The June 2010 Northern Plains tornado outbreak was one of the most prolific summer tornado outbreaks in the Northern Great Plains of the United States on record. The outbreak began on June 16,with several tornadoes in South Dakota and Montana. The most intense storms took place the following day across much of eastern North Dakota and much of Minnesota. The system produced 93 tornadoes reported across four states while killing three people in Minnesota. Four of the tornadoes were rated as EF4 on the Enhanced Fujita scale,one in eastern North Dakota,and three in west-central and southern Minnesota. It was the most amount of violent tornadoes in a 24-hour period since there were five within 15 hours in the 2008 Super Tuesday tornado outbreak. This was the region's first major tornado outbreak of the year and one of the largest on record in the region,comparable to a similar outbreak in June 1992. The 48 tornadoes that touched down in Minnesota on June 17 marked the most active single day in the state's history.[2] June 17 was the second largest tornado day on record in the meteorological summer,behind the most prolific day of the 2003 South Dakota tornado outbreak on June 24,2003.
The Storm Prediction Center issued a moderate risk of severe weather for June 17,2010,citing a 10% threat for tornadoes,45% threat for large hail and 45% threat for damaging wind,initially thinking tornadoes would quickly reform into a straight-line wind event. The moderate risk area extended from around Fargo,North Dakota,to Des Moines,Iowa,and Omaha,Nebraska,including the Twin Cities area,with a slight risk area extending across the Upper Midwest. Surface dew points reached the low 70s °F (low 20s °C) with surface temperatures well into 80s °F (near 30°C) across Minnesota. Surface-based CAPE values were forecast to reach 2000–3000J/kg.[4]
The first tornadoes were reported across eastern North Dakota during the mid-afternoon where a tornado watch was issued for most of the state as well as extreme northwestern Minnesota closer to the Manitoba and northwestern Ontario borders where many tornadoes,some strong to violent,touched down late that afternoon.[5] After several tornadoes affected areas near the Grand Forks area and closer to the Canada–US border,the activity eventually shifted into northwestern Minnesota by the late afternoon while storms over northern Iowa moved across southern Minnesota near the Interstate 90 corridor producing many tornadoes. Other storms developed over central Minnesota near Interstate 94 but most activity missed the Twin Cities area. The supercells eventually reached the Wisconsin border later that evening and reformed into a squall line,rapidly ending the severe weather outbreak. Isolated tornado reports also occurred across Wisconsin and Iowa. Three people were killed according to KARE-TV including one in Mentor (Polk County),one in Almora (Otter Tail County)[citation needed] and one near Albert Lea (Freeborn County) an area that sustained heavy damage from a long-tracked EF4 tornado.[citation needed] Large tornadoes were sighted in Kiester in Faribault County and near Ellendale and Blooming Prairie in Steele County,Minnesota.[6]
The town of Wadena was also hard hit;the high school was heavily damaged by a tornado that prompted a tornado emergency. Extensive damage was also reported in various other communities in Minnesota as well as in North Dakota from either tornadoes or widespread damaging winds such as in the Rochester,Minnesota,area where several buildings,including homes,were heavily damaged on the northern side of the town. A local emergency was declared in Rochester by the mayor following the storms.[6] The three tornado fatalities in Minnesota were the most for a single outbreak since 1978,and the three EF4 tornadoes were the most on a single day since 1967.[7]
A moderate risk of severe weather was issued for parts of southern Iowa,northern Missouri and northwestern Illinois during the mid-morning of June 18 citing mostly the threat for damaging winds (45%),though a few tornadoes would be possible as CAPE values of 4000 j/kg were forecast across the Missouri and mid-Mississippi Valleys,especially behind the main derecho.[8] Such did not materialize,however.
