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EF1 tornado in Washington County, Indiana

Tornado May 25, 2011 · Washington County, Indiana

EF1
Rating
9.9 mi
Whole path
100 yd
Path width
$215K
Damage as recorded

NOAA records this tornado county by county. Its path ran through Orange County → Orange County → Lawrence County → Washington County → Washington 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

This is the final stretch of the tornado that originated in Orange County, 3.1 miles northwest of Saltillo. After clipping the extreme southeast portion of Lawrence County, it entered Washington County just south of East County Road 700 North and tracked northeastward for another 1.2 miles before dissipating at Spangler Hill Road. It caused EF-1 damage to numerous trees before lifting. The tornado's total path length was 3.2 miles.

The wider storm

Warm humid air in place across the Lower Ohio Valley ahead of deep closed low over Missouri led to widespread severe weather across the lower Missouri Valley and Indiana. A squall line developed across southern Illinois and western Kentucky during the afternoon hours on May 25th and raced across southern Indiana at around 45 mph during the evening and early morning hours on the 26th. Widespread wind damage was reported with frequent reports of 60 to 70 mph winds. A bow echo brought several embedded tornadoes across Dubois, Orange, and Washington counties in southern Indiana.

Began near Saltillo (38.7016, -86.3090).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 294670. Narratives are written by the National Weather Service forecast office that issued the report.

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