Live snapshot as of 9:20 PM EDT, Sunday, September 20, 2026. The National Weather Service in Wilmington, Ohio has issued a Flash Flood Warning for northwestern Fayette County and Greene County — including Xenia, Beavercreek, Bellbrook, and Cedarville — in effect until 11:30 PM EDT. Radar indicates thunderstorms that have dropped between 1.5 and 2.5 inches of rain across the warned area, with flash flooding ongoing or expected to begin shortly. Be especially cautious tonight: the NWS flags that it is harder to recognize flooding dangers after dark.
This is a live snapshot as of 9:20 PM EDT. Conditions change fast — always verify with the National Weather Service for your specific county or ZIP code.
Fayette and Greene Counties — Flash Flood Warning
- Issuing office: National Weather Service Wilmington, Ohio (weather.gov/iln)
- Issued: 9:06 PM EDT, Sunday, September 20, 2026
- Expires: 11:30 PM EDT, Sunday, September 20, 2026
- Area: Northwestern Fayette County in central Ohio; Greene County in west central Ohio
- Hazard: Flash flooding caused by thunderstorms
- Source: Radar indicated
At 9:06 PM EDT, radar indicated thunderstorms producing heavy rain across the warned area. Between 1.5 and 2.5 inches of rain have fallen, with additional rainfall amounts of 0.5 to 1 inch possible in the warned area. The NWS states flash flooding is ongoing or expected to begin shortly.
Impacts per the alert: Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses, as well as other poor drainage and low-lying areas.
Locations that may experience flash flooding include: Beavercreek, Xenia, Bellbrook, Cedarville, Jamestown, Wilberforce, New Jasper, Spring Valley, Bowersville, Paintersville, Oldtown, Trebein, Greene County Airport, Bell Center, and Rosemoor. This includes I-71 in Ohio between mile markers 60 and 63.
The NWS instructions: turn around, don’t drown when encountering flooded roads — most flood deaths occur in vehicles. Be especially cautious at night, when it is harder to recognize the dangers of flooding. To report flash flooding, go to weather.gov/iln and submit a report via social media when it can be done safely.
Stay safe tonight
Turn around, don’t drown. Most flood deaths occur in vehicles — never drive through flooded roadways or around barricades. The NWS specifically warns that flooding is harder to recognize at night: headlights don’t reveal depth, and a road that looks merely wet can be washed out underneath. Six inches of moving water can knock you down; twelve inches can carry away a car.
If water is entering your home: stay out of standing water where electricity may be present, avoid the basement until the water recedes and power is confirmed off, and photograph everything before cleanup begins — documentation matters for insurance. Then call a local restoration contractor. Water left sitting doesn’t dry on its own — it starts a second wave of damage within a day.
Rural routes through Fayette County are the highest risk after dark: low-water crossings over small creeks flood first and have no lighting. Stay put unless travel is essential.
What this means for restoration teams
This warning sits over the Xenia–Beavercreek–Bellbrook corridor with up to 2.5 inches of rain already down — a classic interior water intrusion profile. Expect finished-basement flooding in newer subdivisions where sump systems get overwhelmed, saturated drywall and insulation wicking upward, and sewage backup calls in low-lying areas as stormwater surcharges sanitary lines.
The nighttime timing is a double edge: homeowners asleep won’t discover intrusion until morning — and FEMA and the EPA note mold can begin growing within 24–48 hours on wet organic material. Damage discovered in the morning will have been sitting for hours.
The play tonight: stage equipment now — extraction, dehumidification, air movement — and keep an on-call rotation through the morning. Capture address, water source, and affected areas on the first call.
Field discipline: photo-document before any mitigation begins, moisture-map every affected room (not just the standing-water room), and keep the homeowner’s payment responsibility clear in writing before work starts. Triage actively-wetting jobs first, and separate suspected sewage backups at intake — different category, different protocol.
FEMA & federal assistance
If the flooding turns out to be widespread, residents may eventually have access to federal assistance. The FEMA Helpline is 1-800-621-3362 (7 a.m.–10 p.m. local, 7 days a week). You can also apply at DisasterAssistance.gov, through the FEMA app, or visit fema.gov/drc for recovery centers if one is stood up in the area.
Basic eligibility: citizenship or qualified immigration status, identity verification, proof of occupancy or ownership, and unmet needs not covered by insurance. Apply as soon as it’s safe — but first, file with your insurer and document everything.
Looking ahead
The warning expires at 11:30 PM EDT. The alert notes up to another inch of rain is possible in the warned area, and creeks and streams can crest hours after the rain stops. Low-water crossings in rural Fayette County may stay dangerous well into the morning.
The next NWS update will land if the warning is extended, upgraded, or replaced — check weather.gov/iln before driving in the morning.
Sources & how to verify
- NWS alert: Flash Flood Warning, NWS Wilmington OH (API)
- Issuing office: NWS Wilmington, Ohio — weather.gov/iln
To verify for your own county or ZIP code: go to weather.gov and enter your location, or pull the active alerts for Ohio from the NWS alerts page for the Wilmington office.
This post is for informational purposes and is not an official weather warning. Always follow instructions from local authorities and the National Weather Service.
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