Cheyenne, WY

Weather Forecast Office

June 22, 2013 Severe Weather Outbreak

Overview

The day of June 22, 2013 the Storm Prediction Center identified most of southeast Wyoming and Western Nebraska as a "slight" risk for severe storms. Storms began to develop into the mid afternoon and producing a tornado an EF 1 tornado at 3:54 PM. The tornado touched down west of La Grange, WY and moved southeast over the Nebraska border. The tornado dissipated north of Harrisburg, NE. Two other weaker tornadoes developed during the afternoon southwest of Wheatland, WY and Kimball, NE.

On Highway 151, west of La Grange. Looking NNW at the tornado

Roger Edwards SPC

Arrow Showing rotation area around the tornado.

Roger Edwards SPC

Dark area in lower middle corresponded to tight zone of rapid rotation relative to remainder of precip drum.

Roger Edwards SPC

Faint, fuzzy condensation vortices were seen moving around on both sides of stubby funnel right before this photo

Roger Edwards SPC

Tornado
Photos & Video
Radar
Storm Reports

Tornadoes:

Tornado - Harrisburg, NE
Banner County

Date	June 7, 2012
Time (Local)	1:56 to 7:02 PM
EF Rating	1
Est. Peak Winds	90 to 100 MPH
Path Length	20 miles
Max Width	N/A
Injuries/Deaths	0

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

Photos & Video:

Banner County Storm Damage

Tree Damage in Banner County

NWS Cheyenne

Roof Blown off a nearby Barn

NWS Cheyenne

Tree Lodged in the Side of a Home

NWS Cheyenne

Radar:

Header


Reflectivity loop from 446 PM to 528 PM as the supercell thunderstorm and associated tornado moved to the southeast.	Storm relative velocity loop from 446 PM to 528 PM. The green-red couplet shows the strong rotation of the supercell thunderstorm and tornado.

Storm Reports

Storm Prediction Center Outlooks


SPC Day 1 Categorical Outlook	SPC Day 1 Tornado Outlook	SPC Day 1 Hail Outlook

Storm Reports

Storm Reports	Description
1:58 PM 5 S Wheatland	Tornado touched down briefly 5 miles south of Wheatland. On the ground for approx. 1 minute before lifting.
3:54 PM 10SW Veteran	Tornado touched down at 3:54 PM.
4:50 PM 17 WNW Harrisburg	Tornado developed 17 WNW Harrisburg at about 4:50 PM and tracked ESE before dissapating.
5:00 PM 14 NW Harrisburg	Tornado produced damage at a house 7 miles north and 14 miles west of Harrisburg, NE.
7:00 PM Kimball	Tornado was on I 80, and lifted at 7:02 PM.

June 22, 2013 Storm Reports

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