SWODY1
SPC AC 120039
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0739 PM CDT FRI SEP 11 2009
VALID 120100Z - 121200Z
...NO SVR TSTM AREAS FORECAST...
...CENTRAL PLAINS...
STORMS ALONG WEAK COLD FRONT FROM SWRN MN SWWD INTO NRN KS ARE
EXPECTED TO GRADUALLY WEAKEN AS THEY SHIFT SEWD DUE TO COMBINATION
OF COOLING/STABILIZING BOUNDARY LAYER AND STORMS SHIFTING AWAY FROM
STRONGER DEEP LAYER SHEAR.
...SOUTHERN PLAINS AND GULF COASTAL REGION...
BROAD CYCLONIC CIRCULATION OVER TX WILL RESULT IN WIDESPREAD
CONVECTION OVERNIGHT. WEAK SHEAR/SLOW MOVING STORMS AND EXTREMELY
MOIST ENVIRONMENT...PW VALUES AOA 2.0 INCHES...WILL BE MOST
FAVORABLE FOR HEAVY RAINFALL.
...SRN NEW ENGLAND...
VERTICALLY STACKED LOW PRESSURE OVER NJ AREA WILL MAINTAIN WARM
ADVECTION REGIME OVERNIGHT TO THE NORTH OF THE LOW ACROSS SRN NEW
ENGLAND. DESPITE MOIST ADIABATIC LAPSE RATES...BOS/ALY EVENING
SOUNDINGS SHOW WEAK ELEVATED INSTABILITY...MUCAPES FROM 100-200
J/KG...WHICH WILL SUPPORT CONVECTION AND A FEW LIGHTNING STRIKES.
..IMY.. 09/12/2009
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