Mag. 2.1 earthquake - Lake, 4.9 mi south of Cobb, California, USA, on 28 Oct 1:58 am (GMT -7) -
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Minor magnitude 2.1 earthquake at 3 km depth
28 Oct 08:59 UTC: First to report: USGS after 2 minutes.
Local time at epicenter: 28 Oct 1:58 am (GMT -7)
Magnitude: 2.1
Depth: 2.5 km
Epicenter latitude / longitude: 38.7525°N / 122.70316°W
(Lake, California, United States)Nearest volcano: Clear Lake (25 km / 16 mi)
Nearby towns and cities:
8 km (5 mi) W of Middletown (pop: 1,320) --> See nearby quakes!
8 km (5 mi) SSE of Cobb (pop: 1,780) --> See nearby quakes!
21 km (13 mi) NE of Healdsburg (Sonoma County) (pop: 11,700) --> See nearby quakes!
22 km (14 mi) NNW of Calistoga (Napa County) (pop: 5,330) --> See nearby quakes!
24 km (15 mi) SSW of Clearlake (Lake County) (pop: 15,200) --> See nearby quakes!
25 km (15 mi) NNE of Windsor (Sonoma County) (pop: 27,500) --> See nearby quakes!
35 km (22 mi) N of Santa Rosa (pop: 175,000) --> See nearby quakes!
46 km (29 mi) N of Rohnert Park (pop: 42,400) --> See nearby quakes!
3915 km (2432 mi) WNW of Washington (District of Columbia) (pop: 601,700) --> See nearby quakes!
3915 km (2432 mi) WNW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky
10.4°C (51 F), humidity: 50%, wind: 1 m/s (3 kts) from NE
Primary data source: USGS (United States Geological Survey)
Clear Sky
10.4°C (51 F), humidity: 50%, wind: 1 m/s (3 kts) from NEEstimated released energy: 8.9 x 107 joules (24.8 kilowatt hours) 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 2.1 | 2.5 km | 3km SSW of Anderson Springs, CA, USA | USGS |
| M 2.3 | 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 2.1, this quake was probably too small to be felt by humans, but it could be recorded instrumentally.
509.3 km SSE of epicenter [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
Earlier earthquakes in the same area
Mag. 2.1 earthquake - Lake, 4.9 mi south of Cobb, California, USA, on 28 Oct 1:58 am (GMT -7)
Click here to search our database for earlier earthquakes in the same area since 1900!
