Strong mag. 6.8 earthquake - 167km W of Ferndale, California on Thursday, 8 December 2016

Very strong mag. 6.5 earthquake - North Pacific Ocean, 107 mi west of Eureka, Humboldt County, California, USA, on Thursday, 8 Dec 2016 2:49 pm (GMT +0)

Very strong mag. 6.5 earthquake - North Pacific Ocean, 107 mi west of Eureka, Humboldt County, California, USA, on Thursday, 8 Dec 2016 2:49 pm (GMT +0)

Very strong magnitude 6.5 earthquake at 12 km depth

8 Dec 14:56 UTC: First to report: USGS after 6 minutes.
Dec 8 15:16: Magnitude recalculated from 6.8 to 6.5.
Hypocenter depth recalculated from 10.0 to 12.1 km.
Date & time: 8 Dec 2016 14:49:46 UTC
Local time at epicenter: Thursday, 8 Dec 2016 2:49 pm (GMT +0)
Magnitude: 6.5
Depth: 12.1 km
Epicenter latitude / longitude: 40.4753°N / 126.1528°W (North Pacific Ocean, California, United States)
Nearest volcano: Escanaba Segment (128 km / 80 mi)
Nearby towns and cities:
160 km (99 mi) W of Ferndale (pop: 1,370) --> See nearby quakes!
172 km (107 mi) WSW of Eureka (Humboldt County) (pop: 27,000) --> See nearby quakes!
180 km (112 mi) WSW of Arcata (Humboldt County) (pop: 17,800) --> See nearby quakes!
181 km (112 mi) WSW of McKinleyville (Humboldt County) (pop: 15,200) --> See nearby quakes!
181 km (112 mi) WSW of Bayside (Humboldt County) (pop: 17,100) --> See nearby quakes!
292 km (181 mi) WNW of Ukiah (pop: 15,900) --> See nearby quakes!
321 km (199 mi) SW of Grants Pass (Josephine County, Oregon) (pop: 37,100) --> See nearby quakes!
342 km (213 mi) SW of Medford (Oregon) (pop: 79,800) --> See nearby quakes!
372 km (231 mi) NW of Santa Rosa (pop: 175,000) --> See nearby quakes!
392 km (244 mi) NW of Petaluma (pop: 60,400) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 3.5 x 1014 joules (98.6 gigawatt hours, equivalent to 84802 tons of TNT or 5.3 atomic bombs!) 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
6.512 km- 160km W of Ferndale, CaliforniaUSGS
6.610 kmOff Coast of N. CaliforniaGFZ
6.510 kmOFF COAST OF NORTHERN CALIFORNIAEMSC

shake map
(shakemap: USGS)

