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Minor mag. 1.2 earthquake - 17km NW of Parkfield, CA, on Thursday, Dec 1, 2022 at 3:18 am (GMT -8) -

Minor magnitude 1.2 earthquake at 2 km depth

1 Dec 11:20 UTC: First to report: USGS after 2 minutes.
1 Dec 18:48: Hypocenter depth recalculated from 1.4 to 2.4 km (from 0.9 to 1.5 mi).

Earthquake details

Date & time	Dec 1, 2022 11:18:29 UTC -
Local time at epicenter	Thursday, Dec 1, 2022 at 3:18 am (GMT -8)
Status	Confirmed
Magnitude	1.2
Depth	2.4 km
Epicenter latitude / longitude	36.00083°N / 120.56617°W (California, United States)
Antipode	36.001°S / 59.434°E
Shaking intensity	Very weak shaking
Felt	0 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Golden Trout Creek (206 km / 128 mi)
Nearby towns and cities	16 km (10 mi) NW of Parkfield (Monterey County) (pop: 18) \| Show on map \| Quakes nearby 24 km (15 mi) SW of Coalinga (Fresno County) (pop: 16,600) \| Show on map \| Quakes nearby 43 km (27 mi) NNE of Paso Robles (San Luis Obispo County) (pop: 27,200) \| Show on map \| Quakes nearby 58 km (36 mi) N of Atascadero (San Luis Obispo County) (pop: 29,800) \| Show on map \| Quakes nearby 80 km (50 mi) N of San Luis Obispo (pop: 47,300) \| Show on map \| Quakes nearby 90 km (56 mi) WSW of Hanford (pop: 55,700) \| Show on map \| Quakes nearby 109 km (68 mi) SW of Fresno (pop: 520,100) \| Show on map \| Quakes nearby 123 km (77 mi) SE of Salinas (pop: 157,400) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Overcast Clouds 5.8°C (42 F), humidity: 82%, wind: 3 m/s (5 kts) from SSW
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	2.4 km	17km NW of Parkfield, CA	USGS
1.2	2.4 km	Central California	RaspberryShake
1.2	10 km	Central California	IRIS

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

Seismograms

Seismic station: Simmler (SMM/CI network) | Distance from quake: 92 km / 57 mi | Show on map | Station Info

Seismic station Simmler: 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 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, showing horizontal E-W and N-S ground movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Valley Oaks Golf Course (VOG/CI network) | Distance from quake: 112 km / 70 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: San Andreas Geophysical Obs., Hollister, CA, USA (SAO/BK network) | Distance from quake: 116 km / 72 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: Vestal (VES/CI network) | Distance from quake: 135 km / 84 mi | Show on map | Station Info

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

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

Seismic station Vestal: 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: Calstate Bakersfield (BAK/CI network) | Distance from quake: 151 km / 94 mi | Show on map | Station Info

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

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

Seismic station Calstate Bakersfield: 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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