SWODY2
SPC AC 051706
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1106 AM CST THU FEB 05 2009
VALID 061200Z - 071200Z
...NO SVR TSTM AREAS FORECAST...
AN UPPER-LEVEL TROUGH OFF THE COAST OF CA WILL MOVE ONSHORE TONIGHT
AS ANOTHER MUCH LARGER UPPER-LEVEL TROUGH CLOSES OFF ALONG THE COAST
OF CNTRL CA FRIDAY. A BAND OF STRONG LARGE-SCALE ASCENT SOUTHEAST OF
THE UPPER-LEVEL LOW ALONG WITH LIFT ASSOCIATED WITH THE LEFT EXIT
REGION OF AN 75 TO 90 KT MID-LEVEL JET WILL RESULT IN THE
POSSIBILITY OF ISOLATED THUNDERSTORMS DURING THE MORNING AND
AFTERNOON. LAPSE RATES ON FORECAST SOUNDINGS IN CNTRL AND SRN CA DO
NOT APPEAR THAT STEEP FRIDAY AFTERNOON SUGGESTING THE THUNDER
POTENTIAL SHOULD REMAIN LOW.
ELSEWHERE ACROSS THE CONUS...AN UPPER-LEVEL RIDGE IS FORECAST FRIDAY
TO MOVE EWD FROM THE CNTRL U.S. INTO THE ERN STATES. AS THE
ASSOCIATED SFC RIDGE SHIFTS EWD FROM THE GULF COAST STATES INTO THE
ATLANTIC...SOME MOISTURE WILL RETURN NWD INTO THE SRN PLAINS.
HOWEVER...IN SPITE OF THE MOISTURE RETURN...LIFT SHOULD REMAIN
INSUFFICIENT FOR THUNDERSTORM ACTIVITY ACROSS THE SRN PLAINS FRIDAY
AND FRIDAY NIGHT.
..BROYLES.. 02/05/2009
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