M 5.5 earthquake – Rat Islands, Aleutian Islands, Alaska
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Local time: Nov 17, 2003 · 19:12 (UTC+12)
ModerateShallow · 33 km
Reviewed by a seismologist
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- Magnitude
- 5.5body-wave magnitude (mb)
- Depth
- 33 kmShallow earthquake
- Epicenter
- 51.275, 177.6111,307 km from Petropavlovsk-Kamchatsky
- Energy released
- 2.7 kilotons of TNTless than one Hiroshima bomb
- Felt reports
- —"Did You Feel It?" responses
- Shaking intensity
- —not estimated
- Aftershocks
- 91M2.5+ within 30 km, up to 60 days
- Significance
- 465USGS score, 0–1,000+
Not rare around here
An earthquake at least as strong struck within 300 km on Nov 17, 2003.
How strong was it?
Moderate earthquake. It released 2.7 kilotons of TNT, 5.6 times the energy of a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.
Aftershocks
91 earthquakes of M2.5+ within 30 km in the 60 days after.
- 4.5 Rat Islands, Aleutian Islands, Alaska Nov 17, 2003
- 4.1 Rat Islands, Aleutian Islands, Alaska Nov 17, 2003
- 4.0 Rat Islands, Aleutian Islands, Alaska Nov 17, 2003
- 5.0 Rat Islands, Aleutian Islands, Alaska Nov 17, 2003
- 3.6 Rat Islands, Aleutian Islands, Alaska Nov 17, 2003
- 3.4 Rat Islands, Aleutian Islands, Alaska Nov 17, 2003
- 4.7 Rat Islands, Aleutian Islands, Alaska Nov 17, 2003
- 3.5 Rat Islands, Aleutian Islands, Alaska Nov 17, 2003
- 3.1 Rat Islands, Aleutian Islands, Alaska Nov 17, 2003
- 3.7 Rat Islands, Aleutian Islands, Alaska Nov 17, 2003
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 Rat Islands, Aleutian Islands, Alaska Mar 30, 1965
- 7.4 265 km WSW of Adak, Alaska Feb 4, 1965
- 7.2 238 km SSE of Attu Station, Alaska Sep 8, 1939
- 7.2 207 km WSW of Adak, Alaska Dec 19, 2007
In the week before
Earthquakes within 30 km in the 7 days before this one: possible foreshocks.