Satellite Precipitation Estimates (TXUS20 KWBC)
Issued by NWS

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000
TXUS20 KNES 311629
SPENES
ZCZC NFDSPENES ALL
SPENES
TXZ000-
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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 08/31/15 1628Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-683-1404
LATEST DATA USED: GOES-13: 1615ZDS
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LOCATION...SE TEXAS...
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ATTN WFOS...HGX...CRP...EWX...
ATTN RFCS...WGRFC...
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NESDIS IS CONTINUING TO ACCEPT APPEALS ON THE RETIREMENT OF THE SPENES
PRODUCT.  APPEALS CAN BE SUBMITTED BY EMAILING JOHN.SIMKO@NOAA.GOV
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EVENT...LOCALLY HVY RAINFALL
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SATELLITE ANALYSIS AND TRENDS...WV IMAGERY SHOWS THE COMPACT UPPER LOW
THAT IS OVER SRN TX MOVING VERY LITTLE. MODERATELY DIFFLUENT FLOW ALOFT IS
INDICATED BY SATL WINDS ALONG THE MIDDLE AND UPPER PARTS OF THE TX COAST
CENTERED OVER A GROWING NUMBER OF STRENGTHENING CONVECTIVE CELLS. CLOUD
TOPS HAVE RAPIDLY COOLED TO -60C OVER MATAGORDA COUNTY DURING THE PAST
30-60 MIN.WHILE BLENDED TPW SHOWS NR 2" PW`S NR THE SRN TIP OF TX AND
WORKING THEIR WAY NWD WITH 1.5" OR GREATER PW`S OVER THE SWRN PART OF
THE DISCUSSION AREA...A POCKET OF NOTICEABLY DRIER AIR IS EVIDENT ALONG
THE ENTIRE GULF COAST EXTENDING W TO LCH AND THE UPPER TX COAST. IN
ADDITION...EXPERIMENTAL CIRA LAYERED PW PRODUCT SHOWS A DRY NOTCH AT
MID-UPPER LVL`S FROM FAR SRN TX TO SW LA THAT WILL INHIBIT THE DEPTH OF
THE MOIST LAYER FOR CELLS TO DRAW FROM AND THUS HVY RAIN THREAT. THAT
BEING SAID...SIGNIFICANT INSTABILITY HAS DVLPD OVER S/SE TX GIVEN STRONG
DIURNAL HEATING WITH 3000-4000 J/KG SBCAPE PER GOES SOUNDER. SLIGHTLY
BETTER SOUNDER K-INDEX VALUES ALSO APPEAR TO BE SLOWLY NUDGING THEIR
WAY INLAND FROM THE WRN GULF AT LEAST TO COASTAL LOCATIONS BETWEEN RKP
AND BYY. LOW LVL CNVGC IS MAXIMIZED NR AND JUST OFFSHORE OF BYY WHERE
A WEAK TROF MAY BE DVLPG.
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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 1630-1930Z...MEDIUM CONFIDENCE FACTOR
IN SHORT TERM OUTLOOK...LIFT FROM MID-UPPER LVL VORT COMBINED WITH
STRONG INSTABILITY SHOULD ENCOURAGE DVLPMT OF ADDTL CNVCTN THIS
AFTERNOON. HOWEVER...MID-LVL DRYNESS SHOULD LIMIT THE THREAT FOR HVY
RAINS FOR ALL BUT THE NEAR COASTAL LOCATIONS. PROPAGATION VECTORS DO SHOW
VERY WEAK FLOW SO ANY CELLS THAT DVLP WITHIN THE DIFFLUENT ZONE ALONG
THE TX COAST SHOULD MOVE VERY SLOW TO THE N OR NE. SERLY LOW LVL INFLOW
FROM THE GULF WILL KEEP THE THREAT FOR SHWRS/TSTORMS ONGOING ALONG THE
MIDDLE TX COAST  THIS AFTERNOON.
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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 3006 9510 2907 9428 2732 9707 2774 9821 2974 9674

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