Get our newsletter!
Check out our volcano tours on!
Volcanoes & Earthquakes - new app for Android
Guaranteed tours
8-16 May 2021: From Stromboli to Etna - Sicila and Eolian Islands (Italy)
: spaces available / : guaranteed / : few spaces left / : booked out
Interactive map of latest earthquakes and active volcanoes in the world

Light mag. 4.6 earthquake - 2.4 km WSW of Fagradalsfjall (Iceland) on Monday, 20 July 2020

This quake was likely an aftershock of the 4.6 quake: 0.3 km SW of Fagradalsfjall (Iceland), 19 Jul 2020 23:36, which had occurred 6 hours earlier.
Light mag. 4.6 earthquake  - 2.4 km WSW of Fagradalsfjall (Iceland) on Monday, 20 July 2020
20 Jul 05:58 UTC: First to report: IMO after 12 minutes.
Jul 20 06:02: Magnitude recalculated from 3.9 to 4.0.
Hypocenter depth recalculated from 5.8 to 11.1 km.
Jul 20 06:06: Magnitude recalculated from 4.0 to 4.6.
Hypocenter depth recalculated from 11.1 to 5.8 km.
Date & time: Monday, 20 July 2020 05:46 UTC
Magnitude: 4.6
Depth: 5.8 km
Epicenter latitude / longitude: 63.896°N / 22.322°W (Iceland)
Nearest volcano: Reykjanes (9 km / 6 mi)
Nearby towns and cities:
9 km (5 mi) NE of Grindavík (pop: 2,900)
10 km (6 mi) SE of Vogar (pop: 1000)
16 km (10 mi) SE of Reykjanesbær (pop: 2,000)
27 km (17 mi) SW of Hafnarfjörður (pop: 26,800)
31 km (19 mi) SW of Kópavogur (pop: 31,700)
34 km (21 mi) SW of Reykjavík (pop: 118,900)
Primary data source: IMO
Estimated released energy: 5 x 1011 joules (139 megawatt hours, equivalent to 120 tons of TNT) [learn more]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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.
TimeMag. / DepthLocationSource
Mon, 20 Jul 05:46 UTCM 4.6 / 5.8 km2.4 km WSW of Fagradalsfjall (Iceland)IMO
Mon, 20 Jul 05:46 UTCM 3.9 / 6 kmIceland RegionEMSC
Mon, 20 Jul 05:46 UTCM 4.2 / 10 km IcelandUSGS

User reports for this quake (6)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
15.9 km NW of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
Seltjarnarnes (32.9 km NNE of epicenter) [Map] / Very weak shaking (MMI II) (reported through our app)
14.5 km NW of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
Krummahólar / Moderate shaking (MMI V) : I was awake, and this one felt really weird, like a sudden short 'explosive' wave rather than some rumbling. This is while living in Hólar on a 6th floor, I literally felt a sudden wave that cracked first the window (facing to Rvk) and a fraction afterwards it cracked the door behind me, but left with almost no more noise or small 'echo' shakes as the next one did (4'3 at 6am). Excuse the lack of technical words :)
Reykjavikp / Very weak shaking (MMI II)
Reykjavik / Light shaking (MMI IV)

Earlier earthquakes in the same area

Light mag. 4.6 earthquake - 2.4 km WSW of Fagradalsfjall (Iceland) on Monday, 20 July 2020

More on VolcanoDiscovery

Why is there advertising on this site?

Support us!

Maintaining the website and our free apps is a time- and cost-intensive effort.
If you find the information useful and would like to support our team to develop further features and get the upgraded ad-free version, consider making a donation (PayPal or Online cc payment).
Planned features:
  • Weather reports
  • Tsunami alerts
  • Design upgrades
Thanks to your past donations, these features have been added recently:
  • Earthquake archive back to 1900
  • Additional data sources
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us.