Costa Rica’s Turrialba volcano alert status raised to yellow: authorities say an eruption could be imminent

May 21, 2012COSTA RICA Costa Rica’s National Seismological Network has upgraded the color threat level to yellow of Turrialba Volcano, in the province of Cartago east of the capital. A statement issued by Raúl Mora-Amador, coordinator of Seismology, Volcanology and Geophysical Exploration at the University of Costa Rica, indicates a threat level of yellow means that the National Seismological Network believes an eruption is “probable” in a matter of days, weeks or a few months. The upgrade in the threat level is due to “important changes in seismic activity of Volcano Turrialba associated with the movement of fluids, gas and magma beneath the surface, different from that observed in past years,” Mora-Amador’s statement says. Temperatures around some fumaroles on the volcano have risen to as much as 800° Celsius, accompanied by eruptions of ash. High-temperature emissions of volcanic gases including sulfur dioxide have increased, causing incandescence in some of the fumaroles, Mora-Amador said, adding that the internal wall of the active crater is very weak due to hydrothermal changes in the volcano. Mora-Amador indicated this could mean a major eruption could jettison material into the atmosphere. Turrialba is the only volcano in the country currently with a yellow threat-level indicator. An upgrade to red would mean an eruption is imminent. –Tico Times
Turrialba erupted in January 2012
This entry was posted in Earth Changes, Earth Watch, Earthquake Omens?, Environmental Threat, High-risk potential hazard zone, Potential Earthchange hotspot, Seismic tremors, Time - Event Acceleration, Volcanic Eruption, Volcano Watch. Bookmark the permalink.

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