Strong mag. 6.0 earthquake - 118km SE of Cold Bay, Alaska on Monday, 31 December 2018 - information
Strong mag. 6.0 earthquake - 118km SE of Cold Bay, Alaska on Monday, 31 December 2018

Dec 31 02:50: Magnitude recalculated from 5.8 to 5.5.
Hypocenter depth recalculated from 34.0 to 26.3 km.
Dec 31 03:01: Magnitude recalculated from 5.5 to 6.1.
Hypocenter depth recalculated from 26.3 to 26.9 km.
Dec 31 23:56: Magnitude recalculated from 6.1 to 6.0.
Hypocenter depth recalculated from 26.9 to 31.0 km.
Hypocenter depth recalculated from 34.0 to 26.3 km.
Dec 31 03:01: Magnitude recalculated from 5.5 to 6.1.
Hypocenter depth recalculated from 26.3 to 26.9 km.
Dec 31 23:56: Magnitude recalculated from 6.1 to 6.0.
Hypocenter depth recalculated from 26.9 to 31.0 km.
Local time at epicenter: 2018-12-30 15:35:37 -11:00
Magnitude: 6.0
Depth: 31.0 km
Epicenter latitude / longitude: 54.3874°N / 161.5066°W

Nearest volcano: Dutton (115 km)
Primary data source: USGS
Estimated released energy: 6.3*10^13 J (17.5 GWh / 15080 tons of TNT / 0.9 atomic bombs equivalent) [learn more]
Data for same earthquake as reported from other agencies
Time | Mag. / Depth | Location | Source | |
Mon, 31 Dec 2018 | ||||
Mon, 31 Dec 02:35 UTC | M 6.0 / 10 km | Alaska Peninsula | GFZ | |
Mon, 31 Dec 02:35 UTC | M 6.1 / 47 km | ALASKA PENINSULA | EMSC | |
Mon, 31 Dec 02:35 UTC | M 6.0 / 29.4 km | Alaska Peninsula | GeoAu | |
Mon, 31 Dec 02:35 UTC | M 6.1 / 34.4 km | Alaska Peninsula, United States [Sea: United States] | INGV |
"I felt it" reports:
Southwest Anchorage, AK (1015.5 km NE from epicenter) [Map] / not felt: I didn’t feel this one luckily. I already had quite the day experiencing the 7.1 Anchorage main shock and its aftershocks.
Wasilla / MMI VI (Strong shaking)
Anchorage, AK (1026.9 km NE from epicenter) [Map] / MMI IV (Light shaking): Moderate, quick shake. (via app)
Kenai / MMI III (Weak shaking)
Mayne Island / MMI II (Very weak shaking): Disregard previous report. I misread the time.
Talkeetna / MMI III (Weak shaking)
99507 / MMI IV (Light shaking)
Earthquakes in same area up to 1 year afterwards (aftershocks) - show
Earthquakes in same area up to 1 year afterwards (likely aftershocks)
Time | Mag. / Depth | Location | Map | Source |
Fri, 4 Jan 2019 | ||||
Fri, 4 Jan 13:27 UTC | M 3.3 / 24.9 km - [info] | - 115km SE of Cold Bay, Alaska | [Map] | USGS |