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Denver, CO Natural Disasters and Weather Extremes

 
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The chance of earthquake damage in Denver is much higher than Colorado average and is much higher than the national average. The risk of tornado damage in Denver is much higher than Colorado average and is much higher than the national average.

Topics:Earthquake IndexVolcano IndexTornado IndexOther Weather Extremes EventsVolcanos NearbyHistorical Earthquake EventsHistorical Tornado Events

Earthquake Index, #3

Denver, CO
11.53
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, #187

Denver, CO
0.0000
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, #8

Denver, CO
299.33
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 3,355 other weather extremes events within 50 miles of Denver, CO were recorded from 1950 to 2010. The following is a break down of these events:

TypeCountTypeCountTypeCountTypeCountTypeCount
Avalanche:0Blizzard:7Cold:1Dense Fog:0Drought:31
Dust Storm:0Flood:150Hail:2,275Heat:0Heavy Snow:43
High Surf:0Hurricane:0Ice Storm:0Landslide:0Strong Wind:27
Thunderstorm Winds:467Tropical Storm:0Wildfire:2Winter Storm:35Winter Weather:7
Other:310 

Volcanos Nearby

No volcano is found in or near Denver, CO.

Historical Earthquake Events

A total of 28 historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Denver, CO.

Distance (miles)DateMagnitudeDepth (km)LatitudeLongitude
13.51967-08-095.3N/A39.9-104.7
19.01967-11-275.2N/A40-104.7
9.91966-01-055N/A39.8-104.7
11.41965-02-164.9N/A39.9-105
10.51967-04-104.8N/A39.9-104.8
18.11965-09-144.8N/A39.5-104.9
2.81965-11-214.7N/A39.8-104.9
5.01965-09-144.7N/A39.8-104.8
11.91965-09-294.7N/A39.8-105.1
17.71965-09-144.7N/A39.9-104.6
4.41965-07-314.6N/A39.7-104.9
5.01965-09-294.6N/A39.8-104.8
5.01965-09-294.6N/A39.8-104.8
5.01965-11-214.6N/A39.8-104.8
15.01965-02-164.6N/A39.9-105.1
15.11963-07-024.6N/A39.8-104.6
5.01965-09-134.5N/A39.8-104.8
10.51971-08-084.4539.9-104.8
13.51967-11-274.4N/A39.9-104.7
13.51967-04-274.4N/A39.9-104.7
13.51965-11-214.4N/A39.9-104.7
6.01967-02-034.3N/A39.7-104.8
13.51966-11-144.3N/A39.9-104.7
15.01970-05-234.1539.9-105.1
17.71962-12-054N/A39.9-104.6
10.91981-04-023.8939.91-104.95
17.71967-11-153.7N/A39.9-104.6
9.91962-12-043.5N/A39.8-104.7

Historical Tornado Events

A total of 38 historical tornado events that had recorded magnitude of 2 or above found in or near Denver, CO.

