SWODY1
SPC AC 210050
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0650 PM CST FRI NOV 20 2009
VALID 210100Z - 211200Z
...NO SVR TSTM AREAS FORECAST...
...WRN GULF OF MEXICO/SOUTH TX...
WLY FLOW IS DEEPENING ACROSS SOUTH TX THIS EVENING AS COLD FRONT
PROGRESSES INTO THE WRN GULF OF MEXICO. RADAR DATA CONFIRMS THIS
WITH STRONGEST CONVECTION NOW OFFSHORE AND MIGRATING INTO HIGHER
INSTABILITY. GIVEN THIS EVOLUTION IT APPEARS SEVERE THREAT IS
NEGLIGIBLE THE REST OF THE PERIOD.
...PACIFIC NW COAST...
00Z SOUNDINGS FROM UIL/SLE/MFR EXHIBIT VERY STEEP LAPSE RATES IN THE
LOWEST 4KM WITH SUFFICIENT MOISTURE/BUOYANCY FOR LOW-TOPPED
CONVECTION. ISOLATED THUNDERSTORMS ARE CURRENTLY ONGOING ACROSS SRN
VANCOUVER ISLAND AND THIS ACTIVITY MAY PROPAGATE INTO PORTIONS OF
NWRN WA SHORTLY. OTHERWISE...ISOLATED LIGHTNING MAY ACCOMPANY
DEEPER UPDRAFTS SWD ALONG ORE COAST THIS EVENING.
..DARROW.. 11/21/2009
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