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Silvis Warnings, Watches and Advisories

NWS Active Alerts for IL - Map View

State: IL Total alerts: 3 Updated: Sep 14, 2026 8:57pm CDT

Beach Hazards Statement

Area
Lake; Northern Cook

Beach Hazards Statement issued September 14 at 1:43PM CDT until September 15 at 7:00AM CDT by NWS Chicago IL

* WHAT...High wave action and dangerous currents at Lake Michigan beaches expected. Waves greater than 4 feet expected. * WHERE...Lake IL and Northern Cook Counties. * WHEN...From 5 PM CDT this afternoon through Tuesday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers.

Severity
Moderate

Certainty
Likely

Urgency
Expected

Published
September 14th, 2026 01:43:00 pm CDT

Effective
September 14th, 2026 01:43:00 pm CDT

Expires
September 14th, 2026 09:45:00 pm CDT

Heat Advisory

Area
Bond; Clinton; Marion; Washington; Randolph; Madison; St. Clair; Monroe; Moniteau; Cole; Osage; Gasconade; Warren; St. Charles; Franklin; St. Louis; St. Louis City; Jefferson; Crawford; Washington; St. Francois; Ste. Genevieve; Iron; Madison; Reynolds

Heat Advisory issued September 14 at 11:30AM CDT until September 15 at 7:00PM CDT by NWS St Louis MO

* WHAT...Heat index values up to 107 expected. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...From 11 AM to 7 PM CDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Severity
Moderate

Certainty
Likely

Urgency
Expected

Published
September 14th, 2026 11:30:00 am CDT

Effective
September 14th, 2026 11:30:00 am CDT

Expires
September 15th, 2026 02:30:00 am CDT

Heat Advisory

Area
Jefferson; Wayne; Edwards; Wabash; Perry; Franklin; Hamilton; White; Jackson; Williamson; Saline; Gallatin; Union; Johnson; Pope; Hardin; Alexander; Pulaski; Massac; Gibson; Pike; Posey; Vanderburgh; Warrick; Spencer; Ballard; McCracken; Livingston; Marshall; Calloway; Crittenden; Lyon; Trigg; Caldwell; Union; Webster; Hopkins; Christian; Henderson; Daviess; McLean; Muhlenberg; Todd; Perry; Bollinger; Cape Girardeau; Wayne

Heat Advisory issued September 14 at 11:22AM CDT until September 16 at 7:00PM CDT by NWS Paducah KY

* WHAT...Peak daily Heat Index values near 100 up to around 105 degrees expected. * WHERE...All of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri. * WHEN...From 11 AM CDT /noon EDT/ Tuesday to 7 PM CDT /8 PM EDT/ Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Severity
Moderate

Certainty
Likely

Urgency
Expected

Published
September 14th, 2026 11:22:00 am CDT

Effective
September 14th, 2026 11:22:00 am CDT

Expires
September 15th, 2026 04:15:00 am CDT

SAFETY and DATA MESSAGE

When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Silvis.

Use the Radar Maps link provided to understand the trajectory of a storm.

Radar Maps

For more official information about severe storms and how to stay safe, visit the National Weather Service's Severe Thunderstorm Safety page. We encourage you to also monitor Excessive Rainfall Forecasts on their Weather Prediction Center website.

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