Get our newsletter!
Check out our volcano tours on VolcanoAdventures.com!
Volcanoes & Earthquakes - new app for Android
Guaranteed tours
8-16 May 2021: From Stromboli to Etna - Sicila and Eolian Islands (Italy)
: spaces available / : guaranteed / : few spaces left / : booked out
Interactive map of latest earthquakes and active volcanoes in the world

Moderate mag. 5.9 earthquake - 68 Km SE of Sand Point, Alaska, USA on Tuesday, 6 October 2020

This quake was likely an aftershock of the 7.8 quake: 105 km SSE of Perryville, Alaska (USA), 22 Jul 2020 06:12, which had occurred 11 weeks earlier.
Moderate mag. 5.9 earthquake  - 68 Km SE of Sand Point, Alaska, USA on Tuesday, 6 October 2020
6 Oct 06:00 UTC: First to report: USGS after 5 minutes.
6 Oct 06:08: Magnitude recalculated from 5.8 to 5.6. Hypocenter depth recalculated from 21.0 to 21.4 km (from 13 to 13.3 mi). Epicenter location corrected by 13.7 km (8.5 mi) towards S.
6 Oct 06:13: Magnitude recalculated from 5.6 to 5.9. Hypocenter depth recalculated from 21.4 to 30.4 km (from 13.3 to 18.9 mi). Epicenter location corrected by 1.9 km (1.2 mi) towards S.
Date & time: Tuesday, 6 October 2020 05:54 UTC
Local time at epicenter: 5 Oct 9:54 pm (GMT -8)
Magnitude: 5.9
Depth: 30.4 km
Epicenter latitude / longitude: 54.8444°N / 159.8598°W (Alaska, United States)
Nearest volcano: Stepovak Bay 2 (104 km / 65 mi)
Nearby towns and cities:
68 km (42 mi) SE of Sand Point (pop: 1,100)
127 km (79 mi) SW of Perryville (pop: 100)
154 km (96 mi) SE of Nelson Lagoon (pop: 100)
159 km (99 mi) E of King Cove (pop: 1000)
171 km (107 mi) SW of Chignik Lake (pop: 100)
186 km (116 mi) E of Cold Bay (pop: 100)
Weather at epicenter at time of quake:
Light Rain 8°C (46 F), humidity: 75%, wind: 9 m/s (17 kts) from NNW
Primary data source: USGS
Estimated released energy: 4.5 x 1013 joules (12.4 gigawatt hours, equivalent to 10676 tons of TNT or 0.7 atomic bombs!) [learn more]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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.
TimeMag. / DepthLocationSource
5 Oct 9:54 pm (GMT -8) (6 Oct 05:54:50 UTC)M 5.9 / 30.4 km68 Km SE of Sand Point, Alaska, USAUSGS
Tue, 6 Oct 05:54 UTCM 5.9 / 30 kmSouth of Alaska, USAGFZ
Tue, 6 Oct 05:54 UTCM 5.9 / 30 kmSouth Of Alaska, USAEMSC
Tue, 6 Oct 05:54 UTCM 5.9 / 35.9 kmSouth of Alaska, USAGeoAu
Tue, 6 Oct 05:54 UTCM 5.9 / 10 kmAlaska Peninsula, USABMKG

User reports for this quake (31)

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!
3939.6 km ESE of epicenter [Map] / Very weak shaking (MMI II) / 1-2 s : A very shallow jolt. I thought was somebody climbing stairs but wasn't. Precise time so I assumed was an aftershock.
Rancho Cucamonga, California, USA (3974.5 km ESE of epicenter) [Map] / not felt : Not felt
Riverside, CA (3992.9 km ESE of epicenter) [Map] / not felt
Grass Valley, CA (3357 km ESE of epicenter) [Map] / not felt
2714.9 km E of epicenter [Map] / not felt
Tucson az 85712 (9.4 km NE of epicenter) [Map] / not felt
Kodiak (564 km NE of epicenter) [Map] / not felt
3887.9 km E of epicenter [Map] / not felt : In bed sleeping 17 hours ago - did not feel anything.
Anchor point, AK (743.2 km NE of epicenter) [Map] / not felt : I didn't feel a thing (reported through our app)
486 km NE of epicenter [Map] / not felt (reported through our app)
184.2 km NNE of epicenter [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 10-15 s (reported through our app)
126.5 km NNE of epicenter [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 10-15 s (reported through our app)
29512 Peoria Road, Halsey OR 97348 / not felt : Tamara Gabrielsen: Halsey, Oregon address. Physically located on the bank of the Willamette river, in the village of Peoria.
Fairhope / not felt : About 2 years ago my windows shook on and off. Reported the activity to USGS. My husband also experienced it. Are there any earthquake monitors this far south around Mobile Bay, eastern shore?
Salem, Oregon / not felt
Anchorage, Alaska ship creek / Light shaking (MMI IV) / single lateral shake / 10-15 s : I was laying in bed and the bed started shaking my first earthquake It was like around 1am or so
98387 zipcode / not felt
Big Bear Lake,California. 92315 / Light shaking (MMI IV) / single vertical bump / very short : Know worry
Southern California / not felt : Didn't know there was an earthquake. If it was here, I'd know.
Ritzville / not felt
Baldwin Park,CA / not felt
Phoenix / not felt : Arizona
Sacramento / not felt
King Cove / Moderate shaking (MMI V)
Fairfield, Texas / not felt
Franklin, NC / not felt
Eugene, OR / not felt
Seattle / not felt
eugene, or / not felt
Fairhope / not felt
Sand Point / Moderate shaking (MMI V)

Earlier earthquakes in the same area since 1900

Moderate mag. 5.9 earthquake - 68 Km SE of Sand Point, Alaska, USA on Tuesday, 6 October 2020

Map of earlier quakes

 

More on VolcanoDiscovery

 
Why is there advertising on this site?

Support us!

Maintaining the website and our free apps is a time- and cost-intensive effort.
If you find the information useful and would like to support our team to develop further features and get the upgraded ad-free version, consider making a donation (PayPal or Online cc payment).
Planned features:
  • Weather reports
  • Tsunami alerts
  • Design upgrades
Thanks to your past donations, these features have been added recently:
  • Earthquake archive back to 1900
  • Additional data sources
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us.