Moderate mag. 3.8 earthquake - 1.0 Km SW of Keilir, Iceland, on Wednesday, 3 Mar 2021 11:05 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 7 days earlier.
Quake Data | Interactive map | User Reports | Earlier quakes in same area | Quakes in Iceland| Southern Peninsula | Capital Region | West | South

Moderate magnitude 3.8 earthquake at 7 km depth
3 Mar 11:14 UTC: First to report: IMO after 9 minutes.
3 Mar 11:17: Magnitude recalculated from 3.4 to 3.8. Hypocenter depth recalculated from 6.6 to 7.0 km (from 4.1 to 4.3 mi).
3 Mar 11:17: Magnitude recalculated from 3.4 to 3.8. Hypocenter depth recalculated from 6.6 to 7.0 km (from 4.1 to 4.3 mi).
Date & time: 3 Mar 2021 11:05:04 UTC -
Local time at epicenter: Wednesday, 3 Mar 2021 11:05 am (GMT +0)
Magnitude: 3.8
Depth: 7.0 km
Epicenter latitude / longitude: 63.933°N / 22.185°W

Nearest volcano: Krísuvík (4 km / 2 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!
19 km (12 mi) SW of Hafnarfjordur (pop: 26,800) --> See nearby quakes!
22 km (13 mi) SW of Garðabaer (pop: 11,400) --> See nearby quakes!
24 km (15 mi) SSW of Kopavogur (pop: 31,700) --> See nearby quakes!
27 km (17 mi) SSW of Reykjavik (pop: 118,900) --> See nearby quakes!
28 km (17 mi) ESE of Sangerdhi (pop: 1,550) --> See nearby quakes!
35 km (22 mi) SW of Mosfellsbaer (pop: 8,650) --> See nearby quakes!
44 km (27 mi) S of Akranes (pop: 6,610) --> See nearby quakes!
49 km (31 mi) W of Hveragerdi (pop: 2,290) --> See nearby quakes!
Weather at epicenter at time of quake:
Overcast Clouds
4.6°C (40 F), humidity: 93%, wind: 9 m/s (17 kts) from ESE
Primary data source: IMO (Icelandic Met Office)Overcast Clouds

Estimated released energy: 3.2 x 1010 joules (8.78 megawatt hours, equivalent to 7.56 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 |
3.8 | 7 km | 1.0 Km SW of Keilir, Iceland | IMO |
3.4 | 7 km | ICELAND REGION | EMSC |
User reports for this quake (34)
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Reykjavik (26.4 km NNE of epicenter) [Map] / Moderate shaking (MMI V)
20.2 km NE of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
26.6 km NNE of epicenter [Map] / Weak shaking (MMI III)
26.1 km NNE of epicenter [Map] / Weak shaking (MMI III) / vertical swinging (up and down) / 1-2 s
26.1 km NNE of epicenter [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s (reported through our app)
Reykjavik, Grafarholt (31.6 km NE of epicenter) [Map] / Very weak shaking (MMI II) / very short (reported through our app)
26.7 km NNE of epicenter [Map] / Moderate shaking (MMI V) / vertical swinging (up and down) (reported through our app)
Reykjavik (26.4 km NNE of epicenter) [Map] / Moderate shaking (MMI V)
20.4 km NE of epicenter [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 1-2 s (reported through our app)
26.1 km NNE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
26.7 km NNE of epicenter [Map] / Weak shaking (MMI III)
27.8 km NE of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
26.3 km NNE of epicenter [Map] / Very weak shaking (MMI II) / very short (reported through our app)
Reykjavík 105 (27.9 km NNE of epicenter) [Map] / Very weak shaking (MMI II) (reported through our app)
18.6 km WNW of epicenter [Map] / Light shaking (MMI IV) / single lateral shake / 2-5 s (reported through our app)
19.4 km NE of epicenter [Map] / Strong shaking (MMI VI) (reported through our app)
19.3 km WNW of epicenter [Map] / Moderate shaking (MMI V) / rattling, vibrating / very short (reported through our app)
24.5 km NE of epicenter [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s (reported through our app)
Reykjavík (26.5 km NNE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s (reported through our app)
19.1 km NE of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
25.3 km NE of epicenter [Map] / Weak shaking (MMI III) / 5-10 s (reported through our app)
26.3 km NNE of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
17.7 km NE of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
rejkjavik (33.1 km NNE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
27.1 km NNE of epicenter [Map] / Light shaking (MMI IV) / single vertical bump / 1-2 s (reported through our app)
20 km WNW of epicenter [Map] / Very weak shaking (MMI II) (reported through our app)
25.5 km NNE of epicenter [Map] / Very weak shaking (MMI II) / 1-2 s (reported through our app)
Reykjavik (26.4 km NNE of epicenter) [Map] / Light shaking (MMI IV) / complex motion difficult to describe (reported through our app)
25.5 km NE of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
Reykjavik / Light shaking (MMI IV) / 1-2 s
Breidholt / Weak shaking (MMI III) / 1-2 s
reykjavik / Moderate shaking (MMI V) / rattling, vibrating
Reykjavík / Moderate shaking (MMI V) / single vertical bump
Hafnarfjordur / Light shaking (MMI IV)
Earlier earthquakes in the same area since 1900
- Date / time UTC| Mag |Depth|Age|Distance| Details
- 21 Jun 2000 00:51| 6.5 |10km / 6.2mi|21 years ago|70km / 43mi| Grimsnes- og Grafningshreppur, South, 58 km E of Reykjavik, Iceland
- 17 Jun 2000 15:40| 6.5 |10km / 6.2mi|21 years ago|83km / 52mi| Rangarþing Ytra, South, 71 km E of Reykjavik, Iceland
- 29 May 2008 15:46| 6.3 |9km / 5.6mi|13 years ago|58km / 36mi| 8 km N of Selfoss, Sveitarfélagið Arborg, South, Iceland
- 23 Jul 1929 18:43| 6.2 |10km / 6.2mi|92 years ago|24km / 15mi| 2.7 km SE of Kopavogur, Kopavogsbær, Capital Region, Iceland
- 25 May 1987 11:31| 6.0 |7.6km / 4.7mi|34 years ago|121km / 75mi| Rangarþing Eystra, South, 110 km E of Reykjavik, Iceland
- 05 Dec 1968 09:44| 6.0 |10km / 6.2mi|52 years ago|11km / 7mi| 15 km S of Hafnarfjordur, Hafnarfjarðarkaupstaður, Capital Region, Iceland
- 24 Feb 2021 10:05| 5.7 |1.1km / 0.7mi|8 weeks ago|2km / 1mi| 3.0 Km S of Hella, Iceland
- 20 Oct 2020 13:43| 5.6 |3.3km / 2.1mi|26 weeks ago|5km / 3mi| 3.9 Km WNW of Krýsuvík, Iceland
- 27 Feb 2021 08:07| 5.2 |4.8km / 3mi|7 weeks ago|3km / 2mi| 2.7 Km NE of Fagradalsfjall, Iceland
- 01 Mar 2021 16:35| 5.0 |2.6km / 1.6mi|7 weeks ago|2km / 1mi| 1.0 Km E of Keilir, Iceland
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