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Dennison, MN Natural Disasters and Weather Extremes

 
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The chance of earthquake damage in Dennison is about the same as Minnesota average and is much lower than the national average. The risk of tornado damage in Dennison is higher than Minnesota average and is higher than the national average.

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

Earthquake Index, #530

Dennison, MN
0.00
Minnesota
0.01
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, #1

Dennison, MN
0.0000
Minnesota
0.0000
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, #198

Dennison, MN
190.80
Minnesota
135.90
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 4,108 other weather extremes events within 50 miles of Dennison, MN were recorded from 1950 to 2010. The following is a break down of these events:

TypeCountTypeCountTypeCountTypeCountTypeCount
Avalanche:0Blizzard:43Cold:34Dense Fog:2Drought:3
Dust Storm:0Flood:220Hail:1,693Heat:18Heavy Snow:61
High Surf:0Hurricane:0Ice Storm:7Landslide:0Strong Wind:40
Thunderstorm Winds:1,670Tropical Storm:0Wildfire:1Winter Storm:115Winter Weather:1
Other:200 

Volcanos Nearby

No volcano is found in or near Dennison, MN.

Historical Earthquake Events

No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Dennison, MN.

No historical earthquake events found in or near Dennison, MN.

Historical Tornado Events

A total of 71 historical tornado events that had recorded magnitude of 2 or above found in or near Dennison, MN.

