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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 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 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 & timeOct 31, 2022 04:02:18 UTC -
Local time at epicenterSunday, Oct 30, 2022 at 8:02 pm (GMT -8)
StatusConfirmed
Magnitude3.6
Depth12.0 km
Epicenter latitude / longitude60.4308°N / 152.77°W (Kenai Peninsula, Alaska, United States)
Antipode60.431°S / 27.23°E
Shaking intensityNot felt
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoRedoubt (6 km / 4 mi)
Nearby towns and cities74 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 quakeBroken Clouds -15.6°C (4 F), humidity: 72%, wind: 5 m/s (10 kts) from WNW
Estimated seismic energy released1.6 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.DepthLocationSource
3.612 km74 Km NW of Ninilchik, AlaskaUSGS
4.08 kmSOUTHERN ALASKAEMSC
3.410 kmSouthern AlaskaIRIS
3.612 kmSouthern AlaskaRaspberryShake

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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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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