M 5.4 earthquake – 119 km WNW of Arctic Village, Alaska
·
Local time: Aug 21, 2003 · 15:31 (UTC-8)
ModerateShallow · 21 km
Reviewed by a seismologist
Loading the map…
- Magnitude
- 5.4moment magnitude (mw)
- Depth
- 21 kmShallow earthquake
- Epicenter
- 68.678, -148.040428 km from Fairbanks
- Energy released
- 1.9 kilotons of TNTless than one Hiroshima bomb
- Felt reports
- —"Did You Feel It?" responses
- Shaking intensity
- —not estimated
- Aftershocks
- 8M2.5+ within 30 km, up to 60 days
- Significance
- 449USGS score, 0–1,000+
The strongest here since 1985
The last earthquake at least as strong within 300 km struck on Mar 10, 1985.
How strong was it?
Moderate earthquake. It released 1.9 kilotons of TNT, 4 times the energy of a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.
Aftershocks
8 earthquakes of M2.5+ within 30 km in the 60 days after.
- 2.6 113 km WNW of Arctic Village, Alaska Aug 22, 2003
- 2.5 116 km WNW of Arctic Village, Alaska Aug 22, 2003
- 2.6 113 km WNW of Arctic Village, Alaska Aug 22, 2003
- 2.5 120 km WNW of Arctic Village, Alaska Aug 22, 2003
- 4.3 117 km WNW of Arctic Village, Alaska Aug 23, 2003
- 2.8 111 km WNW of Arctic Village, Alaska Aug 23, 2003
- 2.5 104 km WNW of Arctic Village, Alaska Aug 24, 2003
- 3.3 112 km WNW of Arctic Village, Alaska Sep 21, 2003
The strongest earthquakes within 300 km
Since 1900, around United States.
- 6.4 89 km SW of Kaktovik, Alaska Aug 12, 2018
- 6.2 49 km WNW of Stevens Village, Alaska Mar 9, 1985
- 6.0 73 km SSW of Kaktovik, Alaska Aug 12, 2018
- 5.5 50 km WNW of Stevens Village, Alaska Mar 10, 1985
- 5.3 115 km NNE of Arctic Village, Alaska Jul 3, 2019
- 5.3 81 km SW of Kaktovik, Alaska Aug 12, 2018
- 5.3 56 km NW of Stevens Village, Alaska Mar 9, 1985
- 5.3 63 km NW of Beaver, Alaska Dec 20, 1966