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EF1 tornado in Autauga County, Alabama

Tornado October 7, 2017 · Autauga County, Alabama

EF1
Rating
3.9 mi
Path length
625 yd
Path width
EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 625 yards (0.36 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

NWS meteorologists surveyed damage in far southern Autauga County and determined that the damage was consistent with an EF1 tornado. The tornado began just north of the Alabama River in private farmland and moved northwest across County Road 19 where it uprooted trees and snapped a few tree trunks. The tornado continued northwest crossing County Road 17 near the intersection of County Road 74 where several trees were uprooted. The tornado then continued northwest where it uprooted trees along a portion of Dutch Bend Road and snapped some tree trunks along County Road 33. The tornado moved further northwest where it crossed Alabama Highway 14 where it uprooted trees near the roadway. The tornado likely lifted in a forested area to the north of Alabama Highway 14.

The wider storm

Nate strengthened into a Tropical Storm on the morning of Thursday, October 5th, just off the coast of Nicaragua. Nate moved inland across Nicaragua and Honduras through Friday morning October 6th. Nate then moved north-northwest over the warm waters of the northwestern Caribbean Sea, where it gradually intensified. Just after passing through the Yucatan Channel, Nate officially reached hurricane status during the early morning hours of Saturday, October 7th. Hurricane Nate raced toward the central Gulf Coast and made its first landfall near the mouth of the Mississippi River Saturday evening, October 7th. A second landfall near Biloxi, MS, came later that evening. Nate continued to accelerate northeastward and weaken as it crossed into west Alabama. Nate was downgraded to a Tropical Depression near Birmingham, AL, on the morning of Sunday, October 8th. Nate produced gusty winds of 30-50 mph which downed numerous trees and power lines across central Alabama, and several weak tornadoes formed on its feeder bands. As the remnants of Nate tracked towards the New England States, a nearly stationary surface trough over southeast Alabama resulted in localized flash flooding in Chambers County on Monday, October 9th.

Began near Autaugaville (32.4015, -86.6530).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 725215. Narratives are written by the National Weather Service forecast office that issued the report.

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