[SWODY1] SWODY1

[Severe Weather Outlook Day 1]

ACUS01 KWNS 231234
SWODY1
SPC AC 231232

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
0632 AM CST THU NOV 23 2006

VALID 231300Z - 241200Z

...NO SVR TSTM AREAS FORECAST...

...MID ATLANTIC COAST INTO COASTAL NEW ENGLAND...
EJECTING LOW PRESSURE SYSTEM WILL CONTINUE TO LIFT NWD ALONG THE
EAST COAST TODAY WITH FEED OF WEAK INSTABILITY AND STEEPENING MID
LEVEL LAPSE RATES MAINTAINING A FEW THUNDERSTORMS OVER COASTAL
WATERS.  12Z SOUNDINGS AT WAL AND OKX BOTH INDICATE SLIVER OF CAPE
BETWEEN ROUGHLY H8 AND H5.  THOUGH INFLUX OF MOISTURE WILL SUSTAIN
MODERATE TO HEAVY MOIST CONVECTION INTO THE MID ATLANTIC AND SRN NEW
ENGLAND AHEAD OF THIS SYSTEM...APPEARS THUNDERSTORM POTENTIAL WILL
BE QUITE WEAK AWAY FROM THE COAST.

...PACIFIC NORTHWEST...
ONSHORE LOW-LEVEL FLOW WILL BECOME MODERATE TO STRONG BY LATE
AFTERNOON...WITH 40-50 KT WESTERLY 850 MB FLOW FOCUSED INTO SOUTHERN
WASHINGTON/NORTHERN OREGON COAST....IN WAKE OF SHORTWAVE TROUGH NOW
MOVING ACROSS WRN WA. THIS WILL ENHANCE LIFT ALONG SOUTHERN
PERIPHERY OF RETREATING MID-LEVEL COLD POOL...WHERE EQUILIBRIUM
LEVELS APPEAR LIKELY TO REMAIN COLD ENOUGH TO SUPPORT A FEW
THUNDERSTORMS. POTENTIAL IS EXPECTED TO DIMINISH BY LATE EVENING
INTO THE OVERNIGHT HOURS...AS UPPER IMPULSE PROGRESSES
INLAND...ONSHORE FLOW WEAKENS...AND MID LEVELS CONTINUE TO GRADUALLY
WARM.

..EVANS/CROSBIE.. 11/23/2006