The Alaska Volcano Observatory (AVO) has raised the Aviation Color Code from Yellow to Orange and the Alert Level from Advisory to Watch at Shishaldin volcano on July 24, 2019. The last eruption of this volcano took place in 2015 (VEI 1). Field crews reported an…
Elevated seismicity that began under Semisopochnoi volcano, Alaska on July 17, 2019, increased overnight and was followed by a stronger tremor signal recorded at 07:39 UTC, July 18. In addition, an infrasound signal was produced on an infrasound array located 260 km…
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…
Temperatures in Anchorage, Alaska rose up to 32 °C (90 °F) on July 4, 2019, breaking the previous all-time record temperature for the city of 29.4 °C (85 °F) set in 1969. The city also broke its daily July 4 record of 25 °C (77 °F) set in…
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 small steam explosion at 05:40 UTC on June 2, 2019 (21:40 AKDT June 1) was detected at Great Sitkin volcano in local seismic data, the Alaska Volcano Observatory reports. No corresponding signal was seen in regional infrasound data or cloudy satellite…
A strong and shallow earthquake registered by the USGS as M6.1 hit off the coast of Amatignak Island, Alaska at 08:45 UTC on May 23, 2019. The agency is reporting a depth of 27.8 km (17.3 miles). EMSC is reporting M6.1 at a depth of 56 km (34.8 miles). The epicenter…
Low-frequency seismic tremor and vigorous steam plume have been observed at Pavlof volcano, Alaska over the past 2 days, forcing the Alaska Volcano Observatory (AVO) to raise the Aviation Color Code and Alert Level to Yellow/Advisory on May 15, 2019. The…
A strong and shallow earthquake registered by the USGS as M6.5 hit Rat Island, Aleutian Islands, Alaska at 21:35 UTC on April 2, 2019. The agency is reporting a depth of 19.1 km (11.8 miles). EMSC is reporting M6.5 at a depth of 10 km (6.2 miles). The quake was…
