SWODY2
SPC AC 260511
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1111 PM CST SUN NOV 25 2007
VALID 271200Z - 281200Z
..NO SVR TSTM AREAS FORECAST...
..SYNOPSIS...
PROGRESSIVE LARGE-SCALE PATTERN WILL CONTINUE THROUGH THE DAY TWO
PERIOD WITH SHORT WAVE TROUGH OVER ONTARIO INTO THE LOWER GREAT
LAKES TRANSLATING NEWD INTO CANADIAN MARITIMES...AND
STRONG...UPSTREAM SYSTEM DIGGING SEWD THROUGH THE INTERMOUNTAIN W.
IN THE LOW LEVELS...COLD FRONT OVER THE CNTRL FL PENINSULA WILL
WEAKEN WITH TIME WHILE SLOWLY SAGGING SWD. MEANWHILE...COLD FRONT
ACROSS THE NRN ROCKIES AND PACIFIC NW WILL PUSH SEWD THROUGH THE
PERIOD...EXTENDING FROM LOW PRESSURE OVER THE UPPER MS VALLEY SWWD
THROUGH CNTRL HIGH PLAINS AND INTO THE GREAT BASIN BY WEDNESDAY
MORNING.
..CNTRL/SRN FL PENINSULA...
AIR MASS AHEAD OF WEAKENING COLD FRONT WILL BE RELATIVELY MOIST WITH
DEWPOINTS IN THE 60S. HOWEVER...FORECAST SOUNDINGS INDICATE THAT
MID-LEVEL LAPSE RATES WILL BE QUITE POOR...EFFECTIVELY LIMITING THE
DEGREE OF CONVECTIVE INSTABILITY. IN FACT...THE MAJORITY OF
CONVECTION DEVELOPING ALONG AND S OF FRONT WILL LIKELY BE SOMEWHAT
SHALLOW DUE TO THE WARM MID-LEVEL TEMPERATURES. A FEW OF THE MORE
INTENSE UPDRAFTS MAY BE ABLE TO PENETRATE THIS WARM LAYER WITH SOME
POTENTIAL FOR ISOLATED TSTM DEVELOPMENT.
ELSEWHERE...A FEW LIGHTNING STRIKES WILL BE POSSIBLE ALONG THE WA
COAST IN ASSOCIATION WITH COLD UPPER TOUGH MOVING INLAND. THIS
POTENTIAL APPEARS TOO MARGINAL TO WARRANT INCLUSION OF AN ADDITIONAL
GENERAL THUNDER AREA.
.MEAD.. 11/26/2007
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