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Minor mag. 3.4 earthquake - 6 Km E of Point MacKenzie, Alaska (USA) on Friday, 11 September 2020

Minor mag. 3.4 earthquake  - 6 Km E of Point MacKenzie, Alaska (USA) on Friday, 11 September 2020
11 Sep 21:45 UTC: First to report: USGS after 11 minutes.
11 Sep 21:48: Magnitude recalculated from 3.5 to 3.4. Hypocenter depth recalculated from 31.4 to 12.9 km (from 19.5 to 8 mi). Epicenter location corrected by 6.7 km (4.2 mi) towards WSW.
11 Sep 21:52: Hypocenter depth recalculated from 12.9 to 34.8 km (from 8 to 22 mi). Epicenter location corrected by 7.6 km (4.7 mi) towards E.
Date & time: Friday, 11 September 2020 21:34 UTC
Magnitude: 3.4
Depth: 34.8 km
Epicenter latitude / longitude: 61.3486°N / 149.8609°W (Alaska, United States)
Nearest volcano: Spurr (128 km / 80 mi)
Nearby towns and cities:
6 km (4 mi) E of Point MacKenzie (pop: 500)
14 km (9 mi) SW of Knik (pop: 300)
15 km (9 mi) N of Anchorage (pop: 298,700)
16 km (10 mi) W of Eagle River (pop: 24,800)
16 km (10 mi) NW of Elmendorf Air Force Base (pop: 6,600)
23 km (14 mi) SW of Knik-Fairview (pop: 14,900)
Primary data source: USGS
Estimated released energy: 7.9 x 109 joules (2.21 megawatt hours, equivalent to 1.9 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.
TimeMag. / DepthLocationSource
Fri, 11 Sep 21:34 UTCM 3.4 / 34.8 km6 Km E of Point MacKenzie, Alaska (USA)USGS
Fri, 11 Sep 21:34 UTCM 3.4 / 35 kmSouthern Alaska (USA)EMSC

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (modified Mercalli) scale.
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17.4 km SSE of epicenter [Map] / Very weak shaking (MMI II) / rattling, vibrating / very short : I thought my dog bumped the couch but he was by the table near the kitchen. | One user found this interesting. (reported through our app)
19 km SSE of epicenter [Map] / Moderate shaking (MMI V) : Felt like something rammed into out cubicles. Followed by gently small sway. (reported through our app)
59.2 km SE of epicenter [Map] / Weak shaking (MMI III) / rattling, vibrating / 5-10 s (reported through our app)
North part of Anchorage, on JBER. (20 km S of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Elmendorf AFB (11.7 km S of epicenter) [Map] / Light shaking (MMI IV) / vertical swinging (up and down) / 2-5 s (reported through our app)
Eagle River (15.9 km E of epicenter) [Map] / Very weak shaking (MMI II) / 2-5 s (reported through our app)
Biglake (22.7 km N of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / very short : One solid and loud jerk. (reported through our app)
21.7 km S of epicenter [Map] / Light shaking (MMI IV) / rattling, vibrating / 5-10 s : Felt stronger than it was! (reported through our app)
16.9 km S of epicenter [Map] / Very weak shaking (MMI II) / 2-5 s : 2 distinct jolts (reported through our app)
Peters Creek (22.4 km ENE of epicenter) [Map] / Very weak shaking (MMI II) : Mostly noise. Little if any motion. (reported through our app)
21.7 km S of epicenter [Map] / Very weak shaking (MMI II) / very short
14.9 km SSE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
NE Anchorage / Very weak shaking (MMI II) / single lateral shake / very short : Felt as if someone bumped the back of my chair.
Anchorage (United States, 15 km S of epicenter) : On the shitter at work. Made my deposit that much faster! Thanks mother nature! | One user found this interesting. (reported through EMSC)
Houston (United States, 31 km N of epicenter) : wasn't sure until I saw this (reported through EMSC)
Eagle River (United States, 16 km E of epicenter) : Eagle River, Alaska (reported through EMSC)
Anchorage (United States, 15 km S of epicenter) : A couple sharp shakes and rolls (reported through EMSC)
Anchorage (United States, 15 km S of epicenter) : Quick baby jolt. (reported through EMSC)
Eagle River (United States, 16 km E of epicenter) : A quick jolt to the house (reported through EMSC)
Eagle River (United States, 16 km E of epicenter) : Quick sound like a gust of wind (reported through EMSC)
Eagle River (United States, 16 km E of epicenter) : Quick and jerky. Scared my kids (reported through EMSC)
Anchorage (United States, 15 km S of epicenter) : Vibrated house and windows (reported through EMSC)
Anchorage (United States, 15 km S of epicenter) : Brief shake felt in south Anchorage. (reported through EMSC)
Anchorage (United States, 15 km S of epicenter) : Just a little shake. We have had a lot lately. (reported through EMSC)
Anchorage (United States, 15 km S of epicenter) : House shock (reported through EMSC)

Significant earthquakes in the same area since 1900

Minor mag. 3.4 earthquake - 6 Km E of Point MacKenzie, Alaska (USA) on Friday, 11 September 2020

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