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EF1 tornado in Clark County, Missouri

Tornado June 17, 2026 · Clark County, Missouri

EF1
Rating
1.5 mi
Whole path
100 yd
Path width
$75K
Damage as recorded

NOAA records this tornado county by county. Its path ran through Lee County, Iowa → Clark County → Hancock County, Illinois; 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

A brief EF1 tornado uniquely tracked across three states. This developed just inside Lee County, Iowa, with peak winds of 105 mph, and tracked southeast through Clark County, Missouri. It then continued across the Mississippi River into Hancock County, Illinois, impacting northern parts of Warsaw. This tornado persisted for about 1.3 miles(0.9 miles in Missouri), doing damage largely to numerous trees, with concentrated snapping including along the banks of the Mississippi River, as shown by drone footage. There also was damage to two gas station canopies along US Highway 61 in Missouri.

The wider storm

The narrative for this event is to be determined.

Began near Alexandria (40.3760, -91.4512).

Source: NOAA Storm Events Database, event 1337533. Narratives are written by the National Weather Service forecast office that issued the report.

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