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Light mag. 3.6 earthquake - 50 mi west of Kalifornsky, Kenai Peninsula, Alaska, USA, on Sunday, Oct 30, 2022 at 8:02 pm (GMT -8) -

Light magnitude 3.6 earthquake at 12 km depth

31 Oct 04:04 UTC: First to report: EMSC after 2 minutes.
31 Oct 04:05: Now using data updates from USGS
31 Oct 16:42: Magnitude recalculated from 3.4 to 3.6. Hypocenter depth recalculated from 0.7 to 12.0 km (from 0.4 to 7.5 mi). Epicenter location corrected by 11 km (7.1 mi) towards WNW.

Earthquake details

Date & time	Oct 31, 2022 04:02:18 UTC -
Local time at epicenter	Sunday, Oct 30, 2022 at 8:02 pm (GMT -8)
Status	Confirmed
Magnitude	3.6
Depth	12.0 km
Epicenter latitude / longitude	60.4308°N / 152.77°W (Kenai Peninsula, Alaska, United States)
Antipode	60.431°S / 27.23°E
Shaking intensity	Not felt
Felt	0 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Redoubt (6 km / 4 mi)
Nearby towns and cities	74 km (46 mi) NW of Ninilchik (pop: 883) \| Show on map \| Quakes nearby 81 km (50 mi) W of Kalifornsky (pop: 7,850) \| Show on map \| Quakes nearby 84 km (52 mi) W of Kenai (pop: 7,660) \| Show on map \| Quakes nearby 86 km (53 mi) WSW of Nikiski (pop: 4,490) \| Show on map \| Quakes nearby 89 km (56 mi) NW of Anchor Point (pop: 1,930) \| Show on map \| Quakes nearby 94 km (58 mi) W of Soldotna (pop: 4,540) \| Show on map \| Quakes nearby 179 km (111 mi) WSW of Alaska City (pop: 298,700) \| Show on map \| Quakes nearby 200 km (124 mi) WSW of Eagle River (pop: 24,800) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Broken Clouds -15.6°C (4 F), humidity: 72%, wind: 5 m/s (10 kts) from WNW
Estimated seismic energy released	1.6 x 10¹⁰ joules (4.4 megawatt hours, equivalent to 3.79 tons of TNT) \| about seismic energy

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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.

Mag.	Depth	Location	Source
3.6	12 km	74 Km NW of Ninilchik, Alaska	USGS
4.0	8 km	SOUTHERN ALASKA	EMSC
3.4	10 km	Southern Alaska	IRIS
3.6	12 km	Southern Alaska	RaspberryShake

Most recent quakes Top 20 past 24 hrs Quakes in the US Alaska

Seismograms

Seismic station: Redoubt Volcano, Redoubt Volcano, Alaska (RED/AV network) | Distance from quake: 1 km / 1 mi | Show on map | Station Info

Seismic station Redoubt Volcano, Redoubt Volcano, Alaska: vertical movement plot around time of quake (source: IRIS/BUD)

Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.5-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

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Seismic station Redoubt Volcano, Redoubt Volcano, Alaska: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Redoubt Volcano, Redoubt Volcano, Alaska: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake, showing horizontal E-W and N-S ground movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Iliamna Volcano, Alaska (ILLG/AV network) | Distance from quake: 42 km / 26 mi | Show on map | Station Info

Seismic station Iliamna Volcano, Alaska: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Iliamna Volcano, Alaska: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Iliamna Volcano, Alaska: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Bonanza Creek NPS repeater, AK, USA (N19K/AK network) | Distance from quake: 103 km / 64 mi | Show on map | Station Info

Seismic station Bonanza Creek NPS repeater, AK, USA: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Bonanza Creek NPS repeater, AK, USA: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Bonanza Creek NPS repeater, AK, USA: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Katmai Hook Glacier, Alaska (KAHG/AV network) | Distance from quake: 238 km / 148 mi | Show on map | Station Info

Seismic station Katmai Hook Glacier, Alaska: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Katmai Hook Glacier, Alaska: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Katmai Hook Glacier, Alaska: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Paxson, AK, USA (PAX/AK network) | Distance from quake: 477 km / 296 mi | Show on map | Station Info

Seismic station Paxson, AK, USA: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Paxson, AK, USA: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Paxson, AK, USA: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.

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Nikiski / not felt (reported through our app)

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