Moderate mag. 5.1 earthquake - Sonoma County, 6.3 mi west of Cobb, Lake County, California, USA, on Wednesday, 14 December 2016 at 16:41 (GMT)

Moderate mag. 5.1 earthquake  - Sonoma County, 6.3 mi west of Cobb, Lake County, California, USA, on Wednesday, 14 December 2016 at 16:41 (GMT)

Moderate magnitude 5.1 earthquake at 1 km depth

14 Dec 16:45 UTC: First to report: EMSC after 5 minutes.
Dec 14 16:47: Magnitude recalculated from 4.7 to 5.0.
Dec 14 19:06: Magnitude recalculated from 5.0 to 5.1.
Date & time: 14 Dec 2016 16:41:05 UTC
Magnitude: 5.1
Depth: 1.0 km
Epicenter latitude / longitude: 38.82°N / 122.84°W (Sonoma County, California, United States)
Nearest volcano: Clear Lake (18 km / 11 mi)
Nearby towns and cities:
10 km (6 mi) W of Cobb (pop: 1,780) --> See nearby quakes!
15 km (10 mi) E of Cloverdale (Sonoma County) (pop: 8,810) --> See nearby quakes!
18 km (11 mi) S of Kelseyville (pop: 3,350) --> See nearby quakes!
23 km (15 mi) N of Healdsburg (Sonoma County) (pop: 11,700) --> See nearby quakes!
24 km (15 mi) SW of Clearlake (Lake County) (pop: 15,200) --> See nearby quakes!
24 km (15 mi) W of Hidden Valley Lake (pop: 5,580) --> See nearby quakes!
29 km (18 mi) SE of Hopland (pop: 756) --> See nearby quakes!
44 km (27 mi) NNW of Santa Rosa (pop: 175,000) --> See nearby quakes!
3924 km (2438 mi) WNW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
3924 km (2438 mi) WNW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
Primary data source: EMSC (European-Mediterranean Seismological Centre)
Estimated released energy: 2.8 x 1012 joules (783 megawatt hours, equivalent to 674 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.
MagnitudeDepthLocationSource
M 5.11 km NORTHERN CALIFORNIAEMSC
M 5.01.5 km- 8km NW of The Geysers, CaliforniaUSGS
M 5.110 kmNear Coast of N. CaliforniaGFZ

shake map
(shakemap: USGS)

User reports for this quake (40)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Royersford / Weak shaking (MMI III)
livermore, ca / not felt : Didn't feel a damn thing in the east bay... damn.
710.2 km SE of epicenter [Map] / not felt : Didnt feel it (reported through our app)
Pine Mountain (13.6 km W of epicenter) [Map] / Light shaking (MMI IV) : I felt the ground lift under my feet while outside on dirt road.
clear lake ca / Light shaking (MMI IV) : First sounded knocking on glass door then entire trailer swayed while shaking lasted appr.8-10 sec
34.9 km SE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
Lakeport,California (26.3 km NNW of epicenter) [Map] / Strong shaking (MMI VI) : Rocked my travel trailer pretty good. (reported through our app)
Gilroy (224.6 km SSE of epicenter) [Map] / not felt : Did not feel it but, dogs in neighborhood were barking (reported through our app)
Kelseyville / Light shaking (MMI IV) : Mild shake
39.2 km SSE of epicenter [Map] / Weak shaking (MMI III)
Cloverdale / Light shaking (MMI IV) : House gently rocked back and forth
Napa (United States, 73 km SE of epicenter) : Adding to previous noteIt was a long rolling floating sensation quake (reported through EMSC)
San Francisco (United States, 128 km S of epicenter) : I felt dizzy - speaker dropped - lost balance - felt vibration in ground. (reported through EMSC)
San Francisco (United States, 122 km S of epicenter) : I was at work on the 11th floor SF office building on Market St. (reported through EMSC)
Santa Rosa (United States, 44 km S of epicenter) : Very slow swaying and seemed to last a long time. (reported through EMSC)
Santa Rosa (United States, 44 km S of epicenter) : Several people had felt it when I arrived at the office, but many did not. Everyone who felt it said it was a rolling wave. (reported through EMSC)
Fulton (United States, 37 km S of epicenter) : Long slow rolling motion. Dogs slept thru it! (reported through EMSC)
Cloverdale (United States, 15 km W of epicenter) : Being the Holiday Seasons. Our Christmas tree swayed and ornaments fell to the floor. Outside my hanging plants swayed. Both my pets a boxer and a cat alerted they looked puzzled. I must say my heart rate went up. It felt as if the earth quake was really close by. (reported through EMSC)
Santa Rosa (United States, 44 km S of epicenter) : I was sitting in car outside. Gentle rolling. (reported through EMSC)
Healdsburg (United States, 23 km S of epicenter) : No (reported through EMSC)
Kelseyville (United States, 18 km N of epicenter) : It was the biggest I have ever felt. Lasted several seconds. Almost long enough to get worried. (reported through EMSC)
Cloverdale (United States, 15 km W of epicenter) : It was a rolling feeling as if on water. It was one of the longest lasting I have ever felt. Long enough for me to realize it was a quake and go outside and it was still rolling at that point. (reported through EMSC)
San Francisco (United States, 122 km S of epicenter) : Swaying was orginally in east/west direction but became north/south. 5-10 seconds swaying (reported through EMSC)
San Francisco (United States, 120 km S of epicenter) : Gentle rocking feeling (reported through EMSC)
Napa (United States, 75 km SE of epicenter) : Rolling. Very light. 10 seconds. (reported through EMSC)
Sea Ranch (United States, 53 km W of epicenter) : Windows shook. Shook me awake in bed. (reported through EMSC)
Ukiah (United States, 49 km NW of epicenter) : Sitting in my car, I felt it shake side to side and one up and down roll. (reported through EMSC)
Ukiah (United States, 49 km NW of epicenter) : Felt initial jolt, and desk was swaying motion, everyone in our office felt it and felt slightly dizzy. Lasted a couple of seconds. I was on the phone with another coworker in another part of the building, and he also felt. (reported through EMSC)
Santa Rosa (United States, 44 km S of epicenter) : I heard the window blinds gently hit the windows. I was seated and felt a mild swaying motion. I'm not sure how long it lasted, maybe 10-15 seconds. (reported through EMSC)
Santa Rosa (United States, 44 km S of epicenter) : a little rolling around this morning. (reported through EMSC)
Angwin (United States, 43 km SE of epicenter) : Lasted a few seconds. (reported through EMSC)
Angwin (United States, 43 km SE of epicenter) : One of my dogs kept barking this morning starting about 7:45am PST. She would NOT keep quiet or settle down... (reported through EMSC)
Angwin (United States, 43 km SE of epicenter) : Gentle roller for about 10 seconds. (reported through EMSC)
Calistoga (United States, 35 km SE of epicenter) : Lasted for 10 seconds or more bed shook doors and windows shook entire time (reported through EMSC)
Calistoga (United States, 35 km SE of epicenter) : Just a lot of jiggling around. Felt the couch moving then noticed all the ornaments swinging on the tree. (reported through EMSC)
Lakeport (United States, 26 km NW of epicenter) : Felt like a rattling more than a rolling or shaking. (reported through EMSC)
Clearlake (United States, 24 km NE of epicenter) : It lasted a good 10 seconds, a very distinct rumble (reported through EMSC)
Healdsburg (United States, 23 km S of epicenter) : I was upstairs in bed & the bed shook like crazy and the house made cracking sounds. It felt like it lasted a long Time. (reported through EMSC)
Healdsburg (United States, 23 km S of epicenter) : Pretty heavy shaking and rattling going on (reported through EMSC)
Healdsburg (United States, 21 km S of epicenter) : Barely felt it outside of Healdsburg but still kind of large. Right on the fault too. Hope everyone is okay and everything is okay. (reported through EMSC)
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Aftershocks of the 5.1 quake Sonoma County, 6.3 mi west of Cobb, Lake County, California, USA, 14 December 2016 16:41 GMT

