The eruption began at around 10 p.m. local time, following an earthquake at around 9 p.m.
The meteorological office reported that the eruption is visible on webcams and appears to be located close to Hagafell, about 3 kilometers north of the town of Grindavík.
Of note, the Svartsengi geothermal power plant is very close to the eruption and is being run remotely right now.
If you are traveling to Europe in the near future keep an eye on your reservations in case this situation turns out to be like the 2010 eruptions of Eyjafjallajökull.