This strong tornado caused significant damage to electrical infrastructure, destroying four transmission structures, damaging another transmission pole, and shredding two wooden power poles. Some fencing was also damaged.[9]
This strong tornado touched down just south of Dupree and tracked through the west side of town, causing significant structural damage. The roof was torn off the community center, a nearby house and garage were damaged, and large grain bins were crumpled. Several mobile homes were tossed by the winds. Two people were injured..[13]
This brief but strong tornado struck a farmstead, inflicting severe structural damage to two homes and destroying several pole barns. Multiple pieces of agricultural equipment were damaged and a horse was mortally wounded.[16]
This tornado formed just outside of Hettinger and crossed Mirror Lake, where it picked up water before moving into the south side of the city. As it moved through Hettinger, tree branches were broken, windows were shattered at an apartment building, and an automobile was damaged. One vehicle with two occupants was briefly lifted a few inches off the ground and dropped back down as the narrow tornado passed overhead and quickly lifted. No injuries were reported.[18]
A tornado tore some shingles, gutters and trim pieces off of a house. Numerous large tree limbs were downed and several trees were snapped or uprooted.[36]
This tornado produced isolated tree damage near its initial touchdown, with a few trees damaged early in its path. As it approached Constance Lake, the damage became more concentrated and more intense as multiple tree trunks were snapped on both sides of the lake. Farther north, the tornado weakened but continued to cause intermittent damage, including additional tree damage and the destruction of a small lean-to shelter. The tornado then dissipated shortly afterward as the damage path faded.[64]
A tornado caused significant farm damage by tearing a 5,000-bushel steel grain bin off its concrete pad and throwing it approximately half a mile into a nearby field. Along the remainder of its path, several trees were snapped or uprooted within a shelterbelt, and shingles were stripped from the roof of a house, indicating strong localized winds.[65]
A strong tornado moved through rural areas before dissipating. Along its path, multiple farmsteads were heavily damaged, with several grain bins destroyed and numerous trees damaged or removed. The tornado briefly interacted with the 2316 UTC EF2 tornado, wrapping around it before weakening and lifting.[70]
1 death – This intense tornado began in Polk County and tracked northeast for into Red Lake County, producing significant to severe damage along its path. Numerous trees were sheared off or uprooted, and power poles were snapped as the tornado moved toward and through the community of Mentor. Roofs and garages were destroyed, and multiple farm buildings were blown down near the county line. A convenience store and gas station along US 2 were flattened. As the tornado crossed Maple Lake, it caused widespread damage to cabins, campers, boats, and docks, with debris lofted well beyond nearby communities. Additional debris was carried far northeast of Mentor before the tornado finally dissipated. Two injuries also occurred.[71]
This strong tornado developed just west of Kiester and moved north into the northwestern edge of the town, where it produced widespread tree damage. As it continued north, the tornado became multi-vortex and intensified, causing EF-2 damage within a grove of trees where numerous trees were heavily damaged. Farther along the path, additional trees and gravestones were knocked over in a cemetery. The tornado then turned toward the north-northeast and weakened before dissipating to the northeast of Kiester.[72]
This tornado produced widespread tree damage as numerous trees were snapped within shelterbelts along its path. Near Old Mill State Park, the tornado tore the roof off a small shed, scattering debris nearby. In surrounding agricultural areas, row crops exhibited ground scouring, indicating strong localized winds before the tornado dissipated.[75]
A brief tornado moved across open fields and groves of trees. Along its path, numerous power poles were snapped about five feet above the ground, and several dozen trees lost large branches. The tornado was photographed and captured on video by storm chasers as it progressed through the area.[76]
This intense tornado caused a concentrated swath of severe damage as it moved across rural areas, impacting multiple farmsteads along its path. Several homes sustained major structural damage, including one house that was completely destroyed and others that lost large portions of their roofs. Numerous outbuildings were destroyed, with debris scattered across surrounding fields. Hundreds of trees were uprooted or snapped, and some were partially debarked. As the tornado continued into Steele County and changed direction, it maintained a damaging circulation that inflicted additional heavy damage to homes and farm structures before gradually weakening and dissipating.[79]
A tornado touched down near I-35, destroying multiple outbuildings and snapping or toppling numerous large trees as it moved northward. After leaving the area near Geneva, it continued into the Steele County, where additional outbuildings were destroyed, a barn lost its roof, and widespread tree damage persisted. The tornado gradually curved to the north-northwest before weakening and dissipating.[80]
This intense tornado formed west of Hollandale and quickly caused significant damage, completely obliterating a farmstead where nearly all outbuildings were destroyed and the farmhouse was leveled. As it tracked northeast, the tornado tore the roof off another house and destroyed a greenhouse. Near the end of its path, it struck an additional farmstead, damaging several outbuildings, causing minor damage to a residence, and uprooting or snapping a couple dozen trees.[82]
