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EF0 tornado in Bexar County, Texas

Tornado March 19, 2012 · Bexar County, Texas

EF0
Rating
0.8 mi
Path length
10 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 10 yards (0.01 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

Minor damage near the San Antonio post office on Perrin Beitel Rd was caused by a small tornado that formed along the leading edge of a large cluster of storms pushing east in the early morning hours of March 20 (CDT). This cluster of storms interacted with an outflow boundary causing a few brief tornadoes. In addition to the damage at the post office, one home sustained major damage and 10 others were left with minor damage. Seventy-three other homes were affected by the tornado with other property damage; either debris on the property or damage to fences and plants.

The wider storm

A deep upper level trough of low pressure and strong cold front moved into an area of deep boundary layer moisture. The system initially produced supercell thunderstorms which produced several tornadoes and large hail. There storms then transitioned into a quasi-linear convective system that produced heavy rainfall and flooding.

Began near Longhorn (29.5350, -98.4120).

Other tornadoes from the same storm system

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

EF2 Bexar CountyEF2 Medina CountyEF1 Medina CountyEF0 Bexar CountyEF0 Karnes County

Source: NOAA Storm Events Database, event 368120. Narratives are written by the National Weather Service forecast office that issued the report.

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