Moderate mag. 4.2 earthquake - 1.9 Km SW of Keilir, Iceland, on Monday, 1 Mar 2021 2:12 pm (GMT +0) -
This quake was likely an aftershock of the 5.7 quake 3.0 Km S of Hella, Iceland, 24 Feb 2021 10:05 am (GMT +0), which had occurred 5 days earlier.
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Moderate magnitude 4.2 earthquake at 7 km depth
1 Mar 14:17 UTC: First to report: IMO after 4 minutes.
1 Mar 14:25: Magnitude recalculated from 3.5 to 3.7. Hypocenter depth recalculated from 6.4 to 7.3 km (from 4 to 4.5 mi). Epicenter location corrected by 1.3 km (0.8 mi) towards SW.
1 Mar 14:29: Magnitude recalculated from 3.7 to 4.2.
1 Mar 14:25: Magnitude recalculated from 3.5 to 3.7. Hypocenter depth recalculated from 6.4 to 7.3 km (from 4 to 4.5 mi). Epicenter location corrected by 1.3 km (0.8 mi) towards SW.
1 Mar 14:29: Magnitude recalculated from 3.7 to 4.2.
Date & time: 1 Mar 2021 14:12:37 UTC -
Local time at epicenter: Monday, 1 Mar 2021 2:12 pm (GMT +0)
Magnitude: 4.2
Depth: 7.3 km
Epicenter latitude / longitude: 63.931°N / 22.202°W

Nearest volcano: Krísuvík (5 km / 3 mi)
Nearby towns and cities:
11 km (7 mi) ESE of Vogar (pop: 1,030) --> See nearby quakes!
16 km (10 mi) NE of Grindavik (pop: 2,860) --> See nearby quakes!
20 km (12 mi) SW of Hafnarfjordur (pop: 26,800) --> See nearby quakes!
22 km (14 mi) SW of Garðabaer (pop: 11,400) --> See nearby quakes!
25 km (15 mi) SW of Kopavogur (pop: 31,700) --> See nearby quakes!
27 km (17 mi) SSW of Reykjavik (pop: 118,900) --> See nearby quakes!
27 km (17 mi) ESE of Sangerdhi (pop: 1,550) --> See nearby quakes!
36 km (22 mi) SW of Mosfellsbaer (pop: 8,650) --> See nearby quakes!
41 km (25 mi) WNW of Thorlakshofn (pop: 1,490) --> See nearby quakes!
44 km (27 mi) S of Akranes (pop: 6,610) --> See nearby quakes!
Weather at epicenter at time of quake:
Broken Clouds
4.5°C (40 F), humidity: 65%, wind: 6 m/s (12 kts) from SW
Primary data source: IMO (Icelandic Met Office)Broken Clouds

Estimated released energy: 1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 tons of TNT) More info
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.
Magnitude | Depth | Location | Source |
4.2 | 7.3 km | 1.9 Km SW of Keilir, Iceland | IMO |
3.5 | 6 km | ICELAND REGION | EMSC |
User reports for this quake (18)
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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10.1 km WNW of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
26.8 km NE of epicenter [Map] / not felt : Did not feel it. (reported through our app)
18.9 km WNW of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
27.4 km NE of epicenter [Map] / Very weak shaking (MMI II) / single lateral shake / 2-5 s
18.5 km WNW of epicenter [Map] / Light shaking (MMI IV) / rattling, vibrating / 1-2 s (reported through our app)
10 km NW of epicenter [Map] / not felt (reported through our app)
26.5 km NNE of epicenter [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s (reported through our app)
27.4 km NNE of epicenter [Map] / Very weak shaking (MMI II) (reported through our app)
Gardabaer / Weak shaking (MMI III)
Seltjarnarnes / Light shaking (MMI IV)
Kópavogur / Weak shaking (MMI III)
108 Reykjavik / Weak shaking (MMI III) / rattling, vibrating / 1-2 s
reykjavik / Light shaking (MMI IV) / 1-2 s
Sandgerði / Very weak shaking (MMI II) / 1-2 s
Kópavogur / Weak shaking (MMI III) / horizontal (sideways) swinging / 1-2 s
reykjavik / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
Reykjavík 105, ground floor / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s
Reykjavík / Moderate shaking (MMI V) / rattling, vibrating / 1-2 s
Earlier earthquakes in the same area
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