Açores: CIVISA Walks the Faial-Pico Channel Volcanic Alert From V1 Back Down to V0 After a Month of Submarine Tremors at the Cachorro System — Quake Swarm From 1 April Triggered the Alert; Decline Brings Reference Levels Back
CIVISA has lowered the Faial-Pico Channel volcanic alert from V1 back to V0 after a month-long quake swarm at the Cachorro Submarine Volcanic System eased. The alert had been raised in early April; events ran from 20km depth to near-surface.
