SWODY1
SPC AC 090039
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0639 PM CST WED DEC 08 2010
VALID 090100Z - 091200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
UPPER AIR PATTERN REMAINS CHARACTERIZED BY MEAN RIDGING OVER NRN
ROCKIES AND 4-CORNERS REGIONS...AND TROUGHING E OF MS RIVER...WITH
ATTENDANT CYCLONIC FLOW COVERING MOST OF CONUS E OF PLAINS STATES.
STG SHORTWAVE TROUGH -- NOW OVER PORTIONS GA/AL TO CENTRAL/SRN GULF
-- IS FCST TO MOVE EWD THROUGH REMAINDER PERIOD...MAINTAINING
POSITIVE TILT AND REACHING CAROLINAS...FL PANHANDLE AND NRN YUCATAN.
WEAK SFC LOW NOW OVER CENTRAL GULF SHOULD DEEPEN SOMEWHAT AND MOVE
EWD. HOWEVER...ATTACHED SFC FRONTAL ZONE SHOULD STAY S OF FL
KEYS...WITH TSTMS OCCURRING OVER GULF WATERS AND/OR WELL E OF
PENINSULA OVER GULF STREAM.
...WRN PAC NW...
BROAD UPPER LOW WILL REMAIN OFFSHORE CANADIAN PAC COAST...WITH
EMBEDDED/LOW-AMPLITUDE SHORTWAVES TRAVERSING STG/ZONAL MID-UPPER JET
LOCATED OVER THIS REGION. ACCOMPANYING COLD AIR ALOFT AND STEEP
LOW-MIDDLE LEVEL LAPSE RATES...ATOP BOUNDARY-LAYER MARINE
MOISTURE...WILL HELP TO MAINTAIN MRGL BUOYANCY SUPPORTING
ISOLATED/EPISODIC THUNDER NEAR COAST. MODIFIED UIL/SLE RAOBS AND
FCST SOUNDINGS SUGGEST MLCAPE BELOW 100 J/KG OVER LAND...LIMITING
TSTM COVERAGE/DURATION.
..EDWARDS.. 12/09/2010
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