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Weak mag. 2.5 earthquake - 22km NE of San Ardo, CA, on Tuesday, Oct 4, 2022 at 8:40 am (GMT -7) -

Weak magnitude 2.5 earthquake at 9 km depth

4 Oct 15:42 UTC: First to report: USGS after 2 minutes.
4 Oct 19:04: Hypocenter depth recalculated from 8.2 to 8.5 km (from 5.1 to 5.3 mi). Epicenter location corrected by 0.6 km (0.4 mi) towards WSW.

Earthquake details

Date & time	Oct 4, 2022 15:40:09 UTC -
Local time at epicenter	Tuesday, Oct 4, 2022 at 8:40 am (GMT -7)
Status	Confirmed
Magnitude	2.5
Depth	8.5 km
Epicenter latitude / longitude	36.16033°N / 120.7385°W (California, United States)
Antipode	36.16°S / 59.262°E
Shaking intensity	Very weak shaking
Felt	0 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Golden Trout Creek (218 km / 135 mi)
Nearby towns and cities	22 km (13 mi) NE of San Bernardo (pop: 517) \| Show on map \| Quakes nearby 34 km (21 mi) W of Coalinga (Fresno County) (pop: 16,600) \| Show on map \| Quakes nearby 35 km (22 mi) E of King City (Monterey County) (pop: 13,900) \| Show on map \| Quakes nearby 49 km (30 mi) ESE of Greenfield (pop: 17,200) \| Show on map \| Quakes nearby 60 km (37 mi) N of Paso Robles (San Luis Obispo County) (pop: 27,200) \| Show on map \| Quakes nearby 60 km (37 mi) ESE of Soledad (pop: 25,000) \| Show on map \| Quakes nearby 100 km (62 mi) SE of Salinas (pop: 157,400) \| Show on map \| Quakes nearby 108 km (67 mi) SW of Fresno (pop: 520,100) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Clear Sky 21.1°C (70 F), humidity: 39%, wind: 0 m/s (1 kts) from NE
Estimated seismic energy released	3.5 x 10⁸ joules (98.6 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
2.5	8.5 km	22km NE of San Ardo, CA	USGS
2.5	8 km	CENTRAL CALIFORNIA	EMSC
2.5	8.5 km	Central California	RaspberryShake
2.5	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: 92 km / 57 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: Simmler (SMM/CI network) | Distance from quake: 116 km / 72 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

Seismic station: Vestal (VES/CI network) | Distance from quake: 153 km / 95 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: Arvin (ARV/CI network) | Distance from quake: 207 km / 129 mi | Show on map | Station Info

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

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

Seismic station Arvin: 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: Laurel Mtn (LRL/CI network) | Distance from quake: 286 km / 178 mi | Show on map | Station Info

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

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

Seismic station Laurel Mtn: 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 2.5, this quake might have been felt very close to the epicenter and under calm 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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