[IWX_warnings] SEL6

[Severe weather warnings from NWS IWX.]

WWUS20 KWNS 240250
SEL6  
SPC WW 240250
ILZ000-INZ000-WIZ000-LMZ000-240900-


SVR STRM WTCH 736
NWS SPC 
950P WED AUG 23 2006

THE NWS SPC HAS ISSUED A
SVR STRM WATCH FOR PORTIONS OF 

       NE IL
       NW IN
       S WI
       LK MI

EFFCTVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 950 PM
UNTL 400A.

HAIL TO 2 INCHES IN DIAMETER STRM WIND GUSTS TO 70
MPH AND DNGRS LIGHTNING ARE PSBL IN THESE AREAS.

THE SVR STRM WATCH AREA IS APPROXIMATELY ALONG AND 65
STATUTE MI NORTH AND S OF A LN FROM 25 MI WEST
SW OF CAMP DOUGLAS WI TO 40 MI NE OF
MEIGS FIELD IL.  FOR A COMPLETE DEPICTION OF THE WATCH SEE
THE ASSOCIATED WATCH OUTLN UPDATE (WOUS64 KWNS WOU6).

REMEMBER A SVR STRM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SVR STRMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WX CONDITIONS AND LISTEN FOR LATER STMENTS
AND PSBL WARNINGS. SVR STRMS CAN AND OCCASIONALLY
DO PRDCE TRNDOES.

OTHER WATCH INFORMATION THIS SVR STRM WATCH REPLACES
TRNDO WTCH 734. WTCH 734 WILL NOT BE IN EFFECT
AFTER 950P. CNTINU WW 735 

DISCUSSION SVR STRMS EXP TO CNTINU REDVLPNG
IN THE FAVORABLE SHEAR AND WARM ADVECTION REGION TO N OF STATIONARY
FRONTAL ZONE THAT EXTENDS FORM NRN IND TO SRN MN.  WITH MLCAPES TO
2500 J/KG AND 40-50KT OF DEEP LAYER SHEAR SUPERCELLS ARE LIKELY. 
PRIMARY THREAT WILL BE LRG HAIL AND DMGG DOWNBURSTS WINDS.

AVIATION A FEW SVR STRMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STRM
MOTION VECTOR 31030.


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