National Weather ServiceOhioFlash Flood WatchArchive to October 1, 2026
Flash Flood Watches in Ohio
The National Weather Service issued 0 flash flood watches for Ohio in 2025 and 19 a year on average in 2008-2025; in 2021-2025 it had the 31st most of any state. 2026 through September: 0, 100% below the average of 18 for those months in 2008-2025. Gallia was covered most often (103 times since 2008).
How many flash flood watches does Ohio get?
Every flash flood watch that covered part of Ohio. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 0 |
| 2025 | 0 |
| 2024 | 0 |
| 2023 | 0 |
| 2022 | 0 |
| 2021 | 19 |
| 2020 | 20 |
| 2019 | 16 |
| 2018 | 25 |
| 2017 | 33 |
| 2016 | 25 |
| 2015 | 36 |
| 2014 | 30 |
| 2013 | 32 |
| 2012 | 19 |
| 2011 | 30 |
| 2010 | 30 |
| 2009 | 21 |
| 2008 | 8 |
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 |
|---|---|---|---|
| Gallia | 103 | 0 | September 15, 2021 |
| Lawrence | 98 | 0 | September 15, 2021 |
| Meigs | 98 | 0 | August 31, 2021 |
| Jackson | 93 | 0 | August 31, 2021 |
| Washington | 93 | 0 | August 31, 2021 |
| Athens | 92 | 0 | August 31, 2021 |
| Vinton | 88 | 0 | August 31, 2021 |
| Morgan | 87 | 0 | August 31, 2021 |
| Perry | 81 | 0 | August 31, 2021 |
| Clermont | 75 | 0 | August 30, 2021 |
| Hamilton | 71 | 0 | August 30, 2021 |
| Adams | 69 | 0 | August 30, 2021 |
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.
What is a flash flood watch?
A flash flood watch means the rain or conditions that lead to flash flooding are possible in the coming hours. Since 2022 most NWS offices issue a flood watch in its place: the national count fell from 692 in 2021 to 76 in 2022, while flood watches rose from 203 to 715 (IEM archive), so compare the two together. A watch means the conditions for the hazard are possible or favourable, but it is not yet happening: be ready to act if a warning follows. The national record · Every warning type in Ohio.