Every week, Iceland has 150-400 earthquakes, most of these are exceedingly minor, although, if you should ever find yourself close to the Atlantic ridge, it might become dangerous. 
 

It is estimated that every 100-150 years, there will occur a tremendous and disastrous earthquake in Iceland. In 1912 an earthquake with a magnitude of 7.0ML that took place in the Southern Seismic Zone (A.K.A Reykjanes Fracture Zone) this area is 75 to 100 km wide, and situated in Southwestern Iceland. There was also a similar-sized earthquake in 1784, estimated at 7.1ML, this one occurred in Southern Iceland, which resulted in many homes being destroyed.
 

Scientists at the Icelandic Meteorological Office strongly believe that they will be able to predict one hour ahead of time when and where the next big earthquake will occur.
 

Most of the earthquakes are caused by tectonic plates and are rarely felt. Iceland’s volcanic eruptions, on the other hand, have dangerous effects upon the entire island. Skies turn dark, and ash “snows” down upon much of the country. 
 

Iceland actually receives a volcanic eruption almost every four to five years, and home to 130 volcanoes. some that are active and cause mayhem even to this day. The movement of the tectonic plates can disturb these volcanoes. In early April 2010, Eyjafjallajökull, a volcano that is partly covered by ice caps, erupted, its effects were disastrous enough to cause many European

countries to close down their entire air traffic for over a week.