[LeArc] Weather Watch : 0@ 7/27/02 8:50:59 PM

[learc@mailman.qth.net]

The following weather message is provided by McDonough County E.S.D.A.


WWUS20 KWNS 280153
SEL0  
SPC WW 280155
IAZ000-ILZ000-WIZ000-280700-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 540
STORM PREDICTION CENTER NORMAN OK
855 PM CDT SAT JUL 27 2002

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   EASTERN IOWA                               
   NORTHWEST ILLINOIS                           
   SOUTHWEST WISCONSIN                          

EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 855 PM UNTIL
200 AM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 50 STATUTE MILES
EITHER SIDE OF A LINE FROM 85 MILES SOUTHWEST OF WATERLOO IOWA TO
15 MILES NORTHEAST OF MADISON WISCONSIN.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.  SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.

OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES
SEVERE THUNDERSTORM WATCH NUMBER 539.  WATCH NUMBER 539 WILL NOT BE
IN EFFECT AFTER 855 PM CDT.  CONTINUE...WW 538...

DISCUSSION...SEVERE THUNDERSTORMS OVER NRN IA CONTINUE TO DEVELOP
EWD INTO A VERY UNSTABLE AIRMASS. WITH THE MODERATE DEEP LAYER
SHEAR OVER THE AREA...EXPECT STORMS TO CONTINUE SEVERE AS THEY MOVE
EWD NEXT SEVERAL HOURS.


AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600.  MEAN STORM
MOTION VECTOR 27030.


...HALES

;422,0935 435,0892 423,0884 405,0931;
WWWW