Explosions And ‘Vog’ From Hawaii Volcano Spark Red Alert For Aviation
Ash and volcanic smog, or vog, as it is called, rose to 12,000 feet (3,657 meters) above Kilauea’s crater and floated southwest, showering cars on Highway 11 with gray dust and prompting an “unhealthy air†advisory in the community of Pahala, 18 miles (29 km) from the summit.
Article source: https://www.huffingtonpost.com/entry/hawaii-volcano-vog-red-alert-aviation_us_5afbe7dae4b0779345d43ca7