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Flood in King William County, Virginia
23 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.
King William County, Virginia, has 23 flood events in the NCEI record since 1950, with at least one in 11 different years.
July is the busiest month, with 6 of the recorded events. The last 20 years account for 18 events against 5 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 0.3% of the 8,165 flood events recorded in Virginia; its 8.4 per 100 square miles compares with 20.7 statewide.
Compared with Virginia
| Measure | King William County | Virginia | US |
|---|---|---|---|
| Flood events since 1950 | 23 | 8,165 | 183,559 |
| Per 100 square miles | 8.4 | 20.7 | 5.2 |
| Per 10,000 residents | 12.7 | 9.4 | 5.5 |
| Deaths recorded | 0 | 64 | 2,961 |
| Busiest month | July | September | June |
By year
Seasonality
0Feb
0Mar
1Apr
0May
3Jun
4Jul
6Aug
6Sep
2Oct
1Nov
0Dec
0
Recorded events
All 23 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 |
|---|---|---|---|---|---|---|---|
| 19 Jul 2025 | Flash Flood | — | — | — | — | — | County |
| 19 Jul 2025 | Flash Flood | — | — | — | — | — | County |
| 12 Jul 2025 | Flash Flood | — | — | — | — | — | County |
| 9 Jul 2025 | Flash Flood | — | — | — | — | — | County |
| 17 Mar 2025 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 17 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 10 Sep 2023 | Flash Flood | — | — | — | — | — | County |
| 16 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 12 Oct 2018 | Flood | — | — | — | — | — | County |
| 5 Jun 2018 | Flood | — | — | — | — | — | County |
| 3 Jun 2018 | Flood | — | — | — | — | — | County |
| 19 May 2018 | Flood | — | — | — | — | — | County |
| 19 May 2018 | Flood | — | — | — | — | — | County |
| 18 May 2018 | Flood | — | — | — | — | — | County |
| 18 Jul 2015 | Flood | — | — | — | — | — | County |
| 7 Jun 2013 | Flash Flood | — | — | — | — | — | County |
| 27 Aug 2011 | Flood | — | — | — | — | — | County |
| 30 Aug 2004 | Flash Flood | — | $1.0M | — | — | — | County |
| 1 Aug 2004 | Flash Flood | — | — | — | — | — | County |
| 1 Jun 2001 | Flash Flood | — | — | — | — | — | County |
| 16 Sep 1999 | Flash Flood | — | $275K | — | — | — | County |
| 27 Aug 1996 | Flash Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has King William County had?
23 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 King William County?
19 Jul 2025 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in King William County?
The flash flood of 30 Aug 2004, with property damage estimated by NCEI at $1.0M.
How does King William County compare with Virginia for flood?
8.4 events per 100 square miles against 20.7 statewide; the county holds 23 of the state's 8,165 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.