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ZCZC NFDSPENES ALL SPENES PRZ000- . SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 07/30/19 1204Z SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-683-1404 LATEST DATA USED: GOES 16 WV;AMSU/BLTPW;FCS . LOCATION...PUERTO RICO... . ATTN WFOS...SJU... ATTN RFCS... . EVENT...FLASH FLOODING . SATELLITE ANALYSIS AND TRENDS...GOES 16 WV IMAGERY SHOWS A GROWING THUNDERSTORM COMPLEX NORTHEAST OF PUERTO RICO AND THE USVI WITH CONVECTIVE ELEMENTS WITH GROWING THUNDERSTORMS IN THE SOUTHEASTERN CORNER OF THE ISLAND MOVING SOUTHEAST TOWARDS THE SAN JUAN METRO AREA. THE SATELLITE DERIVED AMSU PW QUANTITIES OF 2.5 INCHES AND SURFACE MOISTURE CONVERGENCE FIELDS ARE MOST FAVORABLE OVER WESTERN PUERTO RICO. GPS PW RANGES 2.05-2.36 INCHES AND AMSU SENSORS INDICATE 2.2 INCHES. THE BLENDED TPW PRODUCT SHOWS MOISTURE ON THE UPPER END OF THE SCALE AND THE 850MB VWP WINDS SHOW INFLUX FROM THE SOUTHEAST WITH EAST NORTHEAST SURFACE WINDS AT SAN JUAN AND A 0.88 INCH PER HOUR RATE BETWEEN 1041 AND 1056Z AND A 0.32 IN RECENT OBSERVATIONS. . AN ANNOTATED SATELLITE GRAPHIC SHOWING THE HEAVY PRECIPITATION THREAT AREA SHOULD BE AVAILABLE ON THE INTERNET ADDRESS LISTED BELOW IN APPROXIMATELY 10-15 MINUTES. . SHORT TERM OUTLOOK VALID 1200-1800Z...MEDIUM CONFIDENCE FACTOR IN SHORT TERM OUTLOOK...PUERTO RICO AND THE USVI ARE ON THE PERIPHERY OF A GROWING STORM WITH A POTENTIAL TO GENERATE HEAVY RAINFALL AND FLASH FLOODING BECAUSE OF THE AVAILABLE MOISTURE AND ENHANCED UPWARD MOTION FIELDS INDICATED USING REMOTE SENSING TOOLS. RADAR SHOWS A STEADY STREAM OF CONVECTIVE ELEMENTS APPROACHING PUERTO RICO FROM THE SOUTHEAST WITH HIGHER REFLECTIVE VALUES IN STORM CELLS WITH OVERSHOOTING TOPS SEEN ON SATELLITE IMAGES. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY. . ....NESDIS IS A MEMBER OF NWSCHAT (NESDISSATELLITEPRECIP).... ....NESDIS IS A MEMBER OF 12 PLANET.... . FOR QUESTIONS AND COMMENTS CONCERNING THE SATELLITE PRECIPITATION MESSAGES AND GRAPHICS PLEASE EMAIL SSDPrecip@noaa.gov . FOR PRECIP MESSAGES AND GRAPHICS ON THE WEB: http://www.ospo.noaa.gov/Products/atmosphere/spe/ . FOR AUTOMATED SATELLITE PRECIPITATION ESTIMATES ON THE WEB: http://www.star.nesdis.noaa.gov/smcd/emb/ff/CONUS.php . LAT...LON 1857 6719 1857 6719 1854 6547 1779 6575 1783 6756 . NNNN |
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