Distance (miles)DateMagnitudeStart Lat/LogEnd Lat/LogLengthWidthFatalitiesInjuriesProperty DamageCrop DamageAffected County
3.31986-06-08239°43'N / 104°54'W1.00 Mile50 Yards062.5M0Denver
3.41988-06-15239°44'N / 104°56'W0.50 Mile400 Yards002.5M0Denver
3.41988-06-15339°44'N / 104°56'W2.50 Miles200 Yards0725.0M0Denver
3.51986-06-08239°43'N / 104°51'W39°43'N / 104°51'W0.10 Mile50 Yards002.5M0Arapahoe
4.51976-05-30239°48'N / 104°53'W39°50'N / 104°47'W5.40 Miles67 Yards00250K0Adams
7.91981-06-03239°44'N / 105°02'W39°44'N / 105°01'W002.5M0Denver
8.91981-06-03239°43'N / 105°03'W39°44'N / 105°02'W002.5M0Jefferson
9.11981-06-03239°52'N / 104°59'W2.30 Miles133 Yards04225.0M0Adams
10.11975-05-18339°48'N / 104°44'W39°51'N / 104°41'W4.10 Miles440 Yards000K0Adams
11.31978-05-17239°38'N / 104°45'W0.50 Mile33 Yards00250K0Adams
11.51987-07-02239°53'N / 104°44'W1.00 Mile250 Yards003K0Adams
14.01987-06-20239°46'N / 104°37'W1.00 Mile30 Yards000K0Adams
15.71986-06-08239°50'N / 104°36'W2.00 Miles100 Yards000K0Adams
15.81985-07-19239°32'N / 104°52'W0.50 Mile40 Yards00250K0Douglas
16.31988-06-05239°57'N / 105°04'W0.50 Mile50 Yards00250K0Boulder
18.31988-06-05240°00'N / 104°58'W40°02'N / 104°59'W1.00 Mile50 Yards00250K0Adams
19.41988-06-05240°02'N / 104°59'W40°02'N / 104°58'W1.00 Mile50 Yards00250K0Weld
19.41982-06-12339°49'N / 104°32'W39°53'N / 104°32'W3.00 Miles400 Yards003K0Adams
25.01961-05-20239°24'N / 104°52'W2.00 Miles67 Yards0225K0Douglas
25.01980-10-15240°01'N / 105°13'W1.50 Miles50 Yards0025K0Boulder
25.81958-06-08240°04'N / 104°42'W40°06'N / 104°34'W7.10 Miles33 Yards003K0Weld
30.51996-07-13239°48'N / 104°24'W39°39'N / 104°13'W12.00 Miles440 Yards00220K6.5MAdams
 Brief Description: A fast moving tornado ripped a 12-mile path of destruction near Strasburg, in eastern Adams County. The tornado caused extensive structural damage to several galvanized metal grain silos, farm buildings and sheds in the area. The roof of a two-story log home was completely torn off. The home received substantial damage from the wind and heavy rain that followed the tornado. Several other homes in the area sustained roof damage and a number of power poles were downed along Highway 36.
30.51984-05-18240°07'N / 104°40'W40°12'N / 104°35'W5.00 Miles50 Yards0025K0Weld
31.61976-06-04240°13'N / 104°49'W1.50 Miles200 Yards0025K0Weld
31.91959-05-29239°53'N / 104°18'W2.00 Miles33 Yards0025K0Adams
32.31984-05-18240°07'N / 104°35'W40°10'N / 104°28'W5.00 Miles50 Yards000K0Weld
35.41983-06-04239°20'N / 104°35'W39°24'N / 104°20'W8.00 Miles200 Yards00250K0Elbert
36.31984-05-18240°11'N / 104°34'W40°14'N / 104°28'W5.00 Miles50 Yards003K0Weld
40.72009-06-15239°14'N / 104°38'W39°11'N / 104°36'W4.00 Miles440 Yards00100K0KElbert
 Brief Description: EVENT NARRATIVE: The tornado began 8 miles south-southwest of Elizabeth and produced minor damage to two homes. The tornado then moved southeast and intensified with EF1 and EF2 damage observed 9 miles south of Elizabeth, with substantial damage to a farm, trees, and snapped power poles. The tornado moved on a more southerly track for the next 2 miles with additional EF1 and EF2 damage 11 miles south of Elizabeth. The tornado leveled a 70-yr old barn and a nearby cinder-block shed was torn open. Major tree damage was also observed. The tornado then continued southward for another mile before lifting with some EF0 and EF1 damage 12 miles south of Elizabeth. Minor damage to another home was observed with several large trees uprooted. EPISODE NARRATIVE: Severe weather again broke out across Northeast Colorado. Three tornadoes touched down in southwest Elbert County; the strongest was rated EF2. In addition to the tornadoes, severe thunderstorms produced hail up to the size of golfballs. Damaging thunderstorm winds also downed a tree in Boulder. Other counties affected by severe thunderstorms included: Boulder, Douglas, Larimer, Lincoln and Sedgwick.
41.31952-05-15340°20'N / 104°34'W40°15'N / 104°28'W7.40 Miles150 Yards0525K0Weld
42.92008-05-22340°13'N / 104°45'W40°33'N / 104°57'W24.00 Miles1760 Yards178147.0M0KWeld
