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EF0 tornado in Williamson County, Texas

Tornado May 23, 2015 · Williamson County, Texas

EF0
Rating
0.3 mi
Path length
50 yd
Path width
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 NWS storm survey concluded that a weak and brief EF-0 tornado touched down near the end of Brizendine Rd. in far NW Williamson County. Minor roof damage was observed along with tree damage. Peak winds were estimated at 85 mph.

The wider storm

An upper level shortwave trough moved around the longwave low over the Four Corners region. This upper distubance interacted with a surface boundary moving northward as a warm front from South Texas into a very moist airmass. This combination led to thunderstorms that produced heavy rain and isolated severe weather. A historic flash flood occurred on the Blanco River late Saturday night into Sunday. Hundreds of homes were destroyed along the river from the City of Blanco down into Wimberley and San Marcos. The flood wave continued downstream for days affecting residents and homes along the San Marcos and Guadalupe Rivers. Early estimates show damages in excess of 100 million dollars. Several people lost their lives due to flash flooding. A large tornado outbreak occurred this Saturday night producing numerous small brief tornadoes.

Began near Andice (30.7665, -97.9250).

Other tornadoes from the same storm system

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

EF1 Travis CountyEF1 Williamson CountyEF1 Bexar CountyEF1 Williamson CountyEF1 Bastrop CountyEF1 Travis CountyEF0 Hays CountyEF0 Travis CountyEF0 Travis County

Source: NOAA Storm Events Database, event 581295. Narratives are written by the National Weather Service forecast office that issued the report.

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