Friday, May 18, 2012

DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 180826
SWOD48
SPC AC 180826

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0326 AM CDT FRI MAY 18 2012

VALID 211200Z - 261200Z

...DISCUSSION...
LARGE SCALE FLOW REGIME WILL REMAIN DECIDEDLY HOSTILE FOR ORGANIZED
SEVERE THUNDERSTORMS ACROSS MUCH OF THE CONUS EARLY NEXT WEEK AS
LINGERING ERN U.S. TROUGH LIMITS MOISTURE/INSTABILITY FROM RETURNING
INLAND. BY MID WEEK THE GFS IS MORE PROGRESSIVE WITH EJECTING SHORT
WAVES INTO THE PLAINS THAN THE ECMWF WHICH COULD OTHERWISE SUPPORT
SEVERE DEVELOPMENT. HOWEVER...CONFIDENCE IS LOW REGARDING THE
EVOLVING PATTERN LATE IN THE PERIOD.

..DARROW.. 05/18/2012

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