Tornado outbreak of June 8-11, 2020

Tornado outbreak of June 8-11, 2020

EF3 tornado doing damage in Dekalb County, IL on June 10
Type:	Unknown
Active:	June 8-11, 2018
Duration of tornado outbreak1:	4 days, 6 hours, 12 minutes
Maximum rated tornado2:	EF4 tornado
Highest winds	Unknown
Tornadoes confirmed:	141
Damage:	$1.66 billion (2018 USD)
Injuries:	Unknown
Fatalities:	41
Areas affected:	North Dakota, South Dakota, Minnesota, Wisconsin, Illinois, Indiana, Michigan, Ohio
1Time from first tornado to last tornado 2Most severe tornado damage; see Fujita scale

As a powerful shortwave trough dropped into the northern United States and move east-southeast, the stage was being set for a multi-day tornado outbreak in the upper Midwest. The Storm Prediction Center had every day on its 4-8 outlook marked for severe weather on June 5. June 8 featured high instability and good shear, but a cap that didn't erode until mid afternoon. The SPC had an enhanced risk with a 10% hatched tornado risk in place for much of central and east North Dakota and South Dakota, with a 5% risk extending into northern Nebraska. 24 tornadoes touched down that day, including one EF4. The most prolific day of the outbreak took place on June 9. A strong surface low was located near the North Dakota/Minnesota border, with a cold front draping down through west MN into northern IA. A warm front in central/north MN was also expected to be a focus for tornadic activity later that day. 0-1 km helicity was in the 300-500 m2/s2 range and MLCAPE exceeded 4,000 j/kg in some spots. The SPC issued a moderate risk with a 15% hatched tornado risk for much of central and southern MN, which was eventually upgraded to a high risk at the 2000z outlook. A PDS tornado watch was issued and several long-tracked, intense supercells developed spawning 54 tornadoes, including 8 EF4's. After dark, storms congealed into an MCS, and a few QLCS tornadoes occurred. By morning, the MCS had weakened, and rapid destabilization occurred in north Illinois and southern Wisconsin. The surface low had moved southeast quite a bit, now positioned in northeast Iowa. Again, a moderate risk was issued with a 15% hatched tornado risk. 31 tornadoes touched down, including two EF4's, one of which had a path length of about 91 miles. Activity became sloppy and another MCS formed that evening, but it weakened before dawn on June 11. Another moderate risk was issued that day. The surface low was located in extreme southwest Michigan, and the whole warm sector was primed for supercells and tornadoes. 32 tornadoes touched down, including two long-tracked EF4's. Some areas hit in the April 23, 2018 Ohio Tornado Outbreak were hit again in this outbreak. 41 people died in the outbreak, and it left $1.66 billion in damages. 141 tornadoes were confirmed over the four day period, 13 of which were violent.

Tornado Statistics

 

Tornadoes by Day

State	Total	EF0	EF1	EF2	EF3	EF4	EF5
June 8	24	7	8	6	2	1	0
June 9	54	11	9	16	10	8	0
June 10	31	6	15	4	4	2	0
June 11	32	12	8	5	5	2	0
Total	141	36	40	31	21	13	0

