Glendora, CA Tornado History — 27 Tornadoes Since 1950
How many tornadoes has Glendora, CA had?
Glendora has had 27 tornadoes on record within 25 miles since 1950.
When was the most recent tornado near Glendora?
The most recent tornado within 25 miles of Glendora was an EF0 on March 13, 2025.
When is tornado season in Glendora?
March is historically the peak month for tornadoes near Glendora, with 9 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 Glendora
The last 20 years of confirmed tornadoes within 25 miles — 3 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
Have any tornadoes near Glendora been fatal?
No fatalities are on record within 25 miles of Glendora from any of the 27 tornadoes since 1950, though 16 injuries have been reported. NOAA Storm Prediction Center records.
Notable Tornadoes Near Glendora
About Tornadoes in Glendora
This overview was written July 28, 2026. The tornado counts and notable-event figures elsewhere on this page reflect the latest data and may differ from this summary.
Glendora sits in Los Angeles County's San Gabriel Valley, pressed against the foothills of the San Gabriel Mountains, and its tornado history follows Southern California's cool-season rhythm: tornadoes in the area have tended to arrive between late fall and early spring, when Pacific storm systems sweep inland across the region.
The valley has taken serious hits. On November 7, 1966, an F2 tornado tracked 10.3 miles on a path up to 50 yards wide, injuring 10 people and causing $275,000 in property damage. On November 9, 1982, another F2 carved a 10-mile path as much as 1,300 yards across and caused $2,750,000 in damage; an F0 also touched down in the area that same day.
Weaker tornadoes have visited repeatedly, often in the heart of the wet season — F1s on March 17, 1977, March 16, 1986, and March 21, 1992, along with an F1 on December 7, 1992, and another on January 14, 1993. That pattern has carried into recent years: an EF0 touched down on February 23, 2023, an EF1 followed on March 22, 2023, and an EF0 passed through the area on March 13, 2025 — each arriving in the same late-winter-to-early-spring window that has long produced Glendora's tornado weather.