SWODY1
SPC AC 040523
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1123 PM CST THU JAN 03 2008
VALID 041200Z - 051200Z
..NO SVR TSTM AREAS FORECAST...
..WRN U.S. COASTAL AREAS...
POTENT VORTICITY MAXIMUM OVER THE NERN PACIFIC WILL MOVE INTO THE
PACIFIC NW COAST EARLY FRIDAY. RECENT OBSERVATIONAL DATA SHOW A GOOD
NUMBER OF LIGHTNING STRIKES WITHIN ZONE OF DPVA AND FORCED ASCENT
ATTENDING THE SHORTWAVE TROUGH AS WELL AS FARTHER WEST NEAR THE COLD
CORE OF THIS FEATURE. MID LEVEL LAPSE RATES WILL STEEPEN FROM NRN CA
INTO THE PACIFIC NW AS THE SHORTWAVE TROUGH APPROACHES.
THUNDERSTORMS WILL LIKELY BE MORE PREVALENT NEAR COASTAL AREAS OF
NRN CA THROUGH ORE AND PARTS OF WA WHERE ONSHORE FLOW WILL MAINTAIN
40S BOUNDARY LAYER DEWPOINTS BELOW STEEPENING LAPSE RATES. THIS WILL
CONTRIBUTE TO DESTABILIZATION WITH MUCAPE GENERALLY AOB 300 J/KG.
MORE ISOLATED LIGHTNING ACTIVITY WILL BE POSSIBLE FARTHER INLAND AS
THE VORT MAX AND STEEPER LAPSE RATES ADVANCE EWD...BUT COVERAGE WILL
PROBABLY REMAIN LESS THAN 10% DUE TO LIMITED INSTABILITY.
.DIAL.. 01/04/2008
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