SWODY3
SPC AC 270631
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0131 AM CDT MON OCT 27 2008
VALID 291200Z - 301200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS AND FORECAST...
INTENSE UPPER LOW INITIALLY CENTERED OVER QUEBEC WILL WEAKEN THROUGH
THE PERIOD AND EVOLVE BACK INTO AN OPEN WAVE WHILE PROGRESSING EWD
INTO FAR ERN CANADA AND THE NERN STATES. MEANWHILE...LOW AMPLITUDE
SHORT WAVE TROUGH OVER THE INTERIOR WEST WILL TRANSLATE EWD INTO THE
CNTRL PLAINS WITHIN AN INCREASINGLY ZONAL LARGE-SCALE FLOW REGIME.
IN THE LOW LEVELS...SURFACE HIGH WILL BUILD EWD FROM THE LOWER MS
VALLEY INTO THE SRN APPALACHIANS WHILE A TROUGH OF LOW PRESSURE
DEVELOPS FROM THE NRN HIGH PLAINS EWD ACROSS THE DAKOTAS.
DESPITE SOME INCREASE IN BOUNDARY LAYER MOISTURE ON BACKSIDE OF
SURFACE HIGH ACROSS SRN AND CNTRL TX...AIR MASS OVER THE CONUS WILL
REMAIN DRY AND STABLE. NO TSTMS ARE FORECAST THROUGH THE PERIOD.
..MEAD.. 10/27/2008
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