When volcanoes bring rain?

I feel fascinated by volcanoes and I think that’s quite obvious, but there’s also room for other natural phenomena, like weather. In Spain, my home, volcanoes are rare. We do have a ~10,000-year-old monogenetic volcanic fissure in northern Spain, part of the Catalan Volcanic Field, a cluster of weak alkaline volcanic fields that have been…

Aniakchak Caldera

The Aleutian volcanic awakening

Recently, Mjf and Tallis Rockwell commented in the café that several volcanoes in the Aleutians were undergoing unrest. After some thought, I realized that the Aleutians are within the United States territory, in Alaska, and that means they are very well monitored, and that this data is accessible. So I decided to dive into it.…

Okmok versus the Roman republic

Okmok is a known hazard. The volcano occupies its own half of Umnak, an isolated part of the Aleutian islands. Okmok is possibly the most active of the 40-odd Aleutian volcanoes. Over the past 8600 years it has produced over 50 ash layers from separate explosions, and minor eruptions happen every other decade. AVO has…