION OF NEXT WEEK...A
PATTERN SHIFT WILL SOON BE UPON US. BY TUESDAY...MODELS SHOW THE
RIDGE FLATTENING OUR AHEAD OF A DEVELOPING UPPER LOW OVER THE
EASTERN PACIFIC. THE 06Z GFS PLACES THIS UPPER LOW CENTERED NEAR
36N/143W BY EARLY WEDNESDAY...WITH AN INITIAL S/WV MOVING THROUGH
OREGON LATE TUES THROUGH EARLY WED. THIS FIRST WAVE IS EXPECTED TO
BRING LIGHT SHOWERS TO FAR NORTHERN PORTIONS OF CA AND SRN OREGON.
TIMING AND EXTENT IS STILL A LITTLE HAZY AT THIS POINT...WITH THE
00Z GFS BRINGING THE FEATURE THROUGH AS EARLY AS 00Z WED...THE 00Z
EC AROUND 06Z WED AND FURTHER SOUTH...AND THE 06Z GFS THE SLOWEST
AND FURTHEST NORTH. TOOK A COMPROMISE POSITION BETWEEN THE 00Z EC
AND THE 06Z GFS FOR THE CURRENT FORECAST...ONLY BRINGING IN LIGHT
PRECIP TO THE REGION FOR THE 06-12Z PERIOD WED AM.


.HYDROLOGICAL CONDITIONS...

WITH VERY LITTLE RAIN IN THE FORECAST, ALL RIVER LOCATIONS ARE
EXPECTED TO STAY WELL BELOW MONITOR LEVELS.  SOME VERY SMALL RISES
CAN BE EXPECTED IN THE SIERRA DUE TO SNOWMELT OVER THE NEXT FEW DAYS.


MORE INFORMATION ON THE CNRFC WEBSITE AT HTTP://WWW.CNRFC.NOAA.GOV

JM/DRK/JM/BW

$$





000
AGUS76 KRSA 051527
HMDRSA

ZCZC RNOWRKHMD 051459
TTAA00 KRNO DDHHMM

HYDROMETEOROLOGICAL DISCUSSION
NATIONAL WEATHER SERVICE / CALIFORNIA NEVADA RFC / SACRAMENTO CA
930 AM PST THU MAR 5 2015

...DRY THROUGH MUCH OF THE PERIOD...

.24 HOUR PRECIPITATION TOTALS (ENDING MAR 5 AT 400 AM PST)...

S/WV THAT PRODUCED MUCH OF THE ACTION OVER SRN CA AND NV OVER THE
EARLY HALF OF THE WEEK MOVED OUT OF THE REGION EARLY YESTERDAY...
LEAVING RIDGING AS THE DOMINATING FEATURE. THIS PRODUCED DRY
CONDITIONS FOR THE REGION OVER THE LAST 24-HRS.


.METEOROLOGICAL CONDITIONS (SHORT TERM: THU AM - SUN AM)...

WV/IR IMAGERY SHOWS AN UPR RIDGE SLIGHTLY CLOSER TO THE COAST THIS
MORNING AS COMPARED TO YESTERDAY...NOW ALIGNED ALONG 130W. A RATHER
WEAK AND MOISTURE STARVED UPR LOW IS SPINNING JUST WEST OF NORTHERN
BAJA (NEAR 30N/120W). THROUGH THE PERIOD...EXPECT THE WEAK UPR LOW
TO EJECT TOWARD THE ENE WITH THE UPR RIDGE MOVING OVER THE WEST
COAST. TEMPERATURES WILL WARM AND PRECIP WILL BE NON-EXISTENT OVER
THE SHORT-TERM.


.METEOROLOGICAL CONDITIONS (LONG TERM: SUN AM - WED AM)...

