[SWODY1] SWODY1

[Severe Weather Outlook Day 1]

ACUS01 KWNS 261245
SWODY1
SPC AC 261242

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
0642 AM CST SUN NOV 26 2006

VALID 261300Z - 271200Z

...NO SVR TSTM AREAS FORECAST...

BROAD UPPER TROUGH WILL REMAIN OVER THE WESTERN AND CENTRAL STATES
TODAY...WITH RIDGING MAINTAINING CONTROL OVER THE SOUTHEAST REGION. 
TWO AREAS APPEAR TO HAVE A THREAT OF ISOLATED-SCATTERED
THUNDERSTORMS TODAY:  THE MIDWEST STATES AND THE PACIFIC NORTHWEST
COAST.

...CENTRAL PLAINS INTO MIDWEST...
MID LEVEL VORT MAX CURRENTLY OVER WESTERN CO HAS RESULTED IN
ISOLATED LIGHTNING STRIKES OVERNIGHT SOUTH OF GJT.  THIS FEATURE
WILL MOVE ACROSS THE CENTRAL PLAINS TODAY AND APPROACH THE WESTERN
EDGE OF MORE MOIST/UNSTABLE AIRMASS LATER THIS AFTERNOON AND
EVENING.  LOW LEVEL WARM ADVECTION AND LIFT WILL HELP TO INITIATE
SCATTERED THUNDERSTORMS OVER EASTERN NEB/NORTHEAST KS AFTER
00Z...SPREADING NORTHEASTWARD ACROSS IA DURING THE NIGHT.  PRESENT
INDICATIONS ARE THAT WEAK INSTABILITY WILL PRECLUDE A RISK OF
ORGANIZED SEVERE STORMS.

...PACIFIC NORTHWEST COAST...
VIGOROUS UPPER TROUGH IS MOVING ASHORE THIS MORNING ALONG THE WA/ORE
COASTS.  ISOLATED LIGHTNING STRIKES WILL BE POSSIBLE ALONG COASTAL
RANGES EARLY TODAY AS SYSTEM PASSES.  OTHER CONVECTION MAY DEVELOP
THIS AFTERNOON IN WAKE OF SHORTWAVE TROUGH DUE TO COLD TEMPERATURES
ALOFT AND OROGRAPHIC LIFT.

..HART/TAYLOR.. 11/26/2006