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EF1 tornado in Ottawa County, Kansas

Tornado April 14, 2012 · Ottawa County, Kansas

EF1
Rating
15.8 mi
Whole path
100 yd
Path width
$10K
Damage as recorded

NOAA records this tornado county by county. Its path ran through Saline County → Ottawa County → Dickinson 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 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

Numerous reports of a well formed stove-pipe tornado were received as the storm crossed the Saline/Ottawa County line. The storm was also watched on live TV at the office via storm chaser cameras. The tornado was very well formed and was likely very strong; however, it did not impact many structures so the subsequent rating was EF-1. The extent of the damage was to a gas transfer station along K-18 near Solomon Road in rural Ottawa County. Near the station some power poles were snapped and laying across the roadway. Aside from the gas transfer station a few farmsteads were impacted, with the main damage being some damaged outbuildings. The tornado crossed the Ottawa/Dickinson County line near Barn Road and 3200 Road, and eventually dissipated in an open field in near Manchester.

The wider storm

A volatile environment developed across Kansas that featured extremely strong wind shear and sufficient buoyancy (called convective energy) to allow supercell thunderstorms to develop ahead of a dry line across central Kansas. The supercells produced strong to violent tornadoes across central Kansas and tracked into parts of the NWS Topeka county warning area during the evening. A handful of tornadoes were reported along with some large hail reports with the most numerous reports of large hail occurring after midnight.

Began near Niles (38.9581, -97.4283).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 365423. Narratives are written by the National Weather Service forecast office that issued the report.

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