M 7.6 earthquake – 2020 Sand Point, Alaska Earthquake
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Local time: Oct 19, 2020 · 12:54 (UTC-8)
MajorShallow · 28 kmPAGER yellowTsunami information issued
Reviewed by a seismologist
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- Magnitude
- 7.6moment magnitude (mww)
- Depth
- 28 kmShallow earthquake
- Epicenter
- 54.602, -159.626932 km from Anchorage
- Energy released
- 3.8 megatons of TNTabout 253 × Hiroshima
- Felt reports
- 321"Did You Feel It?" responses
- Shaking intensity
- 7.3max. instrumental (MMI)
- Aftershocks
- 500M2.5+ within 166 km, up to 60 days
- Significance
- 1,165USGS score, 0–1,000+
Not rare around here
An earthquake at least as strong struck within 300 km on Jul 22, 2020.
How strong was it?
Major earthquake. It released 3.8 megatons of TNT, 7,943 times the energy of a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.
Aftershocks
500 earthquakes of M2.5+ within 166 km in the 60 days after.
- 4.2 95 km SSE of Sand Point, Alaska Oct 19, 2020
- 5.7 114 km SSE of Sand Point, Alaska Oct 19, 2020
- 5.7 104 km SSE of Sand Point, Alaska Oct 19, 2020
- 3.9 119 km SSE of Sand Point, Alaska Oct 19, 2020
- 3.2 83 km ESE of Sand Point, Alaska Oct 19, 2020
- 5.0 125 km SSE of Sand Point, Alaska Oct 19, 2020
- 3.5 86 km SSE of Sand Point, Alaska Oct 19, 2020
- 4.6 98 km SSE of Sand Point, Alaska Oct 19, 2020
- 4.2 80 km SSE of Sand Point, Alaska Oct 19, 2020
- 4.5 127 km SSE of Sand Point, Alaska Oct 19, 2020
The strongest earthquakes within 300 km
Since 1900.
- 8.6 The 1946 Unimak Island, Alaska Earthquake Apr 1, 1946
- 8.2 1938 Semidi Islands, Alaska Earthquake Nov 10, 1938
- 8.2 2021 Chignik, Alaska Earthquake Jul 29, 2021
- 7.8 2020 Perryville, Alaska Earthquake Jul 22, 2020
- 7.4 54 km SE of Sand Point, Alaska May 31, 1917
- 7.3 2025 Sand Point, Alaska Earthquake Jul 16, 2025
- 7.2 2023 Sand Point, Alaska Earthquake Jul 16, 2023
- 7.1 90 km SE of King Cove, Alaska May 14, 1948
In the week before
Earthquakes within 166 km in the 7 days before this one: possible foreshocks.