 Brief Description: EVENT NARRATIVE: A powerful tornado swept north-northwestward across Weld County and into Larimer County, carving a path of destruction, nearly 39 miles in length. The tornado, up to one-mile wide at times, initially touched down northeast of Platteville and finally lifted 6 miles west-northwest of Wellington. A tornado assessment in the aftermath of the tornado revealed extensive areas of damage. On the enhanced Fujita Scale there were pockets of EF3 damage, mainly near the Missile Silo Park Campground, and to businesses and home in eastern Windsor. There was one fatality, and 78 injuries. One man was killed when he tried to escape the trailer park in his motor home. Preliminary estimates from FEMA indicated 850 homes were damaged, and nearly 300 homes were significantly damaged or destroyed. Privately insured damages totaled $147 million, and the Poudre Valley Rural Electric Associated reported $1 million of damage to electric transmission lines. EPISODE NARRATIVE: A powerful tornado swept north-northwestward across Weld County, carving a path of destruction, nearly 39 miles in length. The tornado, up to one-mile wide at times, initially touched down northeast of Platteville and finally lifted 6 miles west-northwest of Wellington. A tornado assessment in the aftermath of the tornado revealed extensive areas of damage. On the enhanced Fujita Scale there were pockets of EF3 damage, mainly near the Missile Silo Park Campground, and to businesses and home in eastern Windsor. Farmers also reported extensive damage to crops and irrigation equipment. There was one fatality, and 78 injuries ranging from broken bones to minor cuts and lacerations. One man was killed when he tried to escape a trailer park in his motor home. Tractor trailers were flipped along U.S. Highway 85, and over 200 power poles were snapped or blown down. Approximately 60,000 people were left without electricity. The tornado overturned 15 railroad cars and destroyed a lumber car on the Great Western Railway of Colorado. The tornado also flattened Windsor's main feedlot and destroyed a dairy barn. Most of the four-hundred cows were killed in the tornado or destroyed later. In addition to the damaging winds, the thunderstorm also produced hail up to the size of baseballs. Another tornado rated an EF1, from a separate severe thunderstorm, briefly touched down near Dacono and destroyed 5 buildings. The tornado overturned a five-wheel trailer and injured the man who was sitting inside. Preliminary estimates from FEMA indicated 850 homes were damaged, and nearly 300 homes were significantly damaged or destroyed. The Poudre Valley Rural Electric Association reported $1 million of damage to electric transmission lines. Privately insured damages totaled $147 million, making it the state's 4th costliest disaster.
44.91982-06-25240°23'N / 104°38'W1.00 Mile200 Yards000K0Weld
45.81982-06-14239°29'N / 104°06'W2.00 Miles200 Yards000K0Elbert
47.01977-06-13239°05'N / 104°49'W1.00 Mile50 Yards00250K0El Paso
48.11957-05-30240°28'N / 104°53'W40°27'N / 104°52'W003K0Weld
48.71957-05-30240°28'N / 104°56'W40°28'N / 104°53'W1.90 Miles33 Yards003K0Larimer
48.81996-07-31240°27'N / 104°32'W40°22'N / 104°29'W5.00 Miles100 Yards0000Weld
 Brief Description: A tornado touched down near Gill. It damaged a grain bin owned by the Northern Feed and Bean of Gill. Although not confirmed, it is believed the same twister was responsible for destroying a 60-ft by 250-ft storage building south of town. The tornado also uprooted a tree near Kuner, east of Kersey. The time of the tornado was approximated. In addition several twisters, strong thunderstorm winds and large hail the size of baseballs caused several power outages in central Weld County. Power was out from Kersey to Purcell, which covered a distance of 20 miles, for about 12 hours. An estimated 400 to 500 residents were without power throughout the night. Crops in the area also received substantial damage, but no dollar estimates were available.
49.91957-05-30240°30'N / 104°56'W40°28'N / 104°54'W1.30 Miles33 Yards013K0Weld


* 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.


 
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