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Minor mag. 1.1 earthquake - 12km E of Ocotillo Wells, CA, on Thursday, Dec 1, 2022 at 7:33 am (GMT -8) -

Minor magnitude 1.1 earthquake at 4 km depth

1 Dec 15:37 UTC: First to report: USGS after 3 minutes.
1 Dec 15:38: Magnitude recalculated from 1.2 to 1.1. Hypocenter depth recalculated from 3.2 to 3.1 km (from 2 to 1.9 mi). Epicenter location corrected by 1 km (0.6 mi) towards WNW.
1 Dec 19:54: Hypocenter depth recalculated from 3.1 to 4.3 km (from 1.9 to 2.7 mi). Epicenter location corrected by 0.7 km (0.4 mi) towards S.

Earthquake details

Date & time	Dec 1, 2022 15:33:56 UTC -
Local time at epicenter	Thursday, Dec 1, 2022 at 7:33 am (GMT -8)
Status	Confirmed
Magnitude	1.1
Depth	4.3 km
Epicenter latitude / longitude	33.16317°N / 116.00833°W (California, United States)
Antipode	33.163°S / 63.992°E
Shaking intensity	Not felt
Felt
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Salton Buttes (36 km / 22 mi)
Nearby towns and cities	16 km (10 mi) SSW of Salton City (pop: 3,760) \| Show on map \| Quakes nearby 49 km (30 mi) WNW of Brawley (Imperial County) (pop: 25,900) \| Show on map \| Quakes nearby 59 km (36 mi) NW of El Sentro (pop: 44,000) \| Show on map \| Quakes nearby 60 km (37 mi) SSE of Coachella (pop: 44,600) \| Show on map \| Quakes nearby 62 km (39 mi) SSE of La Quinta (pop: 40,500) \| Show on map \| Quakes nearby 65 km (40 mi) SSE of Indian Wells (pop: 87,500) \| Show on map \| Quakes nearby 71 km (44 mi) SSE of Palm Desert (pop: 51,900) \| Show on map \| Quakes nearby 81 km (50 mi) SSE of Cathedral City (pop: 53,800) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Broken Clouds 6.4°C (43 F), humidity: 50%, wind: 2 m/s (4 kts) from W
Estimated seismic energy released	2.8 x 10⁶ joules (0.783 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
1.1	4.3 km	12km E of Ocotillo Wells, CA	USGS
1.1	4.3 km	Southern California	RaspberryShake
1.1	10 km	Southern California	IRIS

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

Seismograms

Seismic station: Lost Valley Scout Camp, CA, USA (LVA2/AZ network) | Distance from quake: 56 km / 35 mi | Show on map | Station Info

Seismic station Lost Valley Scout Camp, 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 Lost Valley Scout Camp, CA, USA: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Lost Valley Scout Camp, 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: In-Ko-Pah (IKP/CI network) | Distance from quake: 58 km / 36 mi | Show on map | Station Info

Seismic station In-Ko-Pah: vertical movement plot around time of quake (source: IRIS/BUD)

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

Seismic station In-Ko-Pah: 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: Pinon Flat Observatory, CA, USA (BPH11/PY network) | Distance from quake: 64 km / 40 mi | Show on map | Station Info

Seismic station Pinon Flat Observatory, CA, USA: vertical movement plot around time of quake (source: IRIS/BUD)

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

Seismic station Pinon Flat Observatory, 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: Jim Saunders Place, Anza, CA, USA (SND/AZ network) | Distance from quake: 71 km / 44 mi | Show on map | Station Info

Seismic station Jim Saunders Place, Anza, CA, USA: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Jim Saunders Place, Anza, CA, USA: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Jim Saunders Place, Anza, 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: Cary Ranch, Anza, CA, USA (CRY/AZ network) | Distance from quake: 81 km / 50 mi | Show on map | Station Info

Seismic station Cary Ranch, Anza, CA, USA: vertical movement plot around time of quake (source: IRIS/BUD)

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

Seismic station Cary Ranch, Anza, 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

User reports for this quake (5)

At magnitude 1.1, such a quake wouldn't normally be felt by people, but could be recorded instrumentally.

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

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San Diego (101.6 km WSW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / very short : just a short lift up, as if someone pushed me up and then dropped me, but it was very slight. Like a roll

El Cajon California / Weak shaking (MMI III) / single lateral shake / 1-2 s : Felt like house was hit from all sides. Having experienced many earthquakes, even though this one was very short 1-2 seconds, the sudden jolt was strong enough to know it was an earthquake.

Rosarito Baja California (129.8 km SW of epicenter) [Map] / Very weak shaking (MMI II)

Chula Vista, california / Light shaking (MMI IV) / rattling, vibrating / 1-2 s : Light shaking, tumbling

92656 / Light shaking (MMI IV) / rattling, vibrating : vibrating walls cracklling lightly

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