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$Ash and volcanic smog, or so-called vog, rose up to 12,000 feet (3,657 meters) above Kilaueas crater and floated southwest, covering cars on Highway 11 with gray dust and sparking an \unhealthy air\ advisory in the community of Pahala, 18 miles (29 km) from the summit. (Photo: AP)$ World

Ash cloud from Hawaii volcano sparks red alert for aviation

An aviation red alert means a volcanic eruption is under way that could affect aviation by spewing ash into air routes.

16 May 2018 11:03 AM IST