American Fork, UT Tornado History — 15 Tornadoes Since 1950
How many tornadoes has American Fork, UT had?
American Fork has had 15 tornadoes on record within 25 miles since 1950.
When was the most recent tornado near American Fork?
The most recent tornado within 25 miles of American Fork was an EF0 on September 7, 2013.
When is tornado season in American Fork?
August is historically the peak month for tornadoes near American Fork, with 3 on record. Spring through early summer (April–June) generally sees the highest activity across most of the central and southern United States.
At a Glance
Recent Tornado Activity Near American Fork
The last 20 years of confirmed tornadoes within 25 miles — 1 total, averaging 0.1 per year over this window.
Tornadoes by Decade
Tornadoes by Enhanced Fujita Rating
F0–F5 ratings (pre-2007) are grouped with their EF equivalents. The Enhanced Fujita scale replaced the original Fujita scale in February 2007.
Tornadoes by Month
Casualties on Record Near American Fork
1 fatality has been recorded within 25 miles of American Fork since 1950, across 1 event. 80 injuries have been reported across all events. 1999 was the deadliest year on record.
The deadliest single event was a F2 on August 11, 1999, which caused 1 fatality along a 4.3-mile track.
Notable Tornadoes Near American Fork
About Tornadoes in American Fork
This overview was written April 23, 2026. The tornado counts and notable-event figures elsewhere on this page reflect the latest data and may differ from this summary.
American Fork, Utah, sits in a region not typically associated with frequent tornado activity, yet records from the NOAA Storm Prediction Center document 15 tornadoes within a 25-mile radius of the city since 1950. The majority of these events have been weak, with nine rated EF0 and five rated EF1 on the Enhanced Fujita scale, which measures tornado intensity based on damage. Only one tornado reached EF2 strength during this period.
Tornado activity near American Fork has been relatively consistent across recent decades, with the highest concentrations occurring in the 1980s and 1990s when four tornadoes were recorded in each decade. The 1960s and 1970s each saw two events, the 2000s recorded two, and the 2010s documented one. Unlike the traditional spring peak seen in many tornado-prone regions of the United States, August has been the most active month locally with three recorded tornadoes, suggesting a late-summer pattern influenced by regional weather dynamics.
The most significant tornado on record occurred on August 11, 1999, when an F2 tornado traveled 4.3 miles with a maximum width of 150 yards. This event resulted in one fatality and caused $170 in property damage. It remains both the deadliest and longest-tracked tornado in the area's documented history. The costliest tornado struck on January 10, 1989, an F1 event that caused $27,500 in damage along a 0.2-mile path. The widest tornado, an F1 rated storm on December 2, 1970, reached 300 yards across during its one-mile track but caused no reported damage or injuries.
The most recent tornado near American Fork was an EF0 that touched down on September 7, 2013. This brief event traveled just 0.1 miles with a maximum width of only three yards and caused $10,000 in property damage. No fatalities were reported. While tornadoes remain relatively uncommon in this area compared to regions with more frequent severe weather, the historical record demonstrates that they do occur and can occasionally produce significant impacts.