ZCZC NFDSPENES ALL
SPENES
VAZ000-NCZ000-WVZ000-
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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 04/20/08 2228Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-763-8678
LATEST DATA USED: GOES-12: 2215Z		DS
NOAA AMSU: 1818Z  AMSR-E: 1748Z
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LOCATION...VIRGINIA...N CENTRAL/NE NORTH CAROLINA...NE WEST VIRGINIA...
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ATTN WFOS...AKQ...MHX...LWX...RAH...RNK...
ATTN RFCS...MARFC...SERFC...OHRFC...
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EVENT...STORMS TO BECOME MORE ORIENTED FROM SE-NW NEXT 3-6 HRS
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SATELLITE ANALYSIS AND TRENDS...AS MENTIONED IN PREVIOUS SPENES..UPPER
LOW SEEN ON WV IMAGERY HAS BECOME MORE ELONGATED LAST FEW HRS STRETCHING
FROM SW OH TO N CENTRAL NC WITH ITS ACTUAL CENTER STILL OVER THE WV/KY
BORDER. 2 IMPULSES SEEN WITH THE ELONGATED LOW HAVE STARTED TO TURN THE
UPPER/MID LVL CIRCULATION AND SHOULD CONTINUE TO DO SO..WITH THE IMPULSE
OVER SW OH DROPPING SSWWD AND THE IMPULSE OF NC SWEEPING NEWD. THIS HAS
ALLOWED THE 850MB JET WHICH WAS ALIGNED S-N OVER ERN VA EARLIER TO TURN
TO A MORE SERLY FLOW OFF THE ATLANTIC. RECENT MID-ATLANTIC VWPS DEPICT
THIS CHANGE VERY WELL AT DOX/LWX/AND AKQ. RECENT AMSU/AMSR-E PASSES
INDICATED 1.2-1.4" MAX PW VALUES WITHIN THE CNVTN OFF THE NC COAST AND
THIS ATLANTIC MOISTURE..THOUGH NOT VERY RICH BY ANY MEANS..IS STILL ENOUGH
FOR HVY RAINFALL..ESPECIALLY WHEN THE 30-40KT LOW LVL JET IS FACTORED IN.
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CELLS HAVE REMAINED WARM TOPPED..ROTATING NNWWD NOW OVER VA WITH
OCCASIONAL MERGERS OCCURRING SUCH AS THE ONE THAT OCCURRED RECENTLY IN
NE NC ALMOST DUE E OF KRWI. THAT GROUP OF CELLS CONTINUES TO CAUSE A
PROBLEM AS IT APPEARS TO BE ANCHORED OVER NRN PITT/W MARTIN/E EDGECOMBE
COUNTIES AND EXTENDS NNWWD ALONG A LINE OF STRONGER CELLS INTO E CENTRAL
VA..WITH SOME OF THE CELLS EVEN HAVING OVERSHOOTING TOPS. EXPECT THAT WITH
LIFTING MOTION OF MID LVL IMPULSE AND ROTATION OF THE UPPER LOW..WILL
HAVE AN AREA OF MERGING CELLS OVER S CENTRAL VA WITHIN THE NEXT FEW
HRS ASSUMING EVERYTHING HOLDS TOGETHER. HEAVIEST RAIN OVER THE NEXT 6
HRS SHOULD THEN OCCUR FROM NE NC TO SE/S CENTRAL VA INTO CENTRAL VA AND
POSSIBLY EVEN FURTHER NW INTO THE NERN PART OF WV. SEE WEB ADDRESS FOR
GRAPHIC IN ABOUT 10-15 MIN.
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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 3948 7797 3665 7632 3531 7797 3695 8015 3905 7915
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