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NYZ000-
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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 02/20/08 1929Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-763-8678
LATEST DATA USED: GOES-12: 1915Z		DS
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LOCATION...NEW YORK...
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ATTN WFOS...BGM...BUF...
ATTN RFCS...NERFC...
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EVENT...CONTINUING SINGLE LK EFFECT SNOW BAND
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SATELLITE ANALYSIS AND TRENDS...INTENSE LES PLUME ACROSS LK ONTARIO IS
FINALLY STARTING TO SHOW SIGNS OF WEAKENING AS THE NWRLY SFC FLOW OFF
GEORGIAN BAY HAS PUSHED THE WRN HALF OF THE BAND INTO THE SWRN SHORE OF
THE LK OVER THE PAST HR. IN RESPONSE TO THIS..A SMALL WAVE HAS FORMED
ALONG THE BAND THAT IS PROPAGATING EWD ACROSS THE LK..CURRENTLY DUE N
OF WAYNE COUNTY PER 1915Z VIS IMAGE. CLOUD TOP TEMPS HAVE ALSO SHOWN A
GENERAL WARMING TREND FOR THE PAST 2-3 HRS..ESPECIALLY OVER THE WRN HALF
WHERE JUST RECENTLY THE BAND WAS DRIVEN ASHORE. COLDEST CLOUD TOP TEMPS
ARE NOW AT -25C OVER THE FAR ERN PART OF THE LK. CHANGES IN CONDITIONS
OVER THE LK APPEAR TO BE IN RESPONSE TO THE APPROACHING S/WV TROF AND
THE CLIPPER SYSTEM THAT IS PASSING OVER THE MID-ATLANTIC REGION MAKING
THE FLOW ACROSS THE LK LESS CONDUCIVE FOR A SINGLE LES PLUME.
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THOUGH ERN HALF OF BAND HAS SUSTAINED ITS STRUCTURE AND INTENSITY THUS
FAR AND STAYED RELATIVELY STNRY OVER NRN OSWEGO COUNTY..THIS SHOULD
CHANGE IN THE NEAR FUTURE. WAVE ALONG BAND SHOULD ALLOW FOR THE BAND TO
BRIEFLY LIFT NWD JUST A BIT AS HAS BEEN OBSERVED IN VIS IMAGERY TO THE
W WITHIN THE BAND..PROB TO ALONG THE OSWEGO/JEFFERSON COUNTY LINE. REST
OF THE BAND BEHIND THIS WAVE CAN BE SEEN DROPPING SWD AFTER IT PASSES
AND SO THOUGH THE PLUME MAY SURVIVE IT WILL DROP EVEN FURTHER SEWD INTO
THE LK WITH A SHORTER FETCH. LIKELY WILL SEE AN END TO THE 2-3"/HR SNOW
RATES ONCE THE WAVE GOES THROUGH THE ENTIRE PLUME BUT A QUICK BURST OF
VERY HVY SNOWFALL MAY OCCUR AS THE WAVE COMES ASHORE ON THE ERN SHORE
OF LK ONTARIO. SEE WEB ADDRESS IN ABOUT 10 MIN FOR GRAPHIC.
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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 4423 7866 4394 7562 4335 7553 4340 7877
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