M 4.5 earthquake – 256 km SE of Chiniak, Alaska
·
Local time: Jan 23, 2018 · 01:09 (UTC-9)
LightShallow · 17 km
Reviewed by a seismologist
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- Magnitude
- 4.5body-wave magnitude (mb)
- Depth
- 17 kmShallow earthquake
- Epicenter
- 55.980, -149.321584 km from Anchorage
- Energy released
- 85 tons of TNTless than one Hiroshima bomb
- Felt reports
- —"Did You Feel It?" responses
- Shaking intensity
- —not estimated
- Aftershocks
- 500M2.5+ within 30 km, up to 60 days
- Significance
- 312USGS score, 0–1,000+
Not rare around here
An earthquake at least as strong struck within 300 km on Jan 23, 2018.
How strong was it?
Light earthquake. It released 85 tons of TNT, 5.6 times less than a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.
Aftershocks
500 earthquakes of M2.5+ within 30 km in the 60 days after.
- 4.3 249 km SE of Chiniak, Alaska Jan 23, 2018
- 4.2 248 km SE of Chiniak, Alaska Jan 23, 2018
- 4.2 250 km SE of Chiniak, Alaska Jan 23, 2018
- 3.9 267 km SE of Chiniak, Alaska Jan 23, 2018
- 4.5 275 km SE of Chiniak, Alaska Jan 23, 2018
- 3.5 230 km SE of Chiniak, Alaska Jan 23, 2018
- 3.7 237 km SE of Chiniak, Alaska Jan 23, 2018
- 3.4 270 km SE of Chiniak, Alaska Jan 23, 2018
- 3.9 233 km SE of Chiniak, Alaska Jan 23, 2018
- 3.7 275 km SE of Chiniak, Alaska Jan 23, 2018
The strongest earthquakes within 300 km
Since 1900, around United States.
- 7.9 261 km SE of Chiniak, Alaska Jan 23, 2018
- 7.9 Kodiak Island region, Alaska Oct 9, 1900
- 7.0 153 km SE of Halibut Cove, Alaska Dec 23, 1906
- 6.9 47 km S of Old Harbor, Alaska Jan 10, 2001
- 6.8 100 km SSE of Old Harbor, Alaska Jun 19, 1986
- 6.7 120 km S of Akhiok, Alaska Apr 10, 1957
- 6.6 88 km SSE of Old Harbor, Alaska Dec 21, 1917
- 6.6 94 km SSE of Old Harbor, Alaska Apr 12, 1978
In the week before
Earthquakes within 30 km in the 7 days before this one: possible foreshocks.