Due to an increase in seismicity above background levels over at least the last 8 hours AVO is raising the Aviation Color Code to YELLOW and Alert Level to ADVISORY at Semisopochnoi. No explosive activity has been detected on the Adak infrasound array and clouds…
A very large landslide took place on the flanks of Iliamna volcano, Alaska at about 00:05 UTC on June 21, 2019. The slide is about 6 km (3.7 miles) in length and appears to be originating near the summit. The debris field is approximately 3.2+ km (2+ miles) wide….
A powerful explosive eruption took place at Bogoslof volcano on June 10, 2017, forcing officials to raise the Aviation Color Code to Red and Volcano Alert Level to Warning. It seems the eruption may have destroyed the lava dome emplaced last week. The eruption…
A powerful eruption took place at Alaska's Bogoslof volcano on May 28, 2017. It was the second powerful eruption after more than months of relative calm. Aviation Color Code was raised to Red. The Alaska Volcano Observatory (AVO) reported a powerful explosive…
A powerful explosive eruption started at Bogoslof volcano, Alaska at 06:32 UTC on May 17, 2017, and lasted approximately 73 minutes. The Aviation Color Code was raised from Orange to Red. This is the first major eruption at Bogoslof volcano since March 8, 2017. A…
Bogoslof volcano remains at a heightened state of unrest and in an unpredictable condition, the Alaska Volcano Observatory (AVO) reports. No significant volcanic activity was observed at the volcano in seismic, infrasound data or satellite data over the past day,…
A large explosive eruption began at Bogoslof volcano, Alaska at 07:36 UTC on March 8, 2017 and resulted in approximately 3 hours of significant ash emissions. The eruption comes after two weeks of relative calm. The intensity of activity as observed in seismic,…
A significant explosive eruption began at Bogoslof stratovolcano at 02:08 UTC on February 20, 2017, and lasted about 37 minutes. Satellite images following the activity showed a volcanic plume extending about 160 km (100 miles) to the southeast over Unalaska Island…
An energetic earthquake swarm was detected under Alaskan Takawangha volcano on January 23, 2017, prompting the Alaska Volcano Observatory to raise Aviation Color Code to Yellow and Alert Level to Advisory on January 24. The last known eruption of this volcano took…
Alaskan Bogoslof volcano erupted again at about 22:20 UTC on January 18, 2017, following an approximately 20-minute-long increase in seismic activity. The cloud it ejected is presumably more ash-rich than others in current eruptive sequence. Alaska Volcano…