A tornado formed and tracked northeast through rural areas. Early in its path, it struck several farmsteads, snapping numerous trees and destroying a shed along with other outbuildings. As it continued northeast, the tornado moved primarily through open fields and groves, producing additional crop damage and breaking more trees. Damage became more sporadic toward the end of the track as the tornado weakened and eventually lifted.[83]
This intense tornado began and moved northeast, initially causing sporadic damage by breaking a few trees. As it reached a farm along MN 30 west of Blooming Prairie, damage increased, with additional tree damage and impacts to agricultural property. The tornado continued northeast, severely damaging crops, including areas where bean fields were scoured. It then intensified even further to the northwest of Blooming Prairie, where a house was completely leveled, trees were snapped with large sections of bark stripped away, and a pickup truck was lofted and deposited into the home’s basement. Nearby homes sustained lesser damage such as roof and exterior impacts. The tornado weakened and dissipated just west of US 218.[85]
A strong tornado touched down and tracked east-northeast, crossing the earlier damage path left by a stronger tornado from minutes before. Early in its path, a manufactured home was completely destroyed, and a woman inside was thrown roughly 20ft (6.1m) before being rescued alive, but injured, from the debris. As the tornado continued east-northeast, multiple outbuildings were destroyed and numerous trees were snapped or blown down. The tornado then moved into Dodge County, where it continued to cause damage across rural areas northeast of Blooming Prairie. In this area, roofs were partially torn off buildings and additional tree damage was observed before the tornado dissipated.[86]
This strong tornado touched down in extreme northern Chisago County, uprooting trees and snapping large branches before moving northeast into Pine County. As it intensified, the tornado caused increasingly severe damage, including widespread tree snapping and uprooting across mostly recreational land along the St. Croix River Valley. The most intense damage occurred in far southeastern Pine County, where the tornado destroyed a strapped-down mobile home, injuring two occupants. Numerous trees were snapped or uprooted where the tornado crossed Minnesota State Highway 70, and multiple nearby homes sustained significant structural damage. Continuing northeast, the tornado crossed the St. Croix River into Wisconsin, where damage became less severe but still included significant tree damage and damage to at least one home. The tornado ultimately lifted in rural area.[88]
A tornado produced intermittent damage as it tracked through the north side of Rochester. The tornado moved through residential neighborhoods, damaging numerous homes, with at least one residence destroyed and many others sustaining roof and structural damage. The most significant non-residential impact occurred when the tornado struck a large retail store, causing extensive damage to the building. Overall, media reports indicated that at least thirty homes were damaged along the tornado’s path before it dissipated.[89]
At approximately 3:43p.m. CDT (2043UTC),a long-lived tornado touched in northern Douglas County southeast of Urbank. Numerous trees were broken and snapped at EF1 intensity at this point. The tornado would also display strong multiple-vortex characteristics at this time,as it began to cross over into Otter Tail County to the north,where it would cause immense damage across eastern parts of the county. The tornado caused mostly insignificant damage as it passed west of Parkers Prairie,until it approached the small community of Almora. Just to the south a home was destroyed,where a woman was killed. The tornado would approach Almora to the east,narrowly avoiding a direct hit though some homes on the eastern side suffered some levels of damage.[93][94]
The tornado would head more northeast and widen to 2,288yd (2,092m) or 1.3 mi wide as it began to pass southeast of Deer Creek. The massive tornado would level many rural homes in the vicinity,as it continued to intensify even further. Along a county highway,the tornado would become violent as it wiped seven farmhouses off their foundations at EF4 intensity southwest of Bluffton. Many trees were extensively debarked and outbuildings were blown away as the tornado headed due north,passing west of Bluffton and demolishing more farmsteads.[95][96]
After several miles,the storm would start to weaken. At 4:45p.m. CDT (2145UTC) the tornado would dissipate northeast of New York Mills,after being on the ground for more than an hour,and tracking for 39.56mi (63.67km). It was the first of four tornadoes to be classified as EF4 during the historic outbreak.[97]
This narrow,drillbit tornado touched down north to northeast of Mayville,at 3:49p.m. CDT (2049UTC). Approximately 5.5mi (8.9km) to the north of town in rural Traill County,the tornado impacted a farm shop,completely destroying the structure. One man on the property was inside and was covered under piles of rubble,surviving with cuts to his hand. The tornado caused severe damage to the nearby outbuildings on the property,but didn't disturb the contents of a storage building,nor a desk that was located in the middle of the shop.[98][99]
The tornado continued its journey,heading north and approaching the Traill-Grand Forks County border,to the east of Hatton. Many trees in shelterbelts and in farmsteads were snapped,uprooted or sheared off. Law enforcement from the Traill County Sheriff's Office recorded the tornado as it was seen churning across the fields.[100]
A farmhouse was swept off its foundation in the Holmes area,west of Thompson.
