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ZCZC NFDSPENES ALL SPENES VIZ000-PRZ000- . SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 10/21/21 1450Z SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-683-1404 LATEST DATA USED: GOES-16 1430Z HANNA . LOCATION...PUERTO RICO... . ATTN WFOS...SJU... ATTN RFCS... . EVENT...APPROACHING TROPICAL WAVE SHOULD BRING ISOLATED HEAVY RAIN THREAT THIS AFTERNOON AND INTO THE EVENING . SATELLITE ANALYSIS AND TRENDS...MORNING BLENDED PW ANALYSIS SHOWS THAT AFTER THE PASSAGE OF THE OVERNIGHT TROPICAL WAVE, A NARROW AXIS OF NOTABLE DRYING HAS BEEN OCCURRING OVER THE VI AND E PUERTO RICO AND THIS SHOULD CONTINUE TO SPREAD TO THE W THROUGHOUT THE REST OF THE MORNING. HOWEVER, UPSTREAM PW ANALYSIS WAS ALREADY SHOWING THAT A RATHER NARROW AXIS OF PW INCREASES WERE BEGINNING TO OCCUR OVER THE US VI AND THIS SHOULD QUICKLY SPREAD OVER E PUERTO RICO BY EARLY AFTERNOON AND OVER THE REST OF THE ISLAND THROUGHOUT THE REST OF THE DAY. VIS IMAGERY WAS SHOWING THAT THIS MOISTURE INCREASE WAS ALONG A NE TO SW ORIENTED TROPICAL WAVE THAT WAS EXTENDING FROM ROUGHLY NE OF THE NE CARIBBEAN ISLANDS SW TO JUST W OF ANGUILLA AND JUST E OF THE US VI AND THEN FURTHER SW INTO THE E CARIBBEAN. WV IMAGERY WAS NOT SHOWING MUCH IN THE WAY OF UPPER LEVEL SUPPORT TO AID ONGOING TROPICAL WAVE WITH THE EXCEPTION OF SOME UPPER LEVEL DIFFLUENCE THAT WAS CENTERED MOSTLY N OF THE ISLANDS BETWEEN HEIGHT FALLS WELL N OF THE AREA AND AN UPPER LEVEL HIGH CENTERED OVER THE W CARIBBEAN. ALTHOUGH REMAINING CIRRUS HAS DELAYED DIURNAL HEATING, HAVE BEGUN TO SEE SOME INCREASING CU IN FAVORED TERRAIN AND SEA BREEZE CIRCULATIONS AND WOULD EXPECT THAT AS THE TROPICAL WAVE CONTINUES W THROUGHOUT THE DAY AN INCREASING THREAT FOR LOCALIZED HEAVY RAIN THREAT SHOULD DEVELOP OVER THE VI AND E PUERTO RICO BY EARLY AFTERNOON AND THEN SPREADING W TO PORTIONS OF W PUERTO RICO BY LATE AFTERNOON AND THIS 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 1906 6498 1893 6441 1861 6414 1820 6411 1783 6423 1759 6483 1745 6596 1753 6692 1805 6768 1852 6748 1881 6611 . NNNN |
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