[LeArc] Weather Watch : 4@ 7/6/2003 1:09:14 PM

[learc@mailman.qth.net]

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


WWUS20 KWNS 061807
SEL4  
SPC WW 061810
ILZ000-INZ000-062300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 654 
NWS STORM PREDICTION CENTER NORMAN OK 
110 PM CDT SUN JUL 6 2003

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

       CENTRAL ILLINOIS
       CENTRAL AND PART OF NORTHERN INDIANA

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 110 PM UNTIL 600
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 50 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM SPRINGFIELD ILLINOIS TO 30 MILES
EAST NORTHEAST OF MUNCIE INDIANA.

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 653...


DISCUSSION...NUMEROUS OUTFLOW BOUNDARIES ARE GENERATING SMALL CB/S
AND TCU ACROSS THE REGION.  THE MOST ACTIVE APPEAR TO BE N-S
ORIENTED BOUNDARY OVER CENTRAL IL AND E-W BOUNDARY EXTENDING FROM
CENTRAL IL INTO CENTRAL IND.  THOUGH SHEAR IS NOT TOO STRONG...SFC-6
KM SHEAR AROUND 20 KT AND EXTREMELY UNSTABLE AIR MASS WILL PROVE
FAVORABLE FOR SEVERE THUNDERSTORMS AND POSSIBLY A SUPERCELL OR TWO. 
PRIMARY SEVERE THREATS WILL BE DAMAGING WINDS AND LARGE HAIL.

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 500. MEAN STORM
MOTION VECTOR 25020.


...EVANS

;403,0894 410,0845 394,0845 390,0894; 

WWWW