Hydrometeorological Discussion
Issued by NWS California-Nevada RFC

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AGUS76 KRSA 281737
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ZCZC RNOWRKHMD 281714
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HYDROMETEOROLOGICAL DISCUSSION
NATIONAL WEATHER SERVICE / CALIFORNIA NEVADA RFC / SACRAMENTO CA
930 AM PDT SAT MAR 28 2015

...PERIODS OF LIGHT PRECIP EXPECTED OVER NORTHERN AREAS THROUGH THE
WORK WEEK...

.24 HOUR PRECIPITATION TOTALS (ENDING MAR 28 AT 500 AM PDT)...

A WEAK S/WV PUSHED THROUGH THE NORTH COAST OVERNIGHT...BRINGING
PRECIP TO THE SMITH AND UPPER KLAMATH BASINS. THE SMITH BASIN PICKED
UP 0.1-0.2" PRECIP...WITH UP TO 0.4" MEASURED OVER MOST FAVORED
HIGHER TERRAIN. WEST SLOPES OF THE SRN OREGON CASCADES MEASURED
AROUND 0.05-0.1" PRECIP...WHILE EAST OF THE CREST JUST A FEW
HUNDREDTHS OF AN INCH FELL.


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

SATELLITE THIS MORNING SHOWS A WEAK S/WV PUSHING THROUGH CENTRAL
CA...THOUGH MOISTURE STARVED AND PRODUCING NOTHING IN THE WAY OF
SHOWERS ANY MORE. ANOTHER UPPER LOW CAN BE SEEN APPROACHING THE
PACIFIC NORTHWEST...WITH A FRONTAL SYSTEM REACHING DOWN TOWARDS NRN
CA. ALL OF THE ENERGY WITH THIS SYSTEM IS EXPECTED TO REMAIN WELL TO
THE NORTH OF THE FORECAST AREA. THE ONLY PRECIP POSSIBLE TODAY AND
SUNDAY ARE SOME INSTABILITY SHOWERS OVER THE NORTHERN SIERRA...AND
EVEN THAT SHOULD BE LIGHT AND ISOLATED.

BY NEXT WEEK...A SERIES OF WEAK S/WV`S ARE EXPECTED TO MOVE THROUGH
THE FAR NORTH...PROMPTING PERIODS OF SHOWERS OFF AND ON. THE FIRST
SYSTEM IS PEGGED TO BE THE STRONGEST...WITH THE EC AND THE GFS
AGREEING ON A BRIEF PERIOD OF LIGHT TO MODERATE SHOWER ACTIVITY OVER
THE SMITH BASIN EARLY TUESDAY MORNING. THIS S/WV LOSES STEAM QUICKLY
AS IT PUSHES INLAND...AND ONLY LIGHT SHOWERS ARE EXPECTED OVER THE
SRN OREGON CASCADES AND FURTHER INLAND TOWARDS NRN NEVADA. THE EC
BRINGS ANOTHER PULSE THROUGH EARLY WEDNESDAY...AND THE EC AND GFS
BOTH DRAG ANOTHER THROUGH WEDNESDAY NIGHT. EACH OF THESE ROTATE
AROUND AN UPPER LOW DROPPING OUT OF THE PACIFIC NORTHWEST...WHICH
SHOULD AT LEAST BRING COOLING AND BREEZY NORTH WINDS TO THE
REMAINDER OF THE FORECAST AREA. THE PARENT TROUGH IS EXPECTED TO
PUSH THROUGH NEVADA THURS AND THURS NIGHT...WHICH SHOULD BRING AN
END TO THE MOIST SPELL FOR THE NORTH AND ALLOW THE RIDGE TO BUILD
BACK IN AT LEAST BRIEFLY ON FRIDAY.


.HYDROLOGICAL CONDITIONS...

WARMER THAN NORMAL TEMPERATURES OVER THE NEXT FEW DAYS IS EXPECTED
TO INCREASE SNOWMELT RUNOFF IN SIERRA NEVADA BASINS WITH SNOW. RISES
IN STAGE IN THESE RIVER BASINS IS FORECAST TO BE ONLY MINOR.

ALL RIVERS AND STREAMS IN THE CNRFC FORECAST AREA ARE CURRENTLY
BELOW ...AND ARE EXPECTED TO REMAIN BELOW MONITOR LEVELS THROUGH
NEXT WEDNESDAY.



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

JM/SS

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