Colorado, 2011
The year's recorded storm events, federal disaster declarations and flood insurance claims.
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.
Events by hazard
Includes events recorded by forecast zone. The state's yearly total for 2011 was 1,611 against 1,756 in 2010.
Counties with the most recorded events
Notable events
| Date | County | Event type | Magnitude | Property damage | Deaths | Injuries |
|---|---|---|---|---|---|---|
| 19 Dec 2011 | Forecast zone | Winter Weather | — | — | 2 | 8 |
| 31 Aug 2011 | Custer | Lightning | — | — | 1 | 1 |
| 19 Dec 2011 | Forecast zone | Winter Weather | — | — | 1 | — |
| 31 Dec 2011 | Forecast zone | High Wind | 81 mph | — | 1 | — |
| 30 Jun 2011 | Forecast zone | Debris Flow | — | — | 1 | — |
| 13 Jul 2011 | Adams | Hail | 4.50 in | $164,800,000 | — | 2 |
| 24 Jul 2011 | El Paso | Lightning | — | — | — | 5 |
| 1 Apr 2011 | Forecast zone | Drought | — | — | — | 3 |
| 26 May 2011 | Forecast zone | Wildfire | — | — | — | 3 |
| 12 Nov 2011 | Forecast zone | High Wind | 82 mph | — | — | 3 |
| 19 Jun 2011 | Yuma | Thunderstorm Wind | 90 mph | $3,400,000 | — | — |
| 9 May 2011 | Forecast zone | Strong Wind | 40 mph | — | — | 2 |
| 29 Jun 2011 | Arapahoe | Lightning | — | — | — | 2 |
| 14 Jul 2011 | Arapahoe | Flash Flood | — | $10,000 | — | 1 |
| 12 Nov 2011 | Forecast zone | High Wind | 52 mph | — | — | 1 |
| 9 Apr 2011 | Bent | Wildfire | — | — | — | 1 |
| 31 Dec 2011 | Logan | High Wind | 72 mph | — | — | 1 |
| 25 Oct 2011 | Forecast zone | Winter Storm | — | — | — | 1 |
| 16 Jun 2011 | Forecast zone | Strong Wind | 49 mph | — | — | 1 |
| 30 Jun 2011 | Logan | Thunderstorm Wind | 70 mph | — | — | 1 |
| 30 Jun 2011 | Grand | Thunderstorm Wind | 69 mph | — | — | 1 |
| 9 Sep 2011 | Adams | Lightning | — | — | — | 1 |
| 5 Jun 2011 | Garfield | Flood | — | $1,750,000 | — | — |
| 7 Jul 2011 | Denver | Flash Flood | — | $1,000,000 | — | — |
| 12 Nov 2011 | Forecast zone | High Wind | 76 mph | $500,000 | — | — |
| 28 Jun 2011 | Kit Carson | Thunderstorm Wind | 84 mph | $500,000 | — | — |
| 13 Jul 2011 | Boulder | Flash Flood | — | $300,000 | — | — |
| 17 Jul 2011 | Boulder | Flash Flood | — | $300,000 | — | — |
| 16 Jun 2011 | Kit Carson | Thunderstorm Wind | 90 mph | $300,000 | — | — |
| 12 Nov 2011 | Forecast zone | High Wind | 70 mph | $250,000 | — | — |
| 18 Jul 2011 | Summit | Flash Flood | — | $200,000 | — | — |
| 30 Jun 2011 | Grand | Thunderstorm Wind | 83 mph | $200,000 | — | — |
| 30 Jun 2011 | Denver | Lightning | — | $200,000 | — | — |
| 12 Jul 2011 | Weld | Flash Flood | — | $50,000 | — | — |
| 1 Jun 2011 | Mesa | Flood | — | $125,000 | — | — |
| 11 Jul 2011 | Mesa | Flash Flood | — | $100,000 | — | — |
| 28 Jun 2011 | Rio Blanco | Thunderstorm Wind | 85 mph | $100,000 | — | — |
| 1 Dec 2011 | Forecast zone | Strong Wind | 56 mph | $100,000 | — | — |
| 11 Jul 2011 | Douglas | Lightning | — | $100,000 | — | — |
| 21 Jul 2011 | Arapahoe | Lightning | — | $70,000 | — | — |
Up to 40 events with deaths, injuries, damage of $50,000 or more, or a tornado rating, ranked by deaths, injuries and damage.
Federal disaster declarations in 2011
| Declared | Number | Type | Incident | Title | Counties |
|---|---|---|---|---|---|
| 16 Jun 2011 | FM-2923 | Fire management assistance | Fire | Duckett Fire | 2 |
| 3 Apr 2011 | FM-2877 | Fire management assistance | Fire | Crystal Fire | 1 |
| 21 Mar 2011 | FM-2873 | Fire management assistance | Fire | Indian Gulch Fire | 1 |
Flood insurance claims with a 2011 date of loss
89 NFIP claims, 40 of them paid, for $512,493.
Sources: NOAA NCEI Storm Events through 30 Jun 2026; OpenFEMA DisasterDeclarationsSummaries v2 (1 Oct 2026); OpenFEMA NfipClaims v3 (8 Sep 2026). Built 1 Oct 2026.