[LeArc] Weather Watch : 8@ 7/18/2003 9:55:47 AM

[learc@mailman.qth.net]

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


WWUS20 KWNS 181454
SEL8  
SPC WW 181455
ILZ000-KYZ000-MOZ000-182000-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 758 
NWS STORM PREDICTION CENTER NORMAN OK 
955 AM CDT FRI JUL 18 2003

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

       SOUTHERN ILLINOIS
       WESTERN KENTUCKY
       EAST CENTRAL AND SOUTHEAST MISSOURI

EFFECTIVE THIS FRIDAY MORNING AND AFTERNOON FROM 955 AM UNTIL 300
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 80 STATUTE MILES
EAST AND WEST OF A LINE FROM 15 MILES EAST NORTHEAST OF SAINT
LOUIS MISSOURI TO 45 MILES SOUTH SOUTHWEST OF PADUCAH KENTUCKY.

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 756...SEVERE THUNDERSTORM WATCH
NUMBER 757. WATCH NUMBER 756 757 WILL NOT BE IN EFFECT AFTER 955
AM CDT. 


DISCUSSION...LARGER BOW ECHO ALONG SWRN PART OF MCS OVER THE MIDDLE
MS VALLEY IS EXPECTED TO MOVE SSEWD INTO SERN MO/SRN IL AND
EVENTUALLY WRN KY ALONG ERN EDGE OF STRONG LOW/MID LEVEL CAP WITHIN
ERN PORTION OF LOW LEVEL MOISTURE/INSTABILITY AXIS.  NWLY MID LEVEL
FLOW OF 40-45 KT IS FORECAST TO SPREAD SEWD THROUGH THIS REGION AND
MAINTAIN SUFFICIENT DEEP LAYER SHEAR TO ENHANCE STORM ORGANIZATION. 
DAMAGING WIND GUSTS WILL BE THE PRIMARY SEVERE THREAT...HOWEVER
OCCASIONAL HAIL WILL ALSO OCCUR WITH STRONGER CELLS.

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 31035.


...WEISS

;384,0883 362,0873 362,0903 384,0913; 

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