Mag. 2.3 earthquake - Napa County, 8.6 mi east of Angwin, California, USA, on 28 Oct 12:45 pm (GMT -7) -
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Minor magnitude 2.3 earthquake at 1 km depth
28 Oct 19:47 UTC: First to report: USGS after 2 minutes.
Local time at epicenter: 28 Oct 12:45 pm (GMT -7)
Magnitude: 2.3
Depth: 0.9 km
Epicenter latitude / longitude: 38.5515°N / 122.29467°W
(Napa County, California, United States)Nearest volcano: Clear Lake (62 km / 39 mi)
Nearby towns and cities:
14 km (9 mi) E of Angwin (pop: 3,050) --> See nearby quakes!
25 km (16 mi) E of Calistoga (Napa County) (pop: 5,330) --> See nearby quakes!
28 km (18 mi) N of Napa (pop: 80,400) --> See nearby quakes!
34 km (21 mi) NW of Vacaville (pop: 96,800) --> See nearby quakes!
39 km (24 mi) ENE of Santa Rosa (pop: 175,000) --> See nearby quakes!
40 km (25 mi) NW of Fairfield (pop: 113,000) --> See nearby quakes!
43 km (26 mi) NE of Rohnert Park (pop: 42,400) --> See nearby quakes!
50 km (31 mi) N of Vallejo (pop: 121,300) --> See nearby quakes!
3886 km (2415 mi) WNW of Washington (District of Columbia) (pop: 601,700) --> See nearby quakes!
3886 km (2415 mi) WNW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky
24.5°C (76 F), humidity: 38%, wind: 0 m/s (1 kts) from SE
Primary data source: USGS (United States Geological Survey)
Clear Sky
24.5°C (76 F), humidity: 38%, wind: 0 m/s (1 kts) from SEEstimated released energy: 1.8 x 108 joules (49.4 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 2.3 | 0.9 km | 14km E of Angwin, CA, USA | USGS |
| M 2.3 | 1 km | Northern California, USA | EMSC |
User reports for this quake (2)
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
At magnitude 2.3, this quake was probably too small to be felt by humans, but it could be recorded instrumentally.
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Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Lakeport, CA / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : What a scare! This time my cats ran into the bedroom and three or four seconds later there was a shaking like a semi-truck was on the roof! i rolled onto the floor and covered the back of my head. I was praying and whimpering maybe crying just, just a little. my wife was fast to get to me and she reached down and grabbed me by filling both nose holes with her ring and pinky fingers jammed in and pulled me up to my knees and slapped me (she slaps hard!!) She told me "you know what that was for" a | One user found this interesting.
Davis CA (49.1 km E of epicenter) [Map] / Very weak shaking (MMI II)
Earlier earthquakes in the same area
Mag. 2.3 earthquake - Napa County, 8.6 mi east of Angwin, California, USA, on 28 Oct 12:45 pm (GMT -7)
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