User reports for this quake (26)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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180.4 km ENE of epicenter [Map] / Very weak shaking (MMI II) (reported through our app)
95503 (170.9 km ENE of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
Arcata (181.4 km ENE of epicenter) [Map] / Very weak shaking (MMI II) (reported through our app)
Lusby / not felt : Theres alot of activity everywhere.  
187.4 km ENE of epicenter [Map] / not felt : I was asleep on a very nice air bed so if there was shaking at my house the bed absorb it so that I did not feel it (reported through our app)  
salem, oregon (561.8 km NNE of epicenter) [Map] / not felt (reported through our app)
812 km NNE of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
443.3 km SE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
321.8 km E of epicenter [Map] / Very weak shaking (MMI II) (reported through our app)
Arcata (180.1 km ENE of epicenter) [Map] / Light shaking (MMI IV)
Santa Cruz (United States, 534 km SE of epicenter) : It lasted a bit longer than they usually do, concerning . (reported through EMSC)  
Santa Cruz (United States, 531 km SE of epicenter) : Im at UC Santa Cruz writing a paper and hid under my desk when I felt it. 6.5 is a little worrying, no? (reported through EMSC)  
San Francisco (United States, 446 km SE of epicenter) : Our building "swayed" back and forth for about 15-20 seconds, two times. (reported through EMSC)  
San Francisco (United States, 443 km SE of epicenter) : Mild rolling, felt at least 3 or 4 separate waves. (reported through EMSC)  
Arcata (United States, 189 km E of epicenter) : sitting on couch , felt a roll (reported through EMSC)  
Sonoma (United States, 406 km SE of epicenter) : In bed. A shudder. (reported through EMSC)  
Albion (United States, 252 km SE of epicenter) : Furniture rattled. (reported through EMSC)  
Klamath (United States, 215 km NE of epicenter) : I felt like I was woozy and looked at my Xmas tree, it was swaying back and forth.Very lightly like a small gust of wind. (reported through EMSC)  
San Mateo (United States, 468 km SE of epicenter) : Lasted about 1 min. Only noticed because I heard items rattling on shelves. (reported through EMSC)  
Daly City (United States, 450 km SE of epicenter) : Gentle shaking but lasted long (reported through EMSC)  
San Francisco (United States, 446 km SE of epicenter) : Curtains swaying slightly, about 10 seconds of rumbling,house creaked (reported through EMSC)  
Richmond (United States, 437 km SE of epicenter) : Very gentle roll at Richmond Point , CA (reported through EMSC)  
Lakeport (United States, 325 km SE of epicenter) : Slow roll, almost like dizzy spell (reported through EMSC)  
Grants Pass (United States, 323 km NE of epicenter) : I felt shaking slightly, dog looked up also. I saw my lamp has a crystal hanging with fish line. It was swinging. (reported through EMSC)  
Crescent City (United States, 219 km NE of epicenter) : Quick Rumble and a few seconds of shaking / swaying throughout the house. Creaking and obvious. (reported through EMSC)  
Arcata (United States, 184 km E of epicenter) : Quick shake, and a little rumble after. (reported through EMSC)  
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Aftershocks

More info
Recorded aftershocks, latest first (11 quakes):
  • 24 May 2017 16:39 UTC
    | M 2.8 |
    24.1 km (15 mi) depth
    |
    76 km (47 mi) distance
    | USGS | Details
  • 18 May 2017 03:20 UTC
    | M 4.0 |
    18.4 km (11.4 mi) depth
    |
    58 km (36 mi) distance
    | USGS | Details
  • 16 May 2017 19:22 UTC
    | M 2.6 |
    33.6 km (20.9 mi) depth
    |
    106 km (66 mi) distance
    | USGS | Details
  • 23 Mar 2017 20:37 UTC
    | M 3.2 |
    0 km (0 mi) depth
    |
    99 km (61 mi) distance
    | EMSC | Details
  • 07 Mar 2017 08:48 UTC
    | M 2.9 |
    4.5 km (2.8 mi) depth
    |
    80 km (50 mi) distance
    | USGS | Details
  • 28 Feb 2017 03:04 UTC
    | M 2.6 |
    1 km (0.6 mi) depth
    |
    104 km (65 mi) distance
    | EMSC | Details
  • 26 Feb 2017 16:27 UTC
    | M 2.8 |
    19 km (11.8 mi) depth
    |
    106 km (66 mi) distance
    | EMSC | Details
  • 25 Jan 2017 20:39 UTC
    | M 2.7 |
    0 km (0 mi) depth
    |
    92 km (57 mi) distance
    | EMSC | Details
  • 15 Dec 2016 03:48 UTC
    | M 4.0 |
    10 km (6.2 mi) depth
    |
    89 km (56 mi) distance
    | GFZ | Details
  • 09 Dec 2016 12:14 UTC
    | M 2.9 |
    9.6 km (6 mi) depth
    |
    13 km (8 mi) distance
    | USGS | Details
  • 08 Dec 2016 16:32 UTC
    | M 4.7 |
    3.7 km (2.3 mi) depth
    |
    19 km (12 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

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