SWODY1
SPC AC 291231
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0731 AM CDT WED OCT 29 2008
VALID 291300Z - 301200Z
...NO TSTM AREAS FORECAST...
...SYNOPSIS...
A COOL/DRY AIR MASS IN THE LOW LEVELS /IN THE WAKE OF THE DEEP
TROUGH OVER THE NERN STATES/ WILL PRECLUDE DEEP CONVECTION ACROSS
THE ERN HALF OF THE CONUS. THE ONLY POTENTIAL THUNDERSTORM THREAT
AREA WILL BE ACROSS WY TODAY IN ASSOCIATION WITH A SHORTWAVE TROUGH
MOVING EWD FROM ID. STEEP LAPSE RATES AND ASCENT/MID LEVEL
MOISTENING WILL ACCOMPANY THIS TROUGH TODAY...AND WEAK BUOYANCY MAY
DEVELOP BY AFTERNOON WITH SURFACE HEATING /ESPECIALLY OVER THE
HIGHER TERRAIN/. HOWEVER...MOISTURE IS QUITE LIMITED WITH THIS
SYSTEM...AND THUNDERSTORM COVERAGE SHOULD BE TOO SPARSE TO WARRANT
AN OUTLOOK AREA.
OTHERWISE...A LOW-LATITUDE TROUGH INVOF CENTRAL BAJA CA...AND AN
ASSOCIATED PLUME OF LOW-MID LEVEL MOISTURE...SHOULD REMAIN S OF THE
INTERNATIONAL BORDER THROUGH THIS PERIOD.
..THOMPSON/JEWELL.. 10/29/2008
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