[LeArc] Weather Watch : 4@ 7/7/2003 2:42:42 AM

[learc@mailman.qth.net]

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


WWUS20 KWNS 070741
SEL4  
SPC WW 070740
IAZ000-ILZ000-MNZ000-WIZ000-071200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 664 CORR 1
NWS STORM PREDICTION CENTER NORMAN OK 
240 AM CDT MON JUL 7 2003

CORRECTED TO LIST ILLINOIS

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

 NORTHEAST IOWA        
 EXTREME NORTHWEST ILLINOIS   
 SOUTHEAST MINNESOTA 
 SOUTHWEST WISCONSIN 

EFFECTIVE THIS MONDAY MORNING FROM 240 AM UNTIL 700 AM 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 60 STATUTE MILES
EAST AND WEST OF A LINE FROM 45 MILES NORTH OF ROCHESTER MINNESOTA
TO 35 MILES EAST OF CEDAR RAPIDS IOWA.

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...CONTINUE...WW 662...


DISCUSSION...REGION OF STRONG LOW-LEVEL WAA ON THE NOSE OF A 40-50
KT LLJ WILL CONTINUE TO SUPPORT A THUNDERSTORM CLUSTER ACROSS SE
MN/NE IA/SW WI THE NEXT FEW HOURS.  A FEED OF 2500 J/KG MUCAPE FROM
THE SW WILL SUPPORT A FEW INTENSE UPDRAFTS WITHIN THE
CLUSTER...WHERE THE STRONGEST STORMS WILL BE CAPABLE OF PRODUCING
LARGE HAIL AND POSSIBLE DAMAGING WINDS.


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 27025.


...THOMPSON

;443,0911 415,0895 415,0921 443,0934; 

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