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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 07/29/07 2300Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-763-8678
LATEST DATA USED: GOES-12 2245Z GG
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LOCATION...SW TEXAS...
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ATTN WFOS...CRP...EWX...
ATTN RFCS...WGRFC...
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EVENT...RAPID DEVELOPMENT
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SATELLITE ANALYSIS AND TRENDS...RAPID DEVELOPMENT OF THUNDERSTORMS IN
CENTRAL WEBB TO SW MCMULLEN COUNTY IN SW TX IS CAPABLE OF PRODUCING
EXTREME RAINFALL OVER A SHORT PERIOD OF TIME.  IR LOOP SHOWS THE TOPS
HAVE COOLED BELOW -70C OVER THE LAST FEW HOURS WITH AN OVERSHOOTING
TOP IN CENTRAL WEBB COUNTY REACHING -76C WITHIN A VERY DEEP MOISTURE
ENVIRONMENT WHERE GOES SOUNDER PWS ARE WELL OVER 2.2" AND GPS NETWORK WITH
A MAXIMUM OF 2.4". SELY FLOW IS ALSO VERY STRONG WITH CU STREAMERS SEEN
IN VIS LOOP SURGING INTO THE COMPLEX AHEAD OF A DRIER/OUTFLOW REGIME FROM
CELLS OVER KENEDY COUNTY EARLIER.  SO WITH HIGH MOISTURE THROUGHOUT THE
PRECIPITABLE COLUMN AND VERY GOOD MOISTURE FLUX INTO THE CELLS RATES
IN EXCESS OF 3"/HR COULD BE EXPECTED WITH THE COLDEST TOPPED CELLS
WHILE SLIGHTLY WARMER TOPS WOULD STILL BE CAPABLE OF RATES OVER 2"/HR.
AUTOMATED TECHNIQUES OVER THE LAST 3HR HAVE TOTALS OF 4" OVER S LASALLE
WITH A BAND OF 2" SO FAR OVER C WEBB COUNTY.  OVER THE LAST 2 IMAGES VERY
COLD OVERSHOOTING TOPS HAVE DEVELOPED OVER SW WEBB COUNTY AS WELL...AND
ARE CAPABLE OF THE EXTREME RATES DESCRIBED ABOVE AS WELL.
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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 2850 9826 2776 9807 2729 9957 2807 10004
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