Longest Tornado Paths in U.S. History

These records have the longest recorded path lengths in this site’s U.S. archive from 1970 through 2025. Open a record to view its endpoints, rating, and reported impacts on the map. The longest path in U.S. history, the 1925 Tri-State tornado, predates the archive and is covered below.

The ranking uses each record’s path length as published by the NOAA Storm Prediction Center. It begins in 1970, not at the start of the archive. Read the ranking method.

The longest tornado path in U.S. history: the 1925 Tri-State tornado

The Tri-State tornado of March 18, 1925 holds the longest tornado path in U.S. history. It traveled about 219 miles from southeastern Missouri across southern Illinois into southwestern Indiana over roughly three and a half hours, and its 695 reported deaths remain the most from any single U.S. tornado. It is not in the table above because the NOAA SPC archive begins in 1950; its absence is a coverage limit, not a ranking decision.

The 219-mile figure is the traditional value published by the National Weather Service. A 2013 reanalysis by Johns, Burgess, and colleagues, using damage reports and survivor accounts, found a continuous path of at least 174 miles and possibly longer, and could not rule out that the track was a family of tornadoes from the same storm. No entry in the 1970–2025 archive approaches either figure. Read the NWS Tri-State tornado history.

How these tracks are ranked

“Longest” means the largest recorded path length, in miles, for a single-track record in the U.S. archive from 1970 through 2025. It does not rank damage ratings, path width, casualties, or the distance between endpoints. Equal lengths share a rank; tied records appear chronologically, including any tie at 25th place.

The ranking begins in 1970 as an editorial cutoff. Several earlier archive entries record very long paths from a period when a sequence of tornadoes produced by one storm was more often logged as a single track. Omitting those years avoids comparing lengths built on different survey practices; it is not a correction of the source. Even after 1970, a long recorded path may later have been reinterpreted as more than one tornado. This site presents each record as published.

Each whole track counts once, including interstate tornadoes, and the recorded length covers the full path rather than one state’s segment. The states shown are the touchdown state followed by other states named in the source’s state segments; they are a set, not a route. Records with no recorded length, or a length of zero, are excluded. Map lines join recorded endpoints, so a line on the map can be shorter than the surveyed path it represents.

Source: NOAA SPC 1950–2025 single-track CSV. Latest event date: 2025-12-28. Full data methodology.

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