Moderate mag. 4.5 earthquake - 1.5 Km SE of Fagradalsfjall, Iceland, on Thursday, 4 Mar 2021 8:54 am (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 8 days earlier.
Moderate mag. 4.5 earthquake - 1.5 Km SE of Fagradalsfjall, Iceland, on Thursday, 4 Mar 2021 8:54 am (GMT +0)

Moderate magnitude 4.5 earthquake at 7 km depth

4 Mar 09:00 UTC: First to report: GFZ after 6 minutes.
4 Mar 09:05: Now using data updates from IMO
4 Mar 09:14: Magnitude recalculated from 4.2 to 4.5. Hypocenter depth recalculated from 7.3 to 6.7 km (from 4.5 to 4.2 mi). Epicenter location corrected by 1.8 km (1.1 mi) towards SSE.
Date & time: 4 Mar 2021 08:54:07 UTC -
Local time at epicenter: Thursday, 4 Mar 2021 8:54 am (GMT +0)
Magnitude: 4.5
Depth: 6.7 km
Epicenter latitude / longitude: 63.891°N / 22.256°W (Hafnarfjarðarkaupstaður, Capital Region, Iceland)
Nearest volcano: Krísuvík (9 km / 6 mi)
Nearby towns and cities:
11 km (7 mi) NE of Grindavik (Southern Peninsula) (pop: 2,860) --> See nearby quakes!
19 km (12 mi) SE of Reykjanesbaer (Southern Peninsula) (pop: 2,010) --> See nearby quakes!
25 km (16 mi) SW of Hafnarfjordur (pop: 26,800) --> See nearby quakes!
27 km (17 mi) SW of Garðabaer (pop: 11,400) --> See nearby quakes!
30 km (18 mi) SW of Kopavogur (pop: 31,700) --> See nearby quakes!
32 km (20 mi) SSW of Reykjavik (pop: 118,900) --> See nearby quakes!
41 km (25 mi) SW of Mosfellsbaer (pop: 8,650) --> See nearby quakes!
43 km (27 mi) W of Thorlakshofn (South) (pop: 1,490) --> See nearby quakes!
49 km (30 mi) S of Akranes (West) (pop: 6,610) --> See nearby quakes!
54 km (33 mi) WSW of Hveragerdi (South) (pop: 2,290) --> See nearby quakes!
Weather at epicenter at time of quake:
Broken Clouds 3°C (37 F), humidity: 100%, wind: 7 m/s (14 kts) from SE
Primary data source: IMO (Icelandic Met Office)
Estimated released energy: 3.5 x 1011 joules (98.6 megawatt hours, equivalent to 84.8 tons of TNT) More info
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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.
MagnitudeDepthLocationSource
4.56.7 km1.5 Km SE of Fagradalsfjall, IcelandIMO
4.610 kmIcelandGFZ
4.710 km9 Km SSW of Hafnarfjörður, IcelandUSGS
4.710 kmICELANDEMSC

