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EF1 tornado in Grady County, Oklahoma

Tornado May 2, 2018 · Grady County, Oklahoma

EF1
Rating
5.5 mi
Path length
100 yd
Path width
$20K
Damage as recorded
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 tornado developed approximately 4 miles west-southwest of Amber, briefly moved northeast before turning east-southeast. A barn and an RV were damaged southwest of Amber, and power poles were damaged south of Amber. Tree damage was also noted just west of Interstate 44, but the tornado did not appear to cross I-44.

The wider storm

Several discrete supercells formed off a dryline in the eastern parts of the panhandles in the late afternoon of the 2nd. These storms moved eastward through the evening, eventually congealing into a line before coming across central Oklahoma. QLCS tornadoes became a significant hazard at this point. After this round of storms made its way out of the area, scattered storms began to form from central Texas up into south western Oklahoma overnight, moving generally northeast into the early morning hours.

Began near Chickasha Arpt (35.1300, -97.9470).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 759154. Narratives are written by the National Weather Service forecast office that issued the report.

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