Volcanic Ash Advisory Centre (VAAC)

The London VAAC is one of 9 Volcanic Ash Advisory Centres worldwide, and has specialist forecasters who produce volcanic ash advisories and guidance products using a combination of volcano data; satellite-based, ground-based and aircraft observations; weather forecast models and dispersion models. The volcanic ash forecasts are provided to the standards and tolerances set by the regulator, and support decision-making by the CAA as the lead agency, NATS and airlines.

At the end of 2024 a new quantitative volcanic ash provision will be introduced.

We provide a reciprocal back-up facility with Toulouse VAAC, operated by Météo-France.

• Issued Volcanic Ash Advisories (VAA/VAG)
• Concentration charts
• Annotated satellite images
• Toulouse VAAC Issued Volcanic Ash Advisories (VAA/VAG)