EF0 tornado in Greene County, Illinois

Tornado May 15, 2018 · Greene County, Illinois

EF0

Rating

0.9 mi

Whole path

50 yd

Path width

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

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

A landspout tornado developed on the intersection of two outflow boundaries in extreme western Greene County Illinois, approximately 3 miles south southeast of Pearl, Illinois. The weak landspout tornado was very visible and numerous photos and videos were taken as it slowly moved west-southwest across the Illinois River into Pike County, Illinois. Based on the photographs and videos provided to the NWS, the tornado appeared to be no more than 50 yard wide and on the ground for roughly one mile crossing open farm fields and diminishing as a waterspout on the Illinois River. The landspout was rated EF0 in Greene County with a path length of 0.69 miles and max path width of 50 yards.

The wider storm

As a weak cold front moved southeast across the forecast area, showers and thunderstorms developed. One of the storms produced a landspout tornado.

Began near Hillview (39.4191, -90.6030).

Source: NOAA Storm Events Database, event 758281. Narratives are written by the National Weather Service forecast office that issued the report.

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