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Weak mag. 2.1 earthquake - 12 mi southwest of Clearlake, Lake County, California, USA, on Saturday, Mar 18, 2023 at 3:44 am (GMT -7) -

Weak magnitude 2.1 earthquake at 2 km depth

18 Mar 10:46 UTC: First to report: USGS after 2 minutes.

Earthquake details

Date & time	Mar 18, 2023 10:44:44 UTC -
Local time at epicenter	Saturday, Mar 18, 2023 at 3:44 am (GMT -7)
Status	Confirmed
Magnitude	2.1
Depth	1.9 km
Epicenter latitude / longitude	38.81867°N / 122.76217°W (Lake, California, United States)
Antipode	38.819°S / 57.238°E
Shaking intensity	Weak shaking near epicenter
Felt	0 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Clear Lake (17 km / 11 mi)
Nearby towns and cities	3 km (2 mi) W of Cobb (pop: 1,780) \| Show on map \| Quakes nearby 18 km (11 mi) W of Hidden Valley Lake (pop: 5,580) \| Show on map \| Quakes nearby 19 km (12 mi) SW of Clearlake (Lake County) (pop: 15,200) \| Show on map \| Quakes nearby 22 km (14 mi) E of Cloverdale (Sonoma County) (pop: 8,810) \| Show on map \| Quakes nearby 25 km (16 mi) NNE of Russian River (Sonoma County) (pop: 11,700) \| Show on map \| Quakes nearby 31 km (19 mi) N of Windsor (Sonoma County) (pop: 27,500) \| Show on map \| Quakes nearby 42 km (26 mi) N of Santa Rosa (pop: 175,000) \| Show on map \| Quakes nearby 89 km (55 mi) NW of Fairfield (pop: 113,000) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Clear Sky 1.3°C (34 F), humidity: 85%, wind: 2 m/s (3 kts) from NE
Estimated seismic energy released	8.9 x 10⁷ joules (24.8 kilowatt hours) \| 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
2.1	1.9 km	3km W of Cobb, CA	USGS
2.1	1.9 km	Northern California	RaspberryShake
2.1	10 km	Northern California	IRIS
2.1	2 km	NORTHERN CALIFORNIA	EMSC

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

Seismograms

Seismic station: Marconi Conference Center, Marshall, CA, USA (MCCM/BK network) | Distance from quake: 76 km / 47 mi | Show on map | Station Info

Seismic station Marconi Conference Center, Marshall, CA, USA: 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 Marconi Conference Center, Marshall, CA, USA: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Marconi Conference Center, Marshall, CA, USA: 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: San Andreas Geophysical Obs., Hollister, CA, USA (SAO/BK network) | Distance from quake: 256 km / 159 mi | Show on map | Station Info

Seismic station San Andreas Geophysical Obs., Hollister, CA, USA: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station San Andreas Geophysical Obs., Hollister, CA, USA: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station San Andreas Geophysical Obs., Hollister, CA, 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: Mammoth (MLAC/CI network) | Distance from quake: 368 km / 228 mi | Show on map | Station Info

Seismic station Mammoth: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Mammoth: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Mammoth: 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: Valley Oaks Golf Course (VOG/CI network) | Distance from quake: 407 km / 253 mi | Show on map | Station Info

Seismic station Valley Oaks Golf Course: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Valley Oaks Golf Course: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Valley Oaks Golf Course: 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: Crater Lake Bunk House (CLBH/CC network) | Distance from quake: 458 km / 284 mi | Show on map | Station Info

Seismic station Crater Lake Bunk House: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Crater Lake Bunk House: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Crater Lake Bunk House: 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

At magnitude 2.1, such a quake wouldn't normally be felt by people except under very favorable conditions.

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

There are no user reports for this quake.

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