"The constant seismic rumblings were spotted by the Pacific Northwest Seismic Network (PNSN), where seismometers on Mount Rainier recorded three straight days of nearly nonstop, high-energy seismic signals across the west flank of the volcano. Unlike the seismic activity tied to major earthquakes, the patterns being seen in Washington look more like a volcanic tremor, a type of nonstop hum or roar that begins when magma, hot water, and gas moves around inside a volcano."
"Geologists will be watching to key signs of this volcanic tremor escalating, including its severity increasing in the coming days, actual earthquakes starting inside the volcano, and the ground at Mount Rainier beginning to swell. When this volcano eventually explodes, it won't be scorching lava flows or choking clouds of ash that threaten Americans, but the lahars: violent, fast-moving mudflows that can tear across entire communities in mere minutes."
Mount Rainier has produced nearly nonstop seismic tremor activity for several days, with seismometers recording continuous high-energy signals across its west flank. The tremor consists of thousands of tiny vibrations caused by movements of magma, hot water, and gas beneath the volcano. Geologists note that tremor does not guarantee immediate eruption but signals that volcanic activity could escalate toward a critical level. Scientists will watch for signs of escalation such as increasing tremor intensity, onset of internal earthquakes, and ground swelling. An eventual eruption would pose greatest danger through lahars—fast-moving, destructive mudflows capable of crushing or burying communities downstream.
Read at Mail Online
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