The Hallam, Nebraska tornado of May 22, 2004 reached a width of 2.5 miles - the widest tornado ever recorded until the 2013 El Reno event broke the record. Rated F4 with peak winds estimated at 160 mph. Killed 1 person and destroyed most of the town of Hallam.
The tornado touched down at approximately 7:30 PM CDT in Gage County, Nebraska. Over the next 55 minutes it traveled 54 miles across southeastern Nebraska. Peak width of 2.5 miles was reached over rural areas near Hallam.
The tornado devastated the small farming community of Hallam (population ~400):
Despite the tornado's massive size and F4 intensity:
The single death was in a mobile home. Additional injuries were minor.
Before Hallam, the widest documented US tornado had been the 1990 Great Bend, KS event at approximately 2.5 miles. Hallam matched or exceeded that record. The record held for 9 years until El Reno 2013 reached 2.6 miles.
Multi-vortex structure was observed - visible sub-vortices within the parent tornado. The wide profile is characteristic of very violent, mature tornadoes.
Hallam 2004 was extensively chased and photographed. Multiple chase teams captured the tornado at its peak size, providing some of the most iconic imagery of a wide wedge tornado to date.
The event became a case study in extreme tornado structure. Damage surveyors and researchers examined the site for years.
Hallam rebuilt in the years after. The town population is smaller now than before the tornado - a common pattern for small rural towns hit by catastrophic disasters. Nebraska expanded its rural storm shelter grant programs following the 2004 event.
The tornado is periodically referenced in tornado-width discussions. Its 2.5-mile width remained the US record for 9 years - a notable stretch for such an extreme statistic.
2004 was a highly active tornado year in Nebraska. Additional significant events included multiple EF-scale predecessors that year. The state saw an unusual concentration of severe weather that spring.
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