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ZCZC NFDSPENES ALL SPENES HIZ000- . SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 08/23/18 1851Z SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-683-1404 LATEST DATA USED: GOES-WEST:1830Z JS . LOCATION...HAWAII... . ATTN WFOS...HFO... ATTN RFCS...APRFC... . EVENT...PERIPHERAL HEAVY RAINFALL EFFECTS FROM LANE CONTINUE TO SPREAD FARTHER TO THE NW WITH THE EMPHASIS CONTINUING ACROSS THE BIG ISLAND. . SATELLITE ANALYSIS AND TRENDS...HURRICANE LANE CONTINUES TO MOVE OFF TO THE NW PER SATELLITE ANIMATION AND INFO FROM CPHC. A RECENT ANIMATION OF AMSU DATA SHOWS THE DEEP MOISTURE IN THE ENVIRONMENT TO THE N AND W OF LANE HAS VIRTUALLY OVERSPREAD THE ENTIRE ISLAND CHAIN WITH THE LEADING EDGE OF THE HIGHEST MOISTURE NOW MOVING OVER KAUAI. AT THE MID/UPPER LEVELS, SOME SOUTHERLY SHEAR IS PRESENT WITH WATER VAPOR INDICATING ELONGATED OUTFLOW TO THE N OF THE SYSTEM WHICH HAS RESULTED IN LAYERED CLOUDINESS ACROSS MUCH OF THE ISLAND CHAIN. A LOOK AT THE VISIBLE/IR SATELLITE IMAGERY REVEALS A PERSISTENT HEAVY RAIN SIGNATURE WITH PERIODIC MORE ENHANCED CONVECTIVE ELEMENTS AFFECTING PRIMARILY THE N AND NE PORTION OF THE BIG ISLAND WHICH CERTAINLY COINCIDES WITH THE HEAVIER RAIN TOTALS IN RECENT OBSERVATIONAL DATA. . SHORT TERM OUTLOOK VALID 1900Z-0100Z...MEDIUM TO HIGH CONFIDENCE FACTOR IN SHORT TERM OUTLOOK...AT THIS POINT, GIVEN THE TRENDS NOTED IN THE MOISTURE FIELDS, LOW LEVEL WIND PATTERN, AND CURRENT MOTION OF LANE, DO NOT SEE MUCH CHANGE FOR THE OUTLOOK PERIOD WITH THE FOCUS FOR THE HEAVIER RAINFALL CONTINUING TO IMPACT THE FAVORABLE TERRAIN ON THE BIG ISLAND. IN ADDITION, EYING A BAND/CONVERGENCE AXIS TO THE SE OF THE BIG ISLAND SPREADING TO THE NW WITH A POSSIBLE EMBEDDED MCV OR VORT TYPE FEATURE ROUGHLY NEAR 16N 151W. IF THIS BAND HOLDS INTACT, ITS EFFECTS COULD IMPACT THE SE PART OF THE BIG ISLAND WITHIN A FEW HOURS. ALSO WATCHING SOME OF THE CONVECTIVE CELLS IN VISIBLE IMAGERY OFF THE N TIP OF THE BIG ISLAND AS THEY PROGRESS OFF TO THE NW AS A POTENTIAL SIGNAL THAT SOME INCREASE IN RAINFALL MAY BEGIN TO AFFECT THE W PART OF MAUI WITHIN THE NEXT COUPLE OF HOURS WITH THE OVERALL LOWER LEVEL FLOW STILL FAVORING THE N AND E FACING TERRAIN. . ....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 2287 16066 2286 15422 1831 15445 1843 16063 . NNNN |
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