Mag. 2.1 earthquake - 4.4 mi west of Middletown, California, USA, on 24 Sep 9:01 am (GMT -7) -
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Minor magnitude 2.1 earthquake at 1 km depth
24 Sep 14:48 UTC: First to report: USGS after 2 minutes.
Local time at epicenter: 24 Sep 9:01 am (GMT -7)
Depth: 0.6 km
Epicenter latitude / longitude: 38.73817°N / 122.6945°W (Lake County, California, United States)
Nearest volcano: Clear Lake (27 km / 17 mi)
Nearby towns and cities:
7 km (4 mi) WSW of Middletown (pop: 1,320) --> See nearby quakes!
10 km (6 mi) SSE of Cobb (pop: 1,780) --> See nearby quakes!
20 km (13 mi) NNW of Calistoga (Napa County) (pop: 5,330) --> See nearby quakes!
21 km (13 mi) NE of Healdsburg (Sonoma County) (pop: 11,700) --> See nearby quakes!
24 km (15 mi) NNE of Windsor (Sonoma County) (pop: 27,500) --> See nearby quakes!
25 km (16 mi) SSW of Clearlake (Lake County) (pop: 15,200) --> See nearby quakes!
33 km (21 mi) N of Santa Rosa (pop: 175,000) --> See nearby quakes!
44 km (28 mi) N of Rohnert Park (pop: 42,400) --> See nearby quakes!
3914 km (2432 mi) WNW of Washington (District of Columbia) (pop: 601,700) --> See nearby quakes!
3914 km (2432 mi) WNW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated 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.
|M 2.1||0.6 km||4km S of Anderson Springs, CA, USA||USGS|
|M 2.1||1 km||Northern California, USA||EMSC|
User reports for this quake
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.