Distance (miles)DateMagnitudeStart Lat/LogEnd Lat/LogLengthWidthFatalitiesInjuriesProperty DamageCrop DamageAffected County
5.32001-05-09244°28'N / 93°05'W44°30'N / 93°02'W3.00 Miles50 Yards007.0M0Dakota
 Brief Description: The Northfield tornado (which originated in Rice County) crossed Highway 19 into extreme southeastern Dakota County, then went into Goodhue County. Five homes sustained major damage, including one with its roof completely removed. 12 other homes received minor damage. Several motorists barely made it into nearby homes before the tornado struck.
6.12001-05-09244°28'N / 93°10'W44°28'N / 93°05'W5.00 Miles50 Yards019.0M0Rice
 Brief Description: NWS damage survey rated the tornado an F2. Tornado touched down briefly in downtown Northfield, flipping over a semi trailer truck and lifting the roof off of one business. Three-fourths mile later, it touched down again on the east side of Northfield, and then remained on the ground for 11 miles. After being in Rice County for 5 miles, it crossed Highway 19 into Dakota County and then dissipated in Goodhue County 4 miles west of Cannon Falls, for a total of 12 miles. Numerous rear flank downdraft gusts estimated at 90 mph caused damage alongside the southern periphery of tornado track. One man sustained minor injuries when he was blown from a tractor, but did not require hospitalization. A total of 8 homes received major damage, 22 more had minor damage, and a turkey processing plant was destroyed.
6.61987-07-27344°28'N / 93°02'W44°26'N / 93°16'W10.00 Miles220 Yards002.5M0Rice
6.92001-05-09244°30'N / 93°02'W44°31'N / 92°59'W4.00 Miles50 Yards004.0M0Goodhue
 Brief Description: The Northfield tornado (which originated in Rice County) dissipated on the south side of Lake Byllesby, but not before destroying several sheds and causing minor damage to 12 homes.
8.71968-05-15244°29'N / 93°12'W44°35'N / 92°55'W15.40 Miles333 Yards01250K0Dakota
10.31968-05-15244°28'N / 93°14'W44°29'N / 93°12'W02250K0Rice
10.71987-07-27344°34'N / 92°43'W44°28'N / 93°02'W20.00 Miles220 Yards002.5M0Goodhue
13.41998-03-29244°33'N / 93°15'W44°33'N / 93°11'W3.00 Miles440 Yards0000Dakota
17.91998-03-29244°28'N / 93°26'W44°28'N / 93°20'W5.00 Miles440 Yards0020.0M0Rice
 Brief Description: Four homes and 6 businesses severely damaged. Street department building damaged. 20 farms damaged or destroyed.
18.71982-05-17344°06'N / 93°13'W44°12'N / 93°04'W10.00 Miles100 Yards00250K0Steele
24.71981-04-29244°12'N / 92°39'W44°12'N / 92°36'W022.5M0Olmsted
29.91970-04-29243°58'N / 93°33'W44°10'N / 93°15'W20.10 Miles27 Yards00250K0Waseca
30.61952-06-24244°20'N / 93°51'W45°07'N / 93°05'W65.80 Miles267 Yards062.5M0Le Sueur
30.71977-05-21244°31'N / 93°38'W44°34'N / 93°37'W2.70 Miles100 Yards00250K0Le Sueur
30.71982-05-17343°51'N / 93°10'W44°06'N / 93°10'W16.00 Miles100 Yards00250K0Steele
31.31954-06-25244°50'N / 92°55'W44°52'N / 92°51'W2.70 Miles1760 Yards0025K0Washington
31.31967-04-30243°59'N / 93°25'W44°07'N / 93°25'W9.20 Miles67 Yards0025.0M0Waseca
31.51967-04-30443°51'N / 93°14'W44°06'N / 93°13'W17.00 Miles100 Yards0025.0M0Steele
31.51979-05-22244°49'N / 93°19'W2.00 Miles100 Yards002.5M0Hennepin
31.81981-06-14344°49'N / 93°16'W44°53'N / 93°10'W6.20 Miles600 Yards02325.0M0Hennepin
32.51977-05-21244°34'N / 93°37'W44°48'N / 93°31'W16.60 Miles33 Yards00250K0Scott
33.01998-03-29244°22'N / 93°50'W44°26'N / 93°34'W17.00 Miles1760 Yards0220.0M0Le Sueur
 Brief Description: Tornado tracked through Le Center and adjoining rural areas. Most of the businesses in the southern part of town were damaged. Buildings destroyed at county fairgrounds. 15 mobiles homes at a trailer park destroyed, another 26 suffering major damage. Over 100 farm buildings destroyed.
34.11963-06-09244°08'N / 93°43'W44°11'N / 93°32'W9.30 Miles150 Yards00250K0Waseca
34.71964-08-28244°17'N / 92°21'W44°20'N / 92°20'W2.70 Miles67 Yards00250K0Wabasha
34.71981-06-14244°23'N / 93°44'W2.00 Miles100 Yards08250K0Le Sueur
35.01953-05-10244°50'N / 92°40'W44°51'N / 92°39'W002.5M0Pierce
35.61979-10-03244°43'N / 92°27'W2.50 Miles100 Yards0025K0Pierce
35.82010-06-17243°53'N / 93°05'W43°54'N / 93°03'W2.00 Miles100 Yards010K0KSteele
