Mount Rainier’s Threat to Local People
Volcanologist and Union of Concerned Scientists ambassador Jess Phoenix discussed her worries about Mount Rainier in an episode of CNN Original Series titled “Violent Earth With Liv Schreiber.” She said that she is really concerned about Mount Rainier since it presents a serious threat to the people that are close by. She claims that the ancient mudflows from previous eruptions of Mount Rainier, which are roughly 100 feet (30.5 meters) thick, are the basis upon which Tacoma and South Seattle are built.
US Geological Survey experts note Mount Rainier’s biggest risk lies in lahars—fast-moving mixes of water and volcanic debris. These can swiftly flood valleys after melting ice or snow during an eruption.
Seth Moran from USGS Cascades Volcano Observatory warns that Mount Rainier’s height and icy covering mean eruptions could rapidly melt ice, triggering large lahars. Such events could affect thousands living nearby.
About Lahars
Lahars are rapid debris flows. Colombia’s Nevado del Ruiz eruption in 1985 caused one of the deadliest lahars, killing over 23,000 people in Armero within hours.As reported by CNN, Bradley Pitcher from Columbia University warns Mount Rainier, with eight times more glaciers than Nevado del Ruiz, could experience a more catastrophic mudflow.
US Geological survey’s assessment
In 2018, USGS ranked Hawaii’s Kīlauea as the most hazardous US volcano due to its frequent eruptions and nearby population. Mount St. Helens ranked second, followed by Mount Rainier as the third most hazardous.
Historical incidents and risks
Mount Rainier has seen at least 11 major lahars in 6,000 years, with one 500 years ago, possibly from a landslide. A similar event could be catastrophic due to unstable rock areas.
Safety measures
In March, 45,000 students from multiple Washington school districts participated in the world’s largest lahar evacuation drill. Schools outside the danger zone either sheltered in place or evacuated to safe areas.
FAQs:
Q1. Why do volcanologists worry about Mount Rainier?
A1. Mount Rainier hasn’t erupted significantly in thousands of years but poses a serious threat due to potential lahars and its icy covering.
Q2. What are lahars?
A2. Lahars are fast-moving debris flows of water and volcanic material. They can quickly flood valleys after an eruption, endangering nearby communities.
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