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EF1 tornado in Gregg County, Texas

Tornado April 13, 2018 · Gregg County, Texas

EF1
Rating
4.3 mi
Whole path
580 yd
Path width
$11K
Damage as recorded

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 580 yards (0.33 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

An EF-1 tornado, with estimated maximum winds near 90 mph, touched down along Brown Road just east of Highway 259, snapping and uprooting trees as it moved off to the northeast along Lloyd and Northridge Road. One tree landed on a shed on Lloyd Circle. The tornado continued northeast into Northwest Harrison County.

The wider storm

A strong upper level trough of low pressure progressed east across the Southern Plains during the afternoon of April 13th, with a large warm sector of warm/humid air having expanded north across much of the Ark-La-Tex. A capping inversion delayed the onset of thunderstorm development until the late afternoon, where it eroded and large scale forcing increased with shortwave perturbations ahead of the trough and along/just ahead of a dry line as it mixed east to the Interstate 35 corridor or North and Central Texas. Given the moderate instability and strong wind shear that developed with the lead shortwave, scattered supercell thunderstorms developed across East Texas during the late afternoon through the evening hours, producing numerous reports of damaging winds and large hail. While a lull in the storms was observed, a line of severe thunderstorms developed along the dryline south of the Dallas/Fort Worth Metroplex, and progressed east into East Texas by late evening. Damaging winds and reports of hail were prevalent at first with this line of severe thunderstorms, but a number of notches developed along the squall line as these storms moved into extreme Eastern Texas, resulting in two tornadoes touching down across Northern Gregg and Northwest Harrison Counties, as well as extreme Southeastern Harrison County near the Caddo Parish Louisiana line. These severe thunderstorms exited East Texas by midnight on the 14th.

Began near Judson (32.6345, -94.7436).

Other tornadoes from the same storm system

1 more tornado the National Weather Service filed under this storm episode.

Source: NOAA Storm Events Database, event 744317. Narratives are written by the National Weather Service forecast office that issued the report.

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