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Weak mag. 2.7 earthquake - 10 mi southeast of Ukiah, Mendocino County, California, USA, on Wednesday, Nov 30, 2022 at 4:09 am (GMT -8) -

Weak mag. 2.7 earthquake - 10 mi southeast of Ukiah, Mendocino County, California, USA, on Wednesday, Nov 30, 2022 at 4:09 am (GMT -8) Weak mag. 2.7 earthquake - 10 mi southeast of Ukiah, Mendocino County, California, USA, on Wednesday, Nov 30, 2022 at 4:09 am (GMT -8)

Weak magnitude 2.7 earthquake at 4 km depth

30 Nov 12:13 UTC: First to report: EMSC after 4 minutes.
30 Nov 12:13: Now using data updates from USGS
30 Nov 19:00: Magnitude recalculated from 2.9 to 2.7. Hypocenter depth recalculated from 0.4 to 3.8 km (from 0.2 to 2.4 mi).

Earthquake details

Date & timeNov 30, 2022 12:09:32 UTC -
Local time at epicenterWednesday, Nov 30, 2022 at 4:09 am (GMT -8)
StatusConfirmed
Magnitude2.7
Depth3.8 km
Epicenter latitude / longitude39.04083°N / 123.08617°W (Mendocino, California, United States)
Antipode39.041°S / 56.914°E
Shaking intensityVery weak shaking
Felt2 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoClear Lake (28 km / 17 mi)
Nearby towns and cities8 km (5 mi) NNE of Hopland (pop: 756) | Show on map | Quakes nearby
15 km (9 mi) W of Lakeport (pop: 4,810) | Show on map | Quakes nearby
16 km (10 mi) SE of Ukiah (pop: 15,900) | Show on map | Quakes nearby
22 km (14 mi) WSW of Nice (pop: 2,730) | Show on map | Quakes nearby
41 km (25 mi) WNW of Clearlake (Lake County) (pop: 15,200) | Show on map | Quakes nearby
60 km (37 mi) NNW of Windsor (Sonoma County) (pop: 27,500) | Show on map | Quakes nearby
74 km (46 mi) NNW of Santa Rosa (pop: 175,000) | Show on map | Quakes nearby
147 km (91 mi) WNW of Sacramento (pop: 490,700) | Show on map | Quakes nearby
Weather at epicenter at time of quakeClear Sky -3.8°C (25 F), humidity: 89%, wind: 0 m/s (0 kts)
Estimated seismic energy released7.1 x 108 joules (197 kilowatt hours, equivalent to 0.169 tons of TNT) | about seismic energy
Show interactive Map
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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.DepthLocationSource
2.73.8 km12km SE of Talmage, CAUSGS
2.90 kmNORTHERN CALIFORNIAEMSC
2.73.8 kmNear Coast of N. CaliforniaRaspberryShake
2.910 kmNear Coast Of Northern Calif.IRIS

Seismograms

Seismic station: Marconi Conference Center, Marshall, CA, USA (MCCM/BK network) | Distance from quake: 101 km / 63 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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User reports for this quake (3)

At magnitude 2.7, 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.
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Translate
Daly City,CA (157.9 km SSE of epicenter) [Map] / not felt
Ukiah ca (16.9 km NW of epicenter) [Map] / Very weak shaking (MMI II) / single vertical bump / 1-2 s : I happen to be awake, and felt a shake. The house creeped creeped.  
Hopland / Very weak shaking (MMI II) / single lateral shake / very short : A quick small tremor  

Earlier earthquakes in the same area

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