Costilla County Natural Disasters and Weather Extremes
The chance of earthquake damage in Costilla County is lower than Colorado average and is much lower than the national average. The risk of tornado damage in Costilla County is much lower than Colorado average and is much lower than the national average.
Earthquake Index, #46
| Costilla County | 0.08 |
| Colorado | 1.32 |
| U.S. | 1.81 |
The earthquake index value is calculated based on historical earthquake events data using USA.com algorithms. It is an indicator of the earthquake level in a region. A higher earthquake index value means a higher chance of an earthquake.
Volcano Index, #23
| Costilla County | 0.0002 |
| Colorado | 0.0009 |
| U.S. | 0.0023 |
The volcano index value is calculated based on the currently known volcanoes using USA.com algorithms. It is an indicator of the possibility of a region being affected by a possible volcano eruption. A higher volcano index value means a higher chance of being affected.
Tornado Index, #39
| Costilla County | 14.18 |
| Colorado | 117.98 |
| U.S. | 136.45 |
The tornado index value is calculated based on historical tornado events data using USA.com algorithms. It is an indicator of the tornado level in a region. A higher tornado index value means a higher chance of tornado events.
Other Weather Extremes Events
A total of 1,586 other weather extremes events within 50 miles of Costilla County were recorded from 1950 to 2010. The following is a break down of these events:
| Type | Count | Type | Count | Type | Count | Type | Count | Type | Count |
| Avalanche: | 0 | Blizzard: | 0 | Cold: | 0 | Dense Fog: | 0 | Drought: | 7 |
| Dust Storm: | 0 | Flood: | 120 | Hail: | 1,127 | Heat: | 0 | Heavy Snow: | 0 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 0 | Landslide: | 0 | Strong Wind: | 2 |
| Thunderstorm Winds: | 212 | Tropical Storm: | 0 | Wildfire: | 17 | Winter Storm: | 0 | Winter Weather: | 0 |
| Other: | 101 | ||||||||
Volcanos Nearby
A total of 1 volcano is found in or near Costilla County.
| Distance (miles) | Name | Region | Latitude | Longitude | Elevation (foot) | Type | Status | Last Eruption |
| 116.0 | Valles Caldera | US-New Mexico, United States | 35.87 | -106.57 | 3430 | Caldera | Pleistocene-Fumarol | Quaternary eruption(s) with the only known Holocene activity being hydrothermal |
Historical Earthquake Events
A total of 1 historical earthquake event that had a recorded magnitude of 3.5 or above found in or near Costilla County.
| Distance (miles) | Date | Magnitude | Depth (km) | Latitude | Longitude |
| 47.2 | 1973-09-23 | 4.2 | 5 | 37.1 | -104.6 |
Historical Tornado Events
A total of 3 historical tornado events that had recorded magnitude of 2 or above found in or near Costilla County.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 10.8 | 1955-07-31 | 3 | 37°26'N / 105°26'W | 0.50 Mile | 100 Yards | 0 | 0 | 3K | 0 | Costilla | |
| 26.8 | 1955-07-10 | 2 | 37°27'N / 105°52'W | 0 | 0 | 3K | 0 | Alamosa | |||
| 38.9 | 1953-06-17 | 2 | 37°06'N / 106°06'W | 1.00 Mile | 1417 Yards | 0 | 0 | 0K | 0 | Conejos |
* The information on this page is based on the global volcano database, the U.S. earthquake database of 1638-1985, and the U.S. Tornado and Weather Extremes database of 1950-2010.