States › Utah › Carbon County › Flood
Flood in Carbon County, Utah
19 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.
Carbon County, Utah, has 19 flood events in the NCEI record since 1950, with at least one in 13 different years.
July is the busiest month, with 7 of the recorded events. The last 20 years account for 15 events against 4 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.4% of the 1,399 flood events recorded in Utah; its 1.3 per 100 square miles compares with 1.7 statewide.
NCEI attributes 2 deaths in the county to floods and flash floods.
Compared with Utah
| Measure | Carbon County | Utah | US |
|---|---|---|---|
| Flood events since 1950 | 19 | 1,399 | 183,559 |
| Per 100 square miles | 1.3 | 1.7 | 5.2 |
| Per 10,000 residents | 9.3 | 4.2 | 5.5 |
| Deaths recorded | 2 | 49 | 2,961 |
| Busiest month | July | August | June |
By year
Seasonality
0Feb
0Mar
0Apr
0May
0Jun
3Jul
7Aug
2Sep
6Oct
1Nov
0Dec
0
Recorded events
All 19 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 |
|---|---|---|---|---|---|---|---|
| 4 Aug 2024 | Flash Flood | — | $1K | — | — | — | County |
| 21 Jun 2024 | Flash Flood | — | — | — | — | — | County |
| 19 Jun 2022 | Flash Flood | — | — | — | — | — | County |
| 6 Oct 2021 | Flash Flood | — | — | — | — | — | County |
| 11 Sep 2021 | Flash Flood | — | — | — | — | — | County |
| 21 Jul 2017 | Flash Flood | — | — | — | — | — | County |
| 22 Sep 2016 | Flash Flood | — | $4.0M | — | — | — | County |
| 3 Sep 2016 | Flash Flood | — | — | — | — | — | County |
| 27 Sep 2014 | Flash Flood | — | $1.1M | — | — | — | County |
| 4 Aug 2014 | Flash Flood | — | $2.8M | — | — | — | County |
| 15 Jul 2014 | Flash Flood | — | $5K | — | — | — | County |
| 14 Jul 2014 | Flash Flood | — | — | — | — | — | County |
| 16 Jul 2013 | Flash Flood | — | — | — | — | — | County |
| 19 Jul 2011 | Flash Flood | — | — | — | — | — | County |
| 31 Jul 2010 | Flash Flood | — | — | — | — | — | County |
| 30 Jul 2006 | Flash Flood | — | — | — | 2 | 1 | County |
| 12 Sep 2002 | Flash Flood | — | $500K | — | — | — | County |
| 10 Jun 1997 | Flood | — | — | — | — | — | County |
| 13 Sep 1996 | Flash Flood | — | $100K | — | — | — | County |
Questions and answers
How many flood events has Carbon County had?
19 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 Carbon County?
4 Aug 2024 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Carbon County?
The flash flood of 22 Sep 2016, with property damage estimated by NCEI at $4.0M.
How does Carbon County compare with Utah for flood?
1.3 events per 100 square miles against 1.7 statewide; the county holds 19 of the state's 1,399 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.