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EF0 tornado in Johnson County, Iowa

Tornado April 27, 2014 · Johnson County, Iowa

EF0

Rating

45.7 mi

Whole path

100 yd

Path width

Deaths

Injuries

$25K

Damage as recorded

NOAA records this tornado county by county. Its path ran through Wapello County → Keokuk County → Iowa County → Johnson 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

NWS storm survey teams determined that a tornado developed in far northern Wapello County, crossed Keokuk County and southeastern Iowa County, and ended in rural southwest Johnson County. This entry is for the portion of the tornado that affected Johnson County.

This long track tornado initially started east of Highland Center and traveled at about 60 mph to the northeast. After crossing Keokuk and southeastern Iowa Counties, the tornado moved into Johnson County about 10 miles southwest of Tiffin at around 4:02 pm CDT (3:02 pm CST). It left a path of scattered tree and shed damage for about 4.25 miles in rural southwest Johnson County as it weakened.

It finally lifted about 4.2 miles south of Oxford at about 4:06 pm CDT (3:06 pm CST).

The wider storm

A powerful storm system lifted into the central Plains on the afternoon of April 27, 2014 and brought several rounds of showers and thunderstorms to eastern Iowa. Some of these thunderstorms were severe and produced damaging winds and an isolated hail report. There was one confirmed tornado during the event that moved across Keokuk, Iowa and Johnson Counties with two fatalities. In addition to the damaging winds rainfall totals ranged from a half an inch to around 1 inch in a little under an hour.

Began near Windham (41.6117, -91.8329).

Other tornadoes from the same storm system

1 more tornado the National Weather Service filed under this storm episode.

EF0 Linn County

Source: NOAA Storm Events Database, event 504339. Narratives are written by the National Weather Service forecast office that issued the report.

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