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EF1 tornado in Laramie County, Wyoming

Tornado June 12, 2017 · Laramie County, Wyoming

EF1
Rating
1.5 mi
Path length
80 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 80 yards (0.05 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF1 means. On the Enhanced Fujita scale, EF1 is moderate damage: roofs badly stripped, mobile homes pushed off foundations or overturned, windows broken, consistent with estimated gusts of 86–110 mph. The rating comes from a survey of the worst damage after the storm, not from a wind measurement, so it says as much about what the tornado hit as about how strong it was.

What the National Weather Service wrote

A short-lived tornado touched down just north of the Colorado state line to the southwest of Pine Bluffs along County Road 161. It was on the ground for approximately 4-7 minutes. A fifth-wheel horse trailer was lofted into the air for 50 yards sustaining significant damage. A small farm outbuilding was also destroyed (DI 1, DOD 7).

The wider storm

One of the most significant severe weather episodes to affect southeast Wyoming and the western Nebraska Panhandle occurred on the afternoon and early evening of Monday 12 June 2017. Eleven confirmed tornadoes, hail to grapefruit size, and damaging winds were observed. Supercell thunderstorms developed during the early afternoon along Interstate 25 between Fort Collins, CO and Wheatland. Lifting northeast, these thunderstorms spread into the southeast Wyoming plains late in the afternoon and into the western Nebraska Panhandle during the evening. Two people suffered injuries with an EF-2 rated tornado north of Torrington near the Wyoming/Nebraska stateline.

Began near (82v)pine Bluffs Airport (41.0296, -104.1333).

Other tornadoes from the same storm system

5 more tornadoes the National Weather Service filed under this storm episode.

Source: NOAA Storm Events Database, event 721620. Narratives are written by the National Weather Service forecast office that issued the report.

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