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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 12/07/07 0730Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-763-8678
LATEST DATA USED: GOES-11 0700Z NOAA AMSU:0339Z  SSMI:0352-0423Z  JS
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LOCATION...HAWAII...
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ATTN WFOS...HFO...
ATTN RFCS...APRFC...
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EVENT...IMPULSES ROTATING AROUND VERY SLOW MOVING UPPER LOW CONTINUE TO
ENHANCE SHOWER ACTIVITY OVER SOME OF THE HAWAIIAN ISLANDS.
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SATELLITE ANALYSIS AND TRENDS...LATEST MICROWAVE PASSES FROM SSMI/AMSU
FROM A FEW HOURS AGO SHOW THE PRIMARY BAROCLINIC MOISTURE BAND HAS PUSHED
ACROSS THE FAR EASTERN PORTION TO JUST OFFSHORE OF THE BIG ISLAND. GOES
IR IMAGERY SEEMS TO BE IN AGREEMENT WITH THIS AS MOST ENHANCED ACTIVITY
HAS FORMED JUST OFF THE COAST OF THE BIG ISLAND ALTHOUGH IR IMAGERY DOES
SHOW SOME SCATTERED SHOWERS NOW FORMING TO THE SOUTH AND EVEN SOUTHWEST
OF THE ISLAND. FARTHER TO THE WEST A BIT OF A BROKEN LINE OF WARM TOP
CONVECTION HAS TAKEN SHAPE CURRENTLY AIMED AT THE WESTERN PORTION OF
MAUI. VERY LITTLE MOVEMENT HAS BEEN NOTED RECENTLY WITH THIS THIN LINE
WHICH COULD LEAD TO INDIVIDUAL CELLS OCCASIONALLY TRAINING FROM SSW TO
NNE DURING THE NEXT HOUR OR TWO.
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FINALLY, THE MOST SIGNIFICANT SATELLITE ENHANCEMENT HAS BEEN AFFECTING
THE WESTERN HAWAIIAN ISLANDS WITH RECENT TRENDS SHOWING AREA OF COOLER
CLOUD TOPS ACTUALLY EXPANDING SLIGHTLY AS INDIVIDUAL CELLS MOVE FROM NW
TO SE INTO KAUAI. THE TRENDS ALSO POINT TO THIS SITUATION CONTINUING FOR
AT LEAST THE NEXT SEVERAL HOURS AS THERE IS NO INDICATION FROM SATELLITE
LOOPS THAT THIS AXIS IS MOVING MUCH IF AT ALL. THIS DEVELOPING AREA
REFLECTS RATHER IMPRESSIVELY IN LATEST SSMI AND AMSU RAIN DATA DESPITE
THE FACT THAT MOST OF THE INDIVIDUAL CONVECTIVE ELEMENTS LIKELY FALL
BELOW THE RESOLUTION OF THE SENSOR. EVEN SO, THE MICROWAVE RAIN RATE
DATA FROM A FEW HOURS AGO INDICATED A NUMBER OF PIXELS OF WELL OVER
.5"/HR EMBEDDED WITHIN THIS BAND WHICH CERTAINLY INFERS ACTUAL RAIN
RATES HIGHER THAN THAT GIVEN THAT IT'S AN AREAL AVERAGE. INTERESTINGLY,
MICROWAVE DATA ALSO APPEARS TO SHOW SOME INCREASE IN PRECIPITABLE WATER
VALUES ACROSS AND TO THE NW OF KAUAI AS SOME OF THE HIGHER MOISTURE HAS
WRAPPED ALL THE WAY AROUND TO THE WEST AND SOUTHWEST OF THE MAIN THE
UPPER LOW. MAX PW VALUES WITHIN THIS BAND MAY BE APPROACHING 1.75". WATER
VAPOR IMAGERY CONFIRMS THAT THE UPPER LOW AFFECTING THE HAWAIIAN ISLANDS
IS FOR THE TIME BEING VIRTUALLY CUTOFF FROM THE MAIN STEERING CURRENTS
IN THE ATMOSPHERE WITH WELL DEFINED DEFORMATION ZONE IN PLACE BETWEEN
160-165W AND BETWEEN 25-35N.
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SEE NCEP HPC DISCUSSION AND QPF/S FOR FORECAST.
....NESDIS IS A MEMBER OF 12 PLANET....
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SSD/SAB WEB ADDRESS FOR PRECIP ESTIMATES:
HTTP://WWW.SSD.NOAA.GOV/PS/PCPN/
...ALL LOWER CASE EXCEPT /PS/PCPN/
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LAT...LON 2138 15618 2039 15382 1784 15489 1762 15549 1825 15709
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