SWODY3
SPC AC 300825
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0225 AM CST WED DEC 30 2009
VALID 011200Z - 021200Z
...SYNOPSIS...
NEW YEARS DAY WILL LIKELY SEE A SHORTWAVE TROUGH...EMBEDDED WITHIN
THE SOUTHERN PORTION/BASE OF AN EASTERN STATES LONGWAVE
TROUGH...CONTINUE TO RACE EAST-NORTHEASTWARD OVER THE SOUTHEAST
STATES TO THE WESTERN ATLANTIC...WHILE RELATIVELY LOW AMPLITUDE
WEST-NORTHWESTERLY FLOW ALOFT PREVAILS OVER THE WESTERN HALF OF THE
CONUS. IT SEEMS PROBABLE THAT SHOWERS/TSTMS WILL BE ONGOING FRIDAY
MORNING ALONG/JUST AHEAD OF AN ADVANCING COLD FRONT ACROSS FL.
ONGOING CLOUD COVER/PRECIPITATION...WITH WEAK PRE-FRONTAL BUOYANCY
INLAND AND A MARGINAL SOURCE REGION AIRMASS...ALONG WITH THE EARLY
DAY TIMING OF THE COLD FRONT...IMPLY A VERY LOW RISK FOR SEVERE
STORMS ACROSS THE SOUTHERN HALF OF FL. ELSEWHERE...PREVALENCE OF
COLD/STABLE CONDITIONS WILL LIMIT TSTM POTENTIAL AS THE COLD FRONT
SWEEPS ACROSS THE REMAINDER OF THE GULF AND ARCTIC HIGH PRESSURE
BEGINS TO DEVELOP SOUTHWARD ACROSS THE NORTH CENTRAL STATES.
..GUYER.. 12/30/2009
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