⚠️ Severe Thunderstorm Watch – Clinton, IA; Scott, IA; Bureau, IL; Hancock, IL; Henderson, IL; Henry, IL; McDonough, IL; Mercer, IL; Putnam, IL; Rock Island, IL; Warren, IL; Whiteside, IL; Clark, MO; Scotland, MO – Monday, July 20, 2026

Event	Severe Thunderstorm Watch
Severity	Severe
Urgency	Future
Certainty	Possible
Area	Clinton, IA; Scott, IA; Bureau, IL; Hancock, IL; Henderson, IL; Henry, IL; McDonough, IL; Mercer, IL; Putnam, IL; Rock Island, IL; Warren, IL; Whiteside, IL; Clark, MO; Scotland, MO
Effective	7/20/2026, 5:39:00 PM CDT
Expires	7/20/2026, 11:00:00 PM CDT

Severe Thunderstorm Watch issued July 20 at 5:39PM CDT until July 20 at 11:00PM CDT by NWS Quad Cities IA IL

Details

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
504 IN EFFECT UNTIL 11 PM CDT THIS EVENING FOR THE FOLLOWING
AREAS

IN ILLINOIS THIS WATCH INCLUDES 10 COUNTIES

IN NORTH CENTRAL ILLINOIS

BUREAU PUTNAM

IN NORTHWEST ILLINOIS

HENRY IL MERCER ROCK ISLAND
WHITESIDE

IN WEST CENTRAL ILLINOIS

HANCOCK HENDERSON MCDONOUGH
WARREN

IN IOWA THIS WATCH INCLUDES 2 COUNTIES

IN EAST CENTRAL IOWA

CLINTON SCOTT

IN MISSOURI THIS WATCH INCLUDES 2 COUNTIES

IN NORTHEAST MISSOURI

CLARK SCOTLAND

THIS INCLUDES THE CITIES OF ALEDO, BETTENDORF, CARTHAGE, CLINTON,
CREDIT ISLAND, DAVENPORT, GENESEO, HENNEPIN, KAHOKA, MACOMB,
MEMPHIS, MOLINE, MONMOUTH, OQUAWKA, PRINCETON, ROCK ISLAND,
AND STERLING.

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