Immediate
Responsive action SHOULD be taken immediately
Illinois Severe Flash Flood Warning | Effective 09/17/2026 05:51
At 751 AM CDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between 3
and 5 inches of rain have fallen. Additional rainfall amounts up to 1
inch are possible in the warned area. Flash flooding is already
occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Rapid-onset flooding of creeks, streams, drainage ditches,
streets, underpasses, low-lying areas, and other poor
drainage areas.
Ohio Severe Flash Flood Warning | Effective 09/17/2026 05:26
FFWILN
The National Weather Service in Wilmington has extended the
* Flash Flood Warning for...
Northwestern Auglaize County in west central Ohio...
Mercer County in west central Ohio...
* Until 1100 AM EDT.
* At 826 AM EDT, radar indicated thunderstorms producing heavy rain
across the warned area. Between 2 and 3 inches of rain have fallen.
Additional rainfall amounts up to 0.5 inches are possible in the
warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
Indiana Severe Flood Warning | Effective 09/17/2026 05:27
...The Flood Warning is extended for the following rivers in
Indiana...
Wabash River near Linn Grove affecting Wells and Adams Counties.
For the Wabash River...including Linn Grove, Bluffton IN, Wabash,
Logansport...Moderate flooding is forecast.
* WHAT...Minor flooding is occurring and moderate flooding is
forecast. This approaches the flood of record.
* WHERE...Wabash River near Linn Grove.
* WHEN...Until Tuesday morning.
* IMPACTS...At 15.0 feet, The 100 year flood level is exceeded.
Illinois Severe Flash Flood Warning | Effective 09/17/2026 05:07
FFWLOT
The National Weather Service in Chicago has issued a
* Flash Flood Warning for...
Southern De Kalb County in north central Illinois...
Northern La Salle County in north central Illinois...
Southeastern Lee County in north central Illinois...
* Until 1100 AM CDT.
* At 707 AM CDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
2 and 4 inches of rain have fallen. Additional rainfall amounts up
Indiana, Ohio Severe Flash Flood Warning | Effective 09-17-2026 04:44
FFWIWX
The National Weather Service in Northern Indiana has issued a
* Flash Flood Warning for...
Adams County in northeastern Indiana...
Huntington County in northeastern Indiana...
Wells County in northeastern Indiana...
Southwestern Van Wert County in west central Ohio...
* Until 215 PM EDT Thursday.
* At 744 AM EDT, Scattered showers and thunderstorms continue across
the warned area. Doppler radar estimates between 2 and 5 inches of
rain have fallen overnight. Another round of heavy rainfall is
Indiana, Ohio Severe Flash Flood Warning | Effective 09/17/2026 04:44
FFWIWX
The National Weather Service in Northern Indiana has issued a
* Flash Flood Warning for...
Adams County in northeastern Indiana...
Huntington County in northeastern Indiana...
Wells County in northeastern Indiana...
Southwestern Van Wert County in west central Ohio...
* Until 215 PM EDT Thursday.
* At 744 AM EDT, Scattered showers and thunderstorms continue across
the warned area. Doppler radar estimates between 2 and 5 inches of
rain have fallen overnight. Another round of heavy rainfall is
Indiana Severe Flood Warning | Effective 09/17/2026 03:25
...The Flood Warning continues for the following rivers in Indiana...
Wabash River near Bluffton IN affecting Wells County.
Wabash River near Linn Grove affecting Adams and Wells Counties.
For the Wabash River...including Linn Grove, Bluffton IN...Moderate
flooding is forecast.
* WHAT...Minor flooding is occurring and moderate flooding is
forecast. This approaches the flood of record.
* WHERE...Wabash River near Linn Grove.
* WHEN...Until Monday evening.
* IMPACTS...At 14.0 feet, Secondary roads are blocked. Roads near the
Indiana Severe Flood Warning | Effective 09/17/2026 03:25
...The Flood Warning continues for the following rivers in Indiana...
Wabash River near Bluffton IN affecting Wells County.
Wabash River near Linn Grove affecting Adams and Wells Counties.
For the Wabash River...including Linn Grove, Bluffton IN...Moderate
flooding is forecast.
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Wabash River near Bluffton IN.
* WHEN...Until Monday evening.
* IMPACTS...At 13.0 feet, Access road to Bluffton wastewater
treatment plant is flooded.
* ADDITIONAL DETAILS...
Ohio Severe Flash Flood Warning | Effective 09/17/2026 03:06
FFWILN
The National Weather Service in Wilmington has issued a
* Flash Flood Warning for...
Northwestern Auglaize County in west central Ohio...
Mercer County in west central Ohio...
* Until 900 AM EDT.
* At 606 AM EDT, radar indicated thunderstorms producing heavy rain
across the warned area. Between 1 and 2.5 inches of rain have
fallen. Additional rainfall amounts of 0.5 to 1.5 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.