 Brief Description: EVENT NARRATIVE: This EF-2 tornado touched down and tracked east-northeast, and soon crossed the path of the Blooming Prairie EF-3 that had moved north-northeast about 10 minutes earlier. A manufactured home was obliterated by the EF-2. A woman inside the home was blown about 20 feet, but was found under debris, rescued by law enforcement, and survived. The tornado continued moving east-northeast, and several outbuildings were destroyed, along with many broken trees. The tornado continued into Dodge County. EPISODE NARRATIVE: Several strong storms developed in west-central Minnesota during the mid afternoon hours of June 17th. These storms quickly become severe and produced softball size hail northwest of Alexandria and a tornado near Leaf Valley that became the EF-4 that moved through Wadena, Minnesota. By the late afternoon, numerous thunderstorms developed across southern Minnesota along the leading edge of extreme instability. Numerous funnel cloud reports and a few brief tornado touchdowns were noted prior to 5 pm, but once the low level shear (0-1 km) increased significantly from 15 knots, to over 35 knots, strong tornadoes developed along the Iowa border. These storms along the Iowa border produced a series of long-lived tornadoes near Albert Lea, Minnesota. Very large hail also accompanied some tornadoes along with flash flooding.
36.91981-06-14344°53'N / 93°10'W45°00'N / 93°02'W10.00 Miles600 Yards16025.0M0Ramsey
37.02010-06-17343°51'N / 93°07'W43°54'N / 93°04'W4.00 Miles440 Yards000K0KSteele
 Brief Description: EVENT NARRATIVE: This tornado developed just north of the Steele/Freeborn County line, shortly after the dissipation in Freeborn County of the Newry tornado. This new tornado moved northeast, and initially, occasional trees were broken. Damage intensified somewhat when it hit a farm on State Highway 30 just west of Blooming Prairie. The tornado continued moving northeast, decimating crops. Some bean fields were scoured in spots. It intensified significantly to EF-3 2.5 miles northwest of Blooming Prairie, where a house was leveled, trees were snapped, and large portions of bark were removed. A pickup truck was lofted about 50 feet into the basement of the house. Several other houses sustained minor damage. The tornado dissipated just west of Highway 218 and 123rd Street. Video recorded by law enforcement and chasers. EPISODE NARRATIVE: Several strong storms developed in west-central Minnesota during the mid afternoon hours of June 17th. These storms quickly become severe and produced softball size hail northwest of Alexandria and a tornado near Leaf Valley that became the EF-4 that moved through Wadena, Minnesota. By the late afternoon, numerous thunderstorms developed across southern Minnesota along the leading edge of extreme instability. Numerous funnel cloud reports and a few brief tornado touchdowns were noted prior to 5 pm, but once the low level shear (0-1 km) increased significantly from 15 knots, to over 35 knots, strong tornadoes developed along the Iowa border. These storms along the Iowa border produced a series of long-lived tornadoes near Albert Lea, Minnesota. Very large hail also accompanied some tornadoes along with flash flooding.
37.21967-04-30443°51'N / 93°30'W44°07'N / 93°29'W18.20 Miles267 Yards62225.0M0Waseca
37.31952-06-23244°50'N / 93°30'W44°51'N / 93°28'W052.5M0Hennepin
38.61951-07-20344°56'N / 93°30'W44°53'N / 93°16'W11.60 Miles33 Yards54025.0M0Hennepin
38.72006-08-24344°18'N / 93°58'W44°15'N / 93°37'W17.50 Miles880 Yards13020.0M4.0MLe Sueur
 Brief Description: The F3 tornado that began in Nicollet County at 1630 CST moved into Le Sueur County near the northern city limits of Kasota. Over 100 homes suffered some damage, dozens of homes had major damage, and three were completely leveled. The tornado moved east-northeast for about ten miles in Le Sueur County, then turned and moved east-southeast until dissipation. Hundreds of farm animals were killed, including 200 cows at a large dairy. Approximately five thousand acres of corn and soybeans were estimated to be ruined across the county. A State Farm spokeswoman said the company expected 4,500 homeowner claims and 8,000 auto claims from the storm. Some information provided by the Star Tribune newspaper. A 91 year old man perished in the upper floor of his home when a tree crashed through the roof. M91PH
38.81961-05-14243°58'N / 93°36'W44°02'N / 93°32'W5.10 Miles880 Yards01250K0Waseca
38.92010-06-17243°51'N / 93°19'W43°56'N / 93°22'W7.00 Miles880 Yards000K0KSteele
