Mag. 2.9 earthquake - 3.2 mi southwest of Cobb, California, USA, on 24 Sep 3:11 am (GMT -7) -
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Minor magnitude 2.9 earthquake at 1 km depth
24 Sep 10:14 UTC: First to report: USGS after 3 minutes.
Local time at epicenter: 24 Sep 3:11 am (GMT -7)
Magnitude: 2.9
Depth: 1.2 km
Epicenter latitude / longitude: 38.80383°N / 122.7775°W

Nearest volcano: Clear Lake (18 km / 11 mi)
Nearby towns and cities:
5 km (3 mi) WSW of Cobb (pop: 1,780) --> See nearby quakes!
19 km (12 mi) W of Hidden Valley Lake (pop: 5,580) --> See nearby quakes!
20 km (12 mi) SSE of Kelseyville (pop: 3,350) --> See nearby quakes!
21 km (13 mi) E of Cloverdale (Sonoma County) (pop: 8,810) --> See nearby quakes!
22 km (13 mi) SW of Clearlake (Lake County) (pop: 15,200) --> See nearby quakes!
23 km (14 mi) NNE of Healdsburg (Sonoma County) (pop: 11,700) --> See nearby quakes!
29 km (18 mi) N of Windsor (Sonoma County) (pop: 27,500) --> See nearby quakes!
41 km (25 mi) N of Santa Rosa (pop: 175,000) --> See nearby quakes!
3919 km (2435 mi) WNW of Washington (District of Columbia) (pop: 601,700) --> See nearby quakes!
3919 km (2435 mi) WNW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky
14.1°C (57 F), humidity: 88%, wind: 2 m/s (4 kts) from NW
Primary data source: USGS (United States Geological Survey)
Clear Sky

Estimated released energy: 1.4 x 109 joules (392 kilowatt hours, equivalent to 0.338 tons of TNT) More info
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.
Magnitude | Depth | Location | Source |
M 2.9 | 1.2 km | 4km NNW of The Geysers, CA, USA | USGS |
M 2.9 | 1 km | Northern California, USA | EMSC |
User reports for this quake (1)
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
At magnitude 2.9, this quake might have been felt very close to the epicenter and under calm conditions.