Volcanic ash concentration
Volcanic ash forecasts are only available from London VAAC for volcanoes erupting within London VAAC area.
The VAAC are the Volcanic Ash Advisory Centres who hold the responsibly for advising on international aviation. For more information go to Volcanic Ash Advisory Centres. The Volcanic Ash forecasts are displayed for 24 hours before being passed to the archive folder.
For previously issued forecasts, see the Volcanic Ash Concentration archive.