National Weather ServiceOhioFlood WarningArchive to October 1, 2026
Flood Warnings in Ohio
The National Weather Service issued 171 flood warnings for Ohio in 2025 and 217 a year on average in 2008-2025; in 2021-2025 it had the 11th most of any state. 2026 through September: 309, 61% above the average of 192 for those months in 2008-2025. Defiance was covered most often (285 times since 2008).
How many flood warnings does Ohio get?
Every flood warning that covered part of Ohio. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 309 |
| 2025 | 171 |
| 2024 | 171 |
| 2023 | 110 |
| 2022 | 215 |
| 2021 | 125 |
| 2020 | 222 |
| 2019 | 358 |
| 2018 | 389 |
| 2017 | 297 |
| 2016 | 58 |
| 2015 | 257 |
| 2014 | 215 |
| 2013 | 238 |
| 2012 | 74 |
| 2011 | 535 |
| 2010 | 88 |
| 2009 | 95 |
| 2008 | 284 |
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 |
|---|---|---|---|
| Defiance | 285 | 29 | April 28, 2026 |
| Washington | 271 | 94 | September 21, 2026 |
| Trumbull | 247 | 35 | May 10, 2026 |
| Hamilton | 210 | 42 | September 20, 2026 |
| Marion | 204 | 15 | August 21, 2026 |
| Williams | 192 | 25 | July 18, 2026 |
| Wood | 190 | 20 | April 2, 2026 |
| Meigs | 165 | 53 | September 21, 2026 |
| Putnam | 150 | 11 | August 16, 2026 |
| Gallia | 142 | 46 | September 23, 2026 |
| Paulding | 137 | 10 | August 16, 2026 |
| Lorain | 137 | 13 | April 1, 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 flood warnings for Ohio in AreaZine's record
NWS CharlestonWarningSeptember 23, 2026
Flood Warning: Gallia and Vinton, OH
Expired 3:00 p.m. EDT, September 24, 2026
NWS CharlestonWarningSeptember 23, 2026
Flood Warning: Gallia, Cabell and Mason, OH and WV
Expired 5:00 p.m. EDT, September 23, 2026
NWS CharlestonWarningSeptember 22, 2026
Flood Warning: Athens, OH
Expired 4:00 a.m. EDT, September 23, 2026
NWS WilmingtonWarningSeptember 22, 2026
Flood Warning: Pike and Scioto, OH
Expired 1:00 p.m. EDT, September 23, 2026
NWS CharlestonWarningSeptember 21, 2026
Flood Warning: Washington County, OH
Expired 6:45 p.m. EDT, September 21, 2026
NWS CharlestonWarningSeptember 21, 2026
Flood Warning: Washington County, OH
Expired 6:00 p.m. EDT, September 21, 2026
NWS PittsburghWarningSeptember 21, 2026
Flood Warning: Monroe and Noble, OH
Expired 5:00 p.m. EDT, September 21, 2026
NWS CharlestonWarningSeptember 21, 2026
Flood Warning: Athens, OH
Expired 1:00 p.m. EDT, September 22, 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 flood warning?
A flood warning means flooding is happening or about to happen. The NWS issues it both for rivers at forecast points (river flood warnings) and for areas where water ponds or runs off (areal flood warnings); AreaZine counts both. 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.