SWODY3
SPC AC 210819
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0219 AM CST THU FEB 21 2008
VALID 231200Z - 241200Z
..NO SVR TSTM AREAS FORECAST...
..SYNOPSIS...
PROGRESSIVE PATTERN WILL CONTINUE INTO DAY 3. THE SHORTWAVE TROUGH
THAT WILL AFFECT THE ERN U.S. DAY 2 WILL CONTINUE TO DEAMPLIFY AND
MOVE OFFSHORE SATURDAY AFTERNOON. ATTENDANT COLD FRONT WILL ADVANCE
SEWD THROUGH THE FL PENINSULA. AN UPSTREAM SHORTWAVE TROUGH WILL
MOVE INTO THE PLAINS AND LOWER MS VALLEY...BUT OFFSHORE FLOW OVER
THE GULF WILL PRECLUDE ANY SEVERE WEATHER WITH THIS SYSTEM.
..FL...
SHOWERS AND ISOLATED THUNDERSTORMS MAY OCCUR OVER THE NRN AND CNTRL
FL PENINSULA ALONG AND IN ADVANCE OF THE COLD FRONT AND ALONG SEA
BREEZE BOUNDARIES. MODERATELY STRONG UNIDIRECTIONAL DEEP SHEAR WILL
PERSIST IN ADVANCE OF THE FRONT. HOWEVER...POTENTIAL FOR LARGE SCALE
SUBSIDENCE IN WAKE OF ERN U.S. SHORTWAVE TROUGH WILL PROBABLY SERVE
TO WEAKEN MID LEVEL LAPSE RATES AND CONTRIBUTE TO UNFAVORABLE
THERMODYNAMIC CONDITIONS FOR SEVERE STORMS.
.DIAL.. 02/21/2008
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