 Brief Description: EVENT NARRATIVE: This tornado moved from Freeborn County and into Steele County and began moving to the north-northwest, thereby missing the city of Ellendale. At about (43.9255, -93.3453), it began moving toward the northwest, and at about (43.9407, -93.3627), it actually turned some more and moved toward the west-northwest until it finally dissipated. Accounting for the change in direction, the tornado had an actual path length of 7.7 miles in Steele County. Along the way, several homes experienced significant structural damage, with one house completely destroyed and the roof removed from two others. Many outbuildings were destroyed, and hundreds of trees were uprooted and snapped. EPISODE NARRATIVE: Several strong storms developed in west-central Minnesota during the mid afternoon hours of June 17th. These storms quickly become severe and produced softball size hail northwest of Alexandria and a tornado near Leaf Valley that became the EF-4 that moved through Wadena, Minnesota. By the late afternoon, numerous thunderstorms developed across southern Minnesota along the leading edge of extreme instability. Numerous funnel cloud reports and a few brief tornado touchdowns were noted prior to 5 pm, but once the low level shear (0-1 km) increased significantly from 15 knots, to over 35 knots, strong tornadoes developed along the Iowa border. These storms along the Iowa border produced a series of long-lived tornadoes near Albert Lea, Minnesota. Very large hail also accompanied some tornadoes along with flash flooding.
39.21958-05-24344°58'N / 92°46'W44°51'N / 92°32'W13.70 Miles50 Yards06250K0St. Croix
39.72010-07-14244°46'N / 92°34'W44°48'N / 92°16'W15.00 Miles100 Yards000K0KPierce
 Brief Description: EVENT NARRATIVE: Several barns and sheds were destroyed, and structural damage was noted at some homes. Many trees were broken or snapped. This tornado was accompanied by strong rear flank downdraft winds, which also knocked down trees and damaged some sheds. EPISODE NARRATIVE: The morning of Wednesday July 14th had a complex of severe thunderstorms moving across eastern North Dakota, into portions of west-central and central Minnesota. This complex moved eastward during the morning, and intensified across portions of east-central Minnesota and west-central Wisconsin. Several waves of severe thunderstorms developed across west-central Wisconsin and began to reform westward into Minnesota by the early afternoon. These severe storms that reformed in east-central Minnesota, quickly moved into west-central Wisconsin by the mid afternoon and caused tornadoes and damaging straight-line winds. In addition to the winds and hail, several inches of rainfall caused flooding in Polk, Barron, St Croix and Rusk Counties.
40.91964-04-13243°57'N / 92°28'W44°00'N / 92°28'W3.40 Miles50 Yards00250K0Olmsted
41.91962-09-16443°58'N / 92°27'W0.50 Mile33 Yards034250K0Olmsted
42.01965-05-06444°51'N / 93°32'W44°57'N / 93°32'W6.90 Miles200 Yards0025.0M0Carver
42.42003-07-14244°07'N / 93°48'W44°08'N / 93°47'W1.50 Miles220 Yards002.0M0Blue Earth
 Brief Description: The sixth tornado in a series was the last of five to hit Blue Earth County. This one took direct aim on four farmsteads. Barns, sheds and outbuildings were downed. A roof was taken off a house and numerous trees were snapped. Law Enforcement video showed this to be a multiple vortex tornado.
42.61998-03-29344°20'N / 93°57'W44°24'N / 93°50'W6.00 Miles2200 Yards0000Le Sueur
 Brief Description: See narrative for Nicollet county.
42.91976-06-14244°15'N / 93°53'W44°17'N / 93°52'W000K0Le Sueur
43.61984-04-26345°01'N / 93°14'W45°02'N / 93°13'W1.00 Mile60 Yards15225.0M0Hennepin
43.71958-05-24344°51'N / 92°32'W44°37'N / 92°00'W30.60 Miles50 Yards00250K0Pierce
44.02010-06-17343°45'N / 93°14'W43°49'N / 93°10'W5.00 Miles600 Yards000K0KFreeborn
 Brief Description: EVENT NARRATIVE: As the Lerdal tornado began to dissipate, it rotated around this new one west of Hollandale. This new EF-3 tornado went on to obliterate a farmstead, with virtually every outbuilding destroyed, and the farm house leveled. It continued northeast and took the roof off a house and destroyed a greenhouse. Just before dissipating, it hit one more farmstead near County Roads 30 and 35, causing damage to outbuildings, minor damage to the house, and uprooting and breaking a couple dozen trees. Video filmed by storm chaser. EPISODE NARRATIVE: Several strong storms developed in west-central Minnesota during the mid afternoon hours of June 17th. These storms quickly become severe and produced softball size hail northwest of Alexandria and a tornado near Leaf Valley that became the EF-4 that moved through Wadena, Minnesota. By the late afternoon, numerous thunderstorms developed across southern Minnesota along the leading edge of extreme instability. Numerous funnel cloud reports and a few brief tornado touchdowns were noted prior to 5 pm, but once the low level shear (0-1 km) increased significantly from 15 knots, to over 35 knots, strong tornadoes developed along the Iowa border. These storms along the Iowa border produced a series of long-lived tornadoes near Albert Lea, Minnesota. Very large hail also accompanied some tornadoes along with flash flooding.
