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657
TXUS20 KNES 202217
SPENES
ZCZC NFDSPENES ALL
SPENES
CAZ000-ORZ000-WAZ000-
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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 12/20/14 2216Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-683-1404
LATEST DATA USED: GOES-15          2200Z           JANKOT
                                         AMSU              1906Z
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LOCATION...CALIFORNIA...OREGON...WASHINGTON...
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ATTN WFOS...OTX...PDT...REV...STO...MFR...SEW...PQR...EKA...
ATTN RFCS...NWRFC...CNRFC...
.
EVENT..CONTINUED HEAVY RAIN THREAT FOR PAC NW
.
SATELLITE ANALYSIS AND TRENDS...WATER VAPOR IMAGERY CONTINUES TO SHOW
MID TO UPPER LEVEL MOISTURE TRANSPORT ACROSS MUCH OF THE CENTRAL AND E
PAC WITH THE EXPERIMENTAL SATELLITE WIND PRODUCT DEPICTING A 170 KNOT
JET ALSO INCREASING UPPER LEVEL DIVERGENCE FOR MUCH OF THE DISCUSSION
REGION. IN ADDITION A SHORT WAVE IMPULSE IS APPROACHING SW WA AT THIS
TIME WHICH SHOULD ALSO HELP AID LIFT NEXT FEW HOURS LEADING TO PROLONGED
MOD TO HVY PRECIP. BLENDED TPW PRODUCT CONTINUES TO SHOW COPIOUS MOISTURE
ANOMALIES THROUGHOUT ENTIRE DISCUSSION REGION WITH PWATS RUNNING 225-250%
OF NORMAL..WHICH CORRELATES TO 1.0-1.4" PWATS.  A 1906Z AMSU MICROWAVE
PASS SHOWED INSTANTANEOUS AREAL AVG RAINFALL RATES OF .149-.433"/HR UPWIND
OF CURRENT PLACEMENT OF HEAVY RAINS AND THIS SEEMS TO BE SUPPORTED IN
MESONET/SFC OBS SUGGESTING RATES IN THE .1-.3"/HR RANGE. EXPERIMENTAL
QMORPH DID SHOW 6 HR ACCUMULATED RAINFALL RATES OF 1-1.5" ACROSS COASTAL
NW CA/SW OR ENDING AT 19Z.
.
A QMORPH GRAPHIC SHOWING 6 HR TOTALS ENDING AT 19Z SHOULD BE AVAILABLE
ON THE INTERNET ADDRESS LISTED BELOW IN APPROXIMATELY 10-15 MINUTES.
.
SHORT TERM OUTLOOK VALID 2230-0130Z...MEDIUM TO HIGH CONFIDENCE FACTOR
IN SHORT TERM OUTLOOK...EXPECT MOD TO HVY PRECIP TO CONTINUE ACROSS NW
CA NNE THOUGH MUCH OF CASCADES/W OR/W WA WHERE RATES OF .1-.4"/HR SHOULD
CONTINUE IN HEAVIEST BANDS. EXPECT HEAVIEST RATES IN THE OROGRAPHICALLY
FAVORED TERRAIN WHERE SLIGHTLY HIGHER RATES ARE POSSIBLE.
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....NESDIS IS A MEMBER OF NWSCHAT (NESDISSATELLITEPRECIP)....
....NESDIS IS A MEMBER OF 12 PLANET....
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FOR QUESTIONS AND COMMENTS CONCERNING THE SATELLITE
PRECIPITATION MESSAGES AND GRAPHICS PLEASE EMAIL
SSDPrecip@noaa.gov
.
FOR PRECIP MESSAGES AND GRAPHICS ON THE WEB:
http://www.ospo.noaa.gov/Products/atmosphere/spe/
.
FOR AUTOMATED SATELLITE PRECIPITATION ESTIMATES ON THE WEB:
http://www.star.nesdis.noaa.gov/smcd/emb/ff/CONUS.php
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LAT...LON 4959 12562 4926 11944 4050 12121 4033 12519
.
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