ACUS01 KWNS 131622
SWODY1
SPC AC 131620
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1120 AM CDT THU SEP 13 2012
VALID 131630Z - 141200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
NUMEROUS THUNDERSTORMS ARE EXPECTED WITHIN A NE/SW-ORIENTED FRONTAL
ZONE OVER CNTRL/SRN TX...WHERE 1.6-1.9-INCH PW WILL CONTRIBUTE TO A
GUSTY-WIND THREAT WITH THE STRONGEST STORMS. WEAK MID-LEVEL LAPSE
RATES...SPATIAL DISPLACEMENT FROM ANY SUBSTANTIAL DEEP SHEAR...AND
THE UNDERCUTTING NATURE OF THE SFC BOUNDARY PRECLUDE 5-PERCENT SVR
WIND PROBABILITIES. ELSEWHERE...RELATIVELY SPARSE THUNDERSTORM
ACTIVITY WILL BE POSSIBLE /1/ NEAR THE AFOREMENTIONED SFC FRONT THAT
EXTENDS NEWD INTO THE MIDWEST AND AHEAD OF THIS FRONT ACROSS PARTS
OF THE SE STATES WITHIN THE RELATIVELY HIGH PW PLUME THROUGH
TONIGHT.../2/ AROUND RESIDUAL LOW-LEVEL MOISTURE OVER THE SW...AND
/3/ IN ASSOCIATION WITH A COMPACT VORT MAX CROSSING LAKE SUPERIOR
OVERNIGHT TONIGHT.
..COHEN/THOMPSON.. 09/13/2012
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