Volcanic tremors began at the Apoyeque Volcano after a magnitude 7.6 earthquake hit neighboring Costa Rica on Wednesday.
The volcano, just 6 miles (10 km) northwest of Managua, was calm on Friday, but officials continued monitoring it for volcanic tremors, said a release from the Nicaraguan Institute of Territorial Studies (INETER).
The agency registered 21 low-intensity volcano-related tremors between Thursday afternoon and Friday morning, prompting the government to issue a green advisory alert.
Seismic activity near the volcano “decreased Friday morning, but it doesn’t mean that it has disappeared,” INETER Geophysics Director Angélica Muñoz told reporters.
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“The last eruption of the volcano was in 50 B.C,” says the extinction protocol. “The volcano is capable of VEI 6 stage eruptions.”