SWODY1
SPC AC 120057
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0757 PM CDT SUN MAR 11 2012
VALID 120100Z - 121200Z
...THERE IS A SLGT RISK OF SVR TSTMS ACROSS THE LOWER MS VALLEY
REGION...
...MID AND LOWER MS VALLEY REGION...
ARCING BAND OF PRECIPITATION EXTENDS IN A COMMA SHAPE FROM NEB EWD
INTO IA...SEWD INTO ERN MO...AND THEN SSWWD TO THE SWRN LA
COAST...AHEAD OF THE NEWD-MOVING UPPER SYSTEM AND ASSOCIATED SURFACE
COLD FRONT.
STRONGEST STORMS ATTM REMAIN ACROSS NERN AND INTO CENTRAL LA...WHERE
COMPLEX/BOWING LINE SEGMENTS ARE INDICATED. ALONG WITH THREAT FOR
LOCALLY DAMAGING WINDS...STRONG/VEERING FLOW WITH HEIGHT IS YIELDING
SHEAR SUPPORTIVE OF LOW-LEVEL ROTATION/ISOLATED TORNADOES. AS THIS
STRONGER AREA OF CONVECTION CROSSES THE MS RIVER OVER THE NEXT FEW
HOURS...A DRIER MS BOUNDARY LAYER SUGGESTS SOME GRADUAL WEAKENING OF
THE STORMS...AND THUS A CORRESPONDING SLOW DECREASE IN SEVERE
POTENTIAL LATER THIS EVENING. MEANWHILE...THOUGH FAVORABLY MOIST
LOW-LEVEL AIRMASS EXTENDS INTO SERN LA...WEAKER FLOW ALOFT AND THE
STRONGER FORCING FOR UVV CONTINUING TO SHIFT NEWD SHOULD LIMIT
POTENTIAL ACROSS THIS PART OF THE AREA OVERNIGHT.
..GOSS.. 03/12/2012
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