A new seismic station was installed in August 2025 on Burley Mountain, near Mount Rainier. After a swarm of earthquakes ...

Seismometers at Mount Rainier recorded a 72-hour burst of underground vibrations starting November 15, 2025, around 5 a.m. ET, relevant to the Seattle–Tacoma area. The Mount Rainier tremor follows ...

Ice buildup on an antenna at Mount Rainier has led to false reports of increased tremor activity, according to the Pacific Northwest Seismic Network (PNSN). The signal is actually radio interference ...

A Graham farm helped detect Mount Rainier's largest earthquake swarm. It hosts one of about 650 seismic stations operated by the Pacific Northwest Seismic Network. The PNSN relies on public and ...

Mount Rainier, the active stratovolcano that experienced an unusual but benign swarm of tiny earthquakes this past summer, isn’t suddenly showing seismic-tremor activity despite a recent news report ...

The earthquake was centered about 13 miles from Packwood, which is nearly 80 miles southeast from Olympia. The U.S. Geological Survey reports it was a shallow quake, at just 2.2 kilometers deep. The ...

No, there was no “eruption threat” or sudden seismic tremor activity at Mount Rainier. But there is an eruption of backlash for an article that stoked fears with some faulty reporting. If you were ...

SEATTLE (AP) — Officials are tracking the largest swarm of earthquakes in more than 15 years on Washington’s Mount Rainier but say there is no indication that the cluster of quakes is cause for ...

Outdoors at a Graham farm and enclosed within a small padlocked gate for protection from meddling cattle, an antenna mast roughly 12 feet tall stands behind a weathered equipment-cabinet and a silver ...