Moderate mag. 4.1 earthquake - 2.1 Km W of Keilir, Iceland, on Sunday, 28 Feb 2021 3:39 pm (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 4 days earlier.
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Moderate magnitude 4.1 earthquake at 8 km depth
28 Feb 15:49 UTC: First to report: IMO after 10 minutes.
28 Feb 15:57: Magnitude recalculated from 3.7 to 4.3. Hypocenter depth recalculated from 3.0 to 8.2 km (from 1.9 to 5.1 mi). Epicenter location corrected by 1.1 km (0.7 mi) towards SE.
28 Feb 16:05: Magnitude recalculated from 4.3 to 4.1.
28 Feb 15:57: Magnitude recalculated from 3.7 to 4.3. Hypocenter depth recalculated from 3.0 to 8.2 km (from 1.9 to 5.1 mi). Epicenter location corrected by 1.1 km (0.7 mi) towards SE.
28 Feb 16:05: Magnitude recalculated from 4.3 to 4.1.
Date & time: 28 Feb 2021 15:39:31 UTC -
Local time at epicenter: Sunday, 28 Feb 2021 3:39 pm (GMT +0)
Magnitude: 4.1
Depth: 8.2 km
Epicenter latitude / longitude: 63.935°N / 22.199°W
(Iceland)Nearest volcano: Krísuvík (5 km / 3 mi)
Nearby towns and cities:
10 km (6 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 (14 mi) SW of Garðabaer (pop: 11,400) --> See nearby quakes!
24 km (15 mi) SW of Kopavogur (pop: 31,700) --> See nearby quakes!
27 km (17 mi) SSW of Reykjavik (pop: 118,900) --> See nearby quakes!
27 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!
43 km (27 mi) S of Akranes (pop: 6,610) --> See nearby quakes!
50 km (31 mi) W of Hveragerdi (pop: 2,290) --> See nearby quakes!
Weather at epicenter at time of quake:
Scattered Clouds
2.5°C (37 F), humidity: 87%, wind: 14 m/s (27 kts) from SW
Primary data source: IMO (Icelandic Met Office)Scattered Clouds
2.5°C (37 F), humidity: 87%, wind: 14 m/s (27 kts) from SWEstimated released energy: 8.9 x 1010 joules (24.8 megawatt hours, equivalent to 21.3 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 |
| 4.1 | 8.2 km | 2.1 Km W of Keilir, Iceland | IMO |
| 3.7 | 3 km | ICELAND REGION | EMSC |
User reports for this quake (27)
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
16.4 km WNW of epicenter [Map] / Weak shaking (MMI III) / 5-10 s (reported through our app)
9.9 km WNW of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
17.9 km WNW of epicenter [Map] / Moderate shaking (MMI V) / rattling, vibrating / 1-2 s
Mosfellsbaer (34.4 km NE of epicenter) [Map] / not felt (reported through our app)
19.6 km NE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
26 km NE of epicenter [Map] / Light shaking (MMI IV)
20.2 km NE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
Reykjavík 108 Álftamýri 52 (26.6 km NNE of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
9.9 km WNW of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
26.5 km NNE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
18.6 km WNW of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
28.3 km NNE of epicenter [Map] / Very weak shaking (MMI II) / single vertical bump / 1-2 s (reported through our app)
43.5 km N of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
26.8 km NNE of epicenter [Map] / Very strong shaking (MMI VII) (reported through our app)
29.6 km NE of epicenter [Map] / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s
9.9 km WNW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
25.9 km NE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
10.8 km WNW of epicenter [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s (reported through our app)
26.2 km NNE of epicenter [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s
17.9 km WNW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
25.6 km NE of epicenter [Map] / Light shaking (MMI IV) / 2-5 s (reported through our app)
19.2 km WNW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
Reykjavík 105 (28 km NNE of epicenter) [Map] / Very weak shaking (MMI II) (reported through our app)
17.9 km WNW of epicenter [Map] / Light shaking (MMI IV) / single vertical bump / 1-2 s (reported through our app)
Reykjavik (26.6 km NNE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
108 Reykjavik / Light shaking (MMI IV) / single vertical bump / 2-5 s
Gardur / Very weak shaking (MMI II)
Earlier earthquakes in the same area
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