Friday, January 23, 2009

DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 231547
SWODY1
SPC AC 231544

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0944 AM CST FRI JAN 23 2009

VALID 231630Z - 241200Z

...NO TSTM AREAS FORECAST...

WITH THE PRIMARY UPPER TROUGH REMAINING OFF THE WEST COAST THRU THE
FORECAST PERIOD ONLY WEAK PERTURBATIONS AND MINIMAL COLD AIR
ADVECTION EXPECTED TO AFFECT CA THRU 12Z SAT. CURRENTLY AIR MASS IS
MOIST IN THE SWLY FLOW ACROSS NRN/CENTRAL CA WITH THE COMBINATION OF
UPSLOPE AND LARGE ASCENT FAVORING THE CONTINUATION OF SHOWERY
PRECIPITATION. THERE IS CURRENTLY VERY LITTLE INSTABILITY NOTED ON
THE 12Z SOUNDINGS AT OAK/VBG AND WITH NO SIGNIFICANT CHANGES NOW
EXPECTED...ANY LIGHTNING IN THE STRONGER CONVECTION SHOULD REMAIN
QUITE ISOLATED THRU THE FORECAST PERIOD.

..HALES.. 01/23/2009

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