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Flood in Charles County, Maryland
90 floods and flash floods events in the NCEI Storm Events record, 1950 to 2026. Event types counted: Flood, Flash Flood, Coastal Flood, Lakeshore Flood.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. Storm records through 30 Jun 2026.
NCEI records 90 flood events in Charles County, Maryland, between 1950 and 2026, spread over 22 years.
August is the busiest month, with 21 of the recorded events. The last 20 years account for 78 events against 12 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 2.5% of the 3,545 flood events recorded in Maryland; its 19.7 per 100 square miles compares with 36.5 statewide.
Compared with Maryland
| Measure | Charles County | Maryland | US |
|---|---|---|---|
| Flood events since 1950 | 90 | 3,545 | 183,559 |
| Per 100 square miles | 19.7 | 36.5 | 5.2 |
| Per 10,000 residents | 5.3 | 5.8 | 5.5 |
| Deaths recorded | 0 | 24 | 2,961 |
| Busiest month | August | July | June |
By year
Seasonality
3Feb
4Mar
1Apr
0May
7Jun
11Jul
11Aug
21Sep
13Oct
10Nov
7Dec
2
Recorded events
All 90 events, most recent first. Magnitude is hail size, tornado rating or wind speed as recorded.
| Date | Event type | Magnitude | Property damage | Crop damage | Deaths | Injuries | Geography |
|---|---|---|---|---|---|---|---|
| 15 Jun 2025 | Flash Flood | — | — | — | — | — | County |
| 15 Jun 2025 | Flash Flood | — | — | — | — | — | County |
| 15 Jun 2025 | Flash Flood | — | — | — | — | — | County |
| 15 Jun 2025 | Flash Flood | — | — | — | — | — | County |
| 15 Jun 2025 | Flash Flood | — | — | — | — | — | County |
| 9 Jan 2024 | Flood | — | — | — | — | — | County |
| 10 Aug 2022 | Flood | — | — | — | — | — | County |
| 10 Aug 2022 | Flood | — | — | — | — | — | County |
| 23 Sep 2021 | Flood | — | — | — | — | — | County |
| 27 Aug 2021 | Flood | — | — | — | — | — | County |
| 27 Aug 2021 | Flood | — | — | — | — | — | County |
| 27 Aug 2021 | Flood | — | — | — | — | — | County |
| 15 Aug 2021 | Flood | — | — | — | — | — | County |
| 14 Aug 2021 | Flood | — | — | — | — | — | County |
| 11 Jun 2021 | Flash Flood | — | — | — | — | — | County |
| 11 Jun 2021 | Flood | — | — | — | — | — | County |
| 10 Jun 2021 | Flash Flood | — | $5K | — | — | — | County |
| 12 Nov 2020 | Flood | — | — | — | — | — | County |
| 12 Nov 2020 | Flood | — | — | — | — | — | County |
| 12 Nov 2020 | Flood | — | — | — | — | — | County |
| 12 Nov 2020 | Flood | — | — | — | — | — | County |
| 11 Nov 2020 | Flood | — | — | — | — | — | County |
| 30 Oct 2020 | Flood | — | — | — | — | — | County |
| 29 Aug 2020 | Flood | — | — | — | — | — | County |
| 14 Aug 2020 | Flood | — | — | — | — | — | County |
| 13 Aug 2020 | Flash Flood | — | — | — | — | — | County |
| 13 Aug 2020 | Flash Flood | — | — | — | — | — | County |
| 13 Aug 2020 | Flood | — | — | — | — | — | County |
| 4 Aug 2020 | Flood | — | — | — | — | — | County |
| 4 Aug 2020 | Flash Flood | — | — | — | — | — | County |
| 4 Aug 2020 | Flash Flood | — | — | — | — | — | County |
| 7 Jul 2020 | Flood | — | — | — | — | — | County |
| 6 Jul 2020 | Flash Flood | — | $10K | — | — | — | County |
| 6 Jul 2020 | Flood | — | — | — | — | — | County |
| 6 Jul 2020 | Flood | — | — | — | — | — | County |
| 8 Jul 2019 | Flash Flood | — | $50K | — | — | — | County |
| 8 Jul 2019 | Flood | — | — | — | — | — | County |
| 12 Oct 2018 | Flood | — | — | — | — | — | County |
| 12 Oct 2018 | Flood | — | — | — | — | — | County |
| 11 Oct 2018 | Flood | — | — | — | — | — | County |
| 11 Oct 2018 | Flood | — | — | — | — | — | County |
| 11 Oct 2018 | Flood | — | — | — | — | — | County |
| 11 Oct 2018 | Flood | — | — | — | — | — | County |
