Earthquake status: highly uncertain
It is unlikely that this event was caused by a natural earthquake as it has not been confirmed by official seismic data. In most cases, it was another earthquake-like event of natural or artificial origin (eg, mine activity, eruptions, sonic booms, thunder, etc.).
Initial report below:
Although our monitoring service initially detected network activity typical of an earthquake, there was no confirmation from any national or international seismological agency. For this reason, it is highly unlikely that it was caused by an earthquake.
23. August 02:02 UTC: First message: VolcanoDiscovery two minutes later.
I felt it!
I didn’t feel it.
Date and time: August 23, 2021 01:59:46 UTC –
Local time in the epicenter: Sunday August 22, 2021 9:59 PM (GMT -4)
Earthquake depth: 10.0 km
The epicenter geogr. wide length: 42.41631°N / 71.4169°W (Middlesex, Massachusetts, USA)
Seismic opposite pole: 42416°S/108.583°E
Nearby places and cities:
3 km southeast the foundation (pop: 10100) -> earthquakes nearby!
4 km north Sudbury (pop: 17300) -> earthquake is near!
14 km northeast of Phon Marlboro (pop: 39800) -> earthquake is near!
15 km north Framingham (pop: 68300) -> earthquake is near!
16 km west northwest Waltham (pop count: 63400) -> earthquake is near!
19 km west northwest Newton (pop: 88800) -> Near earthquake!
26 km SSW from howl (bang: 110700) -> earthquake is near!
26 km west Cambridge (bang: 110400) -> earthquake is near!
30 km west northwest Boston (pop: 667100) -> earthquake is near!
615 km northeast of Fon Washington, District of Columbia) (pop: 601700) -> Near earthquake!
mist 21.4 °C (71 F), humidity: 87%, wind: 3 m/s (6 knots) from southeast
Primary data source: VolcanoDiscovery
Even if you don’t feel itEven though you were around, this is interesting information that you might like I can share! Original earthquake reports from users are of great interest to earthquake research, as they help in improving models related to ground vibrations and thus potential earthquake risks. You can use Fix your device’s position or drag the animated marker on the map to your location to indicate your location at the time of the earthquake (optional). Thank you so much!
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Sudbury (0 km northwest of the epicenter) [Map] / Very weak shaking (MMI II) / rattling, shaking / 15-20 seconds
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