343
WWUS20 KWNS 171247
SEL0
SPC WW 171247
ILZ000-MOZ000-172000-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 340
NWS STORM PREDICTION CENTER NORMAN OK
750 AM CDT WED JUN 17 2026
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* TORNADO WATCH FOR PORTIONS OF
CENTRAL AND NORTHERN ILLINOIS
FAR NORTHEAST MISSOURI
* EFFECTIVE THIS WEDNESDAY MORNING AND AFTERNOON FROM 750 AM
UNTIL 300 PM CDT.
* PRIMARY THREATS INCLUDE...
A FEW TORNADOES AND A COUPLE INTENSE TORNADOES POSSIBLE
WIDESPREAD DAMAGING WINDS EXPECTED WITH ISOLATED SIGNIFICANT
GUSTS TO 85 MPH POSSIBLE
SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2.5
INCHES IN DIAMETER POSSIBLE
SUMMARY...AN INTENSE LINE OF STORMS WITH HISTORY OF SIGNIFICANT WIND
GUSTS ACROSS IOWA WILL CONTINUE TO QUICKLY PROGRESS
EAST-SOUTHEASTWARD INTO AND ACROSS CENTRAL/NORTHERN ILLINOIS EARLY
TODAY. THIS INCLUDES A SIGNIFICANT POTENTIAL FOR WIND DAMAGE ASIDE
FROM AN INCREASING RISK FOR TORNADOES, AS WELL AS BOUTS OF LARGE
HAIL.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 20 MILES SOUTH SOUTHWEST OF
BURLINGTON IA TO 35 MILES EAST OF CHAMPAIGN IL. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU0).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.
OTHER WATCH INFORMATION...CONTINUE...WW 339...
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 75 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN
STORM MOTION VECTOR 30045.
...GUYER
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