45
Recorded events
0
Direct deaths
0
Direct injuries
$7.0M
Property damage
Flash Flood in Washington County, Maryland: 45 recorded events between 1996 and 2024. The strongest on record measured 0. That places the county #703 nationally and #14 statewide for this hazard.
Decade by decade
Flash Flood in Washington County, Maryland: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in Washington County is the 2010s, when 19 of the county's 45 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.
Within the Washington County archive, flash flood makes up 6.9% of all recorded severe weather across 8 hazard types. Nationally the county sits at #703 for this hazard and #14 within Maryland, putting it in the 76.9 percentile of all U.S. counties.
Seasonality
Events by month
Jun is the peak month for flash flood in Washington County with 11 recorded events, while Aug is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Jul 23, 2024 | MAUGANSVILLE | 0 | $0 |
| Jul 23, 2024 | CEARFOSS | 0 | $0 |
| Jul 23, 2024 | BROADFORDING | 0 | $0 |
| Sep 7, 2022 | FOUNTAIN HEAD | 0 | $0 |
| Sep 15, 2021 | EDGEMONT | 0 | $0 |
| May 16, 2018 | AUGUSTA | 0 | $0 |
| May 16, 2018 | DARGAN | 0 | $50K |
| May 16, 2018 | SANDY HOOK | 0 | $0 |
| May 16, 2018 | AUGUSTA | 0 | $0 |
| May 16, 2018 | DARGAN | 0 | $50K |
Other hazards here
More from Washington County
- Thunderstorm Wind 396
- Hail 113
- Flood 60
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
In Hagerstown, several road closures and flooded basements were reported. Saint Clair Avenue and Northern Avenue had high water. Hamilton Run overflowed, flooding a backyard along Brookline Avenue. Route 66 and Mount Edna Road flooded near Boonsboro.
Quick answers
Frequently asked
How many flash flood events are on record in Washington County, Maryland?
45 flash flood events are recorded in Washington County between 1996 and 2024, causing 0 direct deaths.
What is the strongest flash flood recorded in Washington County?
The strongest flash flood on record in Washington County measured 0.
Where does the flash flood data for Washington County come from?
All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.
Cite this page
“Flash Flood in Washington County, Maryland.” Severe Weather History. severeweatherhistory.com/county/maryland/washington-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.