Satellite Precipitation Estimates (TXUS20 KWBC)
Issued by NWS

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000
TXUS20 KNES 231808
SPENES
ZCZC NFDSPENES ALL
SPENES
CAZ000-ORZ000-WAZ000-
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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 09/23/14 1808Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-683-1404
LATEST DATA USED: GOES-15 1741Z       WARREN
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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...SATELLITE FEATURES FOR POTENTIALLY HEAVY RAIN EVENT FOR TONIGHT
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SATELLITE ANALYSIS AND TRENDS...LATEST WATER VAPOR LOOP DEPICTS
WELL-DEFINED UL LOW CURRENTLY CENTERED NEAR 45N 140W GRADUALLY TRACKING E
WITH TROF CONTINUING TO AMPLIFY IN RESPONSE TO POTENT UL JET.  THIS SYSTEM
IS CERTAINLY IMPRESSIVE ALREADY WITH ANOMALOUSLY LOW HEIGHTS ALONG WITH
STRONG STRATOSPHERIC INTRUSION SIGNALS INDICATED BY THE RGB AIRMASS AND
OZONE ANOMALY PRODUCTS.  MORE FAVORABLE DIFFLUENT FLOW ALOFT IS TAKING
SHAPE JUST OFFSHORE OF THE PAC NW AS THIS JET STRENGTHENS IN COLLABORATION
WITH  A PRONOUNCED SHORTWAVE IMPULSE THAT IS OBSERVED NEAR BASE OF TROF
(36N 140W) TRACKING E.  OVER THE PAST COUPLE OF HRS A SUBTLE BAROCLINIC
LEAF CLOUD SIGNATURE HAS BEGUN TO TAKE SHAPE E OF SHORTWAVE NEAR 40N 130W.
THIS IS BEST NOTED IN EARLY MORNING VISIBLE IMAGERY ALONG WITH EXPANSION
OF TEXTURED CLOUD TOPS EMBEDDED IN THIS CLOUD FEATURE.  MODERATE TO HEAVY
RAINS SHOULD DEVELOP WITHIN AND S OF THIS BAROCLINIC LEAF OVER THE NEXT
SEVERAL HRS AND PUSH ENE.

PLUME OF ANOMALOUSLY HIGH MOISTURE (PW VALUES NEAR 1.5") ASSOCIATED WITH
THIS SYSTEM IS SURGING NNE AHEAD OF SYSTEM AND THIS ALONG WITH FAVORABLE
SWRLY FLOW SHOULD LEAD TO LOCALIZED HEAVY RAINS IN THE FAVORED TERRAIN
ACROSS NWRN CA/WRN OR/SW WA BEGINNING LATER THIS EVENING AND INTO TONIGHT.
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AN ANNOTATED SATELLITE GRAPHIC SHOWING THE HEAVY PRECIPITATION
THREAT AREA SHOULD BE AVAILABLE ON THE INTERNET ADDRESS LISTED
BELOW IN APPROXIMATELY 10-15 MINUTES.
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SHORT TERM OUTLOOK VALID 1800-0100Z...MEDIUM-HIGH CONFIDENCE FACTOR
IN SHORT TERM OUTLOOK...OVER THE NEXT 6 TO 12 HRS EXPECTING BAROCLINIC
LEAF TO EVOLVE INTO A MORE MATURE ELONGATED CLOUD BAND AS AREA OF LOW
PRESSURE TRACKS E AND UL JET/SHORTWAVE ENERGY ENHANCES BAROCLINIC AXIS.
THIS COMBINATION OF POTENT ENERGY ARRIVING AND AVAILABLE MOISTURE NEARING
200% ABOVE CLIMO MAY LEAD TO PERIODS OF LOCALIZED HEAVY RAINS IN THE
FAVORED TERRAIN.  GIVEN THE RATHER BLOCK UL FLOW PATTERN ACROSS NORTH
AMERICA...MAIN CLOUD BAND THAT EVENTUALLY DEVELOPS MAY LINGER ACROSS
THE REGION THE NEXT 24-36 HRS.
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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 4676 12289 4614 12098 4395 12148 4158 12240 4032 12498
4271 12568 4511 12444
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