DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 210728
SWODY3
SPC AC 210726

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0126 AM CST FRI DEC 21 2012

VALID 231200Z - 241200Z

...NO SVR TSTM AREAS FORECAST...

A SOMEWHAT ZONAL FLOW PATTERN IS FORECAST TO BE IN PLACE ACROSS MOST
OF THE CONUS ON SUNDAY AS SEVERAL LOW AMPLITUDE SHORTWAVE TROUGHS
MOVE EWD ACROSS THE WRN AND CNTRL STATES. MODEL FORECASTS MOVE A
SHORTWAVE TROUGH ACROSS THE ROCKIES SUNDAY AFTERNOON AS MOISTURE
RETURNS NWD INTO THE ARKLATEX. IN SPITE OF THIS...LARGE-SCALE ASCENT
IS FORECAST TO REMAIN WEAK ALONG THE CORRIDOR OF LOW-LEVEL MOISTURE
UNTIL LATE SUNDAY NIGHT WHEN ISOLATED THUNDERSTORMS WILL BE POSSIBLE
IN THE MID MS VALLEY. LIGHTNING STRIKES WILL ALSO BE POSSIBLE ALONG
THE WEST COAST FROM SUNDAY AFTERNOON THROUGH SUNDAY NIGHT AS A
SHORTWAVE TROUGH MOVES ASHORE. ELSEWHERE ACROSS THE
CONUS...THUNDERSTORMS ARE NOT EXPECTED SUNDAY OR SUNDAY NIGHT.

..BROYLES.. 12/21/2012

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