Posted by: Matthew Haney (mhaney@usgs.gov), Mon Dec 15, 2025 07:40 (0740 UTC)
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"Significant" located earthquakes for December 13, 2025 (picking by Scott Stihler):

Takawangha: 4; Katmai: 2; Augustine: 1; Great Sitkin: 1; Mageik: 1; Martin: 1; Redoubt: 1; Spurr: 1; Trident: 1; Westdahl: 1; Fourpeaked: 1

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Takawangha (4 EQs):
1 EQ ~6 km E of the summit
ML 1.5; Z = 5.3 km

1 EQ ~6 km E of the summit
ML 1.4; Z = 3.8 km

1 EQ ~13 km E of the summit
ML 0.6; Z = 8.2 km

1 EQ ~6 km E of the summit
ML 0.3; Z = 7.1 km


Katmai (2 EQs):
1 EQ ~1 km SSE of the summit
ML 0.4; Z = 2.3 km

1 EQ ~1 km E of the summit
ML 0.2; Z = 6.7 km


Augustine:
1 EQ ~2 km NE of the summit
ML 1.2; Z = 13.6 km


Great Sitkin:
1 EQ ~3 km W of the summit
ML 0.5; Z = 3.5 km


Mageik:
1 EQ ~0 km WSW of the summit
ML 0.3; Z = 1.7 km


Martin:
1 EQ ~1 km NNW of the summit
ML 0.0; Z = 0.7 km


Redoubt:
1 EQ ~11 km ENE of the summit
ML -0.2; Z = 5.9 km


Spurr:
1 EQ ~8 km SE of the summit
ML 0.1; Z = 23.3 km


Trident:
1 EQ ~2 km NW of the summit
ML 0.7; Z = 3.7 km


Westdahl:
1 EQ ~3 km W of the summit
ML 1.3; Z = 3.3 km


Fourpeaked:
1 EQ ~8 km SSW of the summit
ML 0.6; Z = 5.1 km

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