Mount St. Helens had a volcanic explosivity index (VEI) of 5 during its eruption on May 18, 1980. This VEI level indicates a significant explosive eruption that released a large amount of volcanic ash and caused widespread devastation in the surrounding area.
Mount Pelee's magnitude refers to the Volcanic Explosivity Index (VEI) of its 1902 eruption, which was estimated to be a 4. This VEI level indicates a significant explosive eruption that can cause widespread destruction and has a global impact.
The VEI (Volcano Explosivity Index) rates volcanic eruptions based on the volume of ejected material, the height of the eruption plume, and the time duration of the event. The scale runs from 0 (low volume, non-explosive lava flow) to 8 (mega-colossal volcanic explosion, accompanied by seismic events and/or tsunamis). E.g. Mount St. Helens, 1980, had a VEI of 5. Mount Mazama (an exploded volcano that now forms Crater Lake) erupting around 5600 BC, had a VEI of 7.
The 1951 eruption of Mount Lamington in Papua New Guinea was estimated to have a Volcanic Explosivity Index (VEI) of 4. The Richter Scale is not typically used to measure the size of volcanic eruptions; instead, the VEI is commonly used to classify and compare the explosiveness of volcanic eruptions.
No. "Category 5" is a rating on a system, used for hurricanes. Mount Pinatubo is a volcano. Volcanoes do not have a rating system but eruptions do: Volcanic Explosivity Index, which ranges from VEI 0 to VEI 8. On this scale the 1991 eruption of Mount Pinatubo was a VEI 6.
The VEI (Volcanic Explosivity Index) score for the eruption of Mount Vesuvius in 79 AD is estimated to be around 5 or 6, which indicates a significant explosive eruption. This eruption led to the destruction of Pompeii and Herculaneum, burying them in volcanic ash and pumice.
Wikipedia lists its explosive index as 5. Read below for more details about the Volcanic Explosivity Index.
VEI stands for Volcanic Explosivity Index, which is a scale used to measure the explosiveness of volcanic eruptions based on factors such as eruption cloud height, volume of material expelled, and duration of the eruption. It ranges from 0 (non-explosive) to 8 (mega-colossal).
The Volcanic Explosivity Index (VEI) of Eldfell volcano, located on Heimaey Island in Iceland, is estimated to be 2. Eldfell last erupted in 1973, producing a moderate-sized explosive eruption that resulted in the evacuation of the island's inhabitants.
Mount Pinatubo's eruption in 1991 had a Volcanic Explosivity Index (VEI) of 6. This scale measures the magnitude of volcanic eruptions based on factors like volume of erupted material, height of eruption column, and duration of eruption. A VEI 6 is classified as a "colossal" eruption.
The last eruption of Mount Kilauea in 2018 had a VEI (Volcanic Explosivity Index) rating of 2. This means it was considered to be a moderate, non-explosive eruption.
Volcanoes are measured on the volcano explosivity index. See the link below for more information.