F1 tornado in Grand Forks County, North Dakota

Tornado July 18, 2004 · Grand Forks County, North Dakota

Rating

4.0 mi

Path length

50 yd

Path width

$10K

Damage as recorded

EF0EF1EF2EF3EF4EF5Unrated

NOAA recorded where this tornado touched down but not where it lifted, so it appears as a point. 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

Many trees were severely damaged along a four mile path south of Emerado. Three trees fell on a granary 9.5 miles south of Emerado.

Began near Emerado (47.2667, -97.6500).

Other tornadoes from the same storm system

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

F4 Barnes County F2 Cass County F2 Steele County F0 Cass County F0 Grand Forks County F0 Traill County F0 Barnes County F0 Cass County

Source: NOAA Storm Events Database, event 5415756. Narratives are written by the National Weather Service forecast office that issued the report.

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