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Flood in Grayson County, Virginia
53 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.
Grayson County, Virginia, has 53 flood events in the NCEI record since 1950, with at least one in 17 different years.
May is the busiest month, with 16 of the recorded events. The last 20 years account for 42 events against 11 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 0.6% of the 8,165 flood events recorded in Virginia; its 12.0 per 100 square miles compares with 20.7 statewide.
NCEI attributes 1 death in the county to floods and flash floods.
Compared with Virginia
| Measure | Grayson County | Virginia | US |
|---|---|---|---|
| Flood events since 1950 | 53 | 8,165 | 183,559 |
| Per 100 square miles | 12.0 | 20.7 | 5.2 |
| Per 10,000 residents | 34.5 | 9.4 | 5.5 |
| Deaths recorded | 1 | 64 | 2,961 |
| Busiest month | May | September | June |
By year
Seasonality
3Feb
0Mar
1Apr
5May
16Jun
7Jul
5Aug
3Sep
8Oct
2Nov
1Dec
2
Recorded events
All 53 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 |
|---|---|---|---|---|---|---|---|
| 27 Sep 2024 | Flash Flood | — | — | — | — | — | County |
| 27 Sep 2024 | Flash Flood | — | $23M | $38M | 1 | — | County |
| 26 Sep 2024 | Flood | — | $2.0M | — | — | — | County |
| 26 Sep 2024 | Flood | — | $500K | — | — | — | County |
| 26 Sep 2024 | Flash Flood | — | — | — | — | — | County |
| 26 Sep 2024 | Flash Flood | — | — | — | — | — | County |
| 22 May 2024 | Flash Flood | — | — | — | — | — | County |
| 22 May 2024 | Flash Flood | — | — | — | — | — | County |
| 22 May 2024 | Flash Flood | — | — | — | — | — | County |
| 22 May 2024 | Flash Flood | — | $25K | — | — | — | County |
| 22 May 2024 | Flash Flood | — | $15K | — | — | — | County |
| 22 May 2024 | Flash Flood | — | $25K | — | — | — | County |
| 9 Jun 2021 | Flood | — | — | — | — | — | County |
| 15 Aug 2020 | Flood | — | — | — | — | — | County |
| 22 Jul 2020 | Flood | — | $25K | — | — | — | County |
| 21 May 2020 | Flood | — | $25K | — | — | — | County |
| 13 Apr 2020 | Flood | — | $186K | — | — | — | County |
| 6 Jul 2019 | Flash Flood | — | — | — | — | — | County |
| 21 Dec 2018 | Flood | — | — | — | — | — | County |
| 11 Oct 2018 | Flash Flood | — | — | — | — | — | County |
| 10 Oct 2018 | Flash Flood | — | — | — | — | — | County |
| 17 Sep 2018 | Flood | — | — | — | — | — | County |
| 16 Sep 2018 | Flash Flood | — | $34K | — | — | — | County |
| 15 May 2018 | Flash Flood | — | — | — | — | — | County |
| 15 Jun 2017 | Flash Flood | — | $2K | — | — | — | County |
| 24 May 2017 | Flood | — | $150K | — | — | — | County |
| 20 May 2017 | Flash Flood | — | — | — | — | — | County |
| 24 Apr 2017 | Flood | — | — | — | — | — | County |
| 11 May 2015 | Flash Flood | — | — | — | — | — | County |
| 19 Apr 2015 | Flash Flood | — | — | — | — | — | County |
| 12 Jul 2013 | Flash Flood | — | $5K | — | — | — | County |
| 30 Jan 2013 | Flash Flood | — | — | — | — | — | County |
| 26 May 2011 | Flash Flood | — | — | — | — | — | County |
| 13 May 2011 | Flash Flood | — | $25K | — | — | — | County |
| 13 May 2011 | Flash Flood | — | — | — | — | — | County |
| 13 May 2011 | Flash Flood | — | $60K | — | — | — | County |
| 6 Mar 2011 | Flood | — | — | — | — | — | County |
| 1 Dec 2010 | Flash Flood | — | $10K | — | — | — | County |
| 17 Aug 2010 | Flash Flood | — | $2K | — | — | — | County |
| 17 Aug 2010 | Flash Flood | — | — | — | — | — | County |
| 16 May 2010 | Flash Flood | — | $300K | — | — | — | County |
| 29 Apr 2009 | Flash Flood | — | — | — | — | — | County |
| 25 Jun 2006 | Flash Flood | — | $5K | — | — | — | County |
| 16 Jul 2005 | Flash Flood | — | — | — | — | — | County |
| 19 Nov 2003 | Flood | — | $25K | — | — | — | Forecast zone |
| 18 Jun 2003 | Flash Flood | — | — | — | — | — | County |
| 18 Jun 2003 | Flash Flood | — | — | — | — | — | County |
| 17 Apr 2002 | Flash Flood | — | — | — | — | — | County |
| 29 Jul 2001 | Flash Flood | — | — | — | — | — | County |
| 25 Jun 2001 | Flash Flood | — | — | — | — | — | County |
| 25 Jun 2001 | Flash Flood | — | — | — | — | — | County |
| 19 Jan 1996 | Flood | — | — | — | — | — | Forecast zone |
| 19 Jan 1996 | Flash Flood | — | $250K | — | — | — | County |
Questions and answers
How many flood events has Grayson County had?
53 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 Grayson County?
27 Sep 2024 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Grayson County?
The flash flood of 27 Sep 2024, with property damage estimated by NCEI at $23M and crop damage at $38M; 1 death recorded.
How does Grayson County compare with Virginia for flood?
12.0 events per 100 square miles against 20.7 statewide; the county holds 53 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.