[LeArc] Weather Watch : 3@ 6/25/2003 5:14:28 PM

[learc@mailman.qth.net]

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


WWUS20 KWNS 252213
SEL3  
SPC WW 252215
ILZ000-MOZ000-LMZ000-260300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 593 
NWS STORM PREDICTION CENTER NORMAN OK 
515 PM CDT WED JUN 25 2003

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

       NORTHERN AND CENTRAL ILLINOIS
       EAST CENTRAL MISSOURI
       LAKE MICHIGAN

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 515 PM UNTIL
1000 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 70 STATUTE MILES
EAST AND WEST OF A LINE FROM 45 MILES NORTH NORTHWEST OF MEIGS
FIELD ILLINOIS TO 50 MILES EAST SOUTHEAST OF JEFFERSON CITY
MISSOURI.

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 589...WW 590...WW 591...WW
592...


DISCUSSION...CLUSTERS OF THUNDERSTORMS OVER EASTERN MO AND EASTERN
IA WILL TRACK NORTHEASTWARD INTO WATCH AREA DURING THE NEXT FEW
HOURS. AIRMASS OVER THIS REGION IS VERY MOIST/UNSTABLE WITH
DEWPOINTS NEAR 70F AND MLCAPE VALUES OVER 2000 J/KG.  VERTICAL SHEAR
PROFILES ARE RATHER WEAK...BUT DEGREE OF INSTABILITY AND MESOSCALE
ORGANIZATION SUGGEST THE POTENTIAL FOR LARGE HAIL AND 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 25030.


...HART

;422,0863 381,0900 381,0923 422,0891; 

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