The tornado would then start to occlude,but intensify even further as it began approaching the Holmes area in Grand Forks County. Along one road in the vicinity,nine miles west to southwest of Thompson,the tornado would impact a farmstead at peak intensity. The main residence was completely swept off its foundation,leaving only an empty basement behind and numerous trees,and outbuildings nearby were destroyed. A chair was found thrown into a tree,while another had a computer hard drive found embedded within.[101][102][103] After exiting the property,the tornado would continue to weaken and after two miles traveling,would dissipate to the west of Thompson at 4:18p.m. CDT (2118UTC).[104]
This tornado traveled for 17mi (27km) across the two counties,and lasted for nearly half an hour. It was the only violent tornado of the outbreak to occur in North Dakota. It was also the highest rated,reaching winds in the upper echelon of EF4 intensity.[105][106]
Stevens County-Cass County,Minnesota supercell
Stevens County-Cass County,Minnesota supercell
Top: A photo taken of the Wadena EF4 tornado, the strongest tornado the supercell produced. Bottom: A radar loop of the supercell's lifespan. Click to play.
Around 3:20p.m. CDT (2120UTC),a supercell thunderstorm developed over Stevens County,Minnesota,and initially tracked north-northeastward before turning fully northeast. Once over Otter Tail County,the storm intensified and a brief EF1 tornado touched down around 4:58pm CDT (2258UTC) southeast of Deer Creek.[107] The rear-flank downdraft of the storm quickly obscured the tornado from view;however,it was later determined the tornado was on the ground for 1.5mi (2.4km),uprooting small trees and snapping limbs of larger ones.[108] Two minutes prior at 4:56pm CDT (2256UTC),a tornado warning was issued for portions of Becker,Clearwater,Hubbard,Otter Tail and Wadena Counties.[109]
Tornado damage in the city of Wadena.
A few minutes after the warning was issued,the second and strongest tornado the storm produced,rated low-end EF4 touched down about 3mi (4.8km) southwest of the city of Wadena,in Otter Tail County.[107] Within three minutes of forming,this violent multiple vortex tornado rapidly intensified,producing extreme tree damage with many trees snapped or uprooted as it moved northeast. Before crossing the Otter Tail-Wadena County border,the storm's width had reached 1,936yd (1,770m) or 1.1 mi.[110] The tornado then struck the western side of Wadena,causing widespread severe damage. Two houses were blown away from their foundations and many other houses and businesses were destroyed by this large wedge tornado. Many other structures were damaged to lesser degrees as well. Wadena-Deer Creek High School lost large sections of its roof and suffered extensive damage to its interior. A bus garage and an apartment complex were also damaged and school buses were thrown into the air. Trees were also debarked and snapped throughout the town. Cars were tossed by the tornado and headstones were toppled at a cemetery in Wadena. About 20 people were injured. Damage from the tornado reached $32million,making it the most destructive of the outbreak.[111]
[112] In light of the damage in the city,a tornado emergency was declared for Sebeka and Nimrod;however,substantial damage never took place in these areas.[109] Continuing northeastward,the tornado gradually weakened before dissipating at 5:16pm CDT (2316UTC),ending its 10mi (16km) track.[112]
At 5:30pm CDT (2230UTC),a third tornado,rated EF0,touched down within the supercell,this time roughly 1.5mi (2.4km) south-southwest of Nimrod. Over the following 18minutes,this storm made several touchdowns along a 14.8mi (23.8km) track that continued into Cass County.[107] Damage from this tornado was largely limited to broken tree limbs.[113] Continuing northeast,the supercell eventually dissipated over Cass County around 6:30pm CDT (2330UTC).[107]
This large,violent tornado touched down at 6:33p.m. CDT (2333UTC),and passed by areas west and north of the Albert Lea area,producing very intense damage early in its life where a home on the edge of the circulation sustained roof and siding damage,a barn was destroyed down to its brick foundation,a vehicle was flipped,and some trees showed debarking.
