Herriman, UT Tornado History — 21 Tornadoes Since 1950
How many tornadoes has Herriman, UT had?
Herriman has had 21 tornadoes on record within 25 miles since 1950.
When was the most recent tornado near Herriman?
The most recent tornado within 25 miles of Herriman was an EF1 on September 2, 2021.
When is tornado season in Herriman?
August is historically the peak month for tornadoes near Herriman, with 5 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 Herriman
The last 20 years of confirmed tornadoes within 25 miles — 2 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 Herriman
1 fatality has been recorded within 25 miles of Herriman since 1950, across 1 event. 82 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 Herriman
About Tornadoes in Herriman
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.
Since 1950, the National Oceanic and Atmospheric Administration's Storm Prediction Center has documented 21 tornadoes within 25 miles of Herriman, Utah. The majority of these events have been relatively weak, with 11 rated EF0 and 8 rated EF1 on the Enhanced Fujita scale, which classifies tornadoes based on estimated wind speeds and resulting damage. Only two tornadoes reached EF2 intensity, indicating winds between 111 and 135 miles per hour.
Tornado activity in the Herriman area has varied considerably by decade. The 1990s saw the highest concentration with 10 recorded events, while the 1960s, 1980s, 2000s, 2010s, and 2020s each contributed between one and four tornadoes. August has been the most active month historically, accounting for 5 of the 21 tornadoes on record. This late-summer peak differs from the typical spring maximum seen in many other parts of the United States, reflecting the region's unique meteorological patterns.
The deadliest tornado in the area's recorded history occurred on August 11, 1999, when an F2-intensity twister resulted in one fatality. That storm carved a 4.3-mile path with a maximum width of 150 yards and caused $170 in property damage. The costliest event took place on May 4, 1993, when an F1 tornado caused $275,000 in damage despite traveling only 0.1 miles with a maximum width of just 13 yards. The longest-tracked tornado on record was an F1 that traveled 10.0 miles on July 26, 1991, while the widest reached 350 yards on September 3, 2021.
The most recent tornado near Herriman was an EF1 event on September 3, 2021, which traveled 2.0 miles and reached a maximum width of 350 yards. No fatalities or property damage were reported from that storm, according to NOAA Storm Prediction Center records. While tornadoes remain relatively uncommon in this region compared to areas with more frequent severe weather, the historical record demonstrates that they do occur and can occasionally produce significant impacts.