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EF1 tornado in Graham County, Kansas

Tornado June 20, 2011 · Graham County, Kansas

EF1
Rating
0.9 mi
Path length
25 yd
Path width
$500K
Damage as recorded
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 25 yards (0.01 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

NWS employee and storm chaser reported a satellite tornado just east of Highway 283 in extreme northern Graham County.

The wider storm

A strong, slow-moving low pressure system moved across northwest Kansas during the afternoon, resulting in over a dozen tornadoes, some strong and long-lived. The strongest tornadoes occurred over Graham and Norton counties. Other reports of baseball sized hail were received.

Began near (hlc)hill City Muni (39.5527, -99.8266).

Other tornadoes from the same storm system

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

EF3 Graham CountyEF3 Norton CountyEF3 Norton CountyEF1 Graham CountyEF1 Norton CountyEF0 Gove CountyEF0 Gove CountyEF0 Graham CountyEF0 Norton CountyEF0 Sheridan CountyEF0 Decatur CountyEF0 Norton CountyEF0 Decatur County

Source: NOAA Storm Events Database, event 326554. Narratives are written by the National Weather Service forecast office that issued the report.

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