COMMENT: Dear Martin, You might find this interesting. Today the Taal volcano in Luzon, Philippines, erupted in a violent way sending an ash plume as high as 16 km (55.000 ft). The last time this volcano erupted was in 1977. This is 43 years ago which equals to 5*8.6. The low solar activity seems to … Continue reading Taal Volcano Erupts in Philippines