ACUS03 KWNS 200716
SWODY3
SPC AC 200715
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0115 AM CST THU DEC 20 2012
VALID 221200Z - 231200Z
...NO SVR TSTM AREAS FORECAST...
...NRN CA THROUGH PACIFIC NW...
STEEP LAPSE RATES RESULTING FROM COLD AIR ALOFT WILL PERSIST WITHIN
BROAD CYCLONIC FLOW REGIME SUPPORTING WEAK INSTABILITY. A SERIES OF
EMBEDDED VORTICITY MAXIMA WILL MOVE THROUGH THE SYNOPTIC TROUGH.
SHALLOW CONVECTION WILL REMAIN LIKELY IN THIS ENVIRONMENT...SOME OF
WHICH MAY PRODUCE ISOLATED LIGHTNING STRIKES FROM THE NRN CA INTO
PACIFIC NW COASTAL AREAS.
..DIAL.. 12/20/2012
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