Contact | RSS | EN | DE | EL | ES | FR | IT | RU

Strong mag. 5.8 earthquake - North Pacific Ocean, 56 mi southwest of Eureka, Humboldt County, California, USA, on 2020-03-08 18:59:08 -08:00

Strong mag. 5.8 earthquake - North Pacific Ocean, 56 mi southwest of Eureka, Humboldt County, California, USA, on 2020-03-08 18:59:08 -08:00 Strong mag. 5.8 earthquake - North Pacific Ocean, 56 mi southwest of Eureka, Humboldt County, California, USA, on 2020-03-08 18:59:08 -08:00

Strong magnitude 5.8 earthquake at 3 km depth

9 Mar 03:03 UTC: First to report: USGS after 5 minutes.
Mar 9 03:06: Magnitude recalculated from 5.6 to 5.9.
Mar 9 04:00: Magnitude recalculated from 5.9 to 5.8.
Hypocenter depth recalculated from 2.2 to 8.0 km.
Hypocenter depth recalculated from 8.0 to 3.2 km.

Earthquake details

Date & timeMar 9, 2020 02:59:08 UTC
Local time at epicenter2020-03-08 18:59:08 -08:00
StatusConfirmed
Magnitude5.8
Depth3.2 km
Epicenter latitude / longitude40.39167°N / 125.09367°W (North Pacific Ocean, United States)
Antipode40.392°S / 54.906°E
Shaking intensityModerate shaking
Felt35 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoEscanaba Segment (197 km / 122 mi)
Nearby towns and cities73 km (45 mi) WSW of Ferndale (pop: 1,370) | Show on map | Quakes nearby
82 km (51 mi) WSW of Fortuna (Humboldt County) (pop: 12,000) | Show on map | Quakes nearby
84 km (52 mi) W of Rio Dell (pop: 3,390) | Show on map | Quakes nearby
91 km (56 mi) WSW of Eureka (Humboldt County) (pop: 27,000) | Show on map | Quakes nearby
100 km (62 mi) WSW of Arcata (Humboldt County) (pop: 17,800) | Show on map | Quakes nearby
100 km (62 mi) WSW of Bayside (Humboldt County) (pop: 17,100) | Show on map | Quakes nearby
104 km (65 mi) SW of McKinleyville (Humboldt County) (pop: 15,200) | Show on map | Quakes nearby
152 km (95 mi) NW of Fort Bragg (Mendocino County) (pop: 7,290) | Show on map | Quakes nearby
169 km (105 mi) SSW of Crescent City (Del Norte County) (pop: 6,770) | Show on map | Quakes nearby
212 km (132 mi) NW of Ukiah (pop: 15,900) | Show on map | Quakes nearby
Estimated seismic energy released3.2 x 1013 joules (8.78 gigawatt hours, equivalent to 7558 tons of TNT or 0.5 atomic bombs!) | about seismic energy
Show interactive Map
[smaller] [bigger]

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.
Mag.DepthLocationSource
5.83.2 km69km W of Petrolia, CA (USA)USGS
5.810 kmOffshore Northern California (USA)EMSC
5.810 kmNear Coast of N. California (USA)GFZ
5.613 kmNear Coast of N. California (USA)GeoAu

Seismograms

Seismic station: Columbia College, Columbia, CA, USA (CMB/BK network) | Distance from quake: 483 km / 300 mi | Show on map | Station Info
Seismic station Columbia College, Columbia, CA, USA: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
Show more