As the tornado intensified further across Freeborn County,it caused extensive crop damage in a wide swath with fields raked down to bare stalks. At several farmsteads,the tornado completely destroyed multiple swine barns,blew away empty grain bins,toppled a tall wind turbine tower,and left soybean fields nearly unrecognizable. The tornado maintained strong intensity while toppling silos,flattening additional farm buildings,and knocking down large numbers of trees.
Aerial view of field scouring in western Freeborn County.
It then reached its peaked strength north of Conger as it completely destroyed a farmhouse,barn,and other buildings,extensively debarked trees,and tumbled a car more than half a mile into an open field. After slightly weakening,the tornado continued to destroy and severely damage additional homes,barns,and grain bins,including rotating a house off its foundation. Debris from destroyed structures was lofted long distances,with sheet metal carried as far as I-90,which the tornado later crossed while re-intensifying. Several farmsteads suffered total losses in this phase,including homes and multiple barns,and the tornado widened to nearly a mile across.
Farther north,the tornado gradually weakened but continued to damage grain bins,trees,and farm structures before narrowing and dissipating west of Hartland,along a 16.91mi (27.21km) path at 7:15p.m. CDT (0015UTC). One woman was killed inside a manufactured home near Armstrong. Fourteen people were injured.[114][115]
Canadian Prairies flooding
North of the tornadic supercells,heavy rain affected areas of the southern Canadian Prairies where at least 4 to 6in (100 to 150mm) of rain fell across southern Alberta and Saskatchewan on June 16–17 causing widespread flooding. A state of emergency was declared at the Blood Tribe Indian Reserve where people were stranded in homes due to flood waters.[116] Nine municipal governments in Alberta also declared state of emergencies due to the flooding as did some areas of southern Saskatchewan. Portions of the Trans-Canada Highway were closed for 3km (1.9mi) due to flooding along the border between Saskatchewan and Alberta on June18 and remained shut down until June26.[117] At times,30,000 to 40,000 acres (12,000 to 16,000ha) of land around the highway was submerged by flood waters.[118] Other roads and bridges were flooded and in some cases washed away. The Cypress Hills Interprovincial Park was also left inaccessible.[117] In and around Medicine Hat,Alberta,most residents were forced to evacuate as water reached depths of 2ft (0.61m). Agricultural areas sustained considerable losses throughout the region as entire harvests were lost to the floods and much of the growing season had past leaving no time to re-plant crops.[119] Throughout Alberta,losses reached C$69million ($70.3million),including C$54million ($55million) in Medicine Hat alone. A total of 340 homes were affected by the floods,11 of which had to be condemned. Additionally,490ft (150m) of the Trans-Canada Highway had been washed out.[118][120]
Due to the prolonged shut down of the Trans-Canada Highway,many businesses along the road experienced hundreds of thousands of dollars in lost profits. Some stores reported a 95percent decrease in income,roughly C$4,000 daily.[118] On June25,some residents in Medicine Hat were given C$3,000 in aid from the Provincial Disaster Assistance Program. In the weeks after the disaster,reconstruction of roadways and bridges washed out by the floods began. Engineers estimated that it would take four to five weeks to repair the Trans-Canada Highway.[120]
June 18 Midwest derechos
A NWS enhanced radar image of the two derechos in the Midwest on the night of June 18th,2010.
Following the prolific tornado outbreak,a mesoscale convective system developed across eastern Nebraska in the Omaha area during the morning of June18. It gradually intensified before moving into the Des Moines area near midday.[121] The bow echo intensified into an intense progressive derecho over eastern Iowa and propagated eastward into northern Illinois and southern Wisconsin that afternoon. Extensive damage was reported from the derecho,including in the Chicago metropolitan area as the derecho reached that region shortly before 4:00 pm CDT (2100 UTC).[122] Nearly 300,000 customers lost power and windows were blown out of high-rise buildings in downtown Chicago.[123] Some counties utilized warning sirens due to the derecho's extreme winds,despite the fact that there was no formal tornado warning.[124]
The derecho continued eastward,maintaining its strength over southern Lower Michigan and northern Indiana in the early evening. Winds as high as 90mph (140km/h) were reported in southwest Michigan with widespread damage over the region).[122] The storm knocked out power to nearly 300,000 customers of Commonwealth Edison in the Chicago area. Windows were blown out of several high rises in downtown Chicago,including the tallest building,the Willis Tower. [125] More than 100,000 lost power in the immediate Detroit region including in Oakland and Wayne Counties,[126] over 75,000 in the Grand Rapids/Kalamazoo regions [127] and over 50,000 in northern Indiana and southwestern Michigan.[128] The derecho finally weakened and rapidly dissipated as it reached Lake Erie.
