2 concurrent flood warnings — 34 counties affected
A severe flood outbreak began on August 15, 2026, affecting multiple counties across central Illinois and Indiana, bringing water damage and mold risk to homes in the region.
Overview written from official NOAA / National Weather Service data.
- Type
- Flood Outbreak
- Extent
- ≈ 19,997,086 acres
- Began
- Status
- Ongoing
Affected by this event? Open your area's damage guides below to reach a vetted local restoration pro, 24/7.
Affected area map
Each shaded area is one covered warning's reported footprint — this outbreak groups the 60 warnings listed below, colored by hazard type. Press Play below to watch each footprint appear in the order it was issued. Pan and zoom to explore the map.
Interactive affected-area map
Cass County, IL; Mason County, IL; Madison County, IN; McLean County, IL; Montgomery County, IN; Champaign County, IL; Warren County, IN; Hamilton County, IN; Gibson County, IN; Clinton County, IN; Ford County, IL; Hancock County, IN; Peoria County, IL; Marion County, IN; Vermilion County, IL; Merce · ≈ 31,000 sq mi reported extent · Enable JavaScript to explore the map.
2026-08-24 14:46 UTC · snapshot 52 of 52
Shown as reported by our sources — not an official product. For current advisories and the authoritative map, see NOAA / National Weather Service ↗.
Restoration help near this event
Tap your city for a vetted local pro on that service, answered 24/7. Where we don't have a nearby city page yet, the step-by-step guides cover what to do first.
Water damage restoration
What to do now
Mold remediation
What to do now
Latest updates
We post official updates here as an event develops. There are no curated updates for this event yet — for the latest bulletins and advisories, follow the official source directly.
Warnings covered
2 active warnings in this outbreak
This page tracks the outbreak as a whole; each entry below is one official warning thread with its own live status, map and update log.
- Flood Warning — Brown, IL +3Brown, IL; Cass, IL; Morgan, IL; Schuyler, ILsevereActive
- Flood Warning — Cass, IL +2Cass, IL; Fulton, IL; Mason, ILsevereActive
- Flood Warning — Allen, INAllen, INsevereEnded
- Flood Warning — Allen, OH +2Allen, OH; Paulding, OH; Putnam, OHsevereEnded
- Flash Flood Warning — Boone, IN +3Boone, IN; Carroll, IN; Clinton, IN; Tippecanoe, INsevereEnded
- Flood Warning — Boone, IN +3Boone, IN; Carroll, IN; Clinton, IN; Tippecanoe, INsevereEnded
- Flood Warning — Boone, IN +3Boone, IN; Carroll, IN; Clinton, IN; Tippecanoe, INsevereEnded
- Flood Warning — Boone, IN +2Boone, IN; Hendricks, IN; Marion, INsevereEnded
- Flood Warning — Bureau, IL +2Bureau, IL; La Salle, IL; Putnam, ILsevereEnded
- Flash Flood Warning — Champaign, ILChampaign, ILsevereEnded
- Flash Flood Warning — Champaign, IL +1Champaign, IL; Vermilion, ILsevereEnded
- Flood Warning — Champaign, IL +1Champaign, IL; Vermilion, ILsevereEnded
- Flood Warning — Daviess, IN +3Daviess, IN; Gibson, IN; Knox, IN; Pike, INsevereEnded
- Flood Warning — Daviess, IN +3Daviess, IN; Gibson, IN; Knox, IN; Pike, INsevereEnded
- Flood Warning — Daviess, IN +2Daviess, IN; Greene, IN; Knox, INsevereEnded
