Posted by: cheryl searcy (csearcy@usgs.gov), Wed Dec 31, 2025 17:59 (1759 UTC)
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"Significant" located earthquakes for December 30, 2025: (picking by Scott Stihler)

Spurr: 6; Iliamna: 4; Westdahl: 4; Martin: 3; Katmai: 2; Akutan: 1; Cleveland: 1; Great Sitkin: 1; Griggs: 1; Makushin: 1

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Spurr (6 EQs):
1 EQ ~4 km WNW of the summit
ML 0.8; Z = -2.3 km

1 EQ ~11 km S of the summit
ML -0.2; Z = 4.0 km

1 EQ ~11 km S of the summit
ML -0.3; Z = 4.2 km

1 EQ ~6 km W of the summit
ML -0.3; Z = 2.6 km

1 EQ ~8 km S of the summit
ML -0.3; Z = 4.8 km

1 EQ ~14 km S of the summit
ML -1.0; Z = 5.5 km


Iliamna (4 EQs):
1 EQ ~2 km NNE of the summit
ML -0.5; Z = 0.4 km

1 EQ ~3 km SSE of the summit
ML -0.6; Z = 0.1 km

1 low frequency EQ ~4 km NNE of the summit
ML -0.6; Z = 1.2 km

1 EQ ~3 km SSW of the summit
ML -0.8; Z = 2.4 km


Westdahl (4 EQs):
1 EQ ~11 km ENE of the summit
ML 1.8; Z = 9.6 km

1 EQ ~13 km ENE of the summit
ML 1.2; Z = 6.3 km

1 EQ ~13 km ENE of the summit
ML 1.2; Z = 11.4 km

1 EQ ~11 km ENE of the summit
ML 1.2; Z = 9.0 km


Martin (3 EQs):
1 EQ ~8 km S of the summit
ML -0.1; Z = 1.5 km

1 EQ ~0 km NNE of the summit
ML -0.4; Z = 2.3 km

1 EQ ~1 km WSW of the summit
ML -0.5; Z = -0.0 km


Katmai (2 EQs):
1 EQ ~6 km ESE of the summit
ML -0.1; Z = 5.3 km

1 EQ ~3 km NW of the summit
ML -0.2; Z = 3.2 km


Akutan:
1 EQ ~1 km NNW of the summit
ML 0.4; Z = 2.6 km


Cleveland:
1 EQ ~6 km SE of the summit
ML 1.1; Z = 8.8 km


Great Sitkin:
1 EQ ~3 km W of the summit
ML 0.3; Z = -1.8 km


Griggs:
1 low frequency EQ ~6 km E of the summit
ML 0.3; Z = 6.1 km


Makushin:
1 EQ ~16 km E of the summit
ML -0.3; Z = 5.4 km

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