The latest projection from the Met Office for 6am tomorrow (May 24) shows the ash cloud over Scotland and Ireland, with air traffic agencies saying they are monitoring the situation, click thumbnail to enlarge.
This eruption comes a little over a year after ash from the Eyjafjallajokull volcano spread across Europe, causing huge disruption.
So if you are expecting to take a flight from the UK in the next couple of days here are some of the websites and Twitter accounts of organisations tracking the cloud, and ultimately deciding upon the viability of air travel.
The UK air traffic authority provides regular updates and is one of the key websites to keep an eye on.
Met Office (@metoffice)
It is the job of the Met Office to track the volcanic cloud and how weather patterns are affecting it through Europe's Volcanic Ash Advisory Centre, their ash cloud maps predicting its reach play a key role in determining which airports will close.
The European organisation overseeing safety in the air came to the fore during latest year's volcanic eruption, providing constant updates through its Twitter stream, and detailed information in press releases and .pdf documents on a regular basis.
Foreign and Commonwealth Office (@fcotravel)
The government department with responsibility for British travellers overseas, the F&O website and Twitter feed are useful resources.
And individual airline websites will be the best place to check for what you can do should your flight be delayed or cancelled.