This map will show current Severe Weather Alerts for the state selected. Maps will not appear for areas which do not currently have any active Severe Weather Alerts. For a comprehensive forecast for your area, please visit the National Weather Service website at www.weather.gov.

Illinois Severe Weather Alerts

Flood Warning IllinoisState Weather Alerts

Flood Warning
...the Flood Warning Continues For The Following Rivers In Illinois...missouri... Mississippi River At Hannibal Mississippi River At Louisiana Mississippi River At Winfield Mississippi River At St. Louis ...Read More.
Effective: July 16, 2019 at 9:57amExpires: July 17, 2019 at 9:56amTarget Area: Jackson; Randolph

Flood Warning
...the Flood Warning Continues For The Following Rivers In Illinois...missouri... Mississippi River At Hannibal Mississippi River At Louisiana Mississippi River At Winfield Mississippi River At St. Louis ...Read More.
Effective: July 16, 2019 at 9:57amExpires: July 17, 2019 at 9:56amTarget Area: Jersey

Flood Warning
...the Flood Warning Continues For The Following Rivers In Illinois...missouri... Mississippi River At Hannibal Mississippi River At Louisiana Mississippi River At Winfield Mississippi River At St. Louis ...Read More.
Effective: July 16, 2019 at 9:57amExpires: July 17, 2019 at 9:56amTarget Area: Madison

Flood Warning
...the Flood Warning Continues For The Following Rivers In Illinois...missouri... Mississippi River At Hannibal Mississippi River At Louisiana Mississippi River At Winfield Mississippi River At St. Louis ...Read More.
Effective: July 16, 2019 at 9:57amExpires: July 19, 2019 at 7:00pmTarget Area: Pike

Flood Warning
...the Flood Warning Continues For The Following Rivers In Illinois...missouri... Mississippi River At Hannibal Mississippi River At Louisiana Mississippi River At Winfield Mississippi River At St. Louis ...Read More.
Effective: July 16, 2019 at 9:57amExpires: July 20, 2019 at 1:00amTarget Area: St. Clair

Flood Warning
...the Flood Warning Continues For The Following Rivers In Illinois...missouri... Mississippi River At Hannibal Mississippi River At Louisiana Mississippi River At Winfield Mississippi River At St. Louis ...Read More.
Effective: July 16, 2019 at 9:57amExpires: July 20, 2019 at 7:00amTarget Area: Pike

Flood Warning
...the Flood Warning Continues For The Following Rivers In Illinois...missouri... Mississippi River At Hannibal Mississippi River At Louisiana Mississippi River At Winfield Mississippi River At St. Louis ...Read More.
Effective: July 16, 2019 at 9:57amExpires: July 20, 2019 at 7:00pmTarget Area: Calhoun

Flood Warning
...the Flood Warning Continues For The Following Rivers In Illinois...missouri... Mississippi River At Hannibal Mississippi River At Louisiana Mississippi River At Winfield Mississippi River At St. Louis ...Read More.
Effective: July 16, 2019 at 9:57amExpires: July 21, 2019 at 1:00amTarget Area: Calhoun

Flood Warning
.tuesday Morning Forecast For The Mississippi River. River Forecasts Include Past Precipitation And Forecast Rainfall For The Next 24 Hours. ...flood Warning Remains In Effect Until Wednesday Evening... The Flood Warning Continues For The Mississippi River At Burlington. ...Read More.
Effective: July 16, 2019 at 9:50amExpires: July 18, 2019 at 1:00pmTarget Area: Hancock; Henderson

Flood Warning
.tuesday Morning Forecast For The Mississippi River. River Forecasts Include Past Precipitation And Forecast Rainfall For The Next 24 Hours. ...flood Warning Remains In Effect Until Wednesday Evening... The Flood Warning Continues For The Mississippi River At Gladstone Ld18. ...Read More.
Effective: July 16, 2019 at 9:50amExpires: July 18, 2019 at 1:00pmTarget Area: Henderson

