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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 11/12/07 1220Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-763-8678
LATEST DATA USED: GOES-11 1200Z  HANNA
NOAA AMSU: 0953Z  DMSP SSMI:  0337Z
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LOCATION...CALIFORNIA...OREGON...WASHINGTON...
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ATTN WFOS...OTX...PDT...MFR...SEW...PQR...EKA...
ATTN RFCS...NWRFC...CNRFC...
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EVENT...MODERATE TO HEAVY RAIN EVENT ON TAP FOR THE CASCADES AND COASTAL
RANGES FROM N CALIFORNIA INTO OREGON AND WASHINGTON
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SATELLITE ANALYSIS AND TRENDS...LATEST WATER VAPOR IMAGERY SHOWS A PLUME
OF MID AND HIGH LEVEL MOISTURE EXTENDING FROM 25N/165W INTO THE PACIFIC
NORTHWEST AND SOUTHERN BRITISH COLUMBIA.  THIS PLUME IS COINCIDENT
WITH A RATHER WELL DEFINED JET STREAM WITH GOES HIGH DENSITY DERIVED
140 KT JET STREAKS EMBEDDED IN THE FLOW NEAR 45N/145W AND 40N/157W.
MID-LEVEL SHORTWAVE TROF APPEARS TO BE AMPLIFYING ALONG 140W FUELED BY
POTENT PV ANOMALY NEAR 47N/140W.
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SURFACE LOW NEAR 47N/132W SHOULD BEGIN TO INTENSITY RATHER RAPIDLY OVER
THE NEXT 6-12HRS WITH FAVORABLE ORIENTATION TO ABOVE PV ANOMALY AND
LEFT EXIT REGION OF JET STREAK.  SYSTEM ALREADY STARTING TO SHOW SIGNS
OF INTENSIFYING WITH CUSP RAPIDLY SHOWING UP OVER THE LAST 3-6 HRS FROM
CNTRL BRITISH COLUMBIA TO 49N/131W.
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LOCAL AREA VWPS SHOWING 85H/70H SSWRLY FLOW BETWEEN 50-60KTS AND THIS IS
RAPIDLY INCREASING MOISTURE FLUX ALONG S/SW FACING TERRAIN.  HAVE NOT
HAD ANY POLAR PASSES MUCH WEST OF 126W SINCE AROUND 03Z BUT A JUST
RECEIVED 0953Z AMSU PASS DOES SHOW THE DEEPEST MOISTURE BEGINNING TO
ENCROACH ALONG COASTAL LOCATIONS FROM NW OR N INTO WA.  FURTHER WEST,
03Z PASS WAS SHOWING PRECIPITABLE WATER VALUES IN EXCESS OF 200%
OF CLIMATOLOGICAL NORMS NEAR 40N/140W AND THESE PW ANOMALIES SHOULD
MAKE THERE WAY ONSHORE OVER OR AND NW CA BETWEEN NOW AND 18Z WHICH
SHOULD ONLY SERVE TO FURTHER INCREASE 85H/70H MOISTURE FLUX ANOMALIES.
LL FLOW SHOULD EVENTUALLY VEER TO MORE WESTERLY WHICH COULD POTENTIALLY
SET UP A LONGER DURATION RAIN EVENT OVER PORTIONS OF SW OR AND NW CA.
WILL CONTINUE TO MONITOR SITUATION THROUGHOUT THE DAY.
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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 4995 12330 4975 12118 4895 12030 4774 12020 4643 12081
4500 12154 4326 12189 4220 12230 4174 12299 4117 12377
4137 12462 4290 12486 4585 12503 4869 12628 4980 12523
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