Moderate mag. 3.8 earthquake - 3.3 Km S of Fagradalsfjall, Iceland, on Friday, 12 Mar 2021 6:36 am (GMT +0) -
Moderate magnitude 3.8 earthquake at 3 km depth
12 Mar 06:40 UTC: First to report: EMSC after 4 minutes.
12 Mar 06:46: Now using data updates from IMO
... [show all] ...12 Mar 06:46: Magnitude recalculated from 3.7 to 4.0. Hypocenter depth recalculated from 0.9 to 1.4 km (from 0.6 to 0.9 mi). Epicenter location corrected by 1.5 km (0.9 mi) towards SW.
12 Mar 06:50: Magnitude recalculated from 4.0 to 3.7. Hypocenter depth recalculated from 1.4 to 0.9 km (from 0.9 to 0.6 mi). Epicenter location corrected by 1.4 km (0.9 mi) towards NE.
12 Mar 06:54: Magnitude recalculated from 3.7 to 3.8. Hypocenter depth recalculated from 0.9 to 3.0 km (from 0.6 to 1.9 mi). Epicenter location corrected by 1.1 km (0.7 mi) towards S.
12 Mar 17:30: Hypocenter depth recalculated from 3.0 to 3.4 km (from 1.9 to 2.1 mi).
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Date & time: 12 Mar 2021 06:36:30 UTC -
Local time at epicenter: Friday, 12 Mar 2021 6:36 am (GMT +0)
Magnitude: 3.8
Depth: 3.4 km
Epicenter latitude / longitude: 63.873°N / 22.275°W
(
Grindavikurbær,
Southern Peninsula,
Iceland)
Nearest volcano:
Fagradalsfjall (3 km / 2 mi)
Nearby towns and cities:9 km (6 mi) ENE of Grindavik (pop: 2,860) -->
See nearby quakes!20 km (12 mi) SE of Reykjanesbaer (pop: 2,010) -->
See nearby quakes!27 km (17 mi) SW of Hafnarfjordur (Capital Region) (pop: 26,800) -->
See nearby quakes!30 km (18 mi) SW of Garðabaer (Capital Region) (pop: 11,400) -->
See nearby quakes!32 km (20 mi) SSW of Kopavogur (Capital Region) (pop: 31,700) -->
See nearby quakes!35 km (21 mi) SSW of Reikiavik (Capital Region) (pop: 118,900) -->
See nearby quakes!43 km (27 mi) SW of Mosfellsbaer (Capital Region) (pop: 8,650) -->
See nearby quakes!44 km (27 mi) W of Thorlakshofn (South) (pop: 1,490) -->
See nearby quakes!51 km (32 mi) S of Akranes (West) (pop: 6,610) -->
See nearby quakes!55 km (34 mi) WSW of Hveragerdi (South) (pop: 2,290) -->
See nearby quakes!
Weather at epicenter at time of quake: Broken Clouds
1.5°C (35 F), humidity: 80%, wind: 11 m/s (22 kts) from NNE
Primary data source:
IMO (Icelandic Met Office)
Estimated released energy: 3.2 x 10
10 joules (8.78 megawatt hours, equivalent to 7.56 tons of TNT)
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Data for the same earthquake reported by different agencies
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| Mag. | Depth | Location | Source |
| 3.8 | 3.4 km | 3.3 Km S of Fagradalsfjall, Iceland | IMO |
| 3.7 | 1 km | ICELAND REGION | EMSC |
User reports for this quake (5)
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Hafnarfjordur (25.7 km NE of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / very short
(reported through our app)
33.2 km NE of epicenter [Map] / Weak shaking (MMI III)
(reported through our app)
28.9 km NW of epicenter [Map] / Very weak shaking (MMI II) / single lateral shake / very short
(reported through our app)
34.6 km NNE of epicenter [Map] / Light shaking (MMI IV)
(reported through our app)
reykjavik / Weak shaking (MMI III) / single lateral shake / 2-5 s
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