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M1.6 Depth: 6.5 km

M1.6 Earthquake near 32 km NNW of Challis, Idaho (United States)

UTC time: 2025-09-18 15:30:33 UTC Local time: —

About this earthquake

A magnitude M1.6 earthquake was recorded near 32 km NNW of Challis, Idaho (United States) on September 18, 2025 at 15:30 UTC. The hypocenter lay relatively close to the surface at around 6 km, increasing how strongly it was felt. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 175 earthquakes, the strongest at M3.7.

Details

Magnitude
M1.6
Depth
6.5 km
UTC time
2025-09-18 15:30:33 UTC
Local time
—
Country
United States
City
Idaho
Source
usgs
Coordinates
44.77250, -114.41100
Temperature
16.9°C

Map

Depth profile

Depth profile Depth: 6.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 6.5 km
Shallow
6.5 km
6.5 km — shallower than the regional average (15.4 km)
Regional average: 15.4 km
Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Volcanoes nearby

  • Craters of the Moon
    Distance: 172 km ·Volcanic field ·Elevation: 2'005 m ·Last eruption: -130 ·United States
  • Black Butte Crater Lava Field
    Distance: 177 km ·Shield ·Elevation: 1'478 m ·Last eruption: -8180 ·United States
  • Hell's Half Acre
    Distance: 212 km ·Shield ·Elevation: 1'632 m ·Last eruption: -3250 ·United States
  • Wapi Lava Field
    Distance: 231 km ·Shield ·Elevation: 1'597 m ·Last eruption: -300 ·United States
  • Jordan Craters
    Distance: 304 km ·Volcanic field ·Elevation: 1'473 m ·Last eruption: -1250 ·United States
  • Diamond Craters
    Distance: 394 km ·Volcanic field ·Elevation: 1'435 m ·Last eruption: -5610 ·United States

Historic earthquake map · United States

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Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · United States

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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