Ελαφρύς σεισμός μεγέθους 3.7 - 92 km νοτιοανατολικά από Sandpoint, Aleutians East, Αλάσκα, Ηνωμένες Πολιτείες, Τρίτη, 21 Δεκ 2021 16:50 (GMT -9) -
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Ελαφρύς σεισμός μεγέθους 3.7 σε βάθος 20 χλμ
22 Dec 02:07 UTC: Πρώτα να αναφέρει: USGS after 17 λεπτά.
Update Wed, 22 Dec 2021, 02:12
Small 3.7 quake hits near Sandpoint, Aleutians East, Alaska, USA3.7 quake 21 Dec 4:50 pm (GMT -9)
An earthquake of magnitude 3.7 occurred only 22 minutes ago 57 miles southeast of Sandpoint, Alaska, United States, the United States Geological Survey reported.
The quake hit at a shallow depth of 12 miles beneath the epicenter near Sandpoint, Aleutians East, Alaska, USA, in the afternoon on Tuesday, December 21st, 2021, at 4:50 pm local time. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 3.7 earthquake as well.
According to preliminary calculations, we do not expect that the quake was felt by many people and did not cause any damage. In Sandpoint (pop. 1,100, 57 miles away), the quake was probably not felt.
The quake hit at a shallow depth of 12 miles beneath the epicenter near Sandpoint, Aleutians East, Alaska, USA, in the afternoon on Tuesday, December 21st, 2021, at 4:50 pm local time. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 3.7 earthquake as well.
According to preliminary calculations, we do not expect that the quake was felt by many people and did not cause any damage. In Sandpoint (pop. 1,100, 57 miles away), the quake was probably not felt.
Earthquake data
Λεπτομέρειες σεισμού
| Ημερομηνία και ώρα | 22 Dec 2021 01:50:30 UTC - |
| Τοπική ώρα στο επίκεντρο | Τρί, 21 Δεκ 2021 16:50 (GMT -9) |
| Status | Επιβεβαιωμένος |
| Μέγεθος | 3.7 |
| Βάθος | 19.5 km |
| Επίκεντρο γεωγραφικό πλάτος / γεωγραφικό μήκος | 54.6397°N / 159.7294°W  (Gulf of Alaska, Αλάσκα, Ηνωμένες Πολιτείες) |
| Antipode | 54.64°S / 20.271°E |
| Ένταση δονήσεων | Ασθενής κοντά στο επίκεντρο |
| Αισθητός | 0 αναφορές |
| Κύρια πηγή δεδομένων | USGS (United States Geological Survey) |
| Πλησιέστερα ηφαίστειο | Stepovak Bay 2 (143 km / 89 mi) |
| Κοντινά μέρη | 92 km (57 mi) ΝΑ of Sandpoint (pop: 1,060) | Στον χάρτη | Σεισμοί κοντά 146 km (91 mi) ΝΔ of Perryville (pop: 113) | Στον χάρτη | Σεισμοί κοντά 172 km (107 mi) ΝΑ of King Cove (pop: 1,010) | Στον χάρτη | Σεισμοί κοντά 178 km (111 mi) ΝΑ of Nelson Lagoon (pop: 52) | Στον χάρτη | Σεισμοί κοντά 190 km (118 mi) ΝΔ of Chignik Lake (pop: 73) | Στον χάρτη | Σεισμοί κοντά 200 km (125 mi) ΝΔ of Chignik Lagoon (pop: 78) | Στον χάρτη | Σεισμοί κοντά 201 km (125 mi) ΝΑ of Cold Bay (pop: 123) | Στον χάρτη | Σεισμοί κοντά |
| Ο καιρός στο επίκεντρο την ώρα του σεισμού | Overcast Clouds  4.6°C (40 F), humidity: 80%, wind: 6 m/s (12 kts) from SSW |
| Εκτιμώμενη εκλυόμενη σεισμική ενέργεια | 2.2 x 1010 joules (6.22 megawatt hours, ισοδυναμεί με 5.35 τόνους TNT) | about seismic energy |
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. | Βάθος | Τοποθεσία | Πηγή |
| 3.7 | 20 km | 91 Km SSE of Sand Point, Alaska | USGS |
| 3.7 | 20 km | South of Alaska | RaspberryShake |
| 3.7 | 19 km | SOUTH OF ALASKA | EMSC |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Earlier earthquakes in the same area
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