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EF0 tornado in Cass County, Iowa

Tornado June 28, 2024 · Cass County, Iowa

EF0

Rating

2.4 mi

Path length

50 yd

Path width

$1K

Damage as recorded

$1K

Crop damage

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 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

This weak tornado remained mostly in rural farmland but did impact some trees with minor damage.

The wider storm

A cold front moved across the area on the evening of June 28th. Convection developed quickly along the front as the cap eroded, initially discrete but quickly growing upscale. Robust CAPE exceeding 3000 J/kg was in place with good directional shear to support rotating updrafts. This resulted in a handful of weak tornadoes in Cass county at the onset of storm development. After storms grew upscale they remained sub-severe.

Began near Lewis (41.3561, -95.1251).

Other tornadoes from the same storm system

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

EFU Cass County EFU Cass County

Source: NOAA Storm Events Database, event 1190987. Narratives are written by the National Weather Service forecast office that issued the report.

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