April 26 , 2018. EN. Klyuchevskoy , Cerro Machin , Kirishimayama , Popocatepetl , Nevados de Chillan .
April 26 , 2018. Klyuchevskoy , Kamchatka : VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA). Issued: April 25 , 2018. Volcano:Klyuchevskoy (CAVW #300260) Current aviation colour code:YELLOW Previous aviation colour…