SPC AC 201953
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0253 PM CDT THU MAR 20 2008
VALID 202000Z - 211200Z
...NO SVR TSTM AREAS FORECAST...
...NORTHERN ROCKIES TO THE UPPER MIDWEST...
AS A SHORTWAVE TROUGH CROSSES THE NORTHERN ROCKIES AND NORTH CENTRAL
PLAINS THROUGH TONIGHT...RELATIVELY ISOLATED/MARGINAL THUNDERSTORM
COVERAGE IS EXPECTED ACROSS PORTIONS OF THE NORTHERN
ROCKIES/IMMEDIATELY ADJACENT HIGH PLAINS...AND INTO THE UPPER
MIDWEST LATER TONIGHT. THE COMBINATION OF STEEP MID LEVEL LAPSE
RATES/DAYTIME HEATING MAY PROMOTE SOME THUNDERSTORMS ACROSS PORTIONS
OF SOUTHERN MT/NORTHEAST WY INTO THE WESTERN PORTIONS OF SD/NEB
THROUGH EARLY EVENING. LATER TONIGHT...A STRENGTHENING LOW LEVEL JET
AND ASSOCIATED WARM ADVECTION/ELEVATED MOISTURE TRANSPORT REGIME MAY
YIELD SOME ELEVATED THUNDERSTORMS ACROSS NORTHERN IA/FAR SOUTHERN MN
AFTER MIDNIGHT. SEVERE STORMS ARE NOT EXPECTED.
...SOUTHERN FL...
A COLD FRONT CONTINUES TO PROGRESS SOUTHEASTWARD ACROSS THE FAR
SOUTHERN FL PENINSULA PER SURFACE OBSERVATIONS AND VISIBLE
SATELLITE/RADAR IMAGERY. WITH DRYING AT THE SURFACE AND LIMITED
CONVERGENCE/POOR LAPSE RATES ALOFT...THUNDERSTORM POTENTIAL THE
REMAINDER OF THE PERIOD APPEARS MINIMAL ACROSS SOUTH FL.
..GUYER.. 03/20/2008
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0100Z
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