The Tri-State Tornado of March 18, 1925 tracked roughly 352 km (219 miles) across Missouri, Illinois, and Indiana — the longest continuous tornado damage path on record — killing 695 people, still the deadliest single tornado in U.S. history. Some modern meteorologists argue the historical damage path may actually represent a short-lived family of several tornadoes rather than one continuous funnel, given the limits of 1920s-era damage surveying, but it remains the officially recognized record.
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The Tri-State Tornado of March 18, 1925 tracked roughly 352 km (219 miles) across Missouri, Illinois, and Indiana — the longest continuous tornado damage path on record — killing 695 people, still the deadliest single tornado in U.S. history. Some modern meteorologists argue the historical damage path may actually represent a short-lived family of several tornadoes rather than one continuous funnel, given the limits of 1920s-era damage surveying, but it remains the officially recognized record.
The greatest length of a damage path attributed to a single continuous tornado, as determined by historical damage survey.
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Permanent ID limitsregistry.com/limits/LR-LONGEST-TORNADO-TRACK
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Limits Registry. LR-LONGEST-TORNADO-TRACK. Longest continuous tornado track. 2026.