- Flood Warning — Daviess, IN +2Daviess, IN; Greene, IN; Knox, INsevereEnded
- Flash Flood Warning — Delaware, IN +1Delaware, IN; Henry, INsevereEnded
- Flood Warning — Delaware, IN +1Delaware, IN; Henry, INsevereEnded
- Flash Flood Warning — Des Moines, IA +5Des Moines, IA; Henry, IA; Jefferson, IA; Lee, IA; Van Buren, IA; Henderson, ILsevereEnded
- Flood Warning — Des Moines, IA +2Des Moines, IA; Henry, IA; Lee, IAsevereEnded
- Flood Warning — Ford, ILFord, ILsevereEnded
- Flash Flood Warning — Ford, ILFord, ILsevereEnded
- Flash Flood Warning — Ford, IL +1Ford, IL; Iroquois, ILsevereEnded
- Flood Warning — Fountain, IN +4Fountain, IN; Montgomery, IN; Tippecanoe, IN; Vermillion, IN; Warren, INsevereEnded
- Flash Flood Warning — Fountain, IN +2Fountain, IN; Vermillion, IN; Warren, INsevereEnded
- Flood Warning — Fountain, IN +2Fountain, IN; Vermillion, IN; Warren, INsevereEnded
- Flood Warning — Fulton, IL +5Fulton, IL; Knox, IL; Mason, IL; Peoria, IL; Tazewell, IL; Woodford, ILsevereEnded
- Flash Flood Warning — Fulton, IL +5Fulton, IL; Knox, IL; Mason, IL; Peoria, IL; Tazewell, IL; Woodford, ILsevereEnded
- Flood Warning — Gibson, IN +1Gibson, IN; Knox, INsevereEnded
- Flood Warning — Greene, IN +2Greene, IN; Monroe, IN; Owen, INsevereEnded
- Flood Warning — Hamilton, IN +2Hamilton, IN; Madison, IN; Tipton, INsevereEnded
- Flash Flood Warning — Hamilton, IN +1Hamilton, IN; Tipton, INsevereEnded
- Flood Warning — Hamilton, IN +1Hamilton, IN; Tipton, INsevereEnded
- Flood Warning — Hancock, IL +1Hancock, IL; McDonough, ILsevereEnded
- Flash Flood Warning — Hancock, INHancock, INsevereEnded
- Flood Warning — Hancock, INHancock, INsevereEnded
- Flood Warning — Hancock, INHancock, INsevereEnded
- Flash Flood Warning — Henderson, IL +2Henderson, IL; McDonough, IL; Warren, ILsevereEnded
- Flash Flood Warning — Hendricks, IN +1Hendricks, IN; Marion, INsevereEnded
- Flood Warning — Hendricks, IN +1Hendricks, IN; Marion, INsevereEnded
- Flood Warning — Iroquois, ILIroquois, ILsevereEnded
- Flood Warning — Lee, IALee, IAsevereEnded
- Flash Flood Warning — Lee, IA +1Lee, IA; Hancock, ILsevereEnded
- Flash Flood Warning — Louisa, IA +1Louisa, IA; Mercer, ILsevereEnded
- Flood Warning — Madison, INMadison, INsevereEnded
- Flash Flood Warning — Madison, INMadison, INsevereEnded
- Flash Flood Warning — McLean, ILMcLean, ILsevereEnded
- Flash Flood Warning — McLean, ILMcLean, ILsevereEnded
- Flash Flood Warning — McLean, ILMcLean, ILsevereEnded
- Flash Flood Warning — McLean, ILMcLean, ILsevereEnded
- Flood Warning — McLean, ILMcLean, ILsevereEnded
- Flood Warning — McLean, ILMcLean, ILsevereEnded
- Flood Warning — McLean, ILMcLean, ILsevereEnded
- Flash Flood Warning — McLean, ILMcLean, ILsevereEnded
- Flood Warning — McLean, IL +2McLean, IL; Tazewell, IL; Woodford, ILsevereEnded
- Flood Warning — Montgomery, IN +1Montgomery, IN; Tippecanoe, INsevereEnded
- Flash Flood Warning — Montgomery, IN +1Montgomery, IN; Tippecanoe, INsevereEnded
- Flood Warning — Piatt, ILPiatt, ILsevereEnded
- Flash Flood Warning — Rush, INRush, INsevereEnded
- Flash Flood Warning — Vermilion, ILVermilion, ILsevereEnded