Posted by: Matthew Haney (mhaney@usgs.gov), Thu Dec 4, 2025 00:00 (0000 UTC)
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"Significant" located earthquakes for November 30, 2025 (picking by Matt Haney):

Spurr: 4; Katmai: 3; Redoubt: 2; Dutton: 1; Shishaldin: 1

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Spurr (4 EQs):
1 EQ ~19 km S of the summit
ML 1.1; Z = 5.8 km

1 EQ ~19 km S of the summit
ML 0.6; Z = 4.9 km

1 deep low frequency EQ ~5 km SE of the summit
ML -0.4; Z = 20.1 km

1 EQ ~5 km SSE of the summit
ML -0.7; Z = 19.7 km


Katmai (3 EQs):
1 moderately deep low frequency EQ ~2 km SSE of the summit
ML 0.8; Z = 10.7 km

1 EQ ~2 km ESE of the summit
ML 0.3; Z = 7.2 km

1 EQ ~2 km ESE of the summit
ML 0.1; Z = 6.2 km


Redoubt (2 EQs):
1 deep low frequency EQ ~3 km NNW of the summit
ML -0.3; Z = 28.7 km

1 deep low frequency EQ ~6 km NW of the summit
ML -0.3; Z = 33.6 km


Dutton:
1 EQ ~4 km SSW of the summit
ML 0.5; Z = 8.5 km


Shishaldin:
1 low frequency EQ ~1 km SW of the summit
ML 1.1; Z = 1.9 km

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