SWODY3
SPC AC 180802
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0202 AM CST SUN NOV 18 2007
VALID 201200Z - 211200Z
..NO SVR TSTM AREAS FORECAST...
..SYNOPSIS...
UPPER TROUGH IS FORECAST TO DIG/EXPAND SLOWLY SEWD ACROSS THE
ROCKIES THIS PERIOD...WITH CYCLONIC FLOW EXPECTED TO RESIDE ACROSS A
LARGE PORTION OF THE CONUS BY THE END OF THE PERIOD.
AT THE SURFACE...COLD FRONT IS FORECAST TO PROGRESS SEWD ACROSS THE
PLAINS/INTO THE MIDWEST...AS UPPER HEIGHTS FALL AHEAD OF THE
APPROACHING WRN TROUGH.
AIRMASS AHEAD OF THE ADVANCING FRONT WILL SLOWLY MOISTEN...BUT ATTM
IT APPEARS THAT DEGREE OF MOISTENING WILL BE INSUFFICIENT FOR
APPRECIABLE PRE-FRONTAL DESTABILIZATION. FURTHER...A CAP ATOP THE
BOUNDARY LAYER IS FORECAST TO REMAIN IN PLACE -- PARTICULARLY ACROSS
THE SRN PLAINS WHERE SOMEWHAT GREATER BOUNDARY-LAYER MOISTURE IS
FORECAST. GIVEN THIS -- IT APPEARS ATTM THAT SEVERE THREAT SHOULD
REMAIN NEGLIGIBLE TO NON-EXISTENT THROUGH THE END OF THE PERIOD.
.GOSS.. 11/18/2007
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