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Minor mag. 1.2 earthquake - 4km S of Boonville, CA, on Tuesday, Dec 6, 2022 at 7:54 am (GMT -8) -

Minor magnitude 1.2 earthquake at 4 km depth

6 Dec 17:40 UTC: First to report: USGS after 1 hour and 46 minutes.
6 Dec 18:52: Magnitude recalculated from 1.1 to 1.2. Hypocenter depth recalculated from 4.8 to 3.9 km (from 3 to 2.4 mi). Epicenter location corrected by 0.6 km (0.4 mi) towards SSW.

Earthquake details

Date & time	Dec 6, 2022 15:54:14 UTC -
Local time at epicenter	Tuesday, Dec 6, 2022 at 7:54 am (GMT -8)
Status	Confirmed
Magnitude	1.2
Depth	3.9 km
Epicenter latitude / longitude	38.976°N / 123.367°W (California, United States)
Antipode	38.976°S / 56.633°E
Shaking intensity	Not felt
Felt
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Clear Lake (52 km / 32 mi)
Nearby towns and cities	4 km (2 mi) S of Boonville (pop: 1,040) \| Show on map \| Quakes nearby 24 km (15 mi) SW of Ukiah (pop: 15,900) \| Show on map \| Quakes nearby 36 km (22 mi) WNW of Cloverdale (Sonoma County) (pop: 8,810) \| Show on map \| Quakes nearby 40 km (25 mi) W of Lakeport (pop: 4,810) \| Show on map \| Quakes nearby 64 km (40 mi) W of Clearlake (Lake County) (pop: 15,200) \| Show on map \| Quakes nearby 67 km (42 mi) NW of Windsor (Sonoma County) (pop: 27,500) \| Show on map \| Quakes nearby 82 km (51 mi) NW of Santa Rosa (pop: 175,000) \| Show on map \| Quakes nearby 91 km (57 mi) NW of Rohnert Park (pop: 42,400) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake
Estimated seismic energy released	4 x 10⁶ joules (1.11 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
1.2	3.9 km	4km S of Boonville, CA	USGS
1.2	3.9 km	Near Coast of N. California	RaspberryShake
1.1	10 km	Near Coast Of Northern Calif.	IRIS

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: 102 km / 63 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: Columbia College, Columbia, CA, USA (CMB/BK network) | Distance from quake: 280 km / 174 mi | Show on map | Station Info

Seismic station Columbia College, Columbia, CA, USA: vertical movement plot around time of quake (source: IRIS/BUD)

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

Seismic station Columbia College, Columbia, 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: San Andreas Geophysical Obs., Hollister, CA, USA (SAO/BK network) | Distance from quake: 298 km / 185 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: 423 km / 263 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: Crater Lake Bunk House (CLBH/CC network) | Distance from quake: 449 km / 279 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 1.2, such a quake wouldn't normally be felt by people, but could be recorded instrumentally.

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