Illinois Severe Thunderstorm Warning | Effective 04/17/2026 16:38

Headline: 
Severe Thunderstorm Warning issued April 17 at 6:38PM CDT until April 17 at 7:15PM CDT by NWS Lincoln IL
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
April 17, 2026 - 4:38pm
Expires: 
April 17, 2026 - 5:15pm
Description: 
SVRILX The National Weather Service in Lincoln has issued a * Severe Thunderstorm Warning for... Knox County in west central Illinois... * Until 715 PM CDT. * At 637 PM CDT, severe thunderstorms were located along a line extending from near Alpha to near Abingdon to near Roseville, moving northeast at 40 mph. HAZARD...70 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings. * Severe thunderstorms will be near... Galesburg, Henderson, and Rio around 640 PM CDT. Wataga around 650 PM CDT. Other locations in the path of these severe thunderstorms include Oneida and Altona. This includes Interstate 74 between mile markers 34 and 68.
Instruction: 
Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building. A Tornado Watch remains in effect until 1100 PM CDT for central, north central and west central Illinois.
Area Description: 
Knox, IL
Forcast Office: 
NWS Lincoln IL
Sender: 
w-nws.webmaster@noaa.gov