Moderate mag. 4.4 earthquake - North Pacific Ocean, 165 mi west of Eureka, Humboldt County, California, USA, on 2020-05-18 23:10:10 -08:00 -
This quake was likely an aftershock of the 5.5 quake North Pacific Ocean, 160 mi west of Eureka, Humboldt County, California, USA, 2020-05-17 23:02:34 -08:00, which had occurred 1 day 0 hours earlier.
Quake Data | Interactive map | User Reports | Earlier quakes in same area | Quakes in the US| California | California | Oregon
Moderate magnitude 4.4 earthquake at 10 km depth
19 May 07:43 UTC: First to report: USGS after 33 minutes.
Date & time: 19 May 2020 07:10:10 UTC -
Local time at epicenter: 2020-05-18 23:10:10 -08:00
Magnitude: 4.4
Depth: 10.0 km
Epicenter latitude / longitude: 40.8583°N / 127.3275°W
(North Pacific Ocean, California, United States)Nearest volcano: Escanaba Segment (20 km / 12 mi)
Nearby towns and cities:
260 km (162 mi) W of Ferndale (pop: 1,370) --> See nearby quakes!
266 km (165 mi) W of Eureka (Humboldt County) (pop: 27,000) --> See nearby quakes!
271 km (169 mi) W of McKinleyville (Humboldt County) (pop: 15,200) --> See nearby quakes!
273 km (170 mi) W of Arcata (Humboldt County) (pop: 17,800) --> See nearby quakes!
275 km (171 mi) W of Bayside (Humboldt County) (pop: 17,100) --> See nearby quakes!
376 km (234 mi) WSW of Grants Pass (Josephine County, Oregon) (pop: 37,100) --> See nearby quakes!
405 km (251 mi) WSW of Medford (Oregon) (pop: 79,800) --> See nearby quakes!
417 km (259 mi) W of Redding (pop: 91,600) --> See nearby quakes!
478 km (297 mi) NW of Santa Rosa (pop: 175,000) --> See nearby quakes!
544 km (338 mi) NW of San Francisco (pop: 864,800) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.5 x 1011 joules (69.8 megawatt hours, equivalent to 60 tons of TNT) 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 4.4 | 10 km | 260km W of Ferndale, California (USA) | USGS |
| M 4.7 | 10 km | Off Coast of N. California (USA) | GFZ |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
Earlier earthquakes in the same area
Click here to search our database for earlier earthquakes in the same area since 1900!
