Altadena, CA Tornado History — 40 Tornadoes Since 1950
How many tornadoes has Altadena, CA had?
Altadena has had 40 tornadoes on record within 25 miles since 1950.
When was the most recent tornado near Altadena?
The most recent tornado within 25 miles of Altadena was an EF0 on March 13, 2025.
When is tornado season in Altadena?
March is historically the peak month for tornadoes near Altadena, with 8 on record. April through June account for 7 of the 40 tornadoes on record near Altadena.
At a Glance
Recent Tornado Activity Near Altadena
The last 20 years of confirmed tornadoes within 25 miles — 6 total, averaging 0.3 per year over this window.
What storm spotters reported near Altadena
One local storm report has been filed within 25 miles of Altadena and since confirmed into the NOAA archive, the earliest on December 25, 2025 and the most recent on December 25, 2025. It is already counted in the Altadena totals above; quoted below is the narrative the reporting office filed at the time.
The National Weather Service conducted a storm survey in the neighborhood of Boyle Heights in Los Angeles County... CA for damage associated with a low-topped mini supe (LOX)
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 Altadena been fatal?
No fatalities are on record within 25 miles of Altadena from any of the 40 tornadoes since 1950, though 49 injuries have been reported, according to NOAA Storm Prediction Center records.
Notable Tornadoes Near Altadena
What the record shows near Altadena
The 1980s were the busiest decade near Altadena, with 10 of the 40 confirmed tornadoes within 25 miles; the 2020s have produced 5 so far. The Altadena record runs from the 1950s to today.
Of the tornadoes rated near Altadena, 35 reached EF0 or EF1 and 5 reached EF2 or stronger. The most intense on record near Altadena is rated EF2, of which 5 are logged.
Across the last 20 years Altadena has averaged 0.3 confirmed tornadoes a year within 25 miles, 6 in total. 2023 was the busiest of them with 4, and 17 of those years passed with none at all.