National Weather ServiceOhioFlash Flood WarningArchive to October 1, 2026
Flash Flood Warnings in Ohio
The National Weather Service issued 115 flash flood warnings for Ohio in 2025 and 73 a year on average in 2008-2025; in 2021-2025 it had the 25th most of any state. 2026 through September: 261, 270% above the average of 71 for those months in 2008-2025. Washington was covered most often (123 times since 2008).
How many flash flood warnings does Ohio get?
Every flash flood warning that covered part of Ohio. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 261 |
| 2025 | 115 |
| 2024 | 63 |
| 2023 | 52 |
| 2022 | 60 |
| 2021 | 82 |
| 2020 | 76 |
| 2019 | 124 |
| 2018 | 71 |
| 2017 | 130 |
| 2016 | 56 |
| 2015 | 65 |
| 2014 | 49 |
| 2013 | 90 |
| 2012 | 38 |
| 2011 | 104 |
| 2010 | 62 |
| 2009 | 34 |
| 2008 | 34 |
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
When in the year does Ohio get them?
Sum of 2008-2025; the busiest month is labelled.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
Where in Ohio?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Washington | 123 | 52 | September 21, 2026 |
| Athens | 104 | 51 | September 21, 2026 |
| Gallia | 99 | 44 | September 23, 2026 |
| Meigs | 93 | 45 | September 21, 2026 |
| Hamilton | 89 | 18 | August 11, 2026 |
| Lawrence | 89 | 37 | September 23, 2026 |
| Jackson | 82 | 31 | September 21, 2026 |
| Vinton | 79 | 32 | September 21, 2026 |
| Morgan | 75 | 31 | September 21, 2026 |
| Brown | 67 | 12 | August 11, 2026 |
| Butler | 66 | 14 | August 12, 2026 |
| Perry | 66 | 29 | September 21, 2026 |
The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
The latest flash flood warnings for Ohio in AreaZine's record
NWS CharlestonWarningSeptember 23, 2026
Flash Flood Warning: Gallia and Mason, OH and WV
Expired 2:15 p.m. EDT, September 23, 2026
NWS CharlestonWarningSeptember 23, 2026
Flash Flood Warning: Lawrence and Wayne, OH and WV
Expired 2:00 p.m. EDT, September 23, 2026
NWS CharlestonWarningSeptember 21, 2026
Flash Flood Warning: Washington County, Pleasants, Ritchie and 1 more, OH and WV
Expired 7:30 a.m. EDT, September 21, 2026
NWS PittsburghWarningSeptember 21, 2026
Flash Flood Warning: Muskingum, OH
Expired 5:00 a.m. EDT, September 21, 2026
NWS CharlestonWarningSeptember 21, 2026
Flash Flood Warning: Athens, Morgan, Perry and 2 more, OH and WV
Expired 5:15 a.m. EDT, September 21, 2026
NWS CharlestonWarningSeptember 21, 2026
Flash Flood Warning: Morgan and Perry, OH
Expired 3:00 a.m. EDT, September 21, 2026
NWS CharlestonWarningSeptember 20, 2026
Flash Flood Warning: Meigs, Jackson, Wirt and 1 more, OH and WV
Expired 4:30 a.m. EDT, September 21, 2026
NWS CharlestonWarningSeptember 20, 2026
Flash Flood Warning: Gallia, Jackson and Vinton, OH
Expired 5:30 a.m. EDT, September 21, 2026
This list is AreaZine's record of the NWS alert feed, kept since April 6, 2026; the counts above come from the complete IEM archive.
Source: National Weather Service alerts (api.weather.gov).
What is a flash flood warning?
A flash flood warning means flash flooding is happening or about to happen: water rising fast in streams, streets or dry washes, usually within six hours of heavy rain or a dam or levee failure. A warning means the hazard is happening, about to happen, or very likely: act now to protect people and property. The national record · Every warning type in Ohio.