[LeArc] Weather Watch : 7@ 7/8/2003 6:15:09 PM

[learc@mailman.qth.net]

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


WWUS20 KWNS 082314
SEL7  
SPC WW 082315
IAZ000-ILZ000-MOZ000-090400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 687 
NWS STORM PREDICTION CENTER NORMAN OK 
615 PM CDT TUE JUL 8 2003

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

       SOUTHERN IOWA
       CENTRAL ILLINOIS
       NORTHERN MISSOURI

EFFECTIVE THIS TUESDAY EVENING FROM 615 PM UNTIL 1100 PM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 65 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 60 MILES WEST NORTHWEST OF LAMONI
IOWA TO 40 MILES EAST NORTHEAST OF MATTOON ILLINOIS.

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
TORNADO WATCH NUMBER 683. WATCH NUMBER 683 WILL NOT BE IN EFFECT
AFTER 615 PM CDT. CONTINUE...WW 681...WW 682...WW 684...WW
685...WW 686...


DISCUSSION...THUNDERSTORM CLUSTERS...INCLUDING A COUPLE
SUPERCELLS...EXPECTED TO PERSIST ALONG STALLED OUTFLOW
BOUNDARIES/FRONT FROM SW IA ESEWD TO E CNTRL IL.  GIVEN STRONG
INSTABILITY...MODERATE DEEP WNWLY SHEAR AND POTENTIAL FOR STORM
MERGERS...POTENTIAL WILL EXIST FOR HAIL AND  BOWING SEGMENTS WITH
HIGH WIND.

AVIATION...A FEW SEVERE THUNDERSTORMS 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 STORM
MOTION VECTOR 28030.


...CORFIDI

;415,0945 403,0873 384,0873 400,0945; 

WWWW