Friday, September 2, 2011

DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 020853
SWOD48
SPC AC 020853

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0353 AM CDT FRI SEP 02 2011

VALID 051200Z - 101200Z

MEDIUM RANGE MODEL FORECASTS START OUT THE DAY 4 TO 8 PERIOD WITH AN
UPPER-LEVEL TROUGH IN THE OH AND MS VALLEYS AND AN UPPER-LEVEL RIDGE
OVER THE ROCKIES. THE UPPER-LEVEL TROUGH AND ASSOCIATED UPPER-LEVEL
LOW IS FORECAST TO MOVE VERY SLOWLY EWD ACROSS THE GULF COAST STATES
IN THE EARLY TO MID-WEEK TIMEFRAME. AHEAD OF THE SYSTEM...STRONG
LOW-LEVEL FLOW AND ABUNDANT MOISTURE IS FORECAST IN THE ERN GULF
COAST STATES AND SC WHERE STRONG THUNDERSTORM DEVELOPMENT WILL BE
POSSIBLE EACH DAY FROM MONDAY/DAY 4 TO THURSDAY/DAY 7. IN SPITE OF
THE POSSIBILITY OF AN ISOLATED SEVERE THREAT EACH AFTERNOON AND
EVENING...PREDICTABILITY CONCERNING AN ENHANCED SEVERE THREAT
REMAINS LOW.

..BROYLES.. 09/02/2011

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