M 5.8 earthquake – 221 km SE of Attu Station, Alaska
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Local time: Feb 4, 1965 · 18:39 (UTC+12)
ModerateShallow · 25 km
Reviewed by a seismologist
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- Magnitude
- 5.8moment magnitude (mw)
- Depth
- 25 kmShallow earthquake
- Epicenter
- 51.626, 175.7461,172 km from Petropavlovsk-Kamchatsky
- Energy released
- 7.6 kilotons of TNTless than one Hiroshima bomb
- Felt reports
- —"Did You Feel It?" responses
- Shaking intensity
- —not estimated
- Aftershocks
- 2M2.5+ within 30 km, up to 60 days
- Significance
- 526USGS score, 0–1,000+
Not rare around here
An earthquake at least as strong struck within 300 km on Feb 4, 1965.
How strong was it?
Moderate earthquake. It released 7.6 kilotons of TNT, 16 times the energy of a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.
Aftershocks
2 earthquakes of M2.5+ within 30 km in the 60 days after.
The strongest earthquakes within 300 km
Since 1900, around United States.
- 8.7 1965 Western Aleutian Islands (Hawadax/Rat Islands) Earthquake Feb 4, 1965
- 8.3 1906 Western Aleutian Islands (Hawadax/Rat Islands) Earthquake Aug 17, 1906
- 7.9 Rat Islands, Aleutian Islands, Alaska Jun 23, 2014
- 7.8 Rat Islands, Aleutian Islands, Alaska Nov 17, 2003
- 7.6 36 km NE of Attu Station, Alaska Feb 2, 1975
- 7.6 Rat Islands, Aleutian Islands, Alaska Mar 30, 1965
- 7.4 265 km WSW of Adak, Alaska Feb 4, 1965
- 7.4 151 km S of Attu Station, Alaska Sep 2, 1907