Quake status: unconfirmed
This record is considered not to be from an actual earthquake, because there is no officially confirmed quake that matches the user reports we received of the reported event closely enough.
In most cases, this event likely reflects something else that caused shaking, such as an explosion (typical for mining areas), a sonic boom, traffic, weather, or some other human or natural cause.
The initial report is below:

Unconfirmed quake reported: Alaska and Aleutian Islands, USA, 27 February 2021 19:00 GMT -

Our monitoring service AllQuakes received reports of an earthquake in or near Alaska and Aleutian Islands, USA at around 19:00 GMT. Unless confirmed by at least one national or international seismological agency, its status remains unconfirmed.
Unconfirmed quake reported: Alaska and Aleutian Islands, USA, 27 February 2021 19:00 GMT
27 Feb 19:02 UTC: First to report: VolcanoDiscovery after 2 minutes.
Date & time: 27 Feb 2021 19:00:01 UTC -
Magnitude: unknown
Depth: 10.0 km
Epicenter latitude / longitude: 55°N / 169°W (United States)
Nearest volcano: Bogoslof (135 km / 84 mi)
Primary data source: VolcanoDiscovery
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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.

User reports for this quake (15)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Anchorage, south side off Johns Rd (1307 km NE of epicenter) [Map] / Moderate shaking (MMI V) / both vertical and horizontal swinging : Condo that was really rolling. But only on item fell off a shelf. House birds were extremely scared and flying though clipped.  
1308.7 km NE of epicenter [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 2-5 s
Wasilla (1362.2 km NE of epicenter) [Map] / Moderate shaking (MMI V) / rattling, vibrating / 15-20 s
Wasilla Alaska (1347 km NE of epicenter) [Map] / Moderate shaking (MMI V) / rattling, vibrating / 10-15 s : I live here in Wasilla alaska. We felt it.  
1349.8 km NE of epicenter [Map] / Light shaking (MMI IV) / 5-10 s
Big Lake / Moderate shaking (MMI V)
Anchorage / Light shaking (MMI IV) : It was strong jolt with shaking afterward. Things fell from shelves.  
Eagle River Alaska / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Eagle River Alaska / Strong shaking (MMI VI) / horizontal (sideways) swinging / 20-30 s : N/A  
Anchorage / Light shaking (MMI IV) / rattling, vibrating / 5-10 s
5810 lake Otis pwky Anchorage / Strong shaking (MMI VI)
Cooper Landing / Very weak shaking (MMI II) / single lateral shake / 1-2 s : I felt the earthquake itt was a small jolt that lasted only a couple seconds.  
Anchorage / Light shaking (MMI IV)
anchorage / Moderate shaking (MMI V) / 10-15 s
Wasilla alaska / Moderate shaking (MMI V)
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