Rancho Cucamonga, CA Tornado History — 16 Tornadoes Since 1950
How many tornadoes has Rancho Cucamonga, CA had?
Rancho Cucamonga has had 16 tornadoes on record within 25 miles since 1950.
When was the most recent tornado near Rancho Cucamonga?
The most recent tornado within 25 miles of Rancho Cucamonga was an EF2 on May 22, 2008.
When is tornado season in Rancho Cucamonga?
March is historically the peak month for tornadoes near Rancho Cucamonga, with 4 on record. April through June account for 4 of the 16 tornadoes on record near Rancho Cucamonga.
At a Glance
Recent Tornado Activity Near Rancho Cucamonga
The last 20 years of confirmed tornadoes within 25 miles — 2 total, averaging 0.1 per year over this window.
What storm spotters reported near Rancho Cucamonga
One local storm report has been filed within 25 miles of Rancho Cucamonga and since confirmed into the NOAA archive, the earliest on May 9, 2025 and the most recent on May 9, 2025. It is already counted in the Rancho Cucamonga totals above; quoted below is the narrative the reporting office filed at the time.
[Landspout] Time of occurrence is approximate. Dust devil did damage to a carport. (SGX)
Source: National Weather Service and trained-spotter local storm reports, relayed by the NOAA Storm Prediction Center.
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 Rancho Cucamonga been fatal?
No fatalities are on record within 25 miles of Rancho Cucamonga from any of the 16 tornadoes since 1950, though 5 injuries have been reported, according to NOAA Storm Prediction Center records.
Notable Tornadoes Near Rancho Cucamonga
What the record shows near Rancho Cucamonga
The 2000s are the busiest decade on record so far near Rancho Cucamonga, with 6 of the 16 confirmed tornadoes within 25 miles. The Rancho Cucamonga record runs from the 1950s to today.
Of the tornadoes rated near Rancho Cucamonga, 15 reached EF0 or EF1 and 1 reached EF2 or stronger. The most intense on record near Rancho Cucamonga is rated EF2, of which 1 is logged.
Across the last 20 years Rancho Cucamonga has averaged 0.1 confirmed tornadoes a year within 25 miles, 2 in total. 2008 was the busiest of them with 2, and 19 of those years passed with none at all.