| 11 Oct 2018 | Flood | — | — | — | — | — | County |
| 22 Jul 2018 | Flood | — | — | — | — | — | County |
| 21 Jul 2018 | Flash Flood | — | — | — | — | — | County |
| 18 May 2018 | Flood | — | — | — | — | — | County |
| 18 May 2018 | Flood | — | — | — | — | — | County |
| 18 May 2018 | Flood | — | — | — | — | — | County |
| 18 May 2018 | Flood | — | — | — | — | — | County |
| 11 Feb 2018 | Flood | — | — | — | — | — | County |
| 21 Aug 2017 | Flash Flood | — | — | — | — | — | County |
| 6 Jul 2017 | Flash Flood | — | — | — | — | — | County |
| 4 Oct 2015 | Coastal Flood | — | — | — | — | — | Forecast zone |
| 27 Jun 2015 | Flash Flood | — | — | — | — | — | County |
| 12 Aug 2014 | Flash Flood | — | — | — | — | — | County |
| 1 May 2014 | Flood | — | — | — | — | — | County |
| 9 Aug 2013 | Flash Flood | — | — | — | — | — | County |
| 8 Dec 2011 | Flood | — | — | — | — | — | County |
| 7 Dec 2011 | Flood | — | — | — | — | — | County |
| 8 Sep 2011 | Flash Flood | — | — | — | — | — | County |
| 8 Sep 2011 | Flash Flood | — | — | — | — | — | County |
| 7 Sep 2011 | Flash Flood | — | — | — | — | — | County |
| 7 Sep 2011 | Flash Flood | — | — | — | — | — | County |
| 7 Sep 2011 | Flash Flood | — | — | — | — | — | County |
| 7 Sep 2011 | Flood | — | — | — | — | — | County |
| 7 Sep 2011 | Flash Flood | — | — | — | — | — | County |
| 7 Sep 2011 | Flash Flood | — | — | — | — | — | County |
| 7 Sep 2011 | Flash Flood | — | — | — | — | — | County |
| 7 Sep 2011 | Flash Flood | — | — | — | — | — | County |
| 13 Jul 2011 | Flash Flood | — | — | — | — | — | County |
| 13 Jul 2011 | Flash Flood | — | — | — | — | — | County |
| 1 Oct 2010 | Coastal Flood | — | — | — | — | — | Forecast zone |
| 30 Sep 2010 | Coastal Flood | — | — | — | — | — | Forecast zone |
| 13 Nov 2009 | Coastal Flood | — | — | — | — | — | Forecast zone |
| 22 Aug 2009 | Flash Flood | — | — | — | — | — | County |
| 11 May 2008 | Coastal Flood | — | $50K | — | — | — | Forecast zone |
| 11 May 2008 | Flood | — | — | — | — | — | County |
| 16 Nov 2006 | Flood | — | — | — | — | — | County |
| 27 Jun 2006 | Flash Flood | — | $50K | — | — | — | County |
| 14 Jan 2005 | Flood | — | — | — | — | — | Forecast zone |
| 17 Jun 2004 | Flash Flood | — | — | — | — | — | County |
| 22 Feb 2003 | Flood | — | — | — | — | — | Forecast zone |
| 30 Aug 2001 | Flash Flood | — | — | — | — | — | County |
| 16 Sep 1999 | Flash Flood | — | — | — | — | — | County |
| 25 Aug 1999 | Flash Flood | — | $200K | — | — | — | County |
| 9 Mar 1998 | Flash Flood | — | — | — | — | — | County |
| 4 Feb 1998 | Coastal Flood | — | $150K | — | — | — | Forecast zone |
| 4 Feb 1998 | Flash Flood | — | $25K | — | — | — | County |
| 28 Jan 1998 | Flash Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Charles County had?
90 events in the NCEI Storm Events record between 1950 and 2026. Reporting of floods and flash floods became far more complete after 1996, so early decades undercount.
When was the last recorded flood event in Charles County?
15 Jun 2025 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Charles County?
The flash flood of 25 Aug 1999, with property damage estimated by NCEI at $200K.
How does Charles County compare with Maryland for flood?
19.7 events per 100 square miles against 36.5 statewide; the county holds 90 of the state's 3,545 recorded events.
Provenance
NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026, public domain. County-recorded events plus zone-recorded events whose forecast zone is named for the county (marked "Forecast zone"). Population and area from the US Census Bureau (2021). Built 1 Oct 2026. See the methodology, the Flood hub and the county page.