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Weak mag. 2.1 earthquake - 17 mi northeast of Santa Rosa, Sonoma County, California, USA, on Wednesday, Nov 30, 2022 at 1:36 am (GMT -8) -

Weak magnitude 2.1 earthquake at 7 km depth

30 Nov 09:40 UTC: First to report: USGS after 3 minutes.
30 Nov 10:34: Magnitude recalculated from 2.2 to 2.1. Hypocenter depth recalculated from 0.0 to 7.4 km (from 0 to 4.6 mi). Epicenter location corrected by 3.1 km (1.9 mi) towards ENE.

Earthquake details

Date & time	Nov 30, 2022 09:36:49 UTC -
Local time at epicenter	Wednesday, Nov 30, 2022 at 1:36 am (GMT -8)
Status	Confirmed
Magnitude	2.1
Depth	7.4 km
Epicenter latitude / longitude	38.56317°N / 122.444°W (Napa, California, United States)
Antipode	38.563°S / 57.556°E
Shaking intensity	Very weak shaking
Felt	0 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Clear Lake (53 km / 33 mi)
Nearby towns and cities	4 km (3 mi) NNE of Deer Park (pop: 1,270) \| Show on map \| Quakes nearby 12 km (7 mi) E of Calistoga (Napa County) (pop: 5,330) \| Show on map \| Quakes nearby 27 km (17 mi) ENE of Santa Rosa (pop: 175,000) \| Show on map \| Quakes nearby 32 km (20 mi) E of Windsor (Sonoma County) (pop: 27,500) \| Show on map \| Quakes nearby 33 km (20 mi) NNW of Napa (pop: 80,400) \| Show on map \| Quakes nearby 33 km (21 mi) NE of Rohnert Park (pop: 42,400) \| Show on map \| Quakes nearby 40 km (25 mi) NNE of Petaluma (pop: 60,400) \| Show on map \| Quakes nearby 54 km (33 mi) NNW of Vallejo (pop: 121,300) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Scattered Clouds 2.2°C (36 F), humidity: 67%, wind: 1 m/s (1 kts) from NW
Estimated seismic energy released	8.9 x 10⁷ joules (24.8 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
2.1	7.4 km	4km SW of Angwin, CA	USGS
2.1	7 km	NORTHERN CALIFORNIA	EMSC
2.1	7.4 km	Northern California	RaspberryShake
2.1	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: 60 km / 37 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: 189 km / 117 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: 218 km / 136 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: 332 km / 206 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: Tinemaha (TIN/CI network) | Distance from quake: 406 km / 253 mi | Show on map | Station Info

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

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

Seismic station Tinemaha: 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 2.1, such a quake wouldn't normally be felt by people except under very favorable 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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