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F1 tornado in Lawrence County, South Dakota

Tornado June 27, 1999 · Lawrence County, South Dakota

F1
Rating
2.0 mi
Path length
50 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 50 yards (0.03 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What F1 means. This tornado was rated on Fujita’s original scale, used until 2007. F1 meant moderate damage: roofs badly stripped, mobile homes pushed off foundations or overturned, windows broken; the scale paired it with winds of 73–112 mph, figures later judged too high, especially toward the top of the scale, and revised downward in the Enhanced Fujita scale. Ratings then, as now, came from the damage.

What the National Weather Service wrote

The tornado knocked several trees into a home, destroyed a chicken coop and damaged a rental car which had a tree fall on it. Numerous trees around the property were also blown down.

Began near Spearfish (44.5000, -103.7300).

Other tornadoes from the same storm system

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

F2 Oglala Lakota County 1 deadF2 Oglala Lakota CountyF1 Harding CountyF0 Tripp CountyF0 Bennett CountyF0 Bennett CountyF0 Bennett CountyF0 Bennett CountyF0 Oglala Lakota CountyF0 Oglala Lakota CountyF0 Oglala Lakota CountyF0 Todd CountyF0 Todd County

Source: NOAA Storm Events Database, event 5709330. Narratives are written by the National Weather Service forecast office that issued the report.

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