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Strong mag. 5.0 earthquake - North Atlantic Ocean on Tuesday, Mar 21, 2023 at 5:46 pm (GMT -3) -

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Strong magnitude 5.0 earthquake at 10 km depth

21 Mar 20:58 UTC: First to report: GFZ after 12 minutes.
21 Mar 21:12: Magnitude recalculated from 4.5 to 4.6. Epicenter location corrected by 7.8 km (4.9 mi) towards E.
21 Mar 21:18: Now using data updates from USGS

Earthquake details

Date & time	Mar 21, 2023 20:46:54 UTC -
Local time at epicenter	Tuesday, Mar 21, 2023 at 5:46 pm (GMT -3)
Status	Confirmed
Magnitude	5
Depth	10.0 km
Epicenter latitude / longitude	28.437°N / 43.6415°W
Antipode	28.437°S / 136.359°E
Shaking intensity	Moderate shaking near epicenter
Felt	0 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	###NEARESTVOLCANO2###
Nearby towns and cities
Weather at epicenter at time of quake
Estimated seismic energy released	2 x 10¹² joules (554 megawatt hours, equivalent to 477 tons of TNT) \| about seismic energy

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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.	Depth	Location	Source
5.0	10 km	Northern Mid-Atlantic Ridge	USGS
4.6	33 km	4.6 NORTHERN MID-ATLANTIC RIDGE	EMSC
5.0	10 km	Northern Mid Atlantic Ridge	RaspberryShake
4.6	10 km	Northern Mid-Atlantic Ridge	GFZ
5.0	10 km	Northern Mid-Atlantic Ridge	IRIS

Most recent quakes Top 20 past 24 hrs

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.

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Old Orchard Beach / not felt

Aftershocks

[More info]

Recorded aftershocks, latest first (1 quake)

Date and time	Mag Depth	Location	Details
Mar 21, 2023 20:49 10 weeks ago	5.0 10 km	North Atlantic Ocean	More

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