Moderate mag. 4.2 earthquake - 0.7 Km W of Keilir, Iceland, on Sunday, 28 Feb 2021 4:29 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 4.2 earthquake at 4 km depth
28 Feb 16:37 UTC: First to report: IMO after 7 minutes.
28 Feb 16:45: Magnitude recalculated from 3.8 to 3.9. Hypocenter depth recalculated from 4.6 to 4.1 km (from 2.9 to 2.5 mi). Epicenter location corrected by 1.2 km (0.7 mi) towards SE.
28 Feb 16:49: Magnitude recalculated from 3.9 to 4.4.
28 Feb 16:57: Magnitude recalculated from 4.4 to 4.2.
28 Feb 16:45: Magnitude recalculated from 3.8 to 3.9. Hypocenter depth recalculated from 4.6 to 4.1 km (from 2.9 to 2.5 mi). Epicenter location corrected by 1.2 km (0.7 mi) towards SE.
28 Feb 16:49: Magnitude recalculated from 3.9 to 4.4.
28 Feb 16:57: Magnitude recalculated from 4.4 to 4.2.
Date & time: 28 Feb 2021 16:29:56 UTC -
Local time at epicenter: Sunday, 28 Feb 2021 4:29 pm (GMT +0)
Magnitude: 4.2
Depth: 4.1 km
Epicenter latitude / longitude: 63.942°N / 22.186°W
(Iceland)Nearest volcano: Krísuvík (4 km / 2 mi)
Nearby towns and cities:
11 km (7 mi) ESE of Vogar (pop: 1,030) --> See nearby quakes!
17 km (11 mi) NE of Grindavik (pop: 2,860) --> See nearby quakes!
18 km (11 mi) SW of Hafnarfjordur (pop: 26,800) --> See nearby quakes!
21 km (13 mi) SW of Garðabaer (pop: 11,400) --> See nearby quakes!
23 km (14 mi) SW of Kopavogur (pop: 31,700) --> See nearby quakes!
26 km (16 mi) SSW of Reykjavik (pop: 118,900) --> See nearby quakes!
28 km (17 mi) ESE of Sangerdhi (pop: 1,550) --> See nearby quakes!
34 km (21 mi) SW of Mosfellsbaer (pop: 8,650) --> See nearby quakes!
43 km (26 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:
Scattered Clouds
3.5°C (38 F), humidity: 70%, wind: 16 m/s (32 kts) from SW
Primary data source: IMO (Icelandic Met Office)Scattered Clouds
3.5°C (38 F), humidity: 70%, wind: 16 m/s (32 kts) from SWEstimated released energy: 1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 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 |
| 4.2 | 4.1 km | 0.7 Km W of Keilir, Iceland | IMO |
| 3.8 | 5 km | ICELAND REGION | EMSC |
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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10.1 km WNW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
22.6 km NE of epicenter [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
25.6 km NNE of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
19.4 km WNW of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
16.9 km NE of epicenter [Map] / Moderate shaking (MMI V) / single vertical bump / 1-2 s (reported through our app)
19.2 km NE of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
25.2 km NNE of epicenter [Map] / Moderate shaking (MMI V)
25.2 km NNE of epicenter [Map] / Light shaking (MMI IV) / vertical swinging (up and down) / 1-2 s
25.2 km NNE of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
26 km NNE of epicenter [Map] / Moderate shaking (MMI V) / single lateral shake / 2-5 s
Sandgerdi (27.1 km WNW of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
10.1 km WNW of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
Airport Keflavík (22.6 km WNW of epicenter) [Map] / Very weak shaking (MMI II) / single vertical bump / 1-2 s (reported through our app)
26.1 km NE of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
25.6 km NNE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
25.7 km NNE of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
25.5 km NE of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
19 km WNW of epicenter [Map] / Very weak shaking (MMI II) (reported through our app)
10.1 km WNW of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
25.3 km NNE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
18.3 km W of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
26.4 km NNE of epicenter [Map] / Light shaking (MMI IV) / 1-2 s
23.4 km NE of epicenter [Map] / Light shaking (MMI IV) / rattling, vibrating / 1-2 s (reported through our app)
Reykjavik (25.6 km NNE of epicenter) [Map] / Light shaking (MMI IV) / vertical swinging (up and down) / 2-5 s (reported through our app)
22.6 km NE of epicenter [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
19.5 km WNW of epicenter [Map] / Very weak shaking (MMI II) (reported through our app)
25.5 km NNE of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
Reykjavík 109 (23.7 km NE of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
42.6 km N of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
Reykjavík 105 (27 km NNE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
18.3 km W of epicenter [Map] / Light shaking (MMI IV) / single lateral shake / 2-5 s (reported through our app)
26.1 km NNE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
25.2 km NE of epicenter [Map] / Weak shaking (MMI III) / 2-5 s (reported through our app)
26.7 km NE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
Reykjavík (22.7 km NNE of epicenter) [Map] / Moderate shaking (MMI V) / 2-5 s (reported through our app)
18.6 km NE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
Reykjavík / Light shaking (MMI IV) / single lateral shake / very short : I was outside, next to a full height window of a building
Reykjavík / Light shaking (MMI IV) / single lateral shake / 2-5 s
Reykjavik / Light shaking (MMI IV) / rattling, vibrating
Reykjavik 101 / Light shaking (MMI IV) / very short
Kópavogur / Weak shaking (MMI III)
Breiðholt, Reykjavík / Light shaking (MMI IV)
Reykjavík / Moderate shaking (MMI V) / rattling, vibrating / 2-5 s
Reykjavík 105 / Light shaking (MMI IV) / both vertical and horizontal swinging / 2-5 s
108 Reykjavik / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Gardur / Weak shaking (MMI III)
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