[SWODY1] SWODY1

[Severe Weather Outlook Day 1]

ACUS01 KWNS 200045
SWODY1
SPC AC 200043

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
0643 PM CST SUN NOV 19 2006

VALID 200100Z - 201200Z

...NO SVR TSTM AREAS FORECAST...

...OLYMPIC PENINSULA...

STRONG HEIGHT FALLS ARE FORECAST ACROSS REGION TONIGHT AS INTENSE
MID AND UPPER-LEVEL JET STREAKS DEVELOP SEWD FROM THE FAR ERN
PACIFIC AND BRITISH COLUMBIA INTO WA AND ORE.  20/00Z UIL SOUNDING
INDICATES THAT RELATIVELY STEEP 0-3 KM AGL LAPSE RATES ARE
CONTRIBUTING TO A WEAKLY UNSTABLE ENVIRONMENT WITH MUCAPES OF
100-200 J/KG AND EQUILIBRIUM LEVEL TEMPERATURES OF AROUND -19 TO -20
C.  

FURTHER DESTABILIZATION IS EXPECTED OVERNIGHT AS HEIGHT
FALLS/DYNAMIC COOLING ON CYCLONIC SIDE OF MID-LEVEL JET STREAK
INCREASE FROM THE NW.  AS SUCH...EXPECT ISOLATED TSTM ACTIVITY /PER
OCEANIC LIGHTNING DATA/ CURRENTLY 100-120 NM OFFSHORE TO GRADUALLY
MOVE/DEVELOP INLAND LATER TONIGHT.

..MEAD.. 11/20/2006