Home / Wisconsin / Florence

EF0 tornado in Florence County, Wisconsin

Tornado April 10, 2011 · Florence County, Wisconsin

EF0

Rating

12.0 mi

Whole path

100 yd

Path width

$215K

Damage as recorded

NOAA records this tornado county by county. Its path ran through Forest County → Florence County; the totals above are for the whole tornado.

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 100 yards (0.06 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF0 means. On the Enhanced Fujita scale, EF0 is light damage: shingles and siding peeled, gutters torn, branches broken, consistent with estimated gusts of 65–85 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

The tornado that formed near Argonne (Forest County) entered southwest Florence County at 7:46 pm CDT (1846 CST). Several large tree branches were broken (DI 28, DOD 2) before the tornado dissipated at 7:51 pm CDT (1851 CST). The average path width of the tornado in Florence County was 75 yards.

The wider storm

Thunderstorms developed along and ahead of a cold front as it encountered moist and unstable air across Wisconsin.

A record number of tornadoes for April struck Wisconsin on April 10. Fifteen twisters affected the state as a strong spring storm moved across the western Great Lakes. In the National Weather Service Green Bay service area of northeast Wisconsin, ten tornadoes were reported, a record single-day outbreak for any month of the year.

In addition to the tornadoes, the lines of thunderstorms that developed produced plenty of straight line wind damage and large hail. Wind gusts, some estimated in the 80 mph to 100 mph range, downed numerous trees, damaged a small building, caused an injury and damage to two homes, toppled an 80-foot tall radio tower, threw a carport two houses away, and caused major damage to two industrial buildings. The largest hail reported was baseball size near Winneconne in Winnebago County.

Began near Long Lake (45.7224, -88.6760).

Other tornadoes from the same storm system

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

EF3 Marathon County EF2 Waushara County EF2 Outagamie County EF1 Forest County EF1 Langlade County EF1 Waushara County EF1 Brown County EF1 Calumet County EF1 Waushara County

Source: NOAA Storm Events Database, event 285275. 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.