Exactly 24 hours after volcanic activity ceased Monday, the Turrialba volcano blasted a column of ash 3,000 meters into the sky, nearly 10,000 feet. The Red Sismológica Nacional said the eruption lasted 20 minutes and had five pulses of activity. There was ash accompanied by seismic activity in the mountain, the Red said.
The eruption also threw boulders inside and outside the crater, the report said.
The wind at the time, 9:45 p.m., continued to be to the west putting ash up to some 50 kilometers in areas where ashfalls have become common. The Instituto Meteorológico Nacional said that the major communities affected are Finca Silvia, San José, Coronado, Guadalupe, Heredia, Alajuela, Cartago and Desamparados.
The Observatorio Vulcanológico y Sismológico at Universidad Nacional said that the column of ash reached 3,500 meters, nearly 11,500 feet. The volcano summit is 3,340 meters high, some 10,958 feet, so the ash column reached about 4.2 mile above sea level.
The Observatorio also reported that an earthquake took place about three kilometers below the crater at 2:17 p.m. Tuesday.
A check of the Observatorio’s camera monitoring the crater at 12:20 a.m. today showed thick, black ash and vapor still pouring into the sky.