More info
Recorded aftershocks, latest first (65 quakes):
  • 11 Feb 2017 18:04 UTC
    | M 2.1 |
    3 km (1.9 mi) depth
    |
    4 km (3 mi) distance
    | EMSC | Details
  • 10 Feb 2017 18:40 UTC
    | M 2.7 |
    0 km (0 mi) depth
    |
    7 km (4 mi) distance
    | EMSC | Details
  • 10 Feb 2017 07:11 UTC
    | M 2.3 |
    2 km (1.2 mi) depth
    |
    3 km (2 mi) distance
    | EMSC | Details
  • 10 Feb 2017 03:39 UTC
    | M 2.4 |
    1.1 km (0.7 mi) depth
    |
    3 km (2 mi) distance
    | USGS | Details
  • 09 Feb 2017 06:10 UTC
    | M 2.0 |
    1 km (0.6 mi) depth
    |
    8 km (5 mi) distance
    | EMSC | Details
  • 08 Feb 2017 02:00 UTC
    | M 2.4 |
    1 km (0.6 mi) depth
    |
    11 km (7 mi) distance
    | EMSC | Details
  • 07 Feb 2017 07:39 UTC
    | M 3.3 |
    1 km (0.6 mi) depth
    |
    5 km (3 mi) distance
    | EMSC | Details
  • 07 Feb 2017 00:28 UTC
    | M 2.2 |
    3 km (1.9 mi) depth
    |
    4 km (3 mi) distance
    | EMSC | Details
  • 06 Feb 2017 16:09 UTC
    | M 2.4 |
    2 km (1.2 mi) depth
    |
    13 km (8 mi) distance
    | EMSC | Details
  • 04 Feb 2017 04:06 UTC
    | M 2.2 |
    0 km (0 mi) depth
    |
    12 km (8 mi) distance
    | EMSC | Details
  • 02 Feb 2017 23:09 UTC
    | M 2.1 |
    1.4 km (0.9 mi) depth
    |
    6 km (4 mi) distance
    | USGS | Details
  • 02 Feb 2017 03:21 UTC
    | M 2.4 |
    2 km (1.2 mi) depth
    |
    12 km (8 mi) distance
    | EMSC | Details
  • 01 Feb 2017 16:21 UTC
    | M 2.0 |
    2 km (1.2 mi) depth
    |
    12 km (7 mi) distance
    | EMSC | Details
  • 01 Feb 2017 14:19 UTC
    | M 2.3 |
    1.9 km (1.2 mi) depth
    |
    9 km (6 mi) distance
    | USGS | Details
  • 01 Feb 2017 07:29 UTC
    | M 2.1 |
    3 km (1.9 mi) depth
    |
    3 km (2 mi) distance
    | EMSC | Details
  • 01 Feb 2017 02:32 UTC
    | M 2.3 |
    3 km (1.9 mi) depth
    |
    3 km (2 mi) distance
    | EMSC | Details
  • Show all

Earlier earthquakes in the same area

Moderate mag. 5.1 earthquake - Sonoma County, 6.3 mi west of Cobb, Lake County, California, USA, on Wednesday, 14 December 2016 at 16:41 (GMT)
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