NOAA Office of Satellite and Product Operations
Satellite Precipitation Message

ZCZC NFDSPENES ALL
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PRZ000-
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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 06/08/21 1512Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-683-1404
LATEST DATA USED: GOES16 CH02 VIS_0.64, GOES16 CH09 WV_6.9, 12Z TJSJ SOUNDING, TJUA RADAR, HRW_PR_ARW, MESONET PRECIP RATES
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LOCATION...PUERTO RICO...
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ATTN WFOS...SJU...
ATTN RFCS...
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EVENT...WIDESPREAD RAINFALL OVER PUERTO RICO
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SATELLITE ANALYSIS AND TRENDS...THE LATEST GOES16 VISIBLE AND WATER VAPOR IMAGERY SHOWS STRONG LL EASTERLIES COUPLED WITH MOIST SOUTHWESTERLY FLOW IN THE MID-LVLS ASSOCIATED WITH A MID-UPPER LVL TROF SITUATED TO THE WEST OF THE ISLAND. THE 12Z TJSJ SOUNDING FURTHER ILLUSTRATES THIS WHILE HIGHLIGHTING A SHALLOW LAYER OF DRY AIR BETWEEN 450-400MB. THESE STRONG EASTERLIES COMBINED WITH FUNNELING TROPICAL MOISTURE FROM THE SW HAS LEAD TO THE DEVELOPMENT OF HEAVY SHOWERS AND THUNDERSTORMS PARTICULARLY OVER THE NORTHERN AND EASTERN PORTIONS OF THE ISLAND. WITH THE MOST RECENT MESONET PRECIP RATES APPROACHING 0.25"/HR AND PWATS NEARING 2" A FLASH FLOOD RISK IS POSSIBLE ESPECIALLY IN URBAN AND LOW-LYING AREAS.
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SHORT TERM OUTLOOK VALID 1800-0600Z...MEDIUM CONFIDENCE FACTOR
IN SHORT TERM OUTLOOK...ONGOING SHOWERS ARE EXPECTED TO CONTINUE AND BECOME MORE WIDESPREAD THROUGHOUT THE FORECAST PERIOD UNTIL AROUND 00Z. WIDESPREAD PRECIP IS AIDED BY SURFACE CONVERGENCE AND THE SLOW-MOVING MID-UPPER LVL TROF TO THE W. PWATS ARE TRENDING HIGHER WITH TIME INDICATING THAT A FLOOD RISK WILL SLOWLY INCREASE THROUGHOUT THE DAY UNTIL MODELS PULL PRECIP OFF THE COAST BY 00Z. FLOODING WILL BE MOST LIKELY IN URBAN AND LOW-LYING AREAS WITH AN ADDITIONAL RISK OVER PREVIOUSLY SATURATED GROUNDS.
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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 1887 6514 1804 6507 1749 6575 1747 6741 1787 6804
1841 6800
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No Graphics Available