Moderate mag. 4.0 earthquake - 1.9 Km SSE of Fagradalsfjall, Iceland, on Tuesday, 9 Mar 2021 11:01 pm (GMT +0) -

This quake was likely an aftershock of the 5.0 quake 3.2 km WSW of Fagradalsfjall, Reykjanes peninsula, Iceland, 7 Mar 2021 2:01 am (GMT +0), which had occurred 3 days earlier.
Moderate mag. 4.0 earthquake - 1.9 Km SSE of Fagradalsfjall, Iceland, on Tuesday, 9 Mar 2021 11:01 pm (GMT +0)

Moderate magnitude 4.0 earthquake at 6 km depth

9 Mar 23:05 UTC: First to report: EMSC after 3 minutes.
9 Mar 23:06: Magnitude recalculated from 3.3 to 4.1. Hypocenter depth recalculated from 7.0 to 6.0 km (from 4.3 to 3.7 mi). Epicenter location corrected by 1.5 km (0.9 mi) towards NE.
... [show all] ...
9 Mar 23:34: Hypocenter depth recalculated from 6.6 to 6.4 km (from 4.1 to 4 mi).
Date & time: 9 Mar 2021 23:01:43 UTC -
Local time at epicenter: Tuesday, 9 Mar 2021 11:01 pm (GMT +0)
Magnitude: 4
Depth: 6.4 km
Epicenter latitude / longitude: 63.886°N / 22.259°W (Grindavikurbær, Southern Peninsula, Iceland)
Nearest volcano: Fagradalsfjall (3 km / 2 mi)
Nearby towns and cities:
10 km (6 mi) ENE of Grindavik (pop: 2,860) --> See nearby quakes!
19 km (12 mi) SE of Reykjanesbaer (pop: 2,010) --> See nearby quakes!
26 km (16 mi) SW of Hafnarfjordur (Capital Region) (pop: 26,800) --> See nearby quakes!
28 km (17 mi) SW of Garðabaer (Capital Region) (pop: 11,400) --> See nearby quakes!
30 km (19 mi) SSW of Kopavogur (Capital Region) (pop: 31,700) --> See nearby quakes!
33 km (20 mi) SSW of Reikiavik (Capital Region) (pop: 118,900) --> See nearby quakes!
41 km (26 mi) SW of Mosfellsbaer (Capital Region) (pop: 8,650) --> See nearby quakes!
43 km (27 mi) W of Thorlakshofn (South) (pop: 1,490) --> See nearby quakes!
49 km (31 mi) S of Akranes (West) (pop: 6,610) --> See nearby quakes!
54 km (34 mi) WSW of Hveragerdi (South) (pop: 2,290) --> See nearby quakes!
Weather at epicenter at time of quake:
Light Rain And Snow 1.5°C (35 F), humidity: 93%, wind: 9 m/s (18 kts) from NNE
Primary data source: IMO (Icelandic Met Office)
Estimated released energy: 6.3 x 1010 joules (17.5 megawatt hours, equivalent to 15.1 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.
Mag.DepthLocationSource
4.06.4 km1.9 Km SSE of Fagradalsfjall, IcelandIMO
4.07 kmICELAND REGIONEMSC

