Flash Flood Warning — Greene County, Ohio
Flooding is imminent or already occurring. Move to higher ground immediately — never drive through flooded roads.
Current Status
🌊 Active: Flash Flood Warning
Flash Flood Warning issued August 20 at 1:24AM EDT until August 20 at 4:15AM EDT by NWS Wilmington OH
FFWILN The National Weather Service in Wilmington has issued a * Flash Flood Warning for... Southwestern Greene County in west central Ohio... Southern Montgomery County in west central Ohio... * Until 415 AM EDT. * At 124 AM EDT, radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 2 and 3.5 inches of rain have fallen. Additional rainfall amounts of 0.5 to 1.5 inches are possible. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar and automated gauges. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that may experience flash flooding include... Dayton, Kettering, Beavercreek, Trotwood, Miamisburg, Springboro, Bellbrook, Moraine, Carlisle, Oakwood, West Carrollton, Riverside, Germantown, New Lebanon, Farmersville, Spring Valley, Centerv
Effective August 20, 2026 at 1:24 AM ET · Expires August 20, 2026 at 4:15 AM ET
Event Details
Event Type
Flash Flood Warning
Severity
severe
Issued By
NWS Wilmington OH
Expires
August 20, 2026 at 4:15 AM ET
Last Checked
2 minutes ago
What To Do
📋 Official NWS Guidance
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 our website at weather.gov/iln and submit your report via social media, when you can do so safely.
Also In Effect For
This same Flash Flood Warning also covers:
Other Active Alerts in Ohio
Flash Flood Warning
Flood Advisory
Flood Advisory
Flood Advisory
Flash Flood Warning
Flood Warning
Get Flash Flood Warning Alerts for Greene County
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Frequently Asked Questions
What does a Flash Flood Warning mean for Greene County, Ohio?
Flooding is imminent or already occurring. Move to higher ground immediately — never drive through flooded roads.
Is this Flash Flood Warning currently active?
Yes — this alert is active as of our last check (2 minutes ago). It's set to expire August 20, 2026 at 4:15 AM ET.
How do I get notified about Flash Flood Warning alerts for Greene County?
Download StormCast free on Google Play and set Greene County, Ohio as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
What other areas does this alert cover?
This same Flash Flood Warning is also in effect for Montgomery County.