Get our newsletter!
Check out our volcano tours on VolcanoAdventures.com!
Volcanoes & Earthquakes - new app for Android
Départs garantis:
8-16 mai 2021: Montagnes de Feu - du Stromboli à l'Etna - Eoliennes + Etna
: Places libres / : Départ garanti / : Quelques places disponibles / : Groupe fermé
Interactive map of latest earthquakes and active volcanoes in the world

Light mag. 4.3 earthquake - 57 Km SW of Skwentna, Alaska (USA) on Friday, 11 September 2020

Light mag. 4.3 earthquake  - 57 Km SW of Skwentna, Alaska (USA) on Friday, 11 September 2020
11 Sep 14:14 UTC: Premier à signaler: USGS après 16 minutes.
11 Sep 14:39: Magnitude recalculée de 4.6 à 4.4. Profondeur recalculée de 123.4 à 105.4 km (de 77 à 65 mi). Emplacement de l'épicentre corrigé de 2.6 km (1.6 mi) au NO.
11 Sep 14:50: Magnitude recalculée de 4.4 à 4.3. Profondeur recalculée de 105.4 à 120.3 km (de 65 à 75 mi). Emplacement de l'épicentre corrigé de 2 km (1.3 mi) au SE.
Date & time: Friday, 11 September 2020 13:58 UTC
Magnitude: 4.3
Depth: 120.3 km
Epicenter latitude / longitude: 61.6301°N / 152.1864°W (Alaska, États-Unis)
Nearest volcano: Hayes (13 km / 8 mi)
Nearby towns and cities:
84 km NW de Tyonek (pop: 200)
114 km W de Willow (pop: 2,100)
115 km NW de Nikiski (pop: 4,500)
130 km NW de Anchorage (pop: 298,700)
138 km W de Knik-Fairview (pop: 14,900)
143 km NW de Eagle River (pop: 24,800)
Primary data source: USGS
Estimated released energy: 1.8 x 1011 joules (49.4 megawatt hours, equivalent to 42.5 tons of TNT) [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.
HeureMag. / DepthLocationSource
Fri, 11 Sep 13:58 UTCM 4.3 / 120.3 km57 Km SW of Skwentna, Alaska (USA)USGS
Fri, 11 Sep 13:58 UTCM 4.6 / 123 kmSouthern Alaska (USA)EMSC

User reports for this quake (23)

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!
Chickaloon AK at home (184.8 km E of epicenter) [Map] / Light shaking (MMI IV) / 5-10 s : Felt at 5:59am. Easily identified as a quake. Cabin rocked side to side. Dog sat up, looked around. Lasted about 10 seconds. (reported through our app)
Palmer, alaska (159.9 km E of epicenter) [Map] / Moderate shaking (MMI V) : Woke me up, quick hard shake.
145.1 km E of epicenter [Map] / Very weak shaking (MMI II) (reported through our app)
134.4 km ESE of epicenter [Map] / Light shaking (MMI IV) : Quick jolt followed by light shaking for a moment. Woke me up. (reported through our app)
154.3 km E of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
Anchorage (131.8 km ESE of epicenter) [Map] / Very weak shaking (MMI II) / very short (reported through our app)
132 km ESE of epicenter [Map] / Light shaking (MMI IV) / very short
Palmer, alaska (159.9 km E of epicenter) [Map] / Moderate shaking (MMI V) : Woke me up, quick hard shake.
132.4 km ESE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
Mackey Lake, Soldotna, Ak / Very weak shaking (MMI II) / horizontal (sideways) swinging / 2-5 s : Was in bed. Heard telltale creak of building on upper floor then very weak shaking lasting 2-3 seconds before fading out. Probably wouldnt have noticed it downstairs or if up and moving around.
Anchorage, ak / Weak shaking (MMI III) / 1-2 s
Reka circle, Anchorage / Very weak shaking (MMI II) / single lateral shake / 2-5 s
Anchorage, ak / Weak shaking (MMI III) / 1-2 s
Palmer (United States, 163 km E of epicenter) : Woke us up and felt the slight shaking for about 2 - 4 seconds...no damage (reported through EMSC)
Eagle River (United States, 143 km E of epicenter) : Felt it fairly strong in eagle river. Didn't last too long though. Definitely had me alert (reported through EMSC)
Knik-Fairview (United States of America, 138 km E of epicenter) : Nope, didn't feel it, slept through it..... so did the dogs (reported through EMSC)
Gateway (United States, 156 km E of epicenter) : Woke me from a deep sleep. Fast and strong feeling (reported through EMSC)
Lakes (United States, 152 km E of epicenter) : 5 to 10 second slight tremor (reported through EMSC)
Meadow Lakes (United States, 137 km E of epicenter) : Gentle shake of the house (reported through EMSC)
Anchorage (United States of America, 132 km E of epicenter) : Short jolt followed by light trembling (reported through EMSC)
Anchorage (United States, 130 km E of epicenter) : First I thought it was my bird that sleep with me was moving around and then I knew it was a earthquake. It was very faint. (reported through EMSC)
Anchorage (United States, 130 km E of epicenter) : Had my clipboards swinging at work! (reported through EMSC)
Nikiski (United States, 114 km SE of epicenter) : Shook my chair pretty good at 6am. 5 or 6 good bumps. (reported through EMSC)

Earlier earthquakes in the same area since 1900

Light mag. 4.3 earthquake - 57 Km SW of Skwentna, Alaska (USA) on Friday, 11 September 2020

Map of earlier quakes

 

Plus sur 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!
Copyright: VolcanoDiscovery ou autres sources indiquées.
Utilisation des documents: Les textes, les images et les vidéos de ce site internet sont protégées par copyright. Toute reproduction et tout usage sans accord préalable ne sont pas autorisés. Si vous désirez acquérir pour certains documents (photos, vidéos, textes ou autres) le droit de reproduction, d'édition et, plus généralement, de toute utilisation destinée à un usage public, qu'elle soit commerciale ou pas, vous êtes priés de nous contacter.