44.11953-05-10243°45'N / 93°12'W43°48'N / 93°04'W6.90 Miles67 Yards633K0Freeborn
44.21982-05-17343°42'N / 93°08'W43°51'N / 93°10'W10.00 Miles100 Yards00250K0Freeborn
44.22010-07-14244°45'N / 92°21'W44°49'N / 92°15'W6.00 Miles30 Yards000K0KPierce
 Brief Description: EVENT NARRATIVE: Several sheds and outbuildings were destroyed, as were a couple of barns. Hundreds of trees were snapped. The tornado was accompanied by strong rear flank downdraft winds that also knocked down numerous trees. EPISODE NARRATIVE: The morning of Wednesday July 14th had a complex of severe thunderstorms moving across eastern North Dakota, into portions of west-central and central Minnesota. This complex moved eastward during the morning, and intensified across portions of east-central Minnesota and west-central Wisconsin. Several waves of severe thunderstorms developed across west-central Wisconsin and began to reform westward into Minnesota by the early afternoon. These severe storms that reformed in east-central Minnesota, quickly moved into west-central Wisconsin by the mid afternoon and caused tornadoes and damaging straight-line winds. In addition to the winds and hail, several inches of rainfall caused flooding in Polk, Barron, St Croix and Rusk Counties.
44.51979-07-03243°57'N / 92°24'W0.50 Mile100 Yards002.5M0Olmsted
44.51965-05-06444°59'N / 93°23'W45°03'N / 93°17'W5.90 Miles667 Yards65025.0M0Hennepin
44.81958-10-09245°01'N / 92°44'W45°01'N / 92°41'W0025K0St. Croix
44.91967-07-22244°49'N / 92°23'W44°46'N / 92°12'W9.20 Miles200 Yards03250K0Pierce
45.31962-05-22243°53'N / 92°29'W0.50 Mile33 Yards0025K0Olmsted
45.41953-07-25244°10'N / 93°53'W0.50 Mile67 Yards01250K0Blue Earth
45.61958-05-24345°09'N / 92°57'W44°58'N / 92°46'W15.10 Miles50 Yards06250K0Washington
46.01965-05-06444°47'N / 93°45'W44°54'N / 93°44'W7.70 Miles300 Yards38725.0M0Carver
46.21984-04-26345°02'N / 93°13'W45°06'N / 93°12'W4.50 Miles600 Yards0025.0M0Ramsey
46.41984-06-07343°40'N / 93°21'W43°53'N / 93°20'W14.00 Miles100 Yards01225.0M0Freeborn
46.61967-04-30343°51'N / 93°36'W43°56'N / 93°40'W6.10 Miles100 Yards0025.0M0Waseca
46.81967-04-30443°48'N / 93°31'W43°51'N / 93°30'W1.90 Miles267 Yards0025.0M0Freeborn
46.82010-06-17343°42'N / 93°25'W43°51'N / 93°19'W11.00 Miles1320 Yards000K0KFreeborn
 Brief Description: EVENT NARRATIVE: Touchdown was near the intersection of Freeborn County Roads 14 and 20. Multiple farmsteads experienced significant structural and tree damage, including one house completely destroyed and several others heavily damaged. Many outbuildings were destroyed, hundreds of trees uprooted and snapped, with some partially debarked. It then moved into Steele County, southwest of Ellendale, where it began moving to the north-northwest. EPISODE NARRATIVE: Several strong storms developed in west-central Minnesota during the mid afternoon hours of June 17th. These storms quickly become severe and produced softball size hail northwest of Alexandria and a tornado near Leaf Valley that became the EF-4 that moved through Wadena, Minnesota. By the late afternoon, numerous thunderstorms developed across southern Minnesota along the leading edge of extreme instability. Numerous funnel cloud reports and a few brief tornado touchdowns were noted prior to 5 pm, but once the low level shear (0-1 km) increased significantly from 15 knots, to over 35 knots, strong tornadoes developed along the Iowa border. These storms along the Iowa border produced a series of long-lived tornadoes near Albert Lea, Minnesota. Very large hail also accompanied some tornadoes along with flash flooding.
47.61967-04-30243°56'N / 92°21'W44°00'N / 92°14'W6.80 Miles33 Yards0025.0M0Olmsted
47.91965-05-06445°02'N / 93°17'W45°08'N / 93°14'W6.80 Miles1000 Yards317525.0M0Anoka
48.11965-05-06445°03'N / 93°17'W45°08'N / 93°10'W7.60 Miles667 Yards010825.0M0Ramsey
48.41986-07-18245°00'N / 93°17'W45°10'N / 93°19'W2.00 Miles833 Yards002.5M0Hennepin
49.01981-06-14244°51'N / 92°15'W0.50 Mile33 Yards00250K0Pierce
49.31962-09-16243°51'N / 92°25'W43°53'N / 92°21'W3.00 Miles33 Yards0025K0Olmsted
49.71965-05-06244°43'N / 93°56'W44°50'N / 93°52'W8.20 Miles667 Yards010025.0M0Carver
49.91953-05-10244°51'N / 92°39'W45°13'N / 92°23'W28.30 Miles100 Yards192.5M0St. Croix


* 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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