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ZCZC NFDSPENES ALL SPENES HIZ000- . SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 08/25/18 1932Z SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-683-1404 LATEST DATA USED: GOES 15 VIS-IR-WV 1830Z / AMSU-PWAT 1630Z; KH . LOCATION...HAWAII... . ATTN WFOS...HFO... ATTN RFCS...APRFC... . EVENT...HEAVY RAINFALL THREAT FROM TROPICAL STORM LANE . SATELLITE ANALYSIS AND TRENDS...LATEST SATELLITE IMAGERY SHOWS A PERSISTENT TOWER OF DEEP CONVECTION NEAR THE ALMOST STATIONARY CIRCULATION CENTER OF TROPICAL STORM LANE. THE CLOUD TOP TEMPERATURES HAVE BEEN -75C OR COOLER. PER AMSU, TPW IS APPROACHING OR EXCEEDING 2.5 INCHES BETWEEN OAHU AND THE BIG ISLAND AND EXCEEDING 2 INCHES THROUGH KAUAI AND NIIHAU. AS LANE IS EXPERIENCING COPIOUS AMOUNTS OF WESTERLY SHEAR, IT IS STILL POSSIBLE THAT STORM-GENERATED TROPICAL RAINFALL COULD STILL FIND ITS WAY ACROSS HAWAII, ESPECIALLY THE ISLANDS OF OAHU, MOLOKAI, LANAI, AND MAUI. PHTO IS STILL REPORTING HEAVY RAIN EVEN THOUGH MUCH OF THE COLDER CLOUD TOPS ARE NOT PRESENT, LIKELY MEANING VERY EFFICIENT RAINFALL OF PURELY WARM PROCESS GENERATION. . SHORT TERM OUTLOOK VALID 1930-0130Z...MEDIUM CONFIDENCE FACTOR IN SHORT TERM OUTLOOK...LANE HAS NOT MOVED MUCH OVER THE PAST FEW DAYS, AND APPEARS TO STILL BE MEANDERING, MEANING THE EXTREMELY MOIST ENVIRONMENT AND CYCLONIC FLOW REGIME WILL CONTINUE FOR AT LEAST THE NEXT SIX HOURS. LONG FETCHES OF WARM AND MOIST FLOW WILL CONTINUE TO IMPACT THE ISLANDS. ON RADAR, AN EAST-TO-WEST ORIENTED RAIN BAND ACROSS NORTHERN OAHU IS SLOWLY DRIFTING OFF TOWARD THE WNW. ANOTHER BATCH OF HEAVIER RAINFALL IS ALSO IMPINGING ON THE SOUTHEAST COAST OF THE BIG ISLAND. AS THIS BATCH OF RAIN MOVES ASHORE, IT WILL PRECIPITATE OVER LAND THAT HAS SEEN CLOSE TO 10 INCHES OF RAIN IN THE LAST 24 HOURS AND 18 INCHES OF RAIN IN THE PAST 48 HOURS. ALTHOUGH THE RAINFALL RATES WITH WHAT IS CURRENTLY AFFECTING HAWAII ARE LESS IMPRESSIVE THAN IN THE PAST THREE DAYS, THE ADDITIONAL RAINFALL WILL EXACERBATE ANY FLOODING AND CONTRIBUTE TO A CONTINUED FLOOD THREAT. . ....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 2267 15419 1826 15446 1827 16099 2266 16084 . NNNN |
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