[LeArc] SEVERE THUNDERSTORM WATCH NUMBER 202 (McDonough Co)

[Duane Whittingham]

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 202
NWS STORM PREDICTION CENTER NORMAN OK
915 PM CDT TUE APR 18 2006

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

WEST CENTRAL ILLINOIS
NORTHEAST MISSOURI

EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 915 PM
UNTIL 300 AM CDT.

HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 50
STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH OF
QUINCY ILLINOIS TO 35 MILES WEST OF ALTON ILLINOIS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU2).

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...<http://www.spc.noaa.gov/products/watch/ww0199.html>WW 
199...<http://www.spc.noaa.gov/products/watch/ww0200.html>WW 
200...<http://www.spc.noaa.gov/products/watch/ww0201.html>WW 201...

DISCUSSION...ELEVATED THUNDERSTORMS WILL SPREAD EWD FROM MO INTO IL
THE NEXT FEW HOURS...N OF A SURFACE LOW AND WARM FRONT MOVING
ROUGHLY TOWARD THE STL AREA.  GIVEN THE STABLE LOW LEVELS AND MUCAPE
OF ABOUT 1000-1500 J/KG N OF THE WARM FRONT...EXPECT LARGE HAIL TO
BE THE MAIN SEVERE WEATHER THREAT THROUGH THE EARLY MORNING HOURS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM
MOTION VECTOR 27025.


...THOMPSON


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Amateur Radio Operator
Duane Whittingham - N9SSN
Skywarn, ARES/RACES, EMA/ESDA
Red Cross and SATERN