EF1 tornado — Lincoln County, Washington

EF1 tornado in Lincoln County, Washington

Tornado May 6, 2009 · Lincoln County, Washington

EF1

Rating

3.4 mi

Path length

30 yd

Path width

$30K

Damage as recorded

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 30 yards (0.02 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 short-lived tornado from a thunderstorm touched down and caused damage to two structures. It also uprooted and snapped numerous coniferous trees, many with trunk diameters greater than 15 inches.

The wider storm

A strong thunderstorm with rotation first spawned a funnel cloud and then a tornado, which briefly touched down just northeast of Davenport. The funnel cloud was spotted 16 miles northwest of Odessa, followed by a weak tornado eight miles north-northeast of Davenport. The EF1 tornado damaged two structures. By the time the storm reached north Spokane County, the rotation had weakened and was not as evident. However, a localized area of strong downburst winds impacted an area located five miles west of Chattaroy where a portion of a metal roof was blown off an out-building near the intersection of Monroe and Crosscut roads.

Source: NOAA Storm Events Database, event 168889. Narratives are written by the National Weather Service forecast office that issued the report.

EF1 tornado in Lincoln County, Washington

What the National Weather Service wrote

The wider storm

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