User reports for this quake (76)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Contribute:
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!
Translate
Chatsworth / not felt : Not really a shake. More like the house just had an adjustment. Like taking a bigger step than expected.  
Sacramento / not felt : I was surprised we did not feel it. The dogs were acting very needy and was worried that it might be due to quake. Appears it was.  
Rancho Cucamonga, San Bernardino, California (967 km SE of epicenter) [Map] / not felt (reported through our app)
Ukiah, CA / not felt : I didn't feel it, but my dog and the neighbor's dogs all did. It woke him out of a deep sleep annd all the dogs were barking.  
Redding, CA (230.1 km E of epicenter) [Map] / not felt : I did not feel quake, however one dog and two cats picked that time +/- two minutes on either side of quake time, to become agitated, grouping together, then circling and staying right by my feet in kitchen area. We four kept commenting on how odd they we (reported through our app)  
Manama / Very weak shaking (MMI II) : Felt slight skaking  
1184 N. Main St 328, Fort Bragg, CA. 95437 (151.3 km SE of epicenter) [Map] / Weak shaking (MMI III) : Knew Immediately What It Was...The Slight Jolt Lasted for approx. 5 sec, With a Back and Forth ( several times ) West to East...  
Manama bahrain / Weak shaking (MMI III) : Felt shaking while sleeping  
Fort Bragg, Mendocino, California (159 km SE of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
Eureka CA / Light shaking (MMI IV) : Sudden jolk with Jell-O like shaking  
Northridge, Los Angeles, California (895.6 km SE of epicenter) [Map] / Strong shaking (MMI VI) (reported through our app)
Hanford ca. (656.1 km SE of epicenter) [Map] / not felt (reported through our app)
94949 / Light shaking (MMI IV)
Sebastopol / not felt : Did not feel  
Bahrain / Weak shaking (MMI III)
91304 (894.2 km SE of epicenter) [Map] / Light shaking (MMI IV) : Sounded like a loud deep gunshot. Kind of like a muffled shotgun blast. (reported through our app)  
San Fernando, Los Angeles, California (895.6 km SE of epicenter) [Map] / Very strong shaking (MMI VII) (reported through our app)
San Marcos California / not felt
Eureka, Humboldt, California (89.7 km ENE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Tacoma, Washington (785.3 km NNE of epicenter) [Map] / Very weak shaking (MMI II) (reported through our app)
Myers Flat (104.3 km E of epicenter) [Map] / Light shaking (MMI IV) : Light shaking building up to almost moderate shake, more rolling then most (reported through our app)  
Loleta ca (78.7 km ENE of epicenter) [Map] / Moderate shaking (MMI V)
mendocino CA / Moderate shaking (MMI V)
near Brooktrails, Mendocino, California (172.4 km SE of epicenter) [Map] / Light shaking (MMI IV) : Felt it in Willits California  
Fernley, NV (512 km E of epicenter) [Map] / not felt (reported through our app)
Fortuna ca / Moderate shaking (MMI V)
Barrow-in-Furness / not felt : Not felt  
Crescent City, Del Norte, California (175.1 km NNE of epicenter) [Map] / Very weak shaking (MMI II) (reported through our app)
Orchards, Clark, Washington (617.4 km NNE of epicenter) [Map] / not felt (reported through our app)
Arcata, ca / Light shaking (MMI IV)
Bahrain (12622.7 km N of epicenter) [Map] / Light shaking (MMI IV) : While laying on bed felt a shaking  
Show more
Show more

Aftershocks

[More info]

Recorded aftershocks, latest first (31 quakes)

Date and timeMag
Depth
LocationDetails
Apr 29, 2020 21:42
2 years ago
2.2

4.8 km
North Pacific Ocean, 66 mi SW of Eureka, Humboldt County, California, USAMore
Apr 25, 2020 00:31
2 years ago
3.5

28 km
North Pacific Ocean, 72 mi SW of Eureka, Humboldt County, California, USAMore
Apr 23, 2020 15:31
2 years ago
2.3

20 km
North Pacific Ocean, 27 mi SW of Fortuna, Humboldt County, California, USAMore
Apr 19, 2020 15:41
2 years ago
2.6

22 km
North Pacific Ocean, 25 mi SW of Fortuna, Humboldt County, California, USAMore
Apr 19, 2020 01:10
2 years ago
3.7

22 km
North Pacific Ocean, 71 mi SW of Eureka, Humboldt County, California, USAMore
Apr 18, 2020 23:34
2 years ago
2.7

0.2 km
North Pacific Ocean, 39 mi SW of Eureka, Humboldt County, California, USAMore
Apr 11, 2020 02:49
2 years ago
3.0

24 km
North Pacific Ocean, 58 mi W of Fortuna, Humboldt County, California, USAMore
Apr 6, 2020 08:26
2 years ago
2.3

21 km
North Pacific Ocean, 28 mi SW of Fortuna, Humboldt County, California, USAMore
Apr 3, 2020 06:23
2 years ago
2.5

2.1 km
North Pacific Ocean, 42 mi W of Ferndale, Humboldt County, California, USAMore
Apr 2, 2020 10:00
2 years ago
2.2

17 km
North Pacific Ocean, 31 mi W of Fortuna, Humboldt County, California, USAMore
Apr 2, 2020 06:14
2 years ago
3.0

21 km
North Pacific Ocean, 31 mi W of Fortuna, Humboldt County, California, USAMore
Mar 26, 2020 00:58
3 years ago
2.7

6.1 km
North Pacific Ocean, 42 mi W of Fortuna, Humboldt County, California, USAMore
Mar 23, 2020 10:07
3 years ago
3.5