During the evening of June18,a second,weaker derecho formed over Iowa and began following a path similar to the first one,and by 8:45 pm CDT (0145 UTC) the storm was moving across Illinois causing damage in areas already affected by the initial derecho event before weakening and dissipating.[122] One fatality was reported from the event in northern Indiana and in Dexter,Michigan.[122] This storm also produced dangerous lightning with two homes hit by lightning in Dexter and Scio Township in Michigan.
↑John Chris Broyles and Jonathan M. Garner (June 16, 2010). "Jun 16, 2010 0600 UTC Day 1 Convective Outlook". Storm Prediction Center. National Oceanic and Atmospheric Administration. Retrieved June 19, 2011.
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National Weather Service in Grand Forks, North Dakota (2010). Minnesota Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Grand Forks, North Dakota (2010). Minnesota Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Grand Forks, North Dakota (2010). Minnesota Event Report: EF0 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Grand Forks, North Dakota (2010). Minnesota Event Report: EF0 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Grand Forks, North Dakota (2010). Minnesota Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF0 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF0 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Grand Forks, North Dakota (2010). Minnesota Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF0 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Des Moines, Iowa (2010). Iowa Event Report: EF0 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Grand Forks, North Dakota (2010). Minnesota Event Report: EF0 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF0 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF2 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Grand Forks, North Dakota (2010). Minnesota Event Report: EF3 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Grand Forks, North Dakota (2010). Minnesota Event Report: EF3 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF2 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Grand Forks, North Dakota (2010). Minnesota Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF0 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Grand Forks, North Dakota (2010). Minnesota Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF0 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF4 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF3 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF2 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF3 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Duluth, Minnesota (2010). Minnesota Event Report: EF0 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF3 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF2 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF0 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF0 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF0 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Duluth, Minnesota (2010). Minnesota Event Report: EF2 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Duluth, Minnesota (2010). Wisconsin Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in La Crosse, Wisconsin (2010). Minnesota Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Duluth, Minnesota (2010). Wisconsin Event Report: EF0 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in La Crosse, Wisconsin (2010). Wisconsin Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Des Moines, Iowa (2010). Iowa Event Report: EF0 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Grand Forks, North Dakota (2010). Minnesota Event Report: EF4 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF1 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Grand Forks, North Dakota (2010). Minnesota Event Report: EF4 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
National Weather Service in Grand Forks, North Dakota (2010). North Dakota Event Report: EF4 Tornado (Report). National Centers for Environmental Information. Retrieved December 15, 2025.
National Weather Service in Grand Forks, North Dakota (2010). North Dakota Event Report: EF4 Tornado (Report). National Centers for Environmental Information. Retrieved December 15, 2025.
National Weather Service in Grand Forks, North Dakota (2010). North Dakota Event Report: EF4 Tornado (Report). National Centers for Environmental Information. Retrieved December 15, 2025.
National Weather Service in Grand Forks, North Dakota (2010). North Dakota Event Report: EF4 Tornado (Report). National Centers for Environmental Information. Retrieved December 15, 2025.
National Weather Service in Grand Forks, North Dakota (2010). North Dakota Event Report: EF4 Tornado (Report). National Centers for Environmental Information. Retrieved December 15, 2025.
National Weather Service in Grand Forks, North Dakota (2010). North Dakota Event Report: EF4 Tornado (Report). National Centers for Environmental Information. Retrieved December 15, 2025.
12"Severe Weather Statement: Tornado Warning". National Weather Service Office in Grand Forks, North Dakota. Iowa Environmental Mesonet National Weather Service. June 17, 2010. Retrieved June 19, 2011.
↑National Weather Service in Chanhassen, Minnesota (2010). Minnesota Event Report: EF4 Tornado (Report). National Centers for Environmental Information. Retrieved December 18, 2025.
↑National Weather Service in Chanhassen, Minnesota (2010). conger_armstrong_manchester(PDF) (Report). Retrieved December 19, 2025.
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