SWODY2
SPC AC 010521
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1221 AM CDT TUE NOV 01 2011
VALID 021200Z - 031200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
A POTENT UPPER TROUGH WILL MOVE QUICKLY EWD FROM THE ROCKIES ACROSS
THE CNTRL PLAINS DURING THE DAY AND INTO MID MS AND OH VALLEYS BY
THU MORNING. AT THE SURFACE...A WEAK AREA OF LOW PRESSURE WILL MOVE
FROM WRN OK TOWARDS ST. LOUIS BY 00Z...FURTHER DEEPENING OVERNIGHT
OVER IL/IND. MEANWHILE...A STRONG COLD FRONT WILL BRING COOL AIR SWD
ACROSS KS/OK/TX...WITH A 1035 MB HIGH SETTLING INTO THE CNTRL AND
SRN PLAINS OVERNIGHT.
TO THE W...ANOTHER STRONG UPPER TROUGH WILL AFFECT THE PACIFIC NW
WITH RAPID COOLING ALOFT OVERSPREADING THE REGION WITH A COLD FRONT
COMING ASHORE BY AROUND 00Z. HERE...POST FRONTAL SHOWERS AND SHALLOW
THUNDERSTORMS WILL MAINLY BE OFFSHORE BUT MAY AFFECT COASTAL AREAS
OVERNIGHT.
...SERN NEB...ERN KS...WRN MO...NERN OK...
SHOWERS AND ISOLATED THUNDERSTORMS ARE EXPECTED TO BE ONGOING OVER
ERN NEB AND KS EARLY WED...FORCED BY WEAK WARM ADVECTION AND FORCING
ALONG AND BEHIND THE SURFACE COLD FRONT. FORECAST SOUNDINGS INDICATE
THAT THIS ACTIVITY WILL BE HIGHLY ELEVATED WITH UNSTABLE PARCELS
ORIGINATING WELL ABOVE 850 MB. RESULTANT WEAK INSTABILITY SHOULD
PRECLUDE ANY SEVERE HAIL THREAT...ALTHOUGH SOME VERY SMALL HAIL MAY
OCCUR GIVEN COLD TEMPERATURE PROFILES SFC AND ALOFT...AS WELL AS
FAVORABLE DEEP SHEAR FOR A FEW CONSOLIDATED UPDRAFTS.
..JEWELL.. 11/01/2011
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