Thursday, November 8, 2007

DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 081904
SWODY1
SPC AC 081901

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0101 PM CST THU NOV 08 2007

VALID 082000Z - 091200Z

..NO TSTM AREAS FORECAST...

..PACIFIC NORTHWEST...
DOWNSTREAM OF A VERY STRONG...ZONAL PACIFIC JET STREAK...A
SIGNIFICANT SHORT WAVE TROUGH AND ATTENDANT SURFACE CYCLONE CONTINUE
TO LIFT TOWARD BRITISH COLUMBIA/PACIFIC NORTHWEST COASTAL AREAS.
THE SYSTEM IS PROGGED TO MIGRATE INLAND LATE TONIGHT INTO EARLY
FRIDAY...WHEN STRENGTHENING LOW-LEVEL FLOW WITH AN INCREASING
ONSHORE COMPONENT IS EXPECTED ACROSS THE WESTERN SLOPES OF THE
CASCADES. WEAK FRONTAL ZONE/ASSOCIATED MID-LEVEL THERMAL TROUGH MAY
BE ACCOMPANIED BY A CONVECTIVE PRECIPITATION BAND ACROSS THIS REGION
DURING THE 09/06-12Z TIME FRAME. BUT...FORECAST SOUNDINGS CONTINUE
TO INDICATE THAT POTENTIAL FOR CHARGE SEPARATION/CLOUD
ELECTRIFICATION IS LOW. AND...THE RISK FOR THUNDERSTORMS APPEARS
NEGLIGIBLE.

.KERR.. 11/08/2007

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