16 km
North Pacific Ocean, 34 mi SW of Fortuna, Humboldt County, California, USAMore
Mar 22, 2020 16:27
3 years ago - felt
4.8

12 km
North Pacific Ocean, 43 mi SW of Eureka, Humboldt County, California, USAMore
Mar 19, 2020 05:35
3 years ago
2.3

21 km
North Pacific Ocean, 30 mi SW of Fortuna, Humboldt County, California, USAMore
Mar 18, 2020 23:17
3 years ago
2.3

21 km
North Pacific Ocean, 26 mi SW of Fortuna, Humboldt County, California, USAMore
Mar 17, 2020 13:06
3 years ago
2.4

5.4 km
North Pacific Ocean, 45 mi W of Ferndale, Humboldt County, California, USAMore
Mar 10, 2020 13:49
3 years ago
2.9

0.2 km
North Pacific Ocean, 43 mi W of Ferndale, Humboldt County, California, USAMore
Mar 10, 2020 13:34
3 years ago
2.6

0 km
North Pacific Ocean, 44 mi W of Ferndale, Humboldt County, California, USAMore
Mar 10, 2020 07:22
3 years ago
2.9

14 km
North Pacific Ocean, 57 mi W of Eureka, Humboldt County, California, USAMore
Mar 9, 2020 13:56
3 years ago
3.3

1.9 km
North Pacific Ocean, 59 mi SW of Eureka, Humboldt County, California, USAMore
Mar 9, 2020 11:14
3 years ago
3.6

24 km
North Pacific Ocean, 53 mi W of Eureka, Humboldt County, California, USAMore
Mar 9, 2020 11:04
3 years ago
3.7

5.6 km
North Pacific Ocean, 47 mi W of Eureka, Humboldt County, California, USAMore
Mar 9, 2020 07:24
3 years ago
2.5

0.3 km
North Pacific Ocean, 48 mi SW of Eureka, Humboldt County, California, USAMore
Mar 9, 2020 06:53
3 years ago
2.4

5.5 km
North Pacific Ocean, 45 mi W of Ferndale, Humboldt County, California, USAMore
Mar 9, 2020 06:32
3 years ago - felt
4.9

7.2 km
North Pacific Ocean, 60 mi SW of Eureka, Humboldt County, California, USAMore
Mar 9, 2020 06:29
3 years ago
2.4

16 km
North Pacific Ocean, 39 mi SW of Fortuna, Humboldt County, California, USAMore
Mar 9, 2020 06:12
3 years ago
2.5

2.3 km
North Pacific Ocean, 45 mi W of Ferndale, Humboldt County, California, USAMore
Mar 9, 2020 05:56
3 years ago
2.4

4.6 km
North Pacific Ocean, 44 mi W of Ferndale, Humboldt County, California, USAMore
Mar 9, 2020 05:01
3 years ago
2.9

0.3 km
North Pacific Ocean, 41 mi W of Ferndale, Humboldt County, California, USAMore
Mar 9, 2020 04:10
3 years ago
2.5

0.2 km
North Pacific Ocean, 45 mi SW of Eureka, Humboldt County, California, USAMore

Earlier earthquakes in the same area

Try our free app!
Volcanoes & Earthquakes - new app for Android
Android | iOS version

Support us - Help us upgrade our services!

We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:
  • Improved multilanguage support
  • Tsunami alerts
  • Faster responsiveness
Thanks to your past donations, these features have been added recently:
  • Design upgrade
  • Detailed quake stats
  • Additional seismic data sources
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Sources: VolcanoDiscovery / VolcanoAdventures and other sources as noted.
Use of material: Most text and images on our websites are owned by us. Re-use is generally not permitted without authorization. Contact us for licensing rights.
Volcanoes & Earthquakes
VolcanoDiscovery Home
Volcanoes | Earthquakes | Photos | Volcano News | App
Adventure & Study Travel
Tours to Volcanoes and Volcanic Areas: walking tours, photo tours, study tours
Tours & Dates | FAQ | About us
Get our newsletter!
Company info
Contact | Legal info | Terms & conditions
Follow us
Follow us on facebook Follow us on Instagram Follow us on Twitter Visit our Youtube channel
EN | DE | EL | ES | FR | IT | RU
VolcanoDiscovery GmbH, Germany, Reg. nr.: HRB 103744, EU Tax Id: DE 310 395 322 owned and created by
Dr. Tom Pfeiffer, volcanologist, volcano photographer, tour organizer member of
IAVCEI
Volcanological Society
Ecotourism Greece
Insured by R+V
VolcanoDiscovery © 2004- All Rights Reserved | Privacy - cookie settings