Posted by: cheryl searcy (csearcy@usgs.gov), Sat Dec 20, 2025 21:02 (2102 UTC)
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"Significant" located earthquakes for December 19, 2025: (picking by Scott Stihler)
Makushin: 24; Spurr: 7; Iliamna: 5; Cleveland: 2; Great Sitkin: 2; Katmai: 2; Novarupta: 2; Fourpeaked: 2; Edgecumbe: 1; Gareloi: 1; Redoubt: 1; Ukinrek Maars: 1
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Makushin (24 EQs):
1 EQ ~20 km E of the summit
ML 3.5; Z = 8.5 km
1 EQ ~20 km E of the summit
ML 3.2; Z = 8.6 km
1 EQ ~20 km E of the summit
ML 1.0; Z = 7.7 km
1 EQ ~20 km E of the summit
ML 0.6; Z = 8.5 km
1 EQ ~19 km E of the summit
ML 0.3; Z = 7.2 km
1 EQ ~20 km E of the summit
ML 0.3; Z = 8.5 km
1 EQ ~20 km E of the summit
ML 0.1; Z = 7.5 km
1 EQ ~19 km E of the summit
ML 0.1; Z = 8.1 km
1 low frequency EQ ~2 km SW of the summit
ML 0.0; Z = 7.4 km
1 EQ ~20 km E of the summit
ML 0.0; Z = 7.3 km
1 EQ ~20 km E of the summit
ML 0.0; Z = 8.0 km
1 EQ ~20 km E of the summit
ML -0.0; Z = 7.3 km
1 EQ ~20 km E of the summit
ML -0.0; Z = 7.5 km
1 EQ ~2 km SE of the summit
ML -0.0; Z = 6.6 km
1 EQ ~20 km E of the summit
ML -0.1; Z = 7.5 km
1 EQ ~20 km E of the summit
ML -0.1; Z = 6.8 km
1 EQ ~20 km E of the summit
ML -0.2; Z = 7.7 km
1 EQ ~20 km E of the summit
ML -0.2; Z = 7.2 km
1 EQ ~2 km ESE of the summit
ML -0.2; Z = 4.6 km
1 EQ ~21 km SE of the summit
ML -0.3; Z = 8.5 km
1 EQ ~20 km E of the summit
ML -0.3; Z = 7.4 km
1 EQ ~19 km ESE of the summit
ML -0.5; Z = 8.0 km
1 EQ ~3 km ESE of the summit
ML -0.6; Z = 4.6 km
1 EQ ~20 km E of the summit
ML -0.7; Z = 7.2 km
Spurr (7 EQs):
1 EQ ~30 km S of the summit
ML 0.3; Z = 12.1 km
1 EQ ~28 km S of the summit
ML 0.0; Z = 14.0 km
1 EQ ~24 km ESE of the summit
ML -0.0; Z = 18.0 km
1 EQ ~4 km N of the summit
ML -0.1; Z = 3.1 km
1 moderately deep low frequency EQ ~6 km SE of the summit
ML -0.5; Z = 19.3 km
1 EQ ~14 km S of the summit
ML -0.5; Z = 4.5 km
1 EQ ~13 km S of the summit
ML -0.6; Z = 4.2 km
Iliamna (5 EQs):
1 EQ ~0 km S of the summit
ML -0.3; Z = -1.2 km
1 EQ ~4 km S of the summit
ML -0.6; Z = 5.3 km
1 EQ ~3 km S of the summit
ML -0.7; Z = 0.8 km
1 EQ ~1 km NE of the summit
ML -0.8; Z = 3.0 km
1 EQ ~2 km SW of the summit
ML -1.0; Z = 1.0 km
Cleveland (2 EQs):
1 EQ ~6 km SSE of the summit
ML 0.5; Z = 8.3 km
1 EQ ~4 km S of the summit
ML 0.3; Z = 12.1 km
Great Sitkin (2 EQs):
1 low frequency EQ ~8 km N of the summit
ML 1.2; Z = 5.7 km
1 EQ ~9 km N of the summit
ML 0.7; Z = 7.6 km
Katmai (2 EQs):
1 EQ ~3 km SW of the summit
ML 0.3; Z = 2.6 km
1 EQ ~1 km SSE of the summit
ML 0.0; Z = 2.5 km
Novarupta (2 EQs):
1 EQ ~4 km SSW of the 1912 dome
ML 0.1; Z = 4.4 km
1 EQ ~0 km SW of the 1912 dome
ML -1.1; Z = 4.6 km
Fourpeaked (2 EQs):
1 EQ ~5 km WSW of the summit
ML 1.6; Z = 10.7 km
1 EQ ~10 km SW of the summit
ML 0.7; Z = 9.0 km
Edgecumbe:
1 EQ ~1 km WNW of the summit
ML 0.1; Z = 7.8 km
Gareloi:
1 EQ ~2 km NW of the summit
ML 0.4; Z = 6.6 km
Redoubt:
1 EQ ~3 km N of the summit
ML -0.6; Z = 3.9 km
Ukinrek Maars:
1 EQ ~29 km NNE of the summit
ML 0.3; Z = 6.9 km
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