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EF4 tornado in Wayne County, Nebraska

Tornado October 4, 2013 · Wayne County, Nebraska

EF4
Rating
18.3 mi
Whole path
2,428 yd
Path width
15
Injuries
$500K
Damage as recorded

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

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 2,428 yards (1.38 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF4 means. On the Enhanced Fujita scale, EF4 is devastating damage: well-built houses levelled, consistent with estimated gusts of 166–200 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 violent tornado started 8 miles southwest of Wayne, Nebraska and flattened corn crops and tore off large limbs of some trees. Gaining strength as it headed northeast, the tornado struct a farmstead about 4.5 miles southwest of Wayne. Here barns and sheds were severely damaged or destroyed. The tornado became very wide at this point, nearly 1.25 miles wide. About 2 miles south of Wayne the tornado severely damaged a farmstead and then cased strong EF-3 damage to two homes along highway 15. The tornado then missed the downtown and residential district of Wayne and severely damaged a softball complex on the southeast side of town.

The most significant damage occurred in the industrial part area on the east side of Wayne. Numerous metal building structures, some of them quiet large, sustained serious damage or were mangled into rubble. It was here the tornado was rated EF-3 with a couple of small pockets of low-end EF-4 damage. The tornado then crossed highway 35 and impacted the Wayne Municipal Airport. Two hangers were flattened. Some private aircraft were tumbled and ripped up. The automated weather observing station at the airport was also torn up. Continuing northeast, the tornado struck another farmstead and caused EF-2 damage to a home. Damage continued northeast at it tracked into Dixon County. The damage in the Wayne area was estimated at $50 million.

The wider storm

The same powerful storm system that produced severe weather across eastern Nebraska on October 3rd remain in the area on the 4th. A strong area of low pressure moved from eastern Colorado into southern South Dakota during the day. As this occurred, a dry line was sweeping across central and into eastern Nebraska. A warm front continued to lift north into northeast Nebraska and western Iowa by late afternoon. With unseasonably warm and moist air in the region the atmosphere became strongly unstable. This instability coupled with a strong wind field associated with the powerful storm system and created and environment favorable for significant severe weather. Supercells developed near the intersection of the dry line and warm front over northeast Nebraska during the afternoon and tracked northeast. The supercells were responsible for large hail, damaging winds, and significant tornadoes. Other isolated thunderstorms developed south along the dry line into western Iowa producing very large hail and damaging winds during the evening of the 4th.

Began near Altona (42.1280, -97.0770).

Other tornadoes from the same storm system

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

Source: NOAA Storm Events Database, event 472670. Narratives are written by the National Weather Service forecast office that issued the report.

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