Home / Iowa / Dubuque

EF1 tornado in Dubuque County, Iowa

Tornado July 11, 2025 · Dubuque County, Iowa

EF1

Rating

0.9 mi

Path length

25 yd

Path width

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

A 0.8 mile long EF-1 tornado with peak estimated wind speed of 95 mph caused damage to trees and a county road maintenance shed in Bernard. This tornado was surrounded by straight line wind damage with winds from 80 to 90 MPH.

The wider storm

On July 11th, a line of severe thunderstorms moved across eastern Iowa and produced damaging straight-line winds, tornadoes and heavy rain. Rainfall totals of 2 to 4 inches fell in a few hours across the Quad Cities, on top of heavy rain from the previous night and caused major flash flooding in Davenport. A Considerable Flash Flood warning was issued at 5:26 PM followed by a Flash Flood Emergency at 6:16 PM.

Began near Bernard (42.3100, -90.8300).

Other tornadoes from the same storm system

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

EF2 Scott County EF2 Jackson County EF2 Linn County EF1 Benton County EF1 Benton County EF1 Linn County EF1 Jones County EF0 Scott County EF0 Delaware County EF0 Dubuque County

Source: NOAA Storm Events Database, event 1281946. Narratives are written by the National Weather Service forecast office that issued the report.

Tornadoes near your address

See every tornado that passed near a place you know, measured to its path.