Open Earth

M5.6 quake 43 km NNW of Lake Minchumina, Alaska leads 46 notable earthquakes on 15 October 2026

Daily planet briefing

Quakes M2.5+

46

83 of any size

Strongest

M5.6

43 km NNW of Lake Minchumina, Alaska

Other hazards

1

Fires, storms, floods, eruptions

Peak Kp

3.0

Geomagnetic activity

Earthquakes

Seismic networks reported 83 earthquakes in total, 46 of them magnitude 2.5 or above. That is in line with the previous week's average of 48 a day.

The strongest was a magnitude 5.6 43 km NNW of Lake Minchumina, Alaska, at a depth of 5 km. 106 people reported feeling it.

Across the day, 6 quakes reached magnitude 5 or more, 17 quakes reached magnitude 4 or more.

The most active countries were United States (19), Samoa (3) and Guatemala (2).

Volcanoes, fires, storms and floods

New entries on the hazard record: 1 wildfire.

Sky & Space

The planetary K-index peaked at Kp 3.0, quiet conditions.

5 asteroids passed Earth. The closest, (2026 TP6), came within 0.6 lunar distances and is 14 m across.