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ZCZC NFDSPENES ALL SPENES HIZ000- . SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 09/13/18 0747Z SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-683-1404 LATEST DATA USED: GOES-15 IR-WV 07Z / MIMIC-TPW2 06Z / AMSU-PWAT 0710Z; BAK . LOCATION...HAWAII... . ATTN WFOS...HFO... ATTN RFCS...APRFC... . EVENT...HEAVY RAIN . SATELLITE ANALYSIS AND TRENDS...TROPICAL STORM OLIVIA MOVING AWAY FROM THE ISLAND CHAIN BUT GOES-15 6.5 WV IMAGERY INDICATES A NEARLY STATIONARY BOUNDARY IN PLACE E TO W ACROSS OAHU, MOLOKAI, AND MAUI. THIS BOUNDARY IS A RESULT OF CONVERGENCE OF THE N SIDE OF OLIVIA'S CIRCULATION AND THE SOUTHERN PART OF AN UPPER LEVEL LOW AT 250 MB CENTERED A FEW HUNDRED MILES TO THE N OF THE ISLANDS. GOES-15 IR SHOWS COOLING CONVECTIVE CLOUDS TOPS IN THE PAST COUPLE OR HOURS IN THE VICINITY OF OAHU AND MOLOKAI WITH INCREASING 1 AND 3 HR RAINFALL RATES PER MESONET OBSERVATIONS. A HEAVY RAINBAND HAS DEVELOPED IN THE LAST HR EXTENDING FROM THE EAST SIDE OF OAHU TO THE WEST SIDE OF MOLOKAI PER THE PHMO RADAR. . SHORT TERM OUTLOOK VALID 0745Z-1345Z...MEDIUM-HIGH CONFIDENCE FACTOR IN SHORT TERM OUTLOOK...BOUNDARY SHOULD REMAIN IN PLACE FOR THE NEXT SEVERAL HOURS WITH TRAINING OF ECHOES LIKELY IN SOME AREAS. LATEST MIMIC-TPW2 LOOP INDICATES AN AREA OF HIGHER PWATS UP TO 2" JUST TO THE E THAT WILL OVERSPREAD THE REGION IN THE NEXT FEW HRS, LIKELY ENHANCING PRECIPITATION RATES. . ....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 2250 15841 1874 15295 1877 15625 2247 16166 2247 16164 . NNNN |
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