Satellite Precipitation Estimates (TXUS20 KWBC)
Issued by NWS

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TXUS20 KNES 090658
SPENES
ZCZC NFDSPENES ALL
SPENES
HIZ000-
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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 12/09/16 0657Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-683-1404
LATEST DATA USED: GOES-15 0600Z  RUMINSKI
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LOCATION...HAWAII...
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ATTN WFOS...HFO...
ATTN RFCS...AKRFC...
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EVENT...HEAVY RAIN THREAT WITH MODEST SHORT WAVE AND MOISTURE PLUME
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SATELLITE ANALYSIS AND TRENDS...WHILE THE IR STLT PRESENTATION FOR HEAVY
RAIN SIGNATURES HAS DIMINISHED CONSIDERABLY PAST SEVERAL HOURS THERE IS
STILL AN ONGOING THREAT. CLOUD TOPS HAVE NOTABLY WARMER AND COVERAGE HAS
DIMINISHED PAST SEVERAL HOURS...PARTICULARLY OVER AND S OF KAUAI. THIS IS
ALSO REFLECTED IN MICROWAVE RAIN RATE TRENDS WHICH HAD BEEN SHOWING AREAL
AVERAGED RATES AS HIGH AS 1.2"/HR SW OF KAUAI BUT MOST RECENT PASS NEAR
0430Z WAS SHOWING MAX OF .53"/HR WITH LESS COVERAGE AND IT HAS SHIFTED
FURTHER TO THE SW. LIGHTNING DATA IS ALSO CONFINED TO AREAS N OF THE
MIDDLE ISLANDS. THERE IS STILL A JET MAX TO THE N OF THE ISLANDS WITH
STLT DERIVED WINDS AOA 100KT NR 30N155W LEAVING THE ISLANDS BROADLY IN
THE RIGHT ENTRANCE REGION. BUT THIS FEATURE WILL SLOWLY BUT SHIFTING
FURTHER AWAY AS DOES A SHORT WAVE TO ITS N.
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THAT SAID..THERE IS STILL A TPW PLUME WITH MAX VALUES AOA 2" OVER THE
WESTERN/CENTRAL  ISLANDS. LOW LEVEL FLOW AS PER LATEST SFC/SHIP OBS AND
EARLIER ASCAT DATA WERE INDICATING A MORE SOUTHERLY COMPONENT INVOF KAUAI
AND OAHU WITH SOME ENHANCED LOW LEVEL CONVERGENCE. INFLECTION POINT IN
CLOUD SHIELD REFLECTS A WEAK SHORT WAVE JUST TO THE SW OF KAUAI LIFTING TO
THE NE...ALTHOUGH APPROACH OF ADDITIONAL ENERGY WITH SHORT WAVE TO THE NW
MAY SHEAR THIS FEATURE OUT. OBJECTIVE ANALYSIS OF UPPER LEVEL STLT DERIVED
WINDS SHOWS A MODEST AREA OF UPPER DIVERGENCE OVER THE WESTERN ISLANDS.
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SHORT TERM OUTLOOK VALID 0700-1300Z...MEDIUM CONFIDENCE FACTOR IN SHORT
TERM OUTLOOK...GIVEN THE FEATURES/TRENDS NOTED ABOVE FEEL THERE IS STILL
A HEAVY RAIN THREAT OVERNIGHT...WITH THE THREAT SHIFTING A BIT TO THE
EAST INFLUENCED BY SHORT WAVE LIFTING TO THE NE OVER KAUAI AND SEEN
IN LATEST RADAR TRENDS. THREAT WILL MAINLY BE FOR THE CENTRAL ISLANDS
(MAINLY OAHU..MOLOKAI..LANAI AND WESTERN MAUI) ALBEIT REDUCED FROM
EARLIER. THREAT IS FOR LOCALIZED HEAVY RAIN IF A PERSISTENT CONVERGENT
BAND BECOMES ESTABLISHED OR GETS TIED TO AN OROGRAPHIC FEATURE.
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....NESDIS IS A MEMBER OF NWSCHAT (NESDISSATELLITEPRECIP)....
....NESDIS IS A MEMBER OF 12 PLANET....
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FOR QUESTIONS AND COMMENTS CONCERNING THE SATELLITE
PRECIPITATION MESSAGES AND GRAPHICS PLEASE EMAIL
SSDPrecip@noaa.gov
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FOR PRECIP MESSAGES AND GRAPHICS ON THE WEB:
http://www.ospo.noaa.gov/Products/atmosphere/spe/
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FOR AUTOMATED SATELLITE PRECIPITATION ESTIMATES ON THE WEB:
http://www.star.nesdis.noaa.gov/smcd/emb/ff/CONUS.php
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LAT...LON 2289 15997 2136 15637 2013 15661 2153 16051
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