SWODY1
SPC AC 290508
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1108 PM CST SAT JAN 28 2012
VALID 291200Z - 301200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
A BROAD UPPER TROUGH CENTERED OVER THE HUDSON BAY WILL ROTATE ENEWD.
AN EMBEDDED SHORT WAVE WILL CROSS THE GREAT LAKES
REGION...INFLUENCING SNOW SHOWERS AND PERHAPS AN ISOLATED LIGHTNING
STRIKE OVER THE OH VALLEY AND PORTIONS OF THE NORTHEAST AS MUCH
COLDER TEMPERATURES ALOFT STEEPEN LOW-MID LEVEL LAPSE RATES BY THE
EVENING. CHARGE SEPARATION/LIGHTNING REMAINS MORE LIKELY OFFSHORE
OVERNIGHT IN ASSOCIATION WITH THE COLD FRONTAL PASSAGE.
FARTHER S...A WEAKLY UNSTABLE ENVIRONMENT WILL PERSIST ACROSS FAR
SRN FL/THE KEYS...WHERE A PLUME OF RELATIVELY GREATER DEEP-LAYER
MOISTURE CONTENT MAY SUPPORT THUNDERSTORM DEVELOPMENT...ESPECIALLY
IN ASSOCIATION WITH PEAK DIURNAL HEATING.
ELSEWHERE...A WEAK UPPER WAVE OVER SRN BAJA CA WILL DRIFT
EWD...GRADUALLY SUPPORTING MOISTENING MID-LEVELS ACROSS SRN TX. A
FEW ELEVATED THUNDERSTORMS MAY DEVELOP OVERNIGHT...BUT SCANT
INSTABILITY WILL ONLY SUPPORT ISOLATED LIGHTNING STRIKES AT BEST.
..HURLBUT/GUYER.. 01/29/2012
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