Thursday, December 9, 2010

DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 091252
SWODY1
SPC AC 091250

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0650 AM CST THU DEC 09 2010

VALID 091300Z - 101200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
A MORE ZONAL FLOW REGIME HAS DEVELOPED TEMPORARILY OVER THE CONUS.
WITHIN THIS REGIME...ONE SHORTWAVE TROUGH WILL PROGRESS EWD OVER FL
TODAY...THOUGH ANY RISK FOR THUNDERSTORMS WILL REMAIN OFFSHORE OVER
THE FL STRAITS AND ATLANTIC. SOME RISK FOR ISOLATED THUNDERSTORMS
WILL PERSIST ACROSS THE PAC NW COAST...WHERE STEEP LOW-MIDLEVEL
LAPSE RATES /AOA 7 C PER KM/ ARE PRESENT ON THE CYCLONIC SIDE OF A
90+ KT MIDLEVEL JET. THE MORE PROBABLE TIME FOR A FEW LIGHTNING
STRIKES WILL BE THIS EVENING ALONG THE WA COAST...AS A REGION OF
ASCENT SPREADS INLAND IN ASSOCIATION WITH THE LEFT EXIT REGION OF
MID-UPPER THE JET.

..THOMPSON/ROGERS.. 12/09/2010

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