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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 02/12/09 0137Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-763-8678
LATEST DATA USED: GOES-11 0115Z KUSSELSON
NOAA AMSU:2157Z  NASA AMSR-E:2100Z DMSP SSMI/S:17Z
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LOCATION...N CALIFORNIA...
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ATTN WFOS...REV...MFR...STO...EKA...
ATTN RFCS...CNRFC...
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EVENT...COOLING TOPS WITH FRONT INTO N SIERRAS...LOCALLY HVY SNOW...
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SATELLITE ANALYSIS AND TRENDS...FRONTAL BOUNDARY MOVING INTO THE NORTHERN
SIERRAS AND CLOUD TOP COOLING ALLOWING FOR INCRD SNOW PRODUCTION ABOVE
4500 FEET.  WITH CLOUD TOP TEMPS OF -40C OR COLDER THIS IS SIGNIFICANTLY
COOLER THAN EQUILIBRIUM LEVEL TEMPS OF NEAR -20C AT AREA RADIOSONDE SPOTS
AND SO THE BURSTS OF HVY SNOW CAN CONTINUE AS THE BOUNDARY CONTINUES
EAST AND SE.  PW VALUES WITHIN THE BAND HAD BEEN IN THE 0.5" TO 0.6"
RANGE...BUT HAVE LOWERED AS THEY HAVE BOTH PENETRATED LAND AND PUSHED INTO
THE HIGHER ELEVS.   MOISTURE AT ABOUT 0.5" AROUND AND JUST AHEAD OF THE
NW CA COASTAL UPPER LOW WILL ADD SOME ADDITIONAL INSTABILITY SNOW SHOWERS
TO THE SIERRAS LATER TONIGHT.  UPPER LOW STILL TWIRLING AROUND JUST OFF
THE TIP OF THE NW CA COAST AND UPSTREAM SYSTEM (CENTERED 48N/136W) NOT
QUITE KICKING IT MORE EAST YET...BUT THAT WILL CHANGE TONIGHT AS UPSTREAM
SYSTEM CONTINUES NEGATIVE TILTED TOWARD THE NORTHWEST.   WILL CONTINUE
TO MONITOR...SEE ANALYSIS GRAPHIC ON HOME PAGE AT ADDRESS BELOW...
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SEE NCEP HPC DISCUSSION AND QPF/S FOR FORECAST.
....NESDIS IS A MEMBER OF 12 PLANET....
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SSD/SAB WEB ADDRESS FOR PRECIP ESTIMATES:
HTTP://WWW.SSD.NOAA.GOV/PS/PCPN/
...ALL LOWER CASE EXCEPT /PS/PCPN/
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LAT...LON 4173 12196 3832 11986 3779 12117 4107 12361
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