WHILE RIDGING WILL DOMINATE FOR THE EARLY PORTION OF NEXT WEEK...A
PATTERN SHIFT WILL SOON BE UPON US. BY TUESDAY...MODELS SHOW THE
RIDGE FLATTENING OUR AHEAD OF A DEVELOPING UPPER LOW OVER THE
EASTERN PACIFIC. THE 06Z GFS PLACES THIS UPPER LOW CENTERED NEAR
36N/143W BY EARLY WEDNESDAY...WITH AN INITIAL S/WV MOVING THROUGH
OREGON LATE TUES THROUGH EARLY WED. THIS FIRST WAVE IS EXPECTED TO
BRING LIGHT SHOWERS TO FAR NORTHERN PORTIONS OF CA AND SRN OREGON.
TIMING AND EXTENT IS STILL A LITTLE HAZY AT THIS POINT...WITH THE
00Z GFS BRINGING THE FEATURE THROUGH AS EARLY AS 00Z WED...THE 00Z
EC AROUND 06Z WED AND FURTHER SOUTH...AND THE 06Z GFS THE SLOWEST
AND FURTHEST NORTH. TOOK A COMPROMISE POSITION BETWEEN THE 00Z EC
AND THE 06Z GFS FOR THE CURRENT FORECAST...ONLY BRINGING IN LIGHT
PRECIP TO THE REGION FOR THE 06-12Z PERIOD WED AM.


.HYDROLOGICAL CONDITIONS...

WITH VERY LITTLE RAIN IN THE FORECAST, ALL RIVER LOCATIONS ARE
EXPECTED TO STAY WELL BELOW MONITOR LEVELS.  SOME VERY SMALL RISES
CAN BE EXPECTED IN THE SIERRA DUE TO SNOWMELT OVER THE NEXT FEW DAYS.


MORE INFORMATION ON THE CNRFC WEBSITE AT HTTP://WWW.CNRFC.NOAA.GOV

JM/DRK/JM/BW

$$





000
AGUS76 KRSA 041509
HMDRSA

- KRNO 041435
WRKHMD

HYDROMETEOROLOGICAL DISCUSSION
NATIONAL WEATHER SERVICE / CALIFORNIA NEVADA RFC / SACRAMENTO CA
930 AM PST WED MAR 4 2015

...DRY AND WARM INTO EARLY NEXT WEEK...

.24 HOUR PRECIPITATION TOTALS (ENDING MAR 4 AT 400 AM PST)...

WITH THE LOW PRESSURE SYSTEM EXITING THE STATE ON TUESDAY,
CONDITIONS WERE MOSTLY DRY ACROSS THE REGION, OUTSIDE OF A FEW
SHOWERS IN FAR SOUTHERN CA AND SOUTHERN AND EASTERN NEVADA. PRECIP
TOTALS WERE AROUND 0.1-0.2" ACROSS THE LUGUNA MOUNTAINS AND SOUTHERN
NEVADA. ONLY A FEW HUNDREDTHS FELL ACROSS EASTERN NEVADA.


.METEOROLOGICAL CONDITIONS (SHORT TERM: WED AM - SAT AM)...

THE S/WV TROF FROM YESTERDAY IS EXITING THE AREA EASTWARD ACROSS
NORTHERN BAJA THIS MORNING. NORTHERLY FLOW IS THE RULE ACROSS THE
AREA WITH THE UPR RIDGE AXIS REMAINING OFFSHORE BETWEEN 130W AND
140W. OVER THE NEXT SEVERAL DAYS...LOOK FOR THE UPR RIDGE TO PUSH
TOWARD THE EAST AND CENTER ITSELF OVER NORTHERN CA. THIS WILL SPELL
WARM AND DRY CONDITIONS FOR THE REGION.


.METEOROLOGICAL CONDITIONS (LONG TERM: SAT AM - TUE AM)...

CONDITIONS TO REMAIN DRY AS HIGH PRESSURE WILL REMAIN IN CONTROL
THROUGH THE FORECAST PERIOD. THE RIDGE WILL BEGIN TO FLATTEN A BIT
LATER IN THE PERIOD WITH THE APPROACH OF A LOW PRESSURE SYSTEM OFF
THE CA COAST.


.HYDROLOGICAL CONDITIONS...

WITH VERY LITTLE RAIN IN THE FORECAST, ALL RIVER LOCATIONS ARE
EXPECTED TO STAY WELL BELOW MONITOR LEVELS.  SOME VERY SMALL RISES
CAN BE EXPECTED IN THE SIERRA DUE TO SNOWMELT TOWARDS THE END OF THE
FORECAST PERIOD.


