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Flood in Larimer County, Colorado
80 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.
Larimer County, Colorado, has 80 flood events in the NCEI record since 1950, with at least one in 20 different years.
July is the busiest month, with 34 of the recorded events. The last 20 years account for 67 events against 13 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 4.1% of the 1,956 flood events recorded in Colorado; its 3.1 per 100 square miles compares with 1.9 statewide.
NCEI attributes 13 deaths in the county to floods and flash floods.
Compared with Colorado
| Measure | Larimer County | Colorado | US |
|---|---|---|---|
| Flood events since 1950 | 80 | 1,956 | 183,559 |
| Per 100 square miles | 3.1 | 1.9 | 5.2 |
| Per 10,000 residents | 2.2 | 3.4 | 5.5 |
| Deaths recorded | 13 | 47 | 2,961 |
| Busiest month | July | July | June |
By year
Seasonality
0Feb
0Mar
0Apr
0May
3Jun
12Jul
34Aug
12Sep
19Oct
0Nov
0Dec
0
Recorded events
All 80 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 |
|---|---|---|---|---|---|---|---|
| 7 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 14 Sep 2023 | Flash Flood | — | $15K | $5K | — | — | County |
| 1 Aug 2023 | Flash Flood | — | $25K | $10K | — | — | County |
| 31 Jul 2023 | Flash Flood | — | $10K | $5K | — | — | County |
| 31 Jul 2023 | Flash Flood | — | $250K | $25K | — | — | County |
| 20 Jul 2023 | Flash Flood | — | $10K | $5K | — | — | County |
| 11 Jun 2023 | Flash Flood | — | $50K | — | — | — | County |
| 11 Jun 2023 | Flash Flood | — | $5K | — | — | — | County |
| 11 Jun 2023 | Flash Flood | — | $5K | — | — | — | County |
| 15 Aug 2022 | Flash Flood | — | $25K | $10K | — | — | County |
| 5 Aug 2022 | Flash Flood | — | $15K | $5K | — | — | County |
| 31 Jul 2022 | Flash Flood | — | $5K | — | — | — | County |
| 24 Jul 2022 | Flash Flood | — | $15K | $10K | — | — | County |
| 15 Jul 2022 | Flash Flood | — | $250K | $100K | 2 | — | County |
| 7 Jul 2022 | Flash Flood | — | $10K | $5K | — | — | County |
| 20 Aug 2021 | Flash Flood | — | $10K | — | — | — | County |
| 17 Aug 2021 | Flash Flood | — | $10K | — | — | — | County |
| 3 Aug 2021 | Flash Flood | — | $15K | — | — | — | County |
| 31 Jul 2021 | Flash Flood | — | $10K | — | — | — | County |
| 31 Jul 2021 | Flash Flood | — | $10K | — | — | — | County |
| 31 Jul 2021 | Flash Flood | — | $10K | — | — | — | County |
| 30 Jul 2021 | Flash Flood | — | $5K | — | — | — | County |
| 30 Jul 2021 | Flash Flood | — | $25K | — | — | — | County |
| 30 Jul 2021 | Flash Flood | — | $5K | — | — | — | County |
| 20 Jul 2021 | Flash Flood | — | $500K | — | 4 | — | County |
| 5 Jul 2021 | Flash Flood | — | $5K | — | — | — | County |
| 4 Jul 2021 | Flash Flood | — | $10K | — | — | — | County |
| 1 Jul 2021 | Flash Flood | — | $10K | — | — | — | County |
| 25 Jun 2021 | Flash Flood | — | $10K | $5K | — | — | County |
| 11 Jun 2015 | Flash Flood | — | $10K | — | — | — | County |
| 4 Jun 2015 | Flash Flood | — | $15K | $10K | — | — | County |
| 9 May 2015 | Flood | — | $100K | $10K | — | — | County |
| 29 Jul 2014 | Flash Flood | — | $25K | $50K | — | — | County |
| 29 Jul 2014 | Flash Flood | — | $10K | $20K | — | — | County |
| 14 Jul 2014 | Flash Flood | — | $10K | $10K | — | — | County |
| 13 Jul 2014 | Flash Flood | — | $10K | $5K | — | — | County |
| 24 Jun 2014 | Flash Flood | — | $10K | $5K | — | — | County |
| 23 May 2014 | Flash Flood | — | $10K | — | — | — | County |
| 23 May 2014 | Flash Flood | — | $15K | — | — | — | County |
| 14 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 12 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 12 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 12 Sep 2013 | Flood | — | $109M | — | — | — | County |
| 12 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 12 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 12 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 12 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 12 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 12 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 12 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 12 Sep 2013 | Flash Flood | — | — | — | 2 | — | County |
| 12 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 11 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 11 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 6 Sep 2013 | Flash Flood | — | $5K | $5K | — | — | County |
| 25 Jul 2013 | Flash Flood | — | — | — | — | — | County |
| 18 Jul 2013 | Flash Flood | — | $10K | $5K | — | — | County |
| 18 Jul 2013 | Flash Flood | — | $10K | $5K | — | — | County |
| 12 Jul 2013 | Flash Flood | — | $10K | $10K | — | — | County |
| 5 Jul 2013 | Flash Flood | — | $25K | — | — | — | County |
| 27 Jul 2012 | Flash Flood | — | $15K | $10K | — | — | County |
| 16 Jul 2012 | Flash Flood | — | $15K | $10K | — | — | County |
| 7 Jul 2012 | Flash Flood | — | $10K | $25K | — | — | County |
| 6 Jul 2012 | Flash Flood | — | $20K | $20K | — | — | County |
| 4 Jul 2010 | Flash Flood | — | $10K | $5K | — | — | County |
| 22 Jun 2009 | Flash Flood | — | $10K | $50K | — | — | County |
| 2 Aug 2007 | Flash Flood | — | $20K | — | — | — | County |
| 3 Jun 2005 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2004 | Flash Flood | — | — | — | — | — | County |
| 18 Jun 2003 | Flash Flood | — | — | — | — | — | County |
| 12 Jul 2001 | Flash Flood | — | — | — | — | — | County |
| 16 Aug 2000 | Flash Flood | — | — | — | — | — | County |
| 4 Aug 1999 | Flood | — | — | — | — | — | County |
| 1 Sep 1998 | Flash Flood | — | — | — | — | — | County |
| 4 Aug 1997 | Flash Flood | — | — | — | — | — | County |
| 28 Jul 1997 | Flash Flood | — | $190M | — | 5 | 40 | County |
| 28 Jul 1997 | Flood | — | — | — | — | — | County |
| 13 Jun 1997 | Flood | — | — | — | — | — | County |
| 2 Jun 1997 | Flash Flood | — | $500K | — | — | — | County |
| 14 Sep 1996 | Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Larimer County had?
80 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 Larimer County?
7 Aug 2024 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Larimer County?
The flash flood of 28 Jul 1997, with property damage estimated by NCEI at $190M; 5 deaths recorded.
How does Larimer County compare with Colorado for flood?
3.1 events per 100 square miles against 1.9 statewide; the county holds 80 of the state's 1,956 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.