Yellowstone Region Records 14 Earthquakes
A swarm of small quakes struck the Yellowstone area between October 22 and November 4, 2026, with the largest reaching magnitude 1.7.
Updated on Nov. 5, 2026 in Geology
The Yellowstone region recorded 14 earthquakes between October 22 and November 4, 2026, with magnitudes ranging from 0.0 to 1.7. The largest, a magnitude 1.7 quake on October 31, struck about 15 miles northwest of West Yellowstone, Montana.
Why it matters
Yellowstone is one of the most seismically active areas in the United States, and its quakes are tied to a dense network of faults around the volcano. Small swarms like this are part of the area's routine activity, which the U.S. Geological Survey tracks closely.
The 14 recorded quakes, with magnitudes from 0.0 to 1.7, fall within the typical range for the area, which averages 1,500 to 2,500 earthquakes per year according to the U.S. Geological Survey. Whether this sequence signals any change in volcanic or fault behavior has not been determined.
The players
U.S. Geological Survey
The U.S. Geological Survey is the federal science agency that monitors earthquakes and volcanic activity nationwide, including the Yellowstone area.
Yellowstone National Park
Yellowstone National Park is a major federal preserve spanning Wyoming, Montana, and Idaho, known for its geothermal features and volcanic system.
The details
The earthquakes occurred over two weeks from October 22 to November 4, 2026, and the largest, magnitude 1.7, struck on October 31. Yellowstone earthquakes typically arrive in swarms, clustered close together in time and space, and they stem from an extensive network of faults linked to the volcano and surrounding tectonic features.
Timeline
October 22 to November 4, 2026: 14 earthquakes recorded in the Yellowstone region.
October 31, 2026: Largest quake, magnitude 1.7, about 15 miles northwest of West Yellowstone.
1985: Largest recorded swarm, with more than 3,000 earthquakes over three months on the northwest side of Yellowstone National Park.
Big Picture
This sequence is far smaller than the 1985 swarm, which recorded more than 3,000 quakes over three months near Yellowstone National Park. It fits the same pattern of clustered activity that defines the region's fault network.
Residents and visitors to Yellowstone and nearby towns in Montana, Wyoming, and Idaho may notice increased seismic reporting, though swarms of this size are common in the region. Anyone planning travel to the park should check current conditions with official park sources before visiting.
The takeaway
Yellowstone's frequent small earthquakes are a normal sign of an active volcanic system rather than an immediate warning. Staying informed through official monitoring updates gives the clearest picture of what the region is doing.
Further reading
For additional background on fault systems and volcanic monitoring, see more Geology coverage.
Source note: This article includes information reported by ABC 4.
