ZCZC NFDSPENES ALL
SPENES
IDZ000-WAZ000-
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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 03/28/08 1946Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-763-8678
LATEST DATA USED: G11  1930Z  CK
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LOCATION...WASHINGTON...IDAHO...NE OREGON
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ATTN WFOS...OTX...PDT...SEW...
ATTN RFCS...NWRFC...
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EVENT...COMMA HEAD OVER WA INCRG..MOD/HVY SNOW
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SATELLITE ANALYSIS AND TRENDS...OVER THE PAST FEW HRS..GOES IMAGERY HAS
SHOWN STEADY EVOLUTION OF CLASSIC COMMA HEAD CONFIGURATION ENCOMPASSING
MUCH OF WRN/NRN WA. OVERALL COMMA CLOUD AREA EXTENDS EWD AND SEWD INTO ID
AND OR. IN ADDITION TO COOLING/EXPANDING COMMA HEAD IN IR IMAGERY.. VIS
IMAGERY SHOWS INCRG TEXTURE OVER THE WA/N OR CASCADES AS WELL AS N WA.
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THE MAIN PLAYER IN THIS IS THE INCRG CIRC OFF NW WA COAST AND THE
AMPLIFYING ATTENDANT SHORT WAVE EXTENDING SWD FM THERE ALONG THE OR
COAST. UPPR DIFFLUENCE PER GOES WV IMAGERY ANIMATION IS COINCIDENT WITH
COMMA HEAD..AND THE UPWARD MOTION PROVIDED BY THIS AS WELL AS APPROACHING
UPPR LOW/SHORT WAVE SHOULD RESULT IN CONTINUED EXPANSION OF COMMA HEAD
AND MOD/HVY SNOW DURING THE AFTN.
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A SECOND AREA OF COOLING CLOUD TOPS ENCOMPASSES SE WA/NE QUARTER OF OR
INTO ID. THIS IS PART OF GENERAL COMMA CLOUD..BUT IS BEING FUELED IN
PARTICULAR BY STRONG UPPR LVL JET STREAK. GOES STLT WIND ANALYSIS SHOWS
FAVORED LEFT EXIT REGION OVER NE OR. THUS FAR..MOST OF THE OBS OVER NE
OR ARE INDICATING MAINLY LT SNOW. BUT GIVEN THE CURRENT JET DYNAMICS
AND THE EWD PROGRESSION OF THE SHORT WAVE ALONG THE OR COAST..WOULD
EXPECT INTENSITIES TO EVENTUALLY INCR AND AFFECT PARTS OF ID LATER ON.
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A GRAPHIC FOR THIS SPENES MESSAGE WILL BE AVAILABLE AT WEB ADDRESS BELOW
IN APPX 10 MINUTES.
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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 5028 12605 4960 11640 4628 11679 4702 12482
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