Articles tagged "alaska volcano"

shishaldin volcano july 23 2019 f

Shishaldin volcano alert levels raised, Alaska

The Alaska Volcano Observatory (AVO) raised the Aviation Color Code for Shishaldin volcano to ORANGE and the Alert Level to WATCH on October 17, 2019. Satellite observations indicated that a lava effusion event began on October 13 and is likely continuing. The...

October 18, 2019

veniaminof june 29 2019 f

Veniaminof volcano alerts raised, Alaska

The Alaska Volcano Observatory (AVO) raised alerts for Veniaminof volcano after pilot reports of steaming coincided with low-level tremor recorded at the volcano at 20:30 UTC (12:30 AKDT). These observations mark a departure from recent background activity - the...

August 02, 2019

shishaldin 2018 f

Increased seismicity, alerts raised for Shishaldin volcano, Alaska

The Alaska Volcano Observatory is raising the Aviation Color Code to YELLOW and the Alert Level to ADVISORY at Shishaldin Volcano, the observatory said 21:09 UTC on July 12, 2019. The last eruption of this volcano took place in 2015 (VEI 1). This change is based on...

July 12, 2019

semisopochnoi island may 2017 f

Increased seismicity, alerts raised at Semisopochnoi volcano, Aleutians

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...

July 05, 2019

iliamna landslide june 21 2019 f

Large landslide on the flanks of Iliamna volcano, Alaska

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....

June 27, 2019

bogoslof eruption may 28 2017

Powerful explosive eruption at Bogoslof, ash to 10.4 km (34 000 feet)

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...

June 12, 2017

bogoslof may 8 2017

Bogoslof erupts ash possibly as high as 13.7 km (45 000 feet), Alaska

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...

May 29, 2017

bogoslof may 2017

Powerful eruption at Bogoslof: ash to 10.4 km (34 000 ft), Aviation Color Code Red

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...

May 17, 2017

bogoslof volcano april 7 2017

Bogoslof volcano remains in an unpredictable condition, Alaska

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,...

April 18, 2017

large explosive eruption bogoslof march 8 2017

Large explosive eruption ejects ash 10.6 km (35 000 feet) a.s.l., Bogoslof

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,...

March 08, 2017

bogoslof eruption february 20 2017

Explosive eruption at Bogoslof volcano, Alaska

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...

February 20, 2017

takawangha volcano energetic earthquake swarm january 2017

Energetic earthquake swarm under Takawangha volcano, Alaska

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...

January 25, 2017

bogoslof eruption terra modis january 18 2017

Bogoslof ejects ash more than 9.5 km (31 000 feet) a.s.l., Alaska

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...

January 19, 2017


Cleveland volcano erupts

Cleveland Volcano, located on uninhabited Chuginadak Island in the Aleutians, has begun building a lava dome. An Alaska volcano has begun erupting, but it is not yet posing a serious hazard to populations or aviation in the region.The eruption was described as a

August 11, 2011


Alaskan Cleveland volcano eruption warning upgraded

The lava dome producing eruption at Cleveland volcano, first observed on July 29, is continuing. AVO has received no new observations or information about activity at the summit since August 2 and the last thermal anomaly observed was this morning. Earlier this week,

August 06, 2011