Mag. 4.2 earthquake - 1km WSW of The Geysers, CA (USA), on 2019-11-03 12:34:57 -08:00 -

Mag. 4.2 earthquake  - 1km WSW of The Geysers, CA (USA), on 2019-11-03 12:34:57 -08:00

Light magnitude 4.2 earthquake at 3 km depth

3 Nov 20:39 UTC: First to report: USGS after 4 minutes.
Nov 3 20:40: Magnitude recalculated from 3.9 to 4.1.
Nov 3 21:08: Magnitude recalculated from 4.1 to 4.2.
Hypocenter depth recalculated from 2.2 to 3.1 km.
Date & time: 3 Nov 2019 08:34:57 UTC -
Local time at epicenter: 2019-11-03 12:34:57 -08:00
Magnitude: 4.2
Depth: 3.1 km
Epicenter latitude / longitude: 38.775°N / 122.767°W (United States)
Nearest volcano: Clear Lake (22 km / 14 mi)
Nearby towns and cities:
6 km (4 mi) SW of Cobb (pop: 1,780)
18 km (11 mi) WSW of Hidden Valley Lake (pop: 5,580)
20 km (13 mi) NNE of Healdsburg (Sonoma County) (pop: 11,700)
22 km (14 mi) E of Cloverdale (Sonoma County) (pop: 8,810)
24 km (15 mi) SSW of Clearlake (Lake County) (pop: 15,200)
37 km (23 mi) N of Santa Rosa (pop: 175,000)
113 km (70 mi) W of Sacramento (pop: 490,700)
115 km (72 mi) NNW of San Francisco (pop: 864,800)
Primary data source: USGS
Estimated released energy: 1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 tons of TNT) More info
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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.
M 4.23.1 km1km WSW of The Geysers, CA (USA)USGS
M 4.12 kmNorthern California (USA)EMSC

User reports for this quake (12)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Denver Colorado / Moderate shaking (MMI V) : n
Geysers, CA / Violent shaking (MMI IX)
Concord, CA (109.4 km SE of epicenter) [Map] / not felt (reported through our app)
Healdsburg Ca / Light shaking (MMI IV)
Healdsburg (United States of America, 21 km SW of epicenter) : Definitely felt it (reported through EMSC)
Galt (United States of America, 141 km SE of epicenter) : Felt a rolling motion (reported through EMSC)
Sacramento (United States of America, 113 km E of epicenter) : Room shook while i was watching TV (reported through EMSC)
Sacramento (United States of America, 110 km E of epicenter) : I felt a few slight bumps while laying on my bed - thought earthquake? Noted the time, checked this site just now and yep it was what I thought it was. (reported through EMSC)
Reno (United States of America, 269 km E of epicenter) : Felt a rumble (reported through EMSC)
San Mateo (United States of America, 143 km S of epicenter) : didn't feel it (reported through EMSC)
Santa Rosa (United States of America, 38 km S of epicenter) : This CANNOT be right- I could maybe see many of us sleeping through the 7AM 3.9 yesterday due to exhaustion or such after returning from wildfire evacs, but nobody even noticing a 4.1 in early afternoon on a Sunday??? When we are directly downstream of the faultlines and energy?? And most people would catch a mid 3 normally? Something is off here; lifetime N CA earthquake zones resident for nearly 60 years and not worried about most quakes, let alone at The Geysers pressure release points, and there is no way this is accurate data reporting. JS (reported through EMSC)
Middletown (United States of America, 14 km E of epicenter) : Could hear it coming, and it lasted for a while. (reported through EMSC)
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Earlier earthquakes in the same area

Mag. 4.2 earthquake - 1km WSW of The Geysers, CA (USA), on 2019-11-03 12:34:57 -08:00
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