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Utah Natural Disasters and Weather Extremes

 
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The chance of earthquake damage in Utah is higher than the national average. The risk of tornado damage in Utah is much lower than the national average.

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

Earthquake Index, #6

Utah
2.02
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, #4

Utah
0.0191
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, #44

Utah
12.59
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 3,615 other weather extremes events from 1950 to 2010 were recorded in Utah. The following is a break down of these events:

TypeCountTypeCountTypeCountTypeCountTypeCount
Avalanche:43Blizzard:12Cold:49Dense Fog:66Drought:102
Dust Storm:3Flood:451Hail:398Heat:1Heavy Snow:503
High Surf:0Hurricane:0Ice Storm:4Landslide:9Strong Wind:295
Thunderstorm Winds:754Tropical Storm:0Wildfire:49Winter Storm:388Winter Weather:228
Other:260 

Volcanos Nearby

A total of 7 volcanoes are found in or near Utah.

NameRegionLatitudeLongitudeElevation (foot)TypeStatusLast Eruption
Black Rock DesertUS-Utah, United States38.97-112.51800Volcanic fieldRadiocarbonLast known eruption A.D. 1-1499
Markagunt PlateauUS-Utah, United States37.58-112.672840Volcanic fieldDendrochronologyLast known eruption A.D. 1-1499
Bald KnollUS-Utah, United States37.328-112.4082135Cinder coneHoloceneUnknown
KolobUS-Utah, United States37.33-113.122727Volcanic fieldHoloceneUnknown
Santa ClaraUS-Utah, United States37.257-113.6251465Volcanic fieldHoloceneUndated, but probable Holocene eruption
Uinkaret FieldUS-Arizona, United States36.38-113.131555Volcanic fieldHoloceneUndated, but probable Holocene eruption
Wapi Lava FieldUS-Idaho, United States42.88-113.221604Shield volcanoRadiocarbonLast known eruption B.C. (Holocene)

Historical Earthquake Events

A total of 48 historical earthquake events that had recorded magnitudes of 3.5 or above found in Utah.

DateMagnitudeDepth (km)LatitudeLongitude
1934-03-126.6N/A41.5-112.5
1934-03-126N/A41.7-112.86
1934-03-126N/A41.71-112.81
1934-03-126N/A41.75-112.5
1962-08-305.7N/A41.8-111.8
1959-07-215.6N/A37-112.5
1934-05-065.5N/A41.75-113
1950-01-185.3N/A40.5-110.5
1967-10-045.2N/A38.5-112.1
1966-08-175.2N/A37.3-114.1
1977-09-305.1540.52-110.44
1966-08-185.1N/A37.3-114.1
1962-09-055.1N/A40.7-112
1980-05-245539.94-111.97
1966-09-225N/A37.3-114.1
1963-07-074.9N/A39.6-111.9
1977-10-114.8640.49-110.49
1972-10-014.7540.6-111.3
1982-05-244.7538.71-112.04
1981-04-054.6137.63-113.3
1972-06-024.6538.6-112.2
1970-03-294.61041.6-113.7
1972-03-064.6541.9-111.6
1983-10-084.5640.75-111.99
1966-03-174.4N/A41.7-111.5
1967-02-154.4N/A40.1-109.1
1983-12-094.3N/A38.58-112.57
1972-01-034.3538.6-112.1
1964-10-184.3N/A41.9-111.8
1967-12-074.3N/A41.3-111.7
1972-10-164.11040.4-111
1976-11-054.1741.81-112.7
1971-11-104537.8-113.1
1968-08-044N/A39.1-111.4
1981-02-203.9240.33-111.74
1970-04-213.9440.1-108.9
1980-04-063.8539.95-111.98
1979-04-303.8737.88-111.02
1984-08-163.7639.39-111.94
1981-02-013.7N/A37.57-113.24
1963-08-143.7N/A41.5-112.1
1982-03-053.6237.37-112.61
1985-01-263.6241.89-112.53
1967-03-053.5N/A41.3-111.7
1981-05-143.5739.47-111.06
1979-01-123.5N/A37.73-113.13
1984-03-213.5N/A39.34-111.11
1981-01-163.5237.45-113.1

Historical Tornado Events

A total of 8 historical tornado events that had recorded magnitude of 2 or above found in Utah.

DateMagnitudeStart Lat/LogEnd Lat/LogLengthWidthFatalitiesInjuriesProperty DamageCrop DamageAffected County
1955-06-16239°14'N / 111°50'W39°15'N / 111°47'W2.70 Miles333 Yards000K0Sanpete
1963-06-03240°53'N / 111°53'W2.00 Miles7 Yards000K0Davis
1965-02-09240°43'N / 112°06'W0.10 Mile13 Yards0025K0Salt Lake
1967-11-02238°55'N / 111°15'W0025K0Emery
1968-08-14241°15'N / 112°05'W1.50 Miles50 Yards01250K0Weber
1970-06-10238°57'N / 109°43'W000K0Grand
1999-08-11240°44'N / 111°52'W40°44'N / 111°52'W4.30 Miles150 Yards180170.0M500KSalt Lake
 Brief Description: Around lunch time, a tornado touched down in the southwest portions of Salt Lake City. The tornado intensified to an F2 on the Fujita scale, and moved northeast through the metropolitan area of Salt Lake City. It caused widespread damage at the Delta Center, then ripped across an outdoor retailers convention tent, where the lone fatality occurred along with many of the injuries. After blowing out many windows in the Wyndam Hotel, the tornado continued its northeast track, knocking down scaffolding and shearing off a crane at the LDS Assembly Hall construction site. Next it skirted the Capitol Building, ripping out several large trees there and in historic Memory Grove. It then moved into the residential area known as The Avenues, damaging hundreds of trees and ripping the roofs off of several homes, before finally lifting back into the clouds. All told, there was 1 fatality, 80 injured, 300 buildings and homes sustained damage, with 34 homes deemed uninhabitable. At least 500 trees were totally destroyed, with 300 more damaged. Many vehicles were damaged or totalled as well. M38OU
2002-09-08239°16'N / 111°38'W39°16'N / 111°38'W2.70 Miles270 Yards002.0M100KSanpete
 Brief Description: An F2 tornado began one mile south-southwest of Manti and moved northeast through Southeast Manti. The first mile of the tornado path was across open land, however the tornado produced some remarkable damage at the start. A 10X12 foot pioneer building was lifted, rotated 90 degrees, and moved 8 feet before being dropped back to the ground. At the south end of Manti, the tornado struck the Anderson Lumber business and did substantial damage. A 40 foot semi-trailer, loaded with insulation, was lifted and thrown onto it's side approximately 35 to 40 feet away. A large amount of debris, along with a 10X10 foot wooden shed, was thrown across Highway 89 and over the hill some 200 to 300 feet away. The wide swath of the tornado did considerable damage as it moved through the residential area in Southeast Manti. As the tornado exited the residential area, where some of the heaviest damage occurred, a 26 foot camp trailer was lifted and thrown to the west-northwest some 150 to 200 feet and disintegrated. The tornado continued across open farmland another half a mile or so before dissipating near the mountains. It has been determined that this was a high-end F2 tornado, with winds as high as 157 mph. The distance traveled was 2.75 miles, and the width was 800 feet. Time on the ground was approximately 15 minutes. Estimated damage is around $2,000,000, but could still go higher. Amazingly, there were no injuries.


* 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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