June 20th, 2018 - Perry, IA Tornado

Overview

An upper level low pressure system sat just west of central Iowa on June 20th with a surface low tracking into southwest Iowa. The systems ushered in showers and storms throughout Iowa. The environment, while not overly supportive of damaging straight line winds or severe hail development, it was highly supportive of strong low level rotation. With lifted condensation levels well under 1000m as well, conditions were ripe for small rotating storms and associated funnel clouds and short lived tornadoes. While a number of tornado reports were received and confirmed across central and north central Iowa, only one tornado, just west of Perry, Iowa, was associated with reported damage as of Thursday morning. Storm survey damage indicated a transient tornado that essentially "skipped" along its path causing sporadic tree damage. In most instances, pine trees were uprooted along with medium to large tree branches down. Sporadic crop damage was also observed along the path.

Tornado

Tornadoes:

Tornado - Perry
Dallas County

Date	June 20th, 2018
Time (CDT)	~2:17pm - 2:28pm
EF Rating	EF-0
Est. Peak Winds	82 mph
Path Length	2.63 mi
Max Width	Unknown
Injuries/Deaths	0/0
Summary: Very intermittent damage as tornado tracked north from the Perry Municipal Airport. Damage indicated likely "skipping" tornado along the path due to lack of continuous damage path.

Track Map


2:17pm CDT	2:21pm CDT	2:26pm CDT	2:28pm CDT

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

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