Dense Fog Advisory Extended to 9 AM CDT Friday for Six Central Illinois Counties
The National Weather Service in Lincoln has pushed the end time of a dense fog advisory back, extending the window beyond its first issuance.
Severe Weather in Cass County, Illinois
Every severe weather report published for Cass County, Illinois, newest first.
Dense Fog Advisory Extended for Adams, Brown and Pike Counties in Illinois and Parts of Missouri
The National Weather Service St Louis MO has pushed the end time of a dense fog advisory back, saying it now runs longer than first issued.
National Weather Service Extends Flood Watch Through Late Monday Night for Greene, Macoupin, and Montgomery Counties
The National Weather Service has issued a flood watch for parts of Illinois and Missouri, in effect from Thursday, September 3, 2026, through late Monday night.
Extreme Heat Warning Continues in Peoria, Champaign, and Other Central Illinois Counties
The National Weather Service warns that heat-related illnesses increase significantly during the ongoing extreme heat and high humidity.
Heat Advisory in Effect for Central Illinois Counties Until 7 PM Monday
The National Weather Service has issued a Heat Advisory for ten counties in central Illinois, with heat index values expected to exceed 100 degrees, in effect until 7 PM CDT Monday.
Heat Advisory for Greene, Macoupin, Montgomery IL Through Friday Evening
The National Weather Service has issued a Heat Advisory for parts of Illinois and Missouri, including Greene, Macoupin, and Montgomery counties in Illinois, with heat index values up to 105 expected.
Weather Service Details Flood Risks for 16 Illinois Counties
Excessive runoff from heavy rainfall could flood rivers, creeks, and urban areas through early August 20.
National Weather Service Issues Flood Watch for Central Illinois Counties
A Flood Watch is in effect for 12 counties across central, east central, and west central Illinois from midnight through 10:00 AM CDT on August 16, 2026.
National Weather Service Issues Flood Watch for Portions of Illinois and Missouri
A developing weather situation has prompted a Flood Watch for six zones across west central Illinois and northeast Missouri.