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Iceland earthquakes, October 2025

3,698 earthquakes in Iceland in October 2025. Largest M4.2 near Bárðarbunga at 0.0 km depth. 13 reached magnitude 3 or greater.

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By the numbers

Total earthquakes
3,698
Largest earthquake
M4.2
near Bárðarbunga
Depth range
0.0 km - 25.0 km
Most active area
Kleifarvatn
M4.2 near Bárðarbunga - 0.0 km km deep - 29 October 2025, 16:46 UTCView this quake on the map

By magnitude

<M1
3,154
M1-2
468
M2-3
63
M3-4
12
M4-5
1
M5+
0

In context

  • The most active month in Iceland since August 2025.
  • Its largest quake, M4.2, was the biggest in Iceland since July 2025.