Klyuchevskaya Sopka volcano spewing ash clouds 33,000 feet high

At 15,381 feet in height or 4688 meters Klyuchevskaya Sopka volcano on the Kamchatka Peninsula of Russia is spewing out gigantic clouds of ash over 30,000 feet into the atmosphere. Both Japan and Alaska are the nearest developed areas near to this event so likely their air and businesses will likely be affected the most.

Russian volcanoes spew giant ash cloud, divert flights

Begin quote from news article:
MOSCOW – Two volcanoes erupted Thursday on Russia's far-eastern Kamchatka Peninsula, tossing massive ash clouds miles (kilometers) into the air, forcing flights to divert and blanketing one town with thick, heavy ash.
The Klyuchevskaya Sopka, Eurasia's highest active volcano, exploded along with the Shiveluch volcano, 45 miles (70 kilometers) to the northeast, the Russian Emergency Situations Ministry's branch in Kamchatka said, adding that flights in the area had to change course.
Ash clouds from the remote volcanoes billowed up to 33,000 feet (10 kilometers) and were spreading east across the Pacific Ocean, vulcanologist Sergei Senyukov told Rossiya 24 television. Streams of lava flowed down the slopes of Shiveluch.
The U.S. Federal Aviation Administration on Thursday issued a notice to pilots that they should remain alert for possible ash clouds, saying emissions have "intermittently complicated air travel" in the area of the Kamchatkan Peninsula.
"Any air carriers, including foreign air carriers, that observe or experience any difficulties resulting from an encounter with volcanic ash, please notify air traffic control immediately," the notice said.
Several pilots have reported seeing ash clouds in the Alaskan region, FAA spokeswoman Laura Brown said. However, the ash has been below 25,000 feet, while planes are assigned altitudes above that level so there was no difficulty, she said. Thus far FAA hasn't issued any flight restrictions due to ash, she said. end quote.