SEL1
SPC WW 242032
ILZ000-KSZ000-MOZ000-250300-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 531
NWS STORM PREDICTION CENTER NORMAN OK
335 PM CDT SAT JUL 24 2010
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
PARTS OF WESTERN ILLINOIS
PARTS OF NORTHEAST KANSAS
MUCH OF NORTHERN MISSOURI
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 335 PM UNTIL
1000 PM CDT.
HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 15 MILES EAST
SOUTHEAST OF QUINCY ILLINOIS TO 20 MILES SOUTHWEST OF TOPEKA
KANSAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).
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 529...WW 530...
DISCUSSION...THUNDERSTORMS ARE INCREASING IN NUMBER AND INTENSITY
ALONG AND N OF BOUNDARY THAT EXTENDS FROM SERN IA WSWWD THRU MKC.
WITH MLCAPES AOA 3500 J/KG AND 25-30KT OF SHEAR...DAMAGING WINDS
WILL BE LIKELY WITH THE STRONGEST UPDRAFTS ALONG WITH LARGE HAIL.
STORMS WILL GRADUALLY DEVELOP E/SE THRU THE EVENING.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN STORM
MOTION VECTOR 27020.
...HALES
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