MORE INFORMATION ON THE CNRFC WEBSITE AT HTTP://WWW.CNRFC.NOAA.GOV

MI/DRK/MI/BW

$$





000
AGUS76 KRSA 031623
HMDRSA

- KRNO 031505
WRKHMD

HYDROMETEOROLOGICAL DISCUSSION
NATIONAL WEATHER SERVICE / CALIFORNIA NEVADA RFC / SACRAMENTO CA
930 AM PST TUE MAR 3 2015

...SHOWERS OVER PORTIONS OF NV AND SRN CA TODAY OTHERWISE DRY NEXT
SEVERAL DAYS...

.24 HOUR PRECIPITATION TOTALS (ENDING MAR 3 AT 400 AM PST)...

THE UPPER LEVEL LOW CONTINUED TO DROP SOUTH ON MONDAY, BRINING
PRECIP TO MUCH OF SOUTHERN CA... THE SIERRA... AND NEVADA.

THE HEAVIEST PRECIP WAS OBSERVED ACROSS SOUTHERN CA. LOCATIONS ALONG
THE COAST FROM POINT CONCEPTION SOUTHWARD RECEIVED AROUND 0.25",
WITH LOCALLY HEAVIER AMOUNTS NEAR 0.5" IN THE LAGUNA MOUNTAINS.
LOCATIONS ALONG THE COAST NORTH OF POINT CONCEPTION, SOUTH OF  SANTA
CRUZ, RECEIVED 0.1-0.2".

PRECIP TOTALS ACROSS THE SIERRA AND NEVADA WERE LIGHT AS WELL.
AMOUNTS RANGED FROM A FEW HUNDREDTHS IN THE NORTHERN SIERRA, TO
AROUND 0.25" IN THE CENTRAL AND SOUTHERN SIERRA. LOCATIONS IN
NORTHERN AND SOUTHERN NEVADA RECEIVED AMOUNTS NEAR 0.5", WHILE THE
CENTRAL PART OF THE STATE SAW TOTALS NEAR 0.25".


.METEOROLOGICAL CONDITIONS (SHORT TERM: TUE AM - FRI AM)...

AN UPPER TROUGH IS MOVING ACROSS NV THIS MORNING, BRINGING SHOWERS
ACROSS PORTIONS OF NRN/CNTRL NV.  AN UPPER LOW IS SITUATED OFF THE
BAJA CALIFORNIA COAST, AND A FEW SHOWERS ARE AFFECTING THE SRN
CHANNEL ISLANDS AND PERHAPS FAR SRN SAN DIEGO COUNTY.  BY THIS
AFTERNOON, EXPECT ENOUGH INSTABILITY TO GENERATE A FEW SHOWERS OVER
SW CA AND THE SRN SIERRA, AS WELL AS SE NV.  SHOWERS SHOULD END THIS
EVENING.  DRY NLY FLOW AND BUILDING HIGH PRESSURE ALOFT SHOULD KEEP
CONDITIONS DRY THROUGH THE REMAINDER OF THE SHORT-TERM FORECAST
PERIOD.  FREEZING LEVELS 3000-5000 FT NRN/CNTRL NV TODAY AND NEAR
6500 FT IN OTHER AREAS OF PRECIPITATION THIS AFTERNOON.


.METEOROLOGICAL CONDITIONS (LONG TERM: FRI AM - MON AM)...

HIGH PRESSURE WILL BE CENTERED ACROSS THE FORECAST AREA ON FRIDAY
RESULTING IN DRY CONDITIONS. THE HIGH WILL REMAIN SITUATED ACROSS
THE WESTERN US/EASTERN PACIFIC THROUGH THE FORECAST PERIOD.


.HYDROLOGICAL CONDITIONS...

WITH VERY LITTLE RAIN IN THE FORECAST, ALL RIVER LOCATIONS ARE
EXPECTED TO STAY WELL BELOW MONITOR LEVELS.  SOME VERY SMALL RISES
CAN BE EXPECTED IN THE SIERRA DUE TO SNOWMELT TOWARDS THE END OF THE
FORECAST PERIOD.


MORE INFORMATION ON THE CNRFC WEBSITE AT HTTP://WWW.CNRFC.NOAA.GOV

MI/KL/MI/BW

$$





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