SWODY2
SPC AC 280520
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1120 PM CST FRI NOV 27 2009
VALID 291200Z - 301200Z
...NO SVR TSTM AREAS FORECAST...
THE STRONG UPPER TROUGH CURRENTLY DIGGING INTO THE WESTERN STATES IS
FORECAST TO BECOME CLOSED OVER FAR SOUTHERN CA BY 12Z SUNDAY
MORNING...AND THEN TRACK GENERALLY EASTWARD ACROSS NORTHERN MEXICO
BY THE END OF THE DAY2 PERIOD. A RELATIVELY LONG PERIOD OF
SOUTHERLY LOW LEVEL TRAJECTORIES WILL HELP TRANSPORT GULF MOISTURE
NORTHWARD INTO PARTS OF TX AND THE LOWER MS VALLEY. DEWPOINTS IN
THE 60S ARE LIKELY TO BE COMMON ACROSS THE AREA BY SUNDAY
AFTERNOON...WHILE RICH TROPICAL AIR MASS REMAINS OFFSHORE.
SCATTERED THUNDERSTORMS MAY BE ONGOING SUNDAY MORNING OVER PARTS OF
NM/AZ NEAR THE UPPER LOW. THIS ACTIVITY WILL SPREAD EASTWARD INTO
SOUTHWEST TX BY EVENING...AND INTO CENTRAL TX OVERNIGHT. FARTHER
EAST...THUNDERSTORMS WILL BECOME NUMEROUS OVER CENTRAL/EAST TX
SUNDAY AFTERNOON IN VICINITY OF THE SURFACE COLD FRONT. VERTICAL
SHEAR PROFILES ARE NOT FORECAST TO BE VERY STRONG...AND WEAK
THERMODYNAMIC PROFILES SUGGEST THAT UPDRAFTS WILL NOT BE
PARTICULARLY ROBUST. LOW SEVERE WIND PROBABILITIES MAY EVENTUALLY
BE NEEDED OVER PARTS OF TX/LA...BUT WILL NOT INTRODUCE THEM YET DUE
TO LOW CONFIDENCE.
..HART.. 11/28/2009
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