Aberdeen, SD

Weather Forecast Office

June 12-13 & June 14, 2022 Severe Weather Summary

Overview

June 12-13: Severe thunderstorms transitioned from a supercell to a line of storms over western and then south central South Dakota during the evening of June 12th. In addition to destructive straight-line winds, these storms produced two confirmed EF2 tornadoes across Jones County in the "bookend vortex" section of the line. A third tornado was observed west of Lower Brule, as the complex continued to track east into the early morning of June 13th. Later in the night, a second line of training thunderstorms would set up over parts of Jones and Stanley counties, resulting in areas of flooding. Additionally, a small area of low pressure developed behind the system. This is referred to as a "wake low" and resulted in additional non-thunderstorm winds and wind damage over parts of eastern South Dakota.

June 14: Right after midnight on June 14th, storms developed over south central South Dakota and quickly became wind producers. As the storms intensified and tracked northeast, the winds became increasingly extreme. Peak winds would occur between 4 and 5 am as the storms tracked across parts of north central and northeast South Dakota and into southeast North Dakota. A personal weather station near Roscoe, SD recorded winds at 120 mph. Numerous trees and powerlines were downed, widespread reports of roof, outbuilding and grain bin damage were noted, and 16 steel towers were downed approximately 7 miles WSW of Frederick. Damage was widespread.

Due to the damage from several rounds of significant severe weather across South Dakota from June 11-14th, a Presidential Disaster Declaration was approved on August 2nd for a number of counties.

An EF2 tornado west of Okaton in Jones County. Image courtesy of Roger Hill.

Surveyed Tornadoes, Extreme Wind
Photos, Video
Radar, Satellite
Storm Reports
Rainfall, Lightning
Environment, Other

Surveyed Tornadoes, Extreme Wind:

Tornado #1 - NW of Murdo
Jones County

Date	6/12/2022
Time (Local)	10:28-10:38 PM CDT
EF Rating	EF2
Est. Peak Winds	115 mph
Path Length	3.97 miles
Max Width	80 yards
Injuries/Deaths	0
Summary: The path was clearly noted through a shelter belt before damaging two farms. Damage included roof panels ripped off homes, outbuildings and grain bins completely destroyed, and wide swaths of debris was tossed and impaled into the ground.

Track Map

Track Map EF-Scale


Radar reflectivity (left) and storm-relative velocity (right) at 10:38 PM CDT.	Damage as seen on the NWS survey	Damage as seen on the NWS survey	Damage as seen on the NWS survey

Tornado #2 - West of Okaton
Jones County

Date	6/12/2022
Time (Local)	10:15-10:16 PM CDT
EF Rating	EF2
Est. Peak Winds	115 mph
Path Length	0.48 miles
Max Width	30 yards
Injuries/Deaths	0
Summary: A brief tornado touchdown ripped five large grain bins from their base. The bins were propelled into two machine sheds and eventually carried about a half mile to the east south east. Other debris, including a water tank and a dumpster were also tossed east. A grain auger was tossed.

Track Map

Track Map EF-Scale


Radar reflectivity (left) and storm-relative velocity (right) at 10:20 PM CDT.	Damage as seen on the NWS survey with South Dakota Highway Patrol Drone Team	Damage as seen on the NWS survey with South Dakota Highway Patrol Drone Team	Damage as seen on the NWS survey with South Dakota Highway Patrol Drone Team

Wind Damage - Van Metre Road
Jones County

Date	6/12/2022
Time (Local)	10:30-10:45 PM CDT
Est. Peak Winds	115-130 mph
Injuries/Deaths	0
Summary: Significant damage occurred along Van Metre road between 234th St and 237th St. Eyewitness accounts and radar data suggest severe winds stronger than 60 mph lasted for 15 minutes straight with no reprieve. At the peak, winds are estimated to range from 115 to 130 mph. This is concurrent with major loss of roof panels on homes at multiple farms. Damage was extensive.

Damage Photo

Track Map

Damage as seen on the NWS survey with South Dakota Highway Patrol Drone Team


Radar reflectivity (left) and storm-relative velocity (right) at 10:36 PM CDT.	Damage as seen on the NWS survey	Damage as seen on the NWS survey with South Dakota Highway Patrol Drone Team	Damage as seen on the NWS survey with South Dakota Highway Patrol Drone Team

The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:

EF0 Weak 65-85 mph	EF1 Moderate 86-110 mph	EF2 Significant 111-135 mph	EF3 Severe 136-165 mph	EF4 Extreme 166-200 mph	EF5 Catastrophic 200+ mph

Photos: June 12-13


Jun 12th Jones County tornado damage. Photo courtesy of the South Dakota Highway Patrol.	Jun 12th Jones County tornado damage. Photo courtesy of the South Dakota Highway Patrol.	Jun 12th Jones County storm damage. Photo courtesy of the South Dakota Highway Patrol.	Jun 12th Jones County tornado damage. Photo courtesy of the South Dakota Highway Patrol.

Jun 12th Jones County tornado damage. Photo courtesy of the South Dakota Highway Patrol.	June 13, early morning "wake low" wind damage near Andover. Photo courtesy of Angela Herrick.	June 13, early morning "wake low" wind damage near Andover. Photo courtesy of Angela Herrick.	June 13, early morning "wake low" wind damage in Conde. Photo courtesy of Bonnie Mortenson.

Photos: June 14


June 14th storm damage 6 miles east and 1 mils south of Leola. Photo courtesy of Jackie Kessler.	June 14th storm damage near Frederick. Photo courtesy of Deb Witte.	June 14th storm damage near Frederick. Photo courtesy of Jamie Voeller.	June 14th storm damage in Frederick. Photo courtesy of Jamie Voeller.

June 14th storm damage in Frederick. Photo courtesy of Tia Louise.	June 14th storm damage four miles south of Leola. Photo courtesy of Tami Rath.	June 14th storm damage in Roscoe. Photo courtesy of Leland Triechel.	June 14th storm damage two miles south of Roscoe. Photo courtesy of Savanah Wolff.

Radar, Satellite

Radar reflectivity from 10 PM CDT on Sunday, June 12 to 4 AM CDT on Monday, June 13

Radar reflectivity from 1 AM CDT to 6 AM CDT on Tuesday, June 14

Storm Reports

Locations of preliminary reports of severe weather across the area, including damaging straight-line winds, large hail, heavy rain and tornadoes.

June 12-13

Click for an interactive map: June 12 and 13.

June 14

Click for an interactive map for June 14.

Rainfall, Lightning

June 12-13

Approximate rainfall totals during the calendar days of June 12th and 13th, from the Midwestern Regional Climate Center

24-hour cloud-to-ground lightning strikes from 5pm 6-12 through 5pm 6-13, from the National Lightning Detection Network. Yellow icons indicate positively charged lightning strikes, and red negatively charged.

June 14

Approximate rainfall totals during the calendar day of June 14th, from the Midwestern Regional Climate Center

24-hour cloud-to-ground lightning strikes from 4pm 6-13 through 4pm 6-14, from the National Lightning Detection Network. Yellow icons indicate positively charged lightning strikes, and red negatively charged.

Environment, Other

June 12-13 Environmental Data


1am, June 13th, a weak, yet distinguishable low over south central South Dakota	10pm, June 13th, supercell composite parameter.	10pm, June 13th, significant tornado parameter.	10pm, June 13th, large hail parameter.

June 14 Environmental Data


7am, June 14th, a low pressure system was situated over northeast South Dakota.	5 am, June 14th, ML CAPE	5 am, June 14th, Downdraft CAPE	5 am, June 14th, 0-3 KM Shear

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