Westmont, CA Tornado History — 44 Tornadoes Since 1950
How many tornadoes has Westmont, CA had?
Westmont has had 44 tornadoes on record within 25 miles since 1950.
When was the most recent tornado near Westmont?
The most recent tornado within 25 miles of Westmont was an EF0 on March 13, 2025.
When is tornado season in Westmont?
March is historically the peak month for tornadoes near Westmont, 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 Westmont
The last 20 years of confirmed tornadoes within 25 miles — 7 total, averaging 0.3 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 Westmont been fatal?
No fatalities are on record within 25 miles of Westmont from any of the 44 tornadoes since 1950, though 50 injuries have been reported. NOAA Storm Prediction Center records.
Notable Tornadoes Near Westmont
About Tornadoes in Westmont
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.
Westmont, California has experienced 44 documented tornadoes within a 25-mile radius since 1950, according to the NOAA Storm Prediction Center. This activity is notable for a region not typically associated with frequent tornado occurrence, though California does see tornadoes primarily during the cool season when atmospheric conditions align favorably for rotating storms.
The temporal distribution shows considerable variation across decades. The 1980s recorded the highest activity with 12 tornadoes, followed closely by the 1990s with 11 events. In contrast, the 2000s and 2010s each saw only 2 to 3 tornadoes. The current decade has already recorded 5 tornadoes through 2025, including an EF0 event on March 13, 2025 that traveled one mile with a maximum width of 80 yards and caused no damage or injuries.
March stands out as the peak month for tornado activity in the Westmont area, accounting for 9 of the 44 recorded events. This seasonal pattern aligns with California's winter storm season, when strong Pacific weather systems can generate the wind shear and instability necessary for tornadogenesis. The intensity distribution reflects the generally weaker nature of West Coast tornadoes: 22 events rated EF0, 17 rated EF1, and 5 rated EF2 on the Enhanced Fujita scale, which categorizes tornadoes from EF0 (65-85 mph winds) to EF5 (over 200 mph winds). Notably, no tornadoes in the area's recorded history have resulted in fatalities.
The costliest tornado occurred on March 1, 1983, an F2-rated storm that caused $27.5 million in property damage while traveling 3.5 miles with a maximum width of 100 yards. The widest tornado on record struck on November 9, 1982, reaching 1,300 yards across and carving a 10-mile path with $2.75 million in damage. The longest-track tornado was an F1 event on March 17, 1977 that traveled 10.9 miles, though it remained narrow at just 10 yards wide, causing $2.75 million in damage.