Light mag. 3.5 earthquake - North Pacific Ocean, 80 mi west of Eureka, Humboldt County, California, USA, on Wednesday, Jun 29, 2022 at 6:08 am (GMT -8) -

Light mag. 3.5 earthquake - North Pacific Ocean, 80 mi west of Eureka, Humboldt County, California, USA, on Wednesday, Jun 29, 2022 at 6:08 am (GMT -8) Light mag. 3.5 earthquake - North Pacific Ocean, 80 mi west of Eureka, Humboldt County, California, USA, on Wednesday, Jun 29, 2022 at 6:08 am (GMT -8)

Light magnitude 3.5 earthquake at 10 km depth

29 Jun 14:11 UTC: First to report: USGS after 3 minutes.
29 Jun 16:40: Magnitude recalculated from 3.8 to 3.5. Hypocenter depth recalculated from 2.2 to 9.6 km (from 1.4 to 6 mi). Epicenter location corrected by 15 km (9.2 mi) towards WSW.

Earthquake details

Date & timeJun 29, 2022 14:08:04 UTC -
Local time at epicenterWednesday, Jun 29, 2022 at 6:08 am (GMT -8)
StatusConfirmed
Magnitude3.5
Depth9.6 km
Epicenter latitude / longitude40.3665°N / 125.58133°W (North Pacific Ocean, California, United States)
Antipode40.367°S / 54.419°E
Shaking intensityVery weak shaking
Felt1 report
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoEscanaba Segment (176 km / 109 mi)
Nearby towns and cities114 km (71 mi) WSW of Ferndale (pop: 1,370) | Show on map | Quakes nearby
123 km (77 mi) WSW of Fortuna (Humboldt County) (pop: 12,000) | Show on map | Quakes nearby
126 km (78 mi) W of Rio Dell (pop: 3,390) | Show on map | Quakes nearby
129 km (80 mi) WSW of Eureka (Humboldt County) (pop: 27,000) | Show on map | Quakes nearby
138 km (86 mi) WSW of Arcata (Humboldt County) (pop: 17,800) | Show on map | Quakes nearby
139 km (86 mi) WSW of Bayside (Humboldt County) (pop: 17,100) | Show on map | Quakes nearby
141 km (87 mi) WSW of McKinleyville (Humboldt County) (pop: 15,200) | Show on map | Quakes nearby
183 km (114 mi) NW of Fort Bragg (Mendocino County) (pop: 7,290) | Show on map | Quakes nearby
Weather at epicenter at time of quakeBroken Clouds 13.8°C (57 F), humidity: 85%, wind: 12 m/s (23 kts) from N
Estimated seismic energy released1.1 x 1010 joules (3.12 megawatt hours, equivalent to 2.68 tons of TNT) | about seismic energy
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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.
Mag.DepthLocationSource
3.59.6 km96km W of Petrolia, CAUSGS
3.510 kmOFFSHORE NORTHERN CALIFORNIAEMSC
3.59.6 kmOff Coast of N. CaliforniaRaspberryShake

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Translate
Knightsen, Contra Costa, California (427.7 km SE of epicenter) [Map] / Very weak shaking (MMI II) / 2-5 s
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