…A Severe Thunderstorm Watch has been issued…
Issued: 720 AM CDT Tue Aug 11 2026
Locations
Eastern Iowa, Northern and Central Illinois, Northwest Indiana, Southwest and Southern Wisconsin, Lake Michigan
Effective
This Tuesday morning and afternoon from 720 AM until 200 PM CDT.
Threats
Widespread damaging winds and isolated significant gusts to 85 mph likely, Isolated large hail events to 1.5 inches in diameter possible, A tornado or two possible
Situation
An intensifying squall line will continue east into the
Watch area this morning through the midday. Severe gusts (60 to 85
mph) will likely become more prevalent and widespread as the squall
line matures through the late morning. An embedded tornado or two
is possible within the squall line.
The severe thunderstorm watch area is approximately along and 100
statute miles north and south of a line from 30 miles west southwest
of Dubuque IA to 80 miles east of Marseilles IL. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU3).
Precautions
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.
