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EF0 tornado in Elbert County, Colorado

Tornado June 4, 2015 · Elbert County, Colorado

EF0
Rating
5.4 mi
Whole path
300 yd
Path width

NOAA records this tornado county by county. Its path ran through Elbert County → Elbert County → Elbert County → Elbert County; the totals above are for the whole tornado.

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 300 yards (0.17 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF0 means. On the Enhanced Fujita scale, EF0 is light damage: shingles and siding peeled, gutters torn, branches broken, consistent with estimated gusts of 65–85 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

Two tornadoes touched down in close proximity to one another, one of which was anticyclonic. Both occurred in open country so no damage was observed.

The wider storm

Severe thunderstorms broke out across Boulder, Denver, Elbert, Jefferson and Larimer Counties. Two large and long lived tornadoes developed in Larimer County near Berthoud and near Simla in Elbert County. The tornado that occurred along the Boulder and Larimer county line was rated an EF3 at it's highest damage point, with maximum winds estimated at 135 to 140 mph. The path length was 6 miles long with a width of one quarter mile at times. In Elbert County, 17 tornadoes touched down, with EF1 damage observed southwest and southeast of Simla. Four homes suffered severe damage; two were uninhabitable. In addition, two other homes suffered moderate damage with slight damage reported to eight other residences. Large hail up to baseball size occurred in Elbert County, with hail up to tennis ball size observed in Boulder County. The hail damaged cars and homes; breaking windows and windshields.

Began near Simla (39.0403, -104.0208).

Other tornadoes from the same storm system

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

EF3 Boulder CountyEF1 Elbert CountyEF1 El Paso CountyEF0 Elbert CountyEF0 Elbert CountyEF0 Elbert CountyEF0 Elbert CountyEF0 Elbert CountyEF0 Elbert CountyEF0 Elbert CountyEF0 Elbert CountyEF0 Elbert CountyEF0 Elbert County

Source: NOAA Storm Events Database, event 590647. Narratives are written by the National Weather Service forecast office that issued the report.

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