User reports for this quake (68)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Kopavogur smaralind / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s : The bed was shaking for about 5 seconds and after a minute again and again. My baby woke up | One user found this interesting.  
34.3 km NE of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
Reykjavík 105 (34.2 km NNE of epicenter) [Map] / Very weak shaking (MMI II) (reported through our app)
34.2 km NNE of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
22.4 km NE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
32 km NNE of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
32.7 km NNE of epicenter [Map] / Very weak shaking (MMI II) (reported through our app)
32.4 km NNE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
19 km NW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
Borgarnes (74.3 km NNE of epicenter) [Map] / Strong shaking (MMI VI)
19.1 km NW of epicenter [Map] / Weak shaking (MMI III) / 5-10 s (reported through our app)
32.9 km NNE of epicenter [Map] / Strong shaking (MMI VI) (reported through our app)
17.6 km WNW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
18 km WNW of epicenter [Map] / Light shaking (MMI IV)
Ilona Njarðvík (15 km NW of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
14.7 km NW of epicenter [Map] / Light shaking (MMI IV) / rattling, vibrating / 1-2 s (reported through our app)
17.7 km WNW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
32.8 km NNE of epicenter [Map] / Strong shaking (MMI VI) (reported through our app)
18.2 km WNW of epicenter [Map] / Moderate shaking (MMI V) / 2-5 s (reported through our app)
33.1 km NNE of epicenter [Map] / Very weak shaking (MMI II) / single vertical bump / 1-2 s
16.2 km NW of epicenter [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s (reported through our app)
Ásbrú, Reykjanes Peninsula (17.4 km WNW of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / 2-5 s (reported through our app)
32 km NNE of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
10 km WSW of epicenter [Map] / Moderate shaking (MMI V) / rattling, vibrating / 1-2 s (reported through our app)
49.3 km N of epicenter [Map] / Very weak shaking (MMI II) (reported through our app)
28.6 km NW of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
12.8 km NNW of epicenter [Map] / Light shaking (MMI IV) / single vertical bump / 2-5 s (reported through our app)
33.7 km NE of epicenter [Map] / Light shaking (MMI IV) / 1-2 s
33.9 km NNE of epicenter [Map] / Light shaking (MMI IV)
31.7 km NE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
12 km NNW of epicenter [Map] / Strong shaking (MMI VI) (reported through our app)
18.1 km WNW of epicenter [Map] / Light shaking (MMI IV) / 5-10 s (reported through our app)
Reykjavik (32.1 km NE of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / 2-5 s (reported through our app)
31.7 km NE of epicenter [Map] / Weak shaking (MMI III)
20 km NW of epicenter [Map] / Moderate shaking (MMI V) / 2-5 s (reported through our app)
33.8 km NE of epicenter [Map] / Very weak shaking (MMI II) (reported through our app)
15.8 km NW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
17.3 km WNW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
33.9 km NNE of epicenter [Map] / Moderate shaking (MMI V) : the furniture shaked  
Reykjavik / Light shaking (MMI IV) / single lateral shake / 1-2 s
Reykjavik / Light shaking (MMI IV) / 1-2 s
Reykjavik, Hlemmur area / Light shaking (MMI IV) / single vertical bump / 1-2 s
Kópavogur / Light shaking (MMI IV) / single lateral shake / 1-2 s
Reykjavik 103 / Light shaking (MMI IV)
Reykjavik / Light shaking (MMI IV) / single lateral shake / 1-2 s
Keflavik / Very weak shaking (MMI II) / 1-2 s
105 / Light shaking (MMI IV)
Holtsgata 14, Hafnarfjörður 220 / Light shaking (MMI IV)
Reykjavik downtown / Weak shaking (MMI III) / single lateral shake / very short
Keflavik / Light shaking (MMI IV)
Seltjarnarnes, Iceland / Weak shaking (MMI III)
Reykjavik / Very weak shaking (MMI II)
Reykjavik / Very weak shaking (MMI II) / single lateral shake / 1-2 s : Windows move  
reykjavik / Moderate shaking (MMI V) / vertical swinging (up and down)
108 Reykjavík / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Keflavik / Light shaking (MMI IV)
Reykjavik, Grundarstigur 4 / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s
Keflavik / Light shaking (MMI IV) / horizontal (sideways) swinging / 1-2 s
Keflavik / Light shaking (MMI IV)
Airport / Light shaking (MMI IV)
Reykjavik / Light shaking (MMI IV)
Laugavegur / Light shaking (MMI IV)
Reykjanesbaer / Light shaking (MMI IV) / rattling, vibrating / 1-2 s
Ásbrú / Light shaking (MMI IV) / rattling, vibrating / 1-2 s
101 Reykjavik / Very weak shaking (MMI II) / horizontal (sideways) swinging / 1-2 s
Njarðvík / Very weak shaking (MMI II) / 2-5 s
Njardvik / Light shaking (MMI IV)
Keflavik / Weak shaking (MMI III) / single lateral shake / 1-2 s
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