Posted by: cheryl searcy (csearcy@usgs.gov), Fri Jan 30, 2026 01:01 (0101 UTC)
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"Significant" located earthquakes for January 28, 2026: (picking by Scott Stihler)

Iliamna: 6; Katmai: 4; Pavlof: 4; Spurr: 3; Ugashik-Peulik: 2; Augustine: 1; Gareloi: 1; Makushin: 1; Okmok: 1; Redoubt: 1; Snowy: 1

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Iliamna (6 EQs):
1 low frequency EQ ~1 km ENE of the summit
ML -0.6; Z = 0.8 km

1 low frequency EQ ~5 km E of the summit
ML -0.6; Z = 3.7 km

1 low frequency EQ ~3 km N of the summit
ML -0.6; Z = 0.5 km

1 EQ ~3 km SE of the summit
ML -0.7; Z = -0.1 km

1 EQ ~3 km NE of the summit
ML -0.9; Z = 1.2 km

1 EQ ~5 km SW of the summit
ML -1.0; Z = 3.9 km


Katmai (4 EQs):
1 EQ ~1 km E of the summit
ML 1.0; Z = 3.1 km

1 EQ ~0 km ENE of the summit
ML 0.5; Z = 3.9 km

1 EQ ~1 km SE of the summit
ML -0.1; Z = 3.8 km

1 EQ ~3 km NW of the summit
ML -0.2; Z = 3.0 km


Pavlof (4 EQs):
1 low frequency EQ ~12 km E of the summit
ML 0.3; Z = 7.3 km

1 low frequency EQ ~7 km E of the summit
ML 0.2; Z = 7.6 km

1 low frequency EQ ~12 km SE of the summit
ML -0.1; Z = 6.2 km

1 EQ ~2 km WSW of the summit
ML -0.1; Z = 11.0 km


Spurr (3 EQs):
1 moderately deep low frequency EQ ~4 km WSW of the summit
ML 1.0; Z = 14.2 km

1 EQ ~27 km NE of the summit
ML -0.0; Z = 6.3 km

1 EQ ~6 km W of the summit
ML -0.3; Z = 3.8 km


Ugashik-Peulik (2 EQs):
1 EQ ~24 km ESE of the summit
ML 1.8; Z = 8.4 km

1 EQ ~25 km E of the summit
ML 0.6; Z = 8.8 km


Augustine:
1 EQ ~1 km ENE of the summit
ML 0.4; Z = -0.3 km


Gareloi:
1 EQ ~4 km WNW of the summit
ML 0.8; Z = 8.8 km


Makushin:
1 EQ ~20 km E of the summit
ML 0.1; Z = 8.2 km


Okmok:
1 EQ ~9 km S of the center of caldera
ML 0.7; Z = 4.9 km


Redoubt:
1 low frequency EQ ~1 km S of the summit
ML -1.0; Z = 0.7 km


Snowy:
1 EQ ~12 km NNW of the summit
ML -0.2; Z = 5.1 km

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