List of Confirmed Tornadoes

June 8 Event

Outbreak Death Toll

State	Total
Minnesota	23
Illinois	8
Indiana	5
Iowa	2
Ohio	2
Michigan	1
Totals	41

June 9 Event

List of confirmed tornadoes - June 8, 2018
EF#	Location	County	Time of Origin (UTC)	Path length	Damage
North Dakota
EF2	S of Napoleon	Logan	2147	7.2 mi	Stovepipe tornado remained in mainly open areas. A farm home was severely damaged, however. Formed near the triple point in central North Dakota.
EF1	SW of Streeter to Medina	Stutsman	2208	18.97 mi	Wedge tornado remained in mainly rural areas as it moved north-northeast. Spawned by a supercell along the warm front.
EF0	E of Fort Yates	Emmons	2213	4 mi	Weak tornado remained in open fields.
EF3	Jamestown	Stutsman	2249	2.89 mi	Intense yet relatively brief tornado that formed along the warm front in east central North Dakota. Several homes and businesses were destroyed on the south side of town at mid-range EF3 strength, many with only interior walls left standing. 39 people were injured. The tornado cost about $10 million in damages.
EF1	Linton area	Emmons	2316	3.55 mi	A few mobile homes were damaged south of Linton and trees were downed. Spawned by the same supercell that produced the tornado east of Fort Yates.
EF1	N of Guyson	Logan	2333	8.11 mi	Weak tornado remained in open fields. Two outbuildings were destroyed and a farm was damaged.
EF0	N of Guyson	Logan	2338	1 mi	Satellite tornado observed by chasers to the previous event. Produced no damaged.
EF0	SW of Jud (1st tornado)	LaMoure	0028	5 mi	Produced no known damage. Spawned by the Guyson supercell.
EF1	SW of Jud (2nd tornado)	LaMoure	0032	.8 mi	Occured simultaneously with the previous tornado. Three outbuildings sustained minor damage and telephone poles were downed before the tornado abruptly dissipated.
EF2	W of Daily	Barnes	0112	9.5 mi	Dozens of trees were denuded and snapped. A pick-up truck was rolled six times and a poorly constructed home was destroyed.
South Dakota
EF4	ENE of Java to SE of Hillsview	Walworth, Edmunds, McPherson	2221	14.6 mi	Large and violent tornado. Caused severe ground scouring as it passed north of Bowdle. Two farmsteads were completely swept away and a well-constructed home was flattened. An isolated grove of trees was severely debarked, as well. Damage was otherwise limited.
EF3	ENE of Hillsview to E of Long Lake	McPherson	2258	25.12 mi	Touched down soon after the Java to Hillsview EF4 lifted. Remained in open farmland for much of its lifetime, however a tractor was thrown over 250 yards and crushed. Several outbuildings were completely destroyed and grain bins were toppled and crushed. An irrigation pivot was also severely mangled.
EF0	NE of Hillsview	McPherson	2309	3 mi	Satellite tornado to the previous event.
EF2	WSW of Agar to SSE of Seneca	Sully, Potter, Faulk	2312	37.3 mi	Long-tracked tornado that was on the ground for nearly an hour and a half. It began in rural areas outside of Agar, and proceeded into the small town. Almost every building in Agar sustained some level of damage, the worst of which was rated EF2. The tornado didn't damage any other structures after hitting Agar, and continued in open fields until dissipating south of Seneca.
EF0	W of Fort Thompson	Lyman	2320	1 mi	Brief tornado confirmed by chasers.
EF0	E of Winner	Tripp	2345	2.51 mi	A patch of shrubs and an outbuilding sustained minor damage.
EF2	Aberdeen	Brown	2359	10.39 mi	Tornado began in fields southwest of Aberdeen and proceeded north-northeast. As it neared the west side of the city, a PDS tornado warning was issued. Several homes in the Derian Subdivision were severely damaged at high-end EF2 strength. To the northeast, numerous other homes sustained EF2 damage on the southwest side of Aberdeen. It crossed Route 12 and threw a parked car one block, as well as heavily damaging Lincoln Elementary School. Many more businesses and homes took damage on the northwest side of town before the tornado returned to rural areas north of the city, where the roof of the Odde Ice Arena caved in. It dissipated west of the Devian Villa Development, injuring 103 people and leaving $100 million in damages.
EF2	W of Stickney	Aurora	0018	6.12 mi	Long-lived, large, nearly stationary wedge tornado. Began and immediately inflicted EF2 damaged to a farm home and several outbuildings. Turned north and passed very close to another farm house and did EF1 damage to it. At that point it stopped moving and grew to almost 1.5 miles wide, before looping around and denuding trees and destroying outbuildings just west of Stickney. 1 person was injured.
EF1	ESE of Seneca	Faulk	0050	7.23 mi	Began shortly after the Agar EF2 lifted. A small farm was damaged and a car was pushed off of Route 212.
EF1	W of St. Lawrence	Hand	0144	4.4 mi	A church and three homes were damaged as the tornado passed over Route 14 between Miller and St. Lawrence. The roof of the church was thrown about 200 yards to the northeast in a field.
EF1	Kampeska	Codington	0251	12.4 mi	A few double wide homes sustained roof and garage damage in Kampeska. Several more homes were damaged on the west side of Lake Kampeksa, and three people were injured. Telephone poles were downed, as well.
EF1	N of Lake Kampeska	Tripp	0335	1.68 mi	Outbuildings were damaged and several trees were downed. Formed as the Kampeska tornado dissipated.
Nebraska
EF2	Bassett area	Rock	0134	5.88 mi	Slow-moving, large, high-end EF2 tornado that did significant damage to the southern half of Bassett. Several homes lost their rooves and some had only a few walls remaining. 28 people were injured.
EF0	N of Atkinson	Holt	0217	0.2 mi	Local sherif reported a tornado. Produced no known damage other than to crops.

June 10 Event

List of confirmed tornadoes - June 9, 2018
EF#	Location	County	Time of Origin (UTC)	Path length	Damage
Minnesota
EF0	E of Forada	Douglas	1837	1.34 mi	Short-lived tornado confirmed by law enforcement. A few trees were downed, but damage was otherwise minimal.
EF3	S of Danvers to Benson to Swift Falls	Swift	1909	18 mi	1 death - this EF3 tornado began south of Danvers in rural areas. It quickly grew to a large wedge tornado and completely destroyed a farm house and outbuildings near it. Trees were slightly debarked as it crossed the Chippewa River and neared Benson. It entered the southern part of Benson where several homes were left with only interior walls standing, and grain bins were toppled. Two homes on 10th street were nearly flattened, and one person was killed there. A few businesses on Route 12 sustained significant damage, and a farming plant east-northeast of town was heavily damaged. It continued northeast through rural areas until dissipating near Swift Falls.
Iowa
Wisconsin

June 11 Event

List of confirmed tornadoes - June 10, 2018
EF#	Location	County	Time of Origin (UTC)	Path length	Damage
Wisconsin
Illinois

List of confirmed tornadoes - June 11, 2018
EF#	Location	County	Time of Origin (UTC)	Path length	Damage