EF1 tornado in Adair County, Oklahoma
Tornado May 20, 2013 · Adair County, Oklahoma
NOAA records this tornado county by county. Its path ran through Adair County → Adair County; the totals above are for the whole tornado.
The path drawn at its surveyed width of 150 yards (0.09 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.
What the National Weather Service wrote
This tornado uprooted trees and snapped a few other trees. Based on this damage, maximum estimated wind in the tornado was 95 to 105 mph.
The wider storm
Severe thunderstorms developed along a nearly stationary frontal boundary over central Oklahoma during the early afternoon hours of the 20th. Very unstable air combined with strong low-level and deep-layer shear resulted in long-lived supercells forming over central Oklahoma and moving eastward into eastern Oklahoma. Several tornadoes occurred from these storms across Osage, Washington, and Nowata Counties. The storms organized into bow echos and line segments over eastern Oklahoma, from which several other tornadoes developed during the early evening hours across Ottawa, Adair, and Le Flore Counties. Damaging wind and large hail was also widespread across the region from these storms.
Began near Proctor (35.9476, -94.7581).
Other tornadoes from the same storm system
7 more tornadoes the National Weather Service filed under this storm episode.
Source: NOAA Storm Events Database, event 455295. Narratives are written by the National Weather Service forecast office that issued the report.
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