SPC Day 1 Thunderstorm Outlook Issued 16Z 20030212


ZCZC SPCSWODY1 ALL
ACUS01 KWNS 121602
SPC AC 121601

STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK 
DAY 1 CONVECTIVE OUTLOOK...REF AWIPS GRAPHIC PGWE46 KWNS.

VALID 121630Z - 131200Z

NO SVR TSTM AREAS FCST.

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 25 SE MRY 50 NW NID
35 ESE DAG 25 ESE IPL.

LARGE SURFACE AND UPPER LOW WILL REMAIN OFFSHORE SRN CA THRU THE
FORECAST PERIOD.  RESULT WILL BE CONTINUATION OF A VERY MOIST SLY
FLOW IN THE SWRN U.S.  WITH EXTENSIVE CLOUD COVER AND LAPSES RATES
GENERALLY 6.5C/KM OR LESS INLAND...EXPECT INSTABILITY TO BE TOO
MARGINAL TO SUPPORT ANY MORE THAN ISOLATED LIGHTNING STRIKES E OF
SRN CA MTNS.  W OF MTNS  INSTABILITY A LITTLE HIGHER WITH THE
GREATER LOW LEVEL MOISTURE.  THUS THE OBSERVED LIGHTNING OFFSHORE
WILL OCCASIONALLY DEVELOP INLAND FROM COASTAL MTNS WWD. 
 
..HALES.. 02/12/03

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