SPC AC 231618
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1018 AM CST MON FEB 23 2009
VALID 231630Z - 241200Z
...NO TSTM AREAS FORECAST...
...SYNOPSIS...
A STRONG CLOSED LOW NEAR 43 N AND 135 W WILL MOVE EWD/ENEWD TO THE
WA/ORE COASTS OVERNIGHT...AND THIS LOW WILL BE PRECEDED BY A
BAROCLINIC BAND EARLY THIS AFTERNOON. OCEANIC LIGHTNING DATA AND
SATELLITE IMAGERY SUGGEST THAT THE MOST RECENT THUNDERSTORMS WITHIN
THE BAROCLINIC BAND WERE NEAR 09Z. ADDITIONAL THUNDERSTORMS ARE NOT
PROBABLE SINCE THE SYSTEM IS APPARENTLY AT PEAK INTENSITY
ALREADY...AND DESTABILIZATION APPEARS UNLIKELY AS THE MID LEVEL LOW
MOVES OVER THE SLIGHTLY COOLER SST/S CLOSER TO THE PAC COAST. ANY
LIGHTNING STRIKES ALONG THE ORE/SW WA COASTS WILL BE VERY ISOLATED
AND NOT SUFFICIENT TO WARRANT INTRODUCING AN OUTLOOK AREA.
ELSEWHERE...A CONTINENTAL POLAR AIR MASS WILL PRECLUDE ANY
APPRECIABLE THUNDERSTORM THREAT E OF THE ROCKIES.
..THOMPSON.. 02/23/2009
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 2000Z
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