Two volcanoes in Alaska are at risk of exploding with little to no warning. After lava flowed from the two volcanoes on Tuesday, authorities placed both locations on the second-highest alert levels.
The two volcanoes are named Pavlof and Cleveland. Both stratovolcanoes are located in the Aleutian island range, which is southwest of mainland Alaska. While both are active, though, Pavlof Volcano has been far more active than Cleveland. Since 1980, it's had eruptions recorded every few years and possesses a threat score of 95 for future eruptions.
These lava flows aren't necessarily worrisome. What does have officials concerned, though, is the possibility of explosive behavior. Cleveland in particular is at risk for sending massive clouds of ash swirling into the air about 20,000 feet above sea level. This could potentially cause air traffic delays.
Meanwhile, 40 miles southeast of Mexico City, Officials are preparing evacuation routes and shelters for thousands of people who live in the shadow of another volcano, Popocatepetl.
Popo, as the volcano is known, has displayed a "notable increase in activity levels" in the last few days, including tremors and explosive eruptions. The 17,887-foot volcano has been disgorging large towers of steam and ash since mid-April, but officials have become more concerned in recent days as activity has intensified.
Webcams have shown large chunks of molten rock spewing from the crater, and ash has rained down on the nearby city of Puebla. On Sunday, the National Center for Disaster Prevention elevated its warning level to Yellow Phase 3, the fifth stage of a seven-stage warning scale.
http://www.latimes.com/news/nationworld/world/la-fg-mexico-volcano-20130514,0,1994956.story






