Markham, IL tornado history

32 tornadoes have passed within 10 miles of the center of Markham, IL from 1950 through 2025, according to the NOAA Storm Prediction Center, ranking 160th of 441 Illinois cities with a tornado on record. 1 was rated F3/EF3 or stronger by the National Weather Service. The most recent was on March 19, 2025 (EF0, 0.3-mile path); the strongest, on April 21, 1967, was rated F4. The deadliest, on April 21, 1967, killed 33 along its path. SPC also logged 6 preliminary tornado reports within 10 miles of the center of Markham, IL in 2026.

Dashed circle: 10 miles from the city's Census center point. A tornado counts when its recorded path passes inside the circle. Paths run straight from start to end point, as SPC records them.

Every tornado within 10 miles of the center of Markham, IL

More: Cook County tornadoes · Illinois tornado history · Markham hail history · Illinois damaging wind

Source: NOAA Storm Prediction Center (SPC) Severe Weather Database (SVRGIS) tornado file, 1950–2025, and SPC preliminary storm reports for 2026 (data through November 6, 2026). Ratings are the ones the National Weather Service assigned: Fujita (F) scale before Feb 1, 2007, Enhanced Fujita (EF) after. Paths are drawn as straight lines from the start to the end point SPC records; real paths curve. City and county boundaries: US Census Bureau.