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Minor mag. 1.8 earthquake - 7.9 mi southeast of Hidden Valley Lake, Lake County, California, USA, on Wednesday, Nov 30, 2022 at 7:13 am (GMT -8) -

Minor magnitude 1.8 earthquake at 4 km depth

30 Nov 15:17 UTC: First to report: USGS after 4 minutes.
30 Nov 18:54: Magnitude recalculated from 1.9 to 1.8. Hypocenter depth recalculated from 4.1 to 4.4 km (from 2.5 to 2.7 mi).

Earthquake details

Date & time	Nov 30, 2022 15:13:44 UTC -
Local time at epicenter	Wednesday, Nov 30, 2022 at 7:13 am (GMT -8)
Status	Confirmed
Magnitude	1.8
Depth	4.4 km
Epicenter latitude / longitude	38.75417°N / 122.4295°W (Lake, California, United States)
Antipode	38.754°S / 57.571°E
Shaking intensity	Very weak shaking
Felt	0 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Clear Lake (38 km / 24 mi)
Nearby towns and cities	13 km (8 mi) ESE of Hidden Valley Lake (pop: 5,580) \| Show on map \| Quakes nearby 20 km (12 mi) N of Angwin (pop: 3,050) \| Show on map \| Quakes nearby 23 km (15 mi) NNE of Calistoga (Napa County) (pop: 5,330) \| Show on map \| Quakes nearby 28 km (18 mi) SE of Clearlake (Lake County) (pop: 15,200) \| Show on map \| Quakes nearby 41 km (25 mi) NE of Windsor (Sonoma County) (pop: 27,500) \| Show on map \| Quakes nearby 43 km (27 mi) NE of Santa Rosa (pop: 175,000) \| Show on map \| Quakes nearby 52 km (32 mi) NNE of Rohnert Park (pop: 42,400) \| Show on map \| Quakes nearby 59 km (36 mi) NW of Vacaville (pop: 96,800) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Broken Clouds 1.9°C (35 F), humidity: 62%, wind: 1 m/s (1 kts) from W
Estimated seismic energy released	3.2 x 10⁷ joules (8.78 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
1.8	4.4 km	13km ESE of Hidden Valley Lake, CA	USGS
1.8	4.4 km	Northern California	RaspberryShake
1.9	10 km	Northern California	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: 78 km / 49 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: 195 km / 121 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: 238 km / 148 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: 338 km / 210 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: Valley Oaks Golf Course (VOG/CI network) | Distance from quake: 381 km / 237 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

User reports for this quake

At magnitude 1.8, such a quake wouldn't normally be felt by people, but could be recorded instrumentally.

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