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Moderate mag. 4.3 earthquake - North Pacific Ocean, Oregon, USA, on Thursday, Mar 16, 2023 at 11:16 pm (GMT -9) -

Moderate mag. 4.3 earthquake - North Pacific Ocean, Oregon, USA, on Thursday, Mar 16, 2023 at 11:16 pm (GMT -9) Moderate mag. 4.3 earthquake - North Pacific Ocean, Oregon, USA, on Thursday, Mar 16, 2023 at 11:16 pm (GMT -9)

Moderate magnitude 4.3 earthquake at 10 km depth

17 Mar 08:32 UTC: First to report: USGS after 16 minutes.

Earthquake details

Date & timeMar 17, 2023 08:16:05 UTC -
Local time at epicenterThursday, Mar 16, 2023 at 11:16 pm (GMT -9)
Depth10.0 km
Epicenter latitude / longitude43.6578°N / 128.1969°W (North Pacific Ocean, Oregon, United States)
Antipode43.658°S / 51.803°E
Shaking intensityLight shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoNorth Gorda Ridge (159 km / 99 mi)
Nearby towns and cities
Weather at epicenter at time of quakeOvercast Clouds 7°C (45 F), humidity: 73%, wind: 1 m/s (2 kts) from SSW
Estimated seismic energy released1.8 x 1011 joules (49.4 megawatt hours, equivalent to 42.5 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.
4.310 kmOff the Coast of OregonUSGS
4.310 kmOff Coast of OregonRaspberryShake
4.310 kmOff Coast Of OregonIRIS


Seismic station: RSN Hydrate Summit 1-4 (HYS14/OO network) | Distance from quake: 264 km / 164 mi | Show on map | Station Info
Seismic station RSN Hydrate Summit 1-4: 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: 0.2-10.0 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.
Medford Oregon / not felt (reported through our app)

Earlier earthquakes in the same area

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