#Shishaldin #Volcano cloud reaches 20,000 ft; Aviation #RedAlert in effect, #Alaska
Courtesy Aaron Merculieff
The National Weather Service issued a SIGMET aircraft safety alert as the ash plume from Shishaldin reached as high as 20,000 feet in elevation and extended up to 90 miles eastward from the volcano.
A lava flow is visible from the northeast flank of the volcano, with a large steam plume moving to the south-southeast visible in webcam imagery on Saturday.
A volcanic cloud is reported to extend up to 90 miles east from Shishaldin, located on Unimak Island in the eastern Aleutian Islands.
According to the U.S. Geological Survey, Shishaldin is one of the most actives volcanoes in the Aleutian volcanic arc — with 24 confirmed eruptions since 1775.
In April and May of 1999, an eruption at Shishaldin generated an ash column reaching 45,000 ft. about sea level.
Courtesy of ktuu.com
#RedAlert Issued – #Explosive #Ash Activity At #EtnaVolcano In #Italy
Aviation Red Alert Issued – Explosive Ash Activity At Etna Volcano In Italy
Courtesy of volcanodiscovery.com
#RedAlert #MajorEruption – Major #AshClouds Drifting East And South From #UlawunVolcano In #PapuaNewGuinea
While it is not only night over Papua New Guinea now, a vast area around the volcano is now likely to be shredded in darkness caused by ash from the eruption.
It is unclear whether the activity at the volcano still continues or has subsided or ended. However, the ash plume has been split in two major portions by winds blowing in different directions at different altitudes:
– the highest portion at 63,000 ft (20 km, flight level 630) is rapidly drifting east and already at more than 500 km distance from the volcano.
– the “lower” part of the plume, up to 55,000 ft (17 km, flight level 550) altitude is instead spreading and drifting more slowly to the south.
The aviation color code is red and all aircraft should avoid the affected areas in a wide distance
Courtesy of volcanodiscovery.com
Red Alert Issued Due To Strong Eruption With Ash At Manam Volcano In Papua New Guinea

Comments