Northglenn, CO Tornado History — 225 Tornadoes Since 1950
How many tornadoes has Northglenn, CO had?
Northglenn has had 225 tornadoes on record within 25 miles since 1950, including 3 violent (EF3+) tornadoes.
When was the most recent tornado near Northglenn?
The most recent tornado within 25 miles of Northglenn was an Unrated on July 14, 2025.
When is tornado season in Northglenn?
June is historically the peak month for tornadoes near Northglenn, with 102 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 Northglenn
The last 20 years of confirmed tornadoes within 25 miles — 40 total, averaging 2.0 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
Have any tornadoes near Northglenn been fatal?
No fatalities are on record within 25 miles of Northglenn from any of the 225 tornadoes since 1950, though 66 injuries have been reported. NOAA Storm Prediction Center records.
Notable Tornadoes Near Northglenn
About Tornadoes in Northglenn
This overview was written July 29, 2026. The tornado counts and notable-event figures elsewhere on this page reflect the latest data and may differ from this summary.
Northglenn sits in Adams County on Colorado's northern Front Range, just north of Denver, where spring and early-summer storms spilling off the foothills onto the plains have repeatedly spun up tornadoes. The dates in the local record cluster tightly in late May, June, and July, the heart of the Front Range severe-weather season.
Some of those storms have been serious. On June 3, 1981, an F2 tornado tore a 2.3-mile path through the area, injuring 42 people and causing $27,500,000 in property damage; a second F2 touched down the same day. An F3 on May 18, 1975 cut a 4.1-mile track up to 440 yards wide, and another F3 on June 15, 1988 injured 7 people along a 2.5-mile path, with damage put at $27,500,000. On June 8, 1986, an F2 injured 6 people and caused $2,750,000 in damage, one of several tornadoes near the city that day.
Tornadoes remain part of life here. An EF2 on June 7, 2021 stayed on the ground for 7.5 miles and caused $530,500 in damage, an EF1 followed on June 22, 2023, and tornadoes were recorded near Northglenn again on June 13 and July 14, 2025 — a reminder that the same plains-and-foothills setup returns each summer.