[LeArc] Weather Watch : 0@ 7/29/02 12:14:41 PM

[learc@mailman.qth.net]

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


WWUS20 KWNS 291717
SEL0  
SPC WW 291720
ILZ000-INZ000-292300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 550
STORM PREDICTION CENTER NORMAN OK
1120 AM CST MON JUL 29 2002

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

   SOUTHEAST ILLINOIS                           
   CENTRAL INDIANA                            

EFFECTIVE THIS MONDAY MORNING AND AFTERNOON FROM 1120 AM UNTIL 500
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 70 STATUTE MILES
EAST AND WEST OF A LINE FROM 40 MILES SOUTH SOUTHWEST OF
BLOOMINGTON INDIANA TO 35 MILES WEST NORTHWEST 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.

DISCUSSION...LINE OF THUNDERSTORMS HAS BEGUN TO INCREASE OVER
EASTERN IL ALONG SURFACE CONVERGENCE AXIS.  AIRMASS AHEAD OF LINE
IS VERY MOIST/UNSTABLE WITH MLCAPE VALUES AROUND 2500 J/KG.  30-40
KNOT FLOW AT 500MB AND DRY AIR ALOFT SUGGEST THE POTENTIAL FOR
DAMAGING WINDS IN 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 500.  MEAN STORM
MOTION VECTOR 26035.

...HART

;402,0844 383,0853 383,0881 402,0872;

WWWW