National Weather ServiceDistrict of ColumbiaFlash Flood WarningArchive to October 1, 2026
Flash Flood Warnings in District of Columbia
The National Weather Service issued 9 flash flood warnings for District of Columbia in 2025 and 6 a year on average in 2008-2025; in 2021-2025 it had the 49th most of any state. 2026 through September: 3, 49% below the average of 6 for those months in 2008-2025. District of Columbia was covered most often (110 times since 2008).
How many flash flood warnings does District of Columbia get?
Every flash flood warning that covered part of District of Columbia. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 3 |
| 2025 | 9 |
| 2024 | 2 |
| 2023 | 5 |
| 2022 | 8 |
| 2021 | 11 |
| 2020 | 8 |
| 2019 | 3 |
| 2018 | 4 |
| 2017 | 5 |
| 2016 | 3 |
| 2015 | 8 |
| 2014 | 4 |
| 2013 | 7 |
| 2012 | 7 |
| 2011 | 9 |
| 2010 | 7 |
| 2009 | 4 |
| 2008 | 3 |
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 District of Columbia 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 District of Columbia?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| District of Columbia | 110 | 19 | September 4, 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 District of Columbia in AreaZine's record
NWS Baltimore MD/WashingtonWarningSeptember 4, 2026
Flash Flood Warning: District of Columbia County, Arlington, Fairfax and 2 more, DC and VA
Expired 3:00 a.m. EDT, September 4, 2026
NWS Baltimore MD/WashingtonWarningAugust 2, 2026
Flash Flood Warning: District of Columbia County, Montgomery, Arlington and 5 more, DC and MD
Expired 7:45 p.m. EDT, August 2, 2026
NWS Baltimore MD/WashingtonWarningJuly 28, 2026
Flash Flood Warning: District of Columbia County, Montgomery, Prince Georges and 1 more, DC and MD
Expired 9:30 p.m. EDT, July 28, 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 District of Columbia.