ovsicori

Two Costa Rican volcanoes, Turrialba in Cartago province and Rincón de la Vieja in Guanacaste, began to show increased activity over the weekend.

A plume of vapor coming from Turrialba Volcano Thursday morning alarmed some Cartago residents, but experts say it was likely related to recent rains.

The Volcanological and Seismological Observatory of Costa Rica (OVSICORI) on Tuesday evening posted a video of a new eruption at Rincón de la Vieja Volcano, located in Guanacaste province.

Experts with the Volcanological and Seismological Observatory of Costa Rica on Thursday reported that Rincón de la Vieja volcano, located in Guanacaste province, increased its activity with vapor and explosions.

Turrialba Volcano launched ash approximately 1,000 meters into the air on Halloween afternoon.

Turrialba Volcano has been steaming -- literally -- after the attention Arenal Volcano got for releasing smoke-like vapor over the weekend.

A reported 4.6-magnitude earthquake rattled through the Central Valley at 11:51 a.m. on Thursday, and could be felt for approximately 15 seconds in downtown San José. The University of Costa Rica’s National Seismological Network (RSN) said the tremor originated five kilometers east of Naranjito de Aguirre, Quepos in Puntarenas.

A magnitude-4.6 earthquake, followed by a magnitude-2.8 earthquake, jolted residents of Cartago and San José provinces Saturday morning.

Experts from the Volcanological and Seismological Observatory of Costa Rica say activity has decreased at Turrialba since its peak from October to May, however gas and ash explosions similar to that recorded Saturday could still occur.

The strongest, a magnitude-4.2 degrees, was recorded at 8:50 p.m. with its epicenter located 9 kilometers northeast of San Rafael de Oreamuno.