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Minor mag. 1.2 earthquake - 15km E of Seven Trees, CA, on Thursday, Dec 1, 2022 at 12:25 am (GMT -8) -

Minor magnitude 1.2 earthquake at 7 km depth

1 Dec 08:27 UTC: First to report: USGS after 2 minutes.
1 Dec 17:24: Magnitude recalculated from 1.3 to 1.2. Hypocenter depth recalculated from 5.9 to 6.7 km (from 3.7 to 4.2 mi).

Earthquake details

Date & time	Dec 1, 2022 08:25:26 UTC -
Local time at epicenter	Thursday, Dec 1, 2022 at 12:25 am (GMT -8)
Status	Confirmed
Magnitude	1.2
Depth	6.7 km
Epicenter latitude / longitude	37.30633°N / 121.67317°W (California, United States)
Antipode	37.306°S / 58.327°E
Shaking intensity	Not felt
Felt
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Clear Lake (208 km / 129 mi)
Nearby towns and cities	15 km (9 mi) ESE of East Foothills (pop: 8,270) \| Show on map \| Quakes nearby 20 km (12 mi) N of Morgan Hill (pop: 42,900) \| Show on map \| Quakes nearby 20 km (12 mi) E of San Jose (pop: 1,026,900) \| Show on map \| Quakes nearby 25 km (15 mi) E of Campbell (pop: 41,100) \| Show on map \| Quakes nearby 25 km (15 mi) ESE of Milpitas (pop: 77,600) \| Show on map \| Quakes nearby 26 km (16 mi) E of Santa Clara (pop: 126,200) \| Show on map \| Quakes nearby 33 km (20 mi) ESE of seonibeil (pop: 151,800) \| Show on map \| Quakes nearby 39 km (24 mi) SE of Fremont (pop: 232,200) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Overcast Clouds 4.8°C (41 F), humidity: 76%, wind: 2 m/s (3 kts) from SE
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	6.7 km	15km E of Seven Trees, CA	USGS
1.2	6.7 km	Central California	RaspberryShake
1.3	10 km	Central California	IRIS

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

Seismograms

Seismic station: San Andreas Geophysical Obs., Hollister, CA, USA (SAO/BK network) | Distance from quake: 64 km / 39 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)

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 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, 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: 139 km / 87 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: Valley Oaks Golf Course (VOG/CI network) | Distance from quake: 231 km / 144 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: Mammoth (MLAC/CI network) | Distance from quake: 253 km / 157 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: Simmler (SMM/CI network) | Distance from quake: 268 km / 166 mi | Show on map | Station Info

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

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

Seismic station Simmler: 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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