Satellite Precipitation Estimates (TXUS20 KWBC)
Issued by NWS

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TXUS20 KNES 281141
SPENES
ZCZC NFDSPENES ALL
SPENES
CAZ000-ORZ000-WAZ000-
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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 11/28/14 1141Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-683-1404
LATEST DATA USED: GOES-15    1111Z                           JANKOT
                                        0540Z          AMSU
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LOCATION...CALIFORNIA...OREGON...WASHINGTON...
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ATTN WFOS...PDT...MFR...SEW...PQR...EKA...
ATTN RFCS...NWRFC...CNRFC...
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EVENT...FOCUS OF HEAVIEST PRECIP IN N CASCADES AND NW CA
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SATELLITE ANALYSIS AND TRENDS...FOR NW CA: WATER VAPOR DEPICTS SHORTWAVE
AT APPROXIMATELY 38.35N, 128.50W THAT SHOULD AID LIFT IN COMBINATION WITH
SFC CONVERGENCE ASSOCIATED WITH FRONTAL BAND APPROACHING NW CA. BLENDED
TPW PRODUCT DEPICTS NARROW MOISTURE PLUME WITH A CONNECTION TO HI...THIS
MOISTURE PLUME HAS PWATS AS HIGH AS 1.2" JUST OFFSHORE WHICH CORRESPONDS
TO 175-190% OF NORMAL. IR IMAGERY HAS SHOWN INCREASING ENHANCEMENT
ASSOCIATED WITH THIS FRONT AND A AMSU PASS AT 0540Z DID DEPICT AN
INSTANTANEOUS AREAL AVERAGE RAINFALL RATE OF .08".  GIVEN THAT IR HAS
SHOWN INCREASING ENHANCEMENT AND 30-35 KNOT 85H SW FLOW WOULD EXPECT
OROGRAPHICALLY FAVORED SPOTS TO SEE HIGHER RATES OF .1-.3"/HR.

FOR N CASCADES WATER VAPOR DEPICTS SHORTWAVE AT 45.24N 130.32W THAT MAY
INCREASE UPPER LEVEL DIVERGENCE LEADING TO INCREASED LIFT NEXT SEVERAL
HOURS AS COLD FRONT BOUNDARY SLIPS SOUTH NOW ACROSS NW WA. BLENDED TPW
PRODUCT DEPICTS MOISTURE ANOMALIES RUNNING CLOSE TO 225-250% OF NORMAL
FOR N CASCADES WITH PWATS NEARING 1.0". WITH 85H SW FLOW INTO N CASCADES
COUPLED WITH INCREASED SFC CONVERGENCE WITH FRONT WOULD EXPECT MOD TO
HEAVY PRECIP TO CONTINUE THIS MORNING. MESONET HAS SHOWN RATES AS HIGH AS
.4"/HR AND WOULD GENERALLY EXPECT .25-.5"/HR RATES IN THE OROGRAPHICALLY
FAVORED SPOTS NEXT SEVERAL HOURS.

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SHORT TERM OUTLOOK VALID 1200-1800Z...MEDIUM CONFIDENCE FACTOR
IN SHORT TERM OUTLOOK...WOULD EXPECT MOD TO HVY PRECIP TO CONTINUE IN N
CASCADES WITH RATES AS HIGH AS .25-.5"/HR IN THE HEAVIEST PRECIP/ FAVORED
TERRAIN. WOULD EXPECT 1-2" AMOUNTS THROUGH 18Z. FURTHER SOUTH IN NW CA
EXPECT FRONTAL BAND TO SPREAD MOD PRECIP NEXT SEVERAL HOURS WITH LIGHTER
.1-3"/HR RATES IN OROGRAPHICALLY FAVORED SPOTS AND UPWARDS OF .5-1.0"
THROUGH 18Z.
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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
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FOR PRECIP MESSAGES AND GRAPHICS ON THE WEB:
http://www.ospo.noaa.gov/Products/atmosphere/spe/
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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 4923 12161 4141 12212 4029 12456 4795 12593
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