It is unlikely that the imminent volcanic eruption will lead to a disaster caused by toxic gases affecting the whole of northern Europe, as has happened in the past. Though there may be manageable and short-term local effects from toxic fumes, Icelanders have plenty of experience with volcanic outbreaks and are taking necessary precautions, including the evacuation of Grindavík.
While there is still a small chance that the magma will not break through to the surface and cause an eruption, in the event of an outburst, the local impact is unpredictable. Recent seismic activity indicates that a huge magma pocket has formed directly beneath Grindavík, which could have devastating local consequences in the event of an eruption. Icelanders must prepare for the worst and hope for the best.