Moderate mag. 4.6 earthquake - 3.9 Km S of Fagradalsfjall, Iceland, on Sunday, Mar 14, 2021 at 12:34 pm (GMT +0)

This quake was likely an aftershock of the 5.1 quake 10.4 Km ESE of Grindavík, Iceland, Mar 10, 2021 3:14 am (GMT +0), which had occurred 4 days earlier.
Moderate mag. 4.6 earthquake - 3.9 Km S of Fagradalsfjall, Iceland, on Sunday, Mar 14, 2021 at 12:34 pm (GMT +0) Moderate mag. 4.6 earthquake - 3.9 Km S of Fagradalsfjall, Iceland, on Sunday, Mar 14, 2021 at 12:34 pm (GMT +0)

Moderate magnitude 4.6 earthquake at 5 km depth

14 Mar 12:36 UTC: First to report: EMSC after 2 minutes.
14 Mar 12:38: Magnitude recalculated from 4.1 to 4.0. Hypocenter depth recalculated from 5.0 to 6.0 km (from 3.1 to 3.7 mi).
... [show all] ...
14 Mar 15:14: Magnitude recalculated from 4.9 to 4.6.

Earthquake details

Date & timeMar 14, 2021 12:34:36 UTC
Local time at epicenterSunday, Mar 14, 2021 at 12:34 pm (GMT +0)
StatusConfirmed
Magnitude4.6
Depth4.6 km
Epicenter latitude / longitude63.867°N / 22.283°W (Grindavikurbær, Southern Peninsula, Iceland)
Antipode63.867°S / 157.717°E
Shaking intensityLight shaking
Felt45 reports
Primary data sourceIMO (Icelandic Met Office)
Nearest volcanoFagradalsfjall (4 km / 2 mi)
Nearby towns and cities8 km (5 mi) ENE of Grindavik (pop: 2,860) | Show on map | Quakes nearby
20 km (12 mi) SE of Reykjanesbær (Penisola meridionale) (pop: 2,010) | Show on map | Quakes nearby
28 km (17 mi) SW of Hafnarfjordur (Capital Region) (pop: 26,800) | Show on map | Quakes nearby
30 km (19 mi) SW of Garðabaer (Capital Region) (pop: 11,400) | Show on map | Quakes nearby
33 km (20 mi) SSW of Kopavogur (Capital Region) (pop: 31,700) | Show on map | Quakes nearby
35 km (22 mi) SSW of Reykjavik (Capital Region) (pop: 118,900) | Show on map | Quakes nearby
44 km (27 mi) SW of Mosfellsbaer (Capital Region) (pop: 8,650) | Show on map | Quakes nearby
44 km (27 mi) W of Thorlakshofn (South) (pop: 1,490) | Show on map | Quakes nearby
52 km (32 mi) S of Akranes (West) (pop: 6,610) | Show on map | Quakes nearby
56 km (35 mi) WSW of Hveragerdi (South) (pop: 2,290) | Show on map | Quakes nearby
Weather at epicenter at time of quakeClear Sky 1°C (34 F), humidity: 55%, wind: 3 m/s (5 kts) from SE
Estimated seismic energy released5 x 1011 joules (139 megawatt hours, equivalent to 120 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.DepthLocationSource
4.64.6 km3.9 Km S of Fagradalsfjall, IcelandIMO
4.52 kmICELANDEMSC
4.510 km8 Km ESE of Hafnarfjörður, IcelandUSGS
4.310 kmIcelandGFZ

User reports for this quake (46)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Keflavik / Light shaking (MMI IV) : Short and very fast shake | 2 users found this interesting.  
Reikiavik, Reykjavíkurborg, Capital Region (35.1 km NNE of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / very short
Reikiavik, Reykjavíkurborg, Capital Region (35.1 km NNE of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / very short
Borgarnes, West (76.6 km NNE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Reikiavik, Reykjavíkurborg, Capital Region (35.1 km NNE of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / very short
Borgarnes, West (77.2 km NNE of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
Reikiavik, Reykjavíkurborg, Capital Region (36 km NNE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Ásbrú, Reykjanes Peninsula (17.7 km NW of epicenter) [Map] / Moderate shaking (MMI V) / rattling, vibrating / 5-10 s (reported through our app)
Mosfellsbær, Capital Region (44.6 km NE of epicenter) [Map] / not felt (reported through our app)
Reykjanesbaer, Southern Peninsula (22 km NW of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
Reykjanesbaer, Southern Peninsula (20.4 km NW of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
Reikiavik, Reykjavíkurborg, Capital Region (35.3 km NNE of epicenter) [Map] / Strong shaking (MMI VI) (reported through our app)
Grindavik, Southern Peninsula (7.7 km WSW of epicenter) [Map] / Very strong shaking (MMI VII) (reported through our app)
Seltjarnarnes, Capital Region (35 km NNE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Reikiavik, Reykjavíkurborg, Capital Region (34.3 km NNE of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
Reykjanesbaer, Southern Peninsula (19.5 km NW of epicenter) [Map] / Moderate shaking (MMI V) / 1-2 s (reported through our app)
Reykjanesbaer, Southern Peninsula (19.5 km NW of epicenter) [Map] / Moderate shaking (MMI V) / complex motion difficult to describe / 5-10 s (reported through our app)
Hafnarfjordur, Capital Region (26.4 km NE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Hafnarfjordur, Capital Region (27.7 km NE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Reykjavík (36.4 km NNE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Reykjavik 109 Engjasel (34 km NE of epicenter) [Map] / Light shaking (MMI IV) / 2-5 s
Reykjavík 105 (35.9 km NNE of epicenter) [Map] / Light shaking (MMI IV) / 1-2 s (reported through our app)
Gardur, Sveitarfélagið Garður, Southern Peninsula (29.2 km NW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / very short (reported through our app)
Reikiavik, Reykjavíkurborg, Capital Region (34.8 km NNE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Reikiavik, Reykjavíkurborg, Capital Region (34.8 km NNE of epicenter) [Map] / Very weak shaking (MMI II) / very short (reported through our app)
Kopavogur, Capital Region (34.1 km NE of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
Reykjanesbaer, Southern Peninsula (19.7 km NW of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Sangerdhi, Southern Peninsula (29.8 km NW of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Seltjarnarnes, Capital Region (34.7 km NNE of epicenter) [Map] / Light shaking (MMI IV) / 2-5 s (reported through our app)
Njardvik (15.5 km NW of epicenter) [Map] / Light shaking (MMI IV) : Doors shaking walls rumbling (reported through our app)  
Reykjanesbaer, Southern Peninsula (15.9 km NW of epicenter) [Map] / Strong shaking (MMI VI) / horizontal (sideways) swinging / 2-5 s (reported through our app)
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