Sioux Falls, SD

Weather Forecast Office

June 14th Severe Weather Event

Overview

A line of severe thunderstorms developed late this morning and moved across parts of southwest Minnesota and northwest Iowa through the afternoon hours. There were 2 confirmed tornado touchdowns and also widespread wind damage as the line of storms moved northeastward. The damage was caused by winds of 60 to 70 mph. Heavy rain also brought flash flooding to portions of northwestern Iowa.

Tornado
Wind & Hail
Radar
Storm Reports
Rainfall

Tornadoes:

Tornado #1 - Pipestone, Minnesota
Pipestone

Date	June 14, 2016
Time (Local)	1:52-2:02 PM CDT
EF Rating	EF-0
Est. Peak Winds	80 mph
Path Length	3.81 miles
Max Width	20 yards
Injuries/Deaths	0
Summary: The tornado touched down approximately 1/2 mile west of Pipestone, MN. The tornado damaged a pole barn as it moved to the north.

Track Map

Track of the tornado near Pipestone Minnesota


Picture of tornado taken by local Pipestone resident and used with permission.	Picture of tornado taken by local Pipestone resident and used with permission.	Reflectivity at 1:54 PM CDT The red dot denotes the approximately location of the tornado.

The path of the tornado can be seen by the dark line in the middle of the corn field where corn was flattend as the tornado moved through the field.		Storm Relative Velocityat 1:54 PM CDT The red dot denotes the approximately location of the tornado.

Tornado #2- 7 miles south of Lake Park, Iowa
Dickinson

Date	June 14, 2016
Time (Local)	2:22-2:23 PM CDT
EF Rating	EF-0
Est. Peak Winds
Path Length	2000 feet
Max Width
Injuries/Deaths	0
Summary: The tornado touched down approximately 7 miles south of Lake Park, Iowa. The tornado damaged a small shed as it moved northeast. The tornado lifted less than one-half mile northeast of the farmstead..

Track Map

Map of tornado location 7 miles south of Lake Park, Iowa

Reflectivity image from 2:21 PM CDT 7 miles south of Lake Park, Iowa

Reflectivity at 2:21 PM CDT

The black arrow denotes the approximately location of the tornado.

Velocity at 2:21 PM CDT

The black arrow denotes the approximately location of the tornado.

Track Map

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

Wind:

A line of severe thunderstorms moved across southwestern Minnesota and northwestern Iowa. These storms did tree damage as well as some damage to buildings around Worthington, Lakefield, and Mountain Grove in southwestern Minnesota and across Dickinson County in northwestern Iowa. A wind gust of 63 mph was recorded at Spencer, Iowa at 2:30 PM CDT

Wind

Here are photos of wind damage across Dickinson County, Iowa.


Tree damage in Arnolds Park, Iowa. Photo taken by Kirt Carstens.	Tree damage in Arnold's Park, Iowa.

Trees across the road in Dickinson County, Iowa	Trees across another road in Dickinson County, Iowa

Damage to a structure in Dickinson County, Iowa	Tree uprooted onto home in Dickinson County, Iowa

Radar:

Radar images of severe winds over portions of southwestern Minnesota and northwestern Iowa.


Radar reflectivity image as damaging winds approach Worthington, Minnesota around 2:27 PM CDT.	Radar velocity image as damaging winds approaching Worthington, Minnesota around 2:27 PM CDT.	Radar reflectivity image as damaging winds approach Spirit Lake Iowa around 2:32 PM CDT.	Radar velocity image as damaging winds approaching Spirit Lake, Iowa around 2:32 PM CDT.

Radar reflectivity image as damaging winds approach Lakefield, Minnesota around 2:46 PM CDT.	Radar velocity image as damaging winds approaching Lakefield, Minnesota around 2:46 PM CDT.	Radar reflectivity image as damaging winds move north of Mountain Lake, Minnesota around 3:18 PM CDT.	Radar velocity image as damaging winds move north of Mountain Lake, Minnesota around 3:18 PM CDT.

Storm Reports

Table of Severe Weather Reports

Rain Reports

The heaviest rainfall in the last 24 hours fell over portions of northwestern Iowa and southwestern Minnesota where 2 to 4 inches of rain was observed. Portions of south central South Dakota as well as the Big Sioux River Valley north of Sioux Falls had from one-half to 1 inch of rainfall.

Precipitation from 7 pm June 13 to 7 pm June 14, 2016

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