Bostonia, CA Tornado History — 13 Tornadoes Since 1950
How many tornadoes has Bostonia, CA had?
Bostonia has had 13 tornadoes on record within 25 miles since 1950.
When was the most recent tornado near Bostonia?
The most recent tornado within 25 miles of Bostonia was an Unrated on April 22, 2019.
When is tornado season in Bostonia?
February is historically the peak month for tornadoes near Bostonia, with 5 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 Bostonia
The last 20 years of confirmed tornadoes within 25 miles — 1 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 Bostonia been fatal?
No fatalities are on record within 25 miles of Bostonia from any of the 13 tornadoes since 1950, though 1 injuries have been reported. NOAA Storm Prediction Center records.
Notable Tornadoes Near Bostonia
About Tornadoes in Bostonia
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.
Bostonia sits in the El Cajon valley of eastern San Diego County, where tornadoes arrive not with warm-season supercells but with the cool-season Pacific storm systems that push unstable marine air into Southern California's inland valleys.
The dates of its tornadoes trace that winter rhythm. F0 tornadoes touched down on February 23, 1971, February 4, 1985, and February 8, 1998, with additional midwinter F0 touchdowns on January 18, 1979, and January 14, 1990. Early spring has produced events of its own, including F0 tornadoes on March 18, 1982, and March 11, 2006, and an F1 tornado struck the Bostonia area on March 19, 1991.
F1 tornadoes have also touched down nearby on April 13, 1956, and February 21, 1980, and — in a reminder that late autumn can turn severe here when a strong Pacific trough moves through — on November 10, 2000. An F0 followed on February 23, 2005, and a tornado touched down on April 22, 2019 that carries an undetermined rating in NOAA's storm data.
For a community tucked against the foothills east of San Diego, this is the local face of tornado weather: brief vortices born of winter lows and cool-season instability rather than the long-track storms of the Plains, appearing in the months when Pacific systems sweep ashore.