User reports for this quake (69)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Reykjavik / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s : I’m on the 7. floor in 12 story building. I feel swaying sideways most times but sometimes back and forth. Nothing falling of walls etc. | One user found this interesting.  
Hátún 4 105 Reykjavík (32.8 km NNE of epicenter) [Map] / Moderate shaking (MMI V) / rattling, vibrating
32.9 km NE of epicenter [Map] / Moderate shaking (MMI V) / 2-5 s
reykjavik (32.4 km NNE of epicenter) [Map] / Moderate shaking (MMI V) / 2-5 s
Kópavogur (29.6 km NNE of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
9.5 km WSW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
17.2 km WNW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
17.9 km WNW of epicenter [Map] / Strong shaking (MMI VI) / rattling, vibrating / 2-5 s (reported through our app)
17.3 km WNW of epicenter [Map] / Moderate shaking (MMI V) / 2-5 s
Hátún 4 105 Reykjavík (32.8 km NNE of epicenter) [Map] / Moderate shaking (MMI V) / rattling, vibrating
10.6 km WSW of epicenter [Map] / Weak shaking (MMI III) / 1-2 s (reported through our app)
18.7 km NW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
11.9 km NNW of epicenter [Map] / Weak shaking (MMI III) / 1-2 s (reported through our app)
28.1 km NNE of epicenter [Map] / Light shaking (MMI IV)
82 km E of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
25.5 km NE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
15.9 km WNW of epicenter [Map] / Strong shaking (MMI VI) / 5-10 s (reported through our app)
11.4 km NNW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
53 km ENE of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
19 km NW of epicenter [Map] / Light shaking (MMI IV) / 2-5 s : Wake me up, quite rapid and long shake  
27 km NW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
Reykjavik 109 (31.1 km NE of epicenter) [Map] / Moderate shaking (MMI V) / both vertical and horizontal swinging / 2-5 s (reported through our app)
26.3 km NE of epicenter [Map] / Light shaking (MMI IV) / 1-2 s (reported through our app)
Grafarvogi (35 km NE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s (reported through our app)
29.6 km NE of epicenter [Map] / Light shaking (MMI IV) / 2-5 s (reported through our app)
Reykjavik (32.2 km NNE of epicenter) [Map] / Light shaking (MMI IV) / 2-5 s (reported through our app)
27.8 km NE of epicenter [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
31.6 km NNE of epicenter [Map] / Light shaking (MMI IV)
22.3 km NE of epicenter [Map] / Very strong shaking (MMI VII) (reported through our app)
25 km NE of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
18.3 km WNW of epicenter [Map] / Very strong shaking (MMI VII) (reported through our app)
32.9 km NNE of epicenter [Map] / Very weak shaking (MMI II) / rattling, vibrating (reported through our app)
10.9 km WSW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
Reykjavík (31.8 km NE of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
31.9 km NNE of epicenter [Map] / not felt / 1-2 s (reported through our app)
Reykjavik (32.6 km NE of epicenter) [Map] / Strong shaking (MMI VI) / rattling, vibrating
31.7 km NNE of epicenter [Map] / Light shaking (MMI IV) / 2-5 s (reported through our app)
18.2 km WNW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
18 km NW of epicenter [Map] / Moderate shaking (MMI V) / 2-5 s (reported through our app)
33.3 km NE of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
32.9 km NE of epicenter [Map] / Moderate shaking (MMI V) / 2-5 s
26.1 km NE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
19 km NW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
18.3 km WNW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
33.4 km NE of epicenter [Map] / Weak shaking (MMI III)
21.6 km WNW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
Reykjavik, Hlemmur area / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Vogar / Weak shaking (MMI III) / rattling, vibrating / very short
Reykjavík 105 - ground floor / Moderate shaking (MMI V) / 2-5 s : The rumbling noise woke me up, and I’m a heavy sleeper. Then bed and house started vibrating  
Austurkór Kópavogur / Weak shaking (MMI III) / both vertical and horizontal swinging / 1-2 s
Reykjavik 101 / Light shaking (MMI IV)
reykjavik / Light shaking (MMI IV)
Reykjavik / Moderate shaking (MMI V) / rattling, vibrating / 5-10 s : I was sitting in school with my friends and the building started shaking  
Njarðvík / Weak shaking (MMI III) / horizontal (sideways) swinging / 1-2 s
Keflavik / Light shaking (MMI IV) / 1-2 s
vesturbær / Weak shaking (MMI III) / rattling, vibrating / 1-2 s
Reykjavík / Moderate shaking (MMI V)
Reykjavik, Hamraborg / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s : Woke up from the vibrations  
108 Reykjavik / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Grindavík / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Reykjavik, Korngardar 3 / Weak shaking (MMI III)
Innri-Njarðvík / Weak shaking (MMI III) / rattling, vibrating / 1-2 s
Njarðvík / Weak shaking (MMI III) / horizontal (sideways) swinging / 1-2 s
Hlemmur / Moderate shaking (MMI V) / 2-5 s
Gardur / Moderate shaking (MMI V)
Njarðvík / Light shaking (MMI IV)
Njarðvík / Light shaking (MMI IV)
Reykjavík / Light shaking (MMI IV)
Mosfellsbær / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
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