Flood Warning
...the Flood Warning Continues For The Following Rivers In Illinois.. Illinois River At Valley City Illinois River At Hardin River Forecasts Are Based On Observed Precipitation And Forecast Precipitation For The Next 24 Hours. The Flood Warning Continues For ...Read More.
Effective: July 16, 2019 at 9:47amExpires: July 17, 2019 at 9:47amTarget Area: Calhoun; Greene; Jersey

Flood Warning
...the Flood Warning Continues For The Following Rivers In Illinois.. Illinois River At Valley City Illinois River At Hardin River Forecasts Are Based On Observed Precipitation And Forecast Precipitation For The Next 24 Hours. The Flood Warning Continues For ...Read More.
Effective: July 16, 2019 at 9:47amExpires: July 19, 2019 at 7:00amTarget Area: Pike; Scott

Flood Warning
...the Flood Warning Continues For The Following River In Illinois... Illinois River Near Havana Affecting Cass...fulton And Mason Counties Illinois River At Beardstown Affecting Brown...cass...morgan And Schuyler Counties .the Following Forecasts Are Based On Observed Precipitation, Soil ...Read More.
Effective: July 16, 2019 at 9:46amExpires: July 21, 2019 at 1:00pmTarget Area: Cass; Fulton; Mason

Flood Warning
...the Flood Warning Continues For The Following River In Illinois... Illinois River Near Havana Affecting Cass...fulton And Mason Counties Illinois River At Beardstown Affecting Brown...cass...morgan And Schuyler Counties .the Following Forecasts Are Based On Observed Precipitation, Soil ...Read More.
Effective: July 16, 2019 at 9:46amExpires: July 23, 2019 at 7:00amTarget Area: Brown; Cass; Morgan; Schuyler

Flood Warning
...the Flood Warning Continues For The Following Rivers In Illinois...missouri... Mississippi River At Cape Girardeau And Thebes .minor To Moderate Flooding Continues On The Mississippi River At Cape Girardeau And Thebes. Water Levels Continue To Slowly Fall At Both Locations. At Cape Girardeau, The River Is Forecast To Fall ...Read More.
Effective: July 15, 2019 at 7:39pmExpires: July 16, 2019 at 11:37pmTarget Area: Alexander; Jackson; Union

Flood Warning
...the Flood Warning Continues For The Following Rivers In Illinois...missouri... Mississippi River At Cape Girardeau And Thebes .minor To Moderate Flooding Continues On The Mississippi River At Cape Girardeau And Thebes. Water Levels Continue To Slowly Fall At Both Locations. At Cape Girardeau, The River Is Forecast To Fall ...Read More.
Effective: July 15, 2019 at 7:39pmExpires: July 25, 2019 at 7:00pmTarget Area: Alexander

 

Severe Weather Alerts in Illinois Illinois Frequent Weather Alerts: Blizzards, winter storms, flooding, tornadoes, thunderstorms.

Due to its 400 miles length and mid-continental positioning, Illinois has a climate that varies widely. Most of the State has humid, hot summers and cold winters. The southern portion has a more moderate winter.

One of the flattest states, there are no mountains to keep very cold Arctic air masses away in the winter or the humid air masses flowing in from the Gulf of Mexico in the summertime. Extreme cold and heat are not uncommon.

In the winter, wind chills can make the temperature seem much lower than it is; negative double digits happen annually and warnings are sent out to protect the vulnerable. In the summer, heat advisories warn people to stay indoors due to deadly temperatures. The humidity makes temperatures seem warmer than they are.

Flooding is common in the state and Illinois struggles with urban flooding caused by a combination of heavy rainfall and water-resistant roads.

Storms can happen during any season and severe thunderstorms are a normal part of the spring and early summer season. When severe enough, they can cause destructive tornadoes. Winter storms can bring heavy snowfall that can also lead to flooding if it melts too quickly.