SWODY1
SPC AC 191222
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0722 AM CDT FRI MAR 19 2010
VALID 191300Z - 201200Z
...NO SVR TSTM AREAS FORECAST...
...TX/OK...
A DEEP UPPER LOW/TROUGH IS SETTLING SOUTHEASTWARD ACROSS
CA/NV...WHILE A STRONG COLD FRONT DRIVES SOUTHWARD ACROSS THE
CENTRAL HIGH PLAINS THIS MORNING. INCREASING SOUTHERLY LOW LEVEL
WINDS AHEAD OF THE UPPER TROUGH WILL TRANSPORT ONLY MARGINALLY MOIST
AND UNSTABLE AIR NORTHWARD AHEAD OF THE FRONT...WITH ONLY LOW/MID
50S DEWPOINTS EXPECTED BY THIS EVENING OVER TX/OK.
NEVERTHELESS...RATHER STEEP LOW LEVEL LAPSE RATES AND COOL
TEMPERATURES ALOFT WILL PROVIDE THE INSTABILITY FOR A BAND OF LATE
AFTERNOON AND EVENING THUNDERSTORMS ALONG THE FRONT FROM CENTRAL OK
INTO WEST-CENTRAL TX. MODEL FORECAST SOUNDINGS IN THIS REGION
SUGGEST SUFFICIENT CAPE FOR THE RISK OF HAIL IN STRONGER
STORMS...MAINLY DURING THE FIRST 2-3 HOURS AFTER INITIATION. BEYOND
THAT TIME...STORMS WILL LIKELY MERGE INTO A PREDOMINANTLY NON-SEVERE
SQUALL LINE WHICH WILL SPREAD INTO NORTHERN AND CENTRAL PARTS OF TX.
..HART/HURLBUT.. 03/19/2010
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