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ZCZC NFDSPENES ALL SPENES HIZ000- . SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 08/08/18 0921Z SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-683-1404 LATEST DATA USED: GOES-WEST IR 0900Z, AMSU 0708Z;MC . LOCATION...HAWAII... . ATTN WFOS...HFO... ATTN RFCS...APRFC... . EVENT...PASSAGE OF HURRICANE HECTOR . SATELLITE ANALYSIS AND TRENDS...HURRICANE HECTOR WAS 285 MI SE OF THE SOUTHERN TIP OF THE BIG ISLAND AS OF 0900Z AND WILL MOVE ALMOST DUE WEST, STAYING WELL SOUTH OF THE ISLAND, OVER THE NEXT SEVERAL HOURS. HECTOR APPEARS AS AN ANNULAR STORM IN GOES IR AND WV IMAGERY, SO THERE IS MINIMAL RAIN BANDING, KEEPING THE HEAVIER RAIN CLOSER TO THE CENTER AND OFFSHORE OF THE BIG ISLAND, AS SEEN IN RAIN RATES FROM AN AMSU PASS AT 0708Z. HOWEVER, HECTOR'S BROADER CIRCULATION INCLUDES A REGION OF HIGHER PW AS SEEN IN THE AMSU PASS, THE NORTHERN PORTION OF WHICH WILL BEGIN TO CROSS THE BIG ISLAND IN THE NEXT SEVERAL HOURS. PW LEVELS IN THIS REGION RANGE FROM 2-2.25", INCREASING FROM N TO S. WHILE THE HEAVIEST RAIN WILL REMAIN OFFSHORE, THE TROPICAL MOISTURE WILL ENABLE HEAVY RAIN ON THE WINDWARD SLOPES OF HIGHER ELEVATIONS. . SHORT TERM OUTLOOK VALID 0900-1500Z...MEDIUM CONFIDENCE FACTOR IN SHORT TERM OUTLOOK...HURRICANE HECTOR'S HEAVY RAIN WIL REMAIN OFFSHORE OF THE BIG ISLAND. HOWEVER, DEEP TROPICAL MOISTURE WILL BE BROUGHT ACROSS THE ISLAND. THIS WILL ENHANCE TERRAIN-DRIVEN CONVECTION, AND ALLOW FOR RAIN RATES OF UP TO 3" PER HOUR OVER HIGHER ELEVATIONS ON THE WINDWARD SLOPES OF THE ISLAND. . ....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 2262 15417 1826 15402 1828 16078 2254 16078 2256 16074 . NNNN |
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