What was the eruption of Mount St. Helens in 1980?

May 24, 2024 ... Hunga Tonga-Hunga Ha'apai eruption triggered widespread deadly and damaging tsunami waves. A damaged boat washed up into the middle of a field ... IVESPA is a new observational database of independent eruption source parameters. It contains all parameters required to validate explosive eruptive column ... Mar 21, 2025 ... While an eruption is not guaranteed, it is prudent to prepare. Mount Spurr previously erupted in 1953 and 1992. Based on previous eruptions, ... Volcanic eruptions can be explosive, sending ash, gas and lava high up into the atmosphere, or the magma can form lava flows, known as effusive eruptions. About Iceland's Latest Volcanic Activity ... The most recent eruption began on 1 April 2025 at Sundhnúksgígar, a row of craters in southwest Iceland. Soon after ... Nov 7, 2023 ... The Community Network for Volcanic Eruption Response (CONVERSE) created scenario exercises centered around a hypothetical volcanic crisis. Lightning is frequently observed in the eruption columns of large volcanoes, but it is rare in Hawaiian eruptions. Jun 19, 2020 ... The volcanic ash was electrically conductive which meant it could cause thunder and lightning, or St Elmo's Fire – an effect where metal parts ... Mar 31, 2025 ... During a volcanic eruption, lava and other debris can flow at speeds of up to 100 mph, destroying everything in their path. Volcanic ash can ... May 29, 2024 ... Volcanic eruption in Iceland spews lava over 160 feet; famed Blue Lagoon evacuated. Grindavík sits roughly 30 miles south of Iceland's capital ...