Αδύναμος σεισμός μεγέθους 3.3 - Matanuska-Susitna Parish, 22 km βόρεια από Ανκορέιτζ, Anchorage, Αλάσκα, Ηνωμένες Πολιτείες, Τετάρτη, 21 Ιου 2021 07:12 (GMT -8) -

Αδύναμος σεισμός μεγέθους 3.3 - Matanuska-Susitna Parish, 22 km βόρεια από Ανκορέιτζ, Anchorage, Αλάσκα, Ηνωμένες Πολιτείες, Τετάρτη, 21 Ιου 2021 07:12 (GMT -8)

Αδύναμος σεισμός μεγέθους 3.3 at 37 km depth

21 Jul 15:15 UTC: Πρώτα να αναφέρει: USGS after 3 minutes.
21 Jul 15:17: Hypocenter depth recalculated from 35.6 to 35.0 km (from 22 to 22 mi). Epicenter location corrected by 0.8 km (0.5 mi) towards S.
21 Jul 15:29: Magnitude recalculated from 3.5 to 3.3. Hypocenter depth recalculated from 35.0 to 36.9 km (from 22 to 23 mi). Epicenter location corrected by 2.6 km (1.6 mi) towards NNE.
Update Wed, 21 Jul 2021, 15:27
Small magnitude 3.5 earthquake 12 miles northwest of Alaska City, Alaska, United States
3.5 quake 21 Jul 7:12 am (GMT -8)
3.5 quake 21 Jul 7:12 am (GMT -8)
Just 15 minutes ago, a 3.5-magnitude earthquake struck near Alaska City, Anchorage, Alaska, USA. The tremor was recorded in the morning on Wednesday 21 July 2021 at 7:12 am local time, at a moderately shallow depth of 22 miles below the surface.
The event was filed by the United States Geological Survey, the first seismological agency to report it.
Our monitoring service identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 3.5 as well.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Point MacKenzie (pop. 530) located 2 miles from the epicenter, Big Lake (pop. 3,400) 10 miles away, Alaska City (pop. 298,700) 12 miles away, Eagle River (pop. 24,800) 16 miles away, Eagle River (pop. 24,800) 16 miles away, Elmendorf Air Force Base (pop. 6,600) 16 miles away, Knik-Fairview (pop. 14,900) 16 miles away, Meadow Lakes (pop. 7,600) 22 miles away, and Wasilla (pop. 9,300) 23 miles away.

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Earthquake data

Ημερομηνία & time: 21 Jul 2021 15:12:15 UTC -
Τοπική ώρα στο επίκεντρο: Τετ, 21 Ιου 2021 07:12 (GMT -8)
Μέγεθος: 3.3
Βάθος: 36.9 km
Επίκεντρο γεωγραφικό πλάτος / γεωγραφικό μήκος: 61.4085°N / 150.0068°W (Matanuska-Susitna, Αλάσκα, Ηνωμένες Πολιτείες)
Antipode: 61.409°S / 29.993°E
Πλησιέστερα ηφαίστειο: Spurr (120 km / 75 mi)
Nearby towns and cities:
6 km (4 mi) ΒΔ of Point MacKenzie (pop: 529) --> Δείτε κοντινούς σεισμούς!
13 km (8 mi) ΝΔ of Big Lake (pop: 3,350) --> Δείτε κοντινούς σεισμούς!
22 km (14 mi) ΒΔ of Ανκορέιτζ (pop: 298,700) --> Δείτε κοντινούς σεισμούς!
25 km (15 mi) ΝΔ of Knik-Fairview (pop: 14,900) --> Δείτε κοντινούς σεισμούς!
25 km (16 mi) ΒΔ of Eagle River (pop: 24,800) --> Δείτε κοντινούς σεισμούς!
25 km (16 mi) ΒΔ of Eagle River (Anchorage) (pop: 24,800) --> Δείτε κοντινούς σεισμούς!
27 km (17 mi) ΝΔ of Houston (pop: 2,210) --> Δείτε κοντινούς σεισμούς!
36 km (22 mi) ΝΔ of Wasilla (pop: 9,280) --> Δείτε κοντινούς σεισμούς!
38 km (23 mi) Ν of Willow Creek (pop: 2,100) --> Δείτε κοντινούς σεισμούς!
45 km (28 mi) ΝΔ of Gateway (pop: 5,550) --> Δείτε κοντινούς σεισμούς!
Κύρια πηγή δεδομένων: USGS (United States Geological Survey)
Estimated released energy: 5.6 x 109 joules (1.56 megawatt hours, ισοδυναμεί με 1.34 τόνους TNT) | about seismic energy
Διαδραστικός χάρτης
[μικρότερα] [μεγαλύτερα]
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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.ΒάθοςΤοποθεσίαΠηγή
3.337 km3 Km NW of Point MacKenzie, AlaskaUSGS
3.337 kmSOUTHERN ALASKAEMSC

User reports for this quake (3)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Anchorage (28.6 km S of epicenter) [Map] / Very weak shaking (MMI II) / single lateral shake / very short : Very quick bump. Felt it but nothing shook in my house. (reported through our app)  
GIRDWOOD (69.4 km SE of epicenter) [Map] / Light shaking (MMI IV) / single vertical bump / 1-2 s (reported through our app)
2221 Muldoon Rd, Anchorage AK (27.4 km SSE of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / 2-5 s : Short, sharp jolt (reported through our app)  
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