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TXZ000-
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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 05/04/08 1025Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-763-8678
LATEST DATA USED: 1015Z  GOES-12   TEB
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LOCATION...TEXAS...
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ATTN WFOS...CRP...EWX...
ATTN RFCS...WGRFC...
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EVENT...STATIONARY STORM BEGINNING TO MOVE
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SATELLITE ANALYSIS AND TRENDS...A STORM THAT HAS BEEN NEARLY STATIONARY
SINCE BEFORE 06Z JUST ACROSS THE RIO GRANDE IN COAHUILA APPEARS TO BE
STARTING TO MOVE TO THE EAST IN RESPONSE TO AN EMBEDDED SHORTWAVE THAT
INITIATED A BAND OF CELLS IN NORTHERN MEXICO.  THIS LINE HAS MERGED WITH
THE UPWIND EDGE OF THE STATIONARY CONVECTIVE MASS AT 1015Z AND WILL MOVE
THE HEAVY RAIN EASTWARD INTO WEBB COUNTY, TEXAS NEAR LAREDO.  THIS COMPLEX
HAS HAD A HISTORY OF OVERSHOOTING TOPS ALONG WITH THE STATIONARY FEATURE
WHICH HAS ENTRAINED DEEP MOISTURE.  ESTIMATED RAIN RATES OF UP TO 4.00"
OR MORE PER HALF HOUR WILL LIKELY DIMINISH BUT 2.00" PER HALF-HOUR RATES
CAN BE EXPECTED DURING THE NEXT HOUR OR TWO.  FLASH FLOODING SHOULD
BE EXPECTED ESPECIALLY IN LOW LYING AREAS OR URBAN AREAS.  ALSO, WITH
THE DEBRIS SHIELD MASKING DOWNSTREAM ACTIVITY UNDER THE CANOPY OF HIGH
CLOUDS, IT IS HARD FROM A SATELLITE PERSPECTIVE TO KNOW WHAT IS GOING
ON IN LASALLE AND MCMULLEN AND DUVAL COUNTIES BUT THE INFLECTION IN THE
WAVE SUGGESTS THAT THE HEAVIEST RAINS WILL MOVE ALMOST DUE EAST ACROSS
WEBB INTO DUVAL COUNTY.
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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 2890 9956 2836 9869 2743 9976 2799 10024
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