⚠️ Special Weather Statement – Johnson; Muscatine; Scott; Louisa; Des Moines; Rock Island; Mercer; Henderson; Warren – Saturday, August 15, 2026

Special Weather Statement issued August 15 at 8:43PM CDT by NWS Quad Cities IA IL

Details

At 841 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Letts to near New Boston to 6 miles north
of Danville. Movement was east at 40 mph.

HAZARD…Winds in excess of 40 mph and very heavy rainfall
leading to flooding.

SOURCE…Radar indicated.

IMPACT…Gusty winds could cause minor tree limb damage and blow
around unsecured objects. Slowing or redirecting of traffic
due to ponding or flowing water. Closure of waterfront
access due to flooding.

Locations impacted include…
Davenport, Rock Island, Muscatine, Aledo, Wapello, Columbus Junction,
Oquawka, Milan, Burgess, Mediapolis, Blue Grass, Buffalo, Andalusia,
Fruitland, Viola, Danville, Morning Sun, Millersburg, Matherville,
and New Boston.

This includes Interstate 280 between mile markers 5 and 14.

Peak hourly rain rates between 1 to 2 inches possible in the hardest
hit areas.

Instructions

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is occurring and may lead to localized flooding.
Do not drive your vehicle through flooded roadways.

If the heavy rain continues, a flash flood warning may be needed.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.