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Flood in Knox County, Nebraska
41 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 41 flood events in Knox County, Nebraska, between 1950 and 2026, spread over 16 years.
June is the busiest month, with 11 of the recorded events. The last 20 years account for 29 events against 12 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.7% of the 2,363 flood events recorded in Nebraska; its 3.7 per 100 square miles compares with 3.1 statewide.
Compared with Nebraska
| Measure | Knox County | Nebraska | US |
|---|---|---|---|
| Flood events since 1950 | 41 | 2,363 | 183,559 |
| Per 100 square miles | 3.7 | 3.1 | 5.2 |
| Per 10,000 residents | 48.8 | 12.0 | 5.5 |
| Deaths recorded | 0 | 13 | 2,961 |
| Busiest month | June | June | June |
By year
Seasonality
0Feb
3Mar
8Apr
0May
5Jun
11Jul
7Aug
4Sep
3Oct
0Nov
0Dec
0
Recorded events
All 41 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 |
|---|---|---|---|---|---|---|---|
| 21 Jun 2024 | Flood | — | $10K | $10K | — | — | County |
| 31 Aug 2021 | Flash Flood | — | — | — | — | — | County |
| 13 Mar 2019 | Flood | — | — | — | — | — | County |
| 13 Mar 2019 | Flood | — | — | — | — | — | County |
| 13 Mar 2019 | Flood | — | — | — | — | — | County |
| 13 Mar 2019 | Flood | — | $1.2M | — | — | — | County |
| 15 Aug 2017 | Flash Flood | — | $30K | $10K | — | — | County |
| 14 Feb 2017 | Flood | — | — | — | — | — | County |
| 21 Aug 2013 | Flash Flood | — | — | — | — | — | County |
| 1 Sep 2011 | Flood | — | $5K | — | — | — | County |
| 1 Aug 2011 | Flood | — | $50K | — | — | — | County |
| 1 Jul 2011 | Flood | — | $50K | — | — | — | County |
| 1 Jun 2011 | Flood | — | $150K | — | — | — | County |
| 26 May 2011 | Flood | — | $25K | — | — | — | County |
| 12 Mar 2011 | Flood | — | — | — | — | — | County |
| 23 Sep 2010 | Flash Flood | — | $2K | — | — | — | County |
| 22 Sep 2010 | Flash Flood | — | $10K | — | — | — | County |
| 22 Jul 2010 | Flood | — | $15K | — | — | — | County |
| 22 Jul 2010 | Flash Flood | — | $15K | — | — | — | County |
| 22 Jul 2010 | Flood | — | $35K | — | — | — | County |
| 22 Jul 2010 | Flood | — | $10K | — | — | — | County |
| 22 Jul 2010 | Flash Flood | — | $20K | — | — | — | County |
| 22 Jun 2010 | Flash Flood | — | $2K | — | — | — | County |
| 11 Jun 2010 | Flood | — | $15K | — | — | — | County |
| 6 Jun 2008 | Flood | — | — | — | — | — | County |
| 29 May 2008 | Flash Flood | — | — | — | — | — | County |
| 29 May 2008 | Flood | — | — | — | — | — | County |
| 10 Mar 2007 | Flood | — | — | — | — | — | County |
| 21 Feb 2007 | Flood | — | — | — | — | — | County |
| 28 Jun 2005 | Flash Flood | — | — | — | — | — | County |
| 20 Jun 2005 | Flash Flood | — | — | — | — | — | County |
| 20 Jun 2005 | Flash Flood | — | — | — | — | — | County |
| 5 Jun 2005 | Flash Flood | — | — | — | — | — | County |
| 29 May 2004 | Flash Flood | — | — | — | — | — | County |
| 24 Jun 2003 | Flash Flood | — | — | — | — | — | County |
| 19 Mar 2001 | Flood | — | — | — | — | — | Forecast zone |
| 15 Mar 2001 | Flood | — | — | — | — | — | Forecast zone |
| 21 Jul 1999 | Flash Flood | — | — | — | — | — | County |
| 5 May 1999 | Flood | — | — | — | — | — | Forecast zone |
| 18 Feb 1997 | Flood | — | — | — | — | — | Forecast zone |
| 14 Jun 1996 | Flash Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Knox County had?
41 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 Knox County?
21 Jun 2024 (Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Knox County?
The flood of 13 Mar 2019, with property damage estimated by NCEI at $1.2M.
How does Knox County compare with Nebraska for flood?
3.7 events per 100 square miles against 3.1 statewide; the county holds 41 of the state's 2,363 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.