Posted by: Matthew Haney (mhaney@usgs.gov), Fri Dec 12, 2025 01:55 (0155 UTC)
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"Significant" located earthquakes for December 10, 2025 (picking by Scott Stihler):

Iliamna: 5; Novarupta: 4; Redoubt: 4; Gareloi: 2; Semisopochnoi: 2; Augustine: 1; Great Sitkin: 1; Martin: 1; Wrangell: 1; Steller: 1

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Iliamna (5 EQs):
1 low frequency EQ ~5 km ENE of the summit
ML -0.2; Z = 6.2 km

1 EQ ~4 km ENE of the summit
ML -0.7; Z = 1.3 km

1 EQ ~3 km NNE of the summit
ML -0.7; Z = 2.0 km

1 EQ ~2 km ESE of the summit
ML -0.8; Z = 0.9 km

1 EQ ~2 km SSW of the summit
ML -1.0; Z = 0.7 km


Novarupta (4 EQs):
1 low frequency EQ ~4 km N of the 1912 dome
ML -0.2; Z = 5.5 km

1 low frequency EQ ~4 km NE of the 1912 dome
ML -0.3; Z = 6.9 km

1 EQ ~3 km WNW of the 1912 dome
ML -0.5; Z = -0.2 km

1 low frequency EQ ~4 km N of the 1912 dome
ML -0.6; Z = 2.5 km


Redoubt (4 EQs):
1 EQ ~7 km NNW of the summit
ML 0.6; Z = 5.6 km

1 EQ ~17 km ENE of the summit
ML 0.4; Z = 13.3 km

1 EQ ~14 km NW of the summit
ML 0.3; Z = 9.1 km

1 EQ ~4 km NE of the summit
ML -0.8; Z = 2.3 km


Gareloi (2 EQs):
1 EQ ~9 km W of the summit
ML 1.1; Z = 7.4 km

1 EQ ~9 km WNW of the summit
ML 0.5; Z = 8.0 km


Semisopochnoi (2 EQs):
1 EQ ~15 km SSW of the Mount Young
ML 1.6; Z = 2.8 km

1 low frequency EQ ~4 km SW of the Mount Young
ML 1.4; Z = 7.6 km


Augustine:
1 EQ ~0 km SW of the summit
ML 0.4; Z = -0.0 km


Great Sitkin:
1 low frequency EQ ~5 km WNW of the summit
ML 0.2; Z = 9.2 km


Martin:
1 EQ ~2 km ESE of the summit
ML 0.0; Z = -0.2 km


Wrangell:
1 moderately deep low frequency EQ ~5 km N of the summit
ML 1.5; Z = 12.1 km


Steller:
1 EQ ~9 km SW of the summit
ML 0.1; Z = -2.1 km

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