F1 tornado in Weld County, Colorado

Tornado July 30, 1997 · Weld County, Colorado

Rating

0.1 mi

Path length

50 yd

Path width

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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

A tornado touched down ripping a portion of the roof and porch off a house.

Began near Rockport (40.8200, -104.5200).

Source: NOAA Storm Events Database, event 5607515. Narratives are written by the National Weather Service forecast office that issued the report.

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