SWODY1
SPC AC 120043
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0743 PM CDT SUN OCT 11 2009
VALID 120100Z - 121200Z
...NO SVR TSTM AREAS FORECAST...
A BROAD UPPER-LEVEL TROUGH IN THE ROCKIES WILL DEAMPLIFY AND MOVE
EWD INTO THE CNTRL AND NRN HIGH PLAINS TONIGHT WITH WEST TO
SOUTHWEST FLOW REMAINING IN PLACE ACROSS THE SRN STATES. AT THE
SFC...HIGH PRESSURE IS DOMINATING MOST OF THE CNTRL AND ERN U.S.
THIS SFC HIGH WILL MOVE QUICKLY EWD INTO THE NERN U.S. WITH
LOW-LEVEL FLOW BECOMING SLY IN THE GULF COAST STATES. AS A
RESULT...MOISTURE ADVECTION WILL INCREASE ACROSS THE GULF COAST
STATES WITH ISOLATED TO SCATTERED THUNDERSTORM DEVELOPMENT POSSIBLE
ESPECIALLY ALONG THE TIGHT MOISTURE GRADIENT FROM SE TX EXTENDING
ENEWD ACROSS SRN MS INTO CNTRL AL. FURTHER NORTHWEST...THUNDERSTORMS
SHOULD ALSO PERSIST NEWD INTO SE KS. THIS ACTIVITY IS BEING
SUPPORTED BY A SHORTWAVE TROUGH EVIDENT ON WATER VAPOR IMAGERY IN
THE CNTRL HIGH PLAINS. ELSEWHERE...THUNDERSTORM DEVELOPMENT IS NOT
EXPECTED ACROSS THE CONUS TONIGHT.
..BROYLES.. 10/12/2009
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