Category Volcanic Ash

**ALERT RAISED TO ORANGE** Volcano Villarrica in Chile

Volcano Villarrica rumbles and spews lava in Chile Authorities have restricted access to the area within 5km of the crater and have put the area under an orange alert due to the volcano’s heightened unrest and increased likelihood of eruption…

USGS upgrades Aleutian volcano alert level to Yellow

Citing increased seismic intensity, the U.S. Geological Survey is upgrading the volcano alert level status for Semisopochnoi, an Aleutian Island volcano, to “advisory,” the agency said in a notice issued Wednesday morning.   Seismic activity at the Semisopochnoi volcano began…

Airport closed and evacuations as Turrialba Volcano erupts in Costa Rica

San Jose’s international airport was forced to close and several villages were evacuated after clouds of ash from the newly active Turrialba volcano reached the Costa Rican capital, authorities have said.   Flights were suspended because of poor visibility at…

Chile’s Villarrica volcano spews ash in renewed activity; Orange Alert Issued

The Villarrica volcano in southern Chile, which erupted on 3 March, has shown renewed activity.   Officials raised the alert in areas near the Villarrica to Orange, the second highest and cancelled classes for more than five thousand 500 pupils.…

**Aviation Red Alert**Large explosion, ash to 37,000 ft (11 km) altitude at Shiveluch volcano in Kamchatka, Russia

The volcano is in an intense phase of activity, characterized by strong explosions and partial collapses of the growing lava dome accompanied by tall ash plumes and pyroclastic flows.    An explosion this morning produced an ash plume that rose…