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ZCZC NFDSPENES ALL SPENES PRZ000- . SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 08/21/18 1920Z SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-683-1404 LATEST DATA USED: GOES 16 VIS 1830Z; FCS . LOCATION...PUERTO RICO... . ATTN WFOS...SJU... ATTN RFCS... . EVENT...HEAVY RAINFALL WESTERN SIDE OF PUERTO RICO . SATELLITE ANALYSIS AND TRENDS...THE LATEST SATELLITE VISIBLE IMAGERY SHOWS AN EXPLOSIVELY DEVELOPING AREA OF THUNDERSTORMS OVER THE WESTERN HALF OF THE ISLAND OF PUERTO RICO. LOW LEVEL WIND FLOWING FROM THE EAST ACROSS PUERTO RICO AND CONVERGES OVER CENTRAL AND WESTERN PUERTO RICO WITH WINDS ALONG THE NORTH SHORE FROM THE ENE AND WINDS FROM THE ESE ALONG THE SOUTH CENTRAL COAST FOCUSING LOW LEVEL MOISTURE TO WESTERN PUERTO RICO. BASED ON SATELLITE IMAGERY INDICATING AN INCREASE IN AERIAL DEVELOPMENT, A HEAVY RAINFALL THREAT UNTIL DAYTIME HEATING SUBSIDES WITH POTENTIAL FLASH FLOODING ACROSS CENTRAL AND WESTERN PUERTO RICO WITH HIGHER RAINFALL AMOUNTS ALONG THE HIGHER TERRAIN IN THE CENTRAL REGIONS OF PUERTO RICO. PW AMOUNT 1.5 IN. EARLY MORNING SOUNDING INDICATED 1500 J/KG AVAILABLE ENERGY WITH A LI=-3 C DEGREES. DAYTIME HEATING HAS INCREASED THE ENERGY AVAILABLE AND THE POTENTIAL FOR HEAVIER CONVECTIVE ACTIVITY WITH MODERATE TO HEAVY RAINFALL EXPECTED THROUGHOUT THE DAY FOR THE CENTRAL AND WESTERN HALF OF THE ISLAND OF PUERTO RICO UNTIL SUNSET AROUND 23Z. . 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 1930-2330Z...MEDIUM CONFIDENCE FACTOR IN SHORT TERM OUTLOOK...EXPECT MODERATE TO HEAVY RAINFALL IN THE NEXT FEW HOURS IN THE TIME OF MAXIMUM DAYTIME HEATING. CENTRAL AND WESTERN PUERTO RICO CAN EXPECT SMALL STREAM, CANYON AND URBAN FLASH FLOODING WITH HEAVIER DOWNPOURS UNTIL EVENING. . ....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 1865 6722 1862 6721 1862 6536 1785 6583 1781 6773 . NNNN |
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