[LeArc] Weather Watch : 7@ 3/20/03 12:34:41 PM

[learc@mailman.qth.net]

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


WWUS20 KWNS 201844
SEL7  
SPC WW 201845
ILZ000-INZ000-KYZ000-TNZ000-210100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 67
STORM PREDICTION CENTER NORMAN OK
1245 PM CST THU MAR 20 2003

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

   SOUTHERN ILLINOIS                           
   SOUTHWEST INDIANA                            
   WESTERN KENTUCKY                           
   WEST AND MIDDLE TENNESSEE                          

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 1245 PM UNTIL
700 PM CST.

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 75 STATUTE MILES
EAST AND WEST OF A LINE FROM 40 MILES EAST NORTHEAST OF SALEM
ILLINOIS TO 35 MILES WEST SOUTHWEST OF NASHVILLE TENNESSEE.

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 65...WW 66...

DISCUSSION...AIR MASS CONTINUES TO RAPIDLY DESTABILIZE UNDERNEATH
MID LEVEL THERMAL POOL.  SBCAPE IS AROUND 1500 J/KG WITH WET BULB
ZERO/FREEZING LEVELS 6000 TO 8000 FEET.  STRONG WINDS AND HAIL CAN
ACCOMPANY THE DEVELOPING STORMS.


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 400.  MEAN STORM
MOTION VECTOR 22035.


...MCCARTHY

;355,0883 385,0894 385,0865 355,0855;
WWWW