Aviation Red Alert Issued Due To Volcanic Ash Eruption At Semeru Volcano, Indonesia #RedAlert #AshEruption #SemeruVolcano #Indonesia

Courtesy of volcanodiscovery.com

https://tinyurl.com/ycgwbhmz

#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

https://tinyurl.com/rbcfyxc

#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

https://tinyurl.com/y3dp7wbu

#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

https://tinyurl.com/yxpua2nv

#AviationRedAlert Due To The Powerful #Eruption At #SinabungVolcano, #Ash To 16.7 km (55 000 feet), #Indonesia

Indonesia Raises Alert Level To 3 For Anak Krakatau Volcano, More Tsunamis Possible

High-impact eruption at Manam volcano, heavy ashfall blocking sunlight, P.N.G.

CODE RED ALERT!! Veniaminof Volcano in Alaska has been Erupting for hours!!

Red Alert Issued Due To Strong Eruption With Ash At Manam Volcano In Papua New Guinea

A relatively large explosive eruption occurred at the volcano yesterday, sending an ash plume to estimated 11 km (34,000 ft) altitude, the Darwin VAAC reported. The ash plume was drifting west over mainland Papua New Guinea and rapidly dissipated. 

 

The Aviation Color Code has been raised from Orange to Red. 

 

The eruption was likely one of the volcano’s frequent paroxysms involving tall lava fountains from the summit crater with associated lava flows and/or pyroclastic flows covering parts of the northeastern flanks. Thermal emissions from the volcano have been elevated recently, suggesting that there is abundant fresh lava arriving in the summit area. 

 

There are no reports of injuries or fatalities. 

 

Similar ash eruptions have been occurring in the past weeks, most notably on 24 Aug and 23 Sep. On the 24 Aug eruption, an explosive eruption produced a similar ash plume to approx. 15 km (50,000 feet) a.s.l. and lava flows that forced 2000 inhabitants of the small island to flee. 

 

According to a newspaper article, “islanders reported ash and other debris from the volcano was so thick that sunlight was totally blocked for a few hours.”

Courtesy of volcanodiscovery.com

https://tinyurl.com/ydybxpmj

Bali Volcano Eruption: Mount Agung Spews Volcanic Ash triggering CLOSURE of Airport