Here's a little history: By the 1880s, Norwegians were arriving in the Pacific Northwest in noticeable numbers. By 1910, more than 7,000 Norwegians lived and worked in the region. They lived all over King County but especially in Ballard...

At 8:32 a.m. PDT, Mount St. Helens, a volcanic peak in southwestern Washington, suffers a massive eruption, killing 57 people and devastating some 210 square miles of wilderness.

Called Louwala-Clough, or “the Smoking Mountain,” by Native Americans, Mount St. Helens is located in the Cascade Range and stood 9,680 feet before its eruption. The volcano has...

Happy Norwegian Independence Day!

Norwegian Constitution Day is the official National Day of Norway, celebrated...

The Shake Alert System was first tested by the PNSN in 2015, and it was formally introduced in Washington State on May 4, 2021.

The technology will alert seismic stations monitored by the PNSN in real-time of any approaching earthquake movement close to the epicenter as the ground starts to tremble. This will give us more time to Drop, Cover, and Hold in the case of an earthquake.

Sound Seismic's own Leif Jackson will be teaching a 2 hour class at the Phinney Neighborhood Association on Tuesday, February 12th.  It's only $25 ($20 for PNA members).  Click on the link to register!

With the tragic explosion of Volcán de Fuego in Guatemala and Kilauea's ongoing rampage on Hawaii's Big Island, the emoji for volcanic eruptions has received a lot of attention on Twitter and other social media in recent months. Emojis are a quick way to convey the essence of tornadoes, cyclones, and tsunamis, among other natural disasters.

However, there has never been a common representation of the natural catastrophe—earthquakes—that poses a threat to a third of the world's population.

On Friday, the Cascadia Subduction Zone, a fault running from Northern Vancouver Island to Northern California, will be brought to the attention of the northwest as a potential source of the largest natural calamity in North American history.

A megathrust earthquake with a magnitude of 9 occurred 318 years ago. The Washington State Department of Resources blogged about the occasion on Friday.

On January 26, 1700, a Magnitude 9 megathrust earthquake from the Cascadia subduction zone tore a 1,000-kilometer tear right off the coast of North America, shaking and flooding land from British Columbia to California.

Associated Press and KING 5 News 9:47 p.m. PDT June 1, 2015

SALEM, Ore. -- A series of earthquakes struck off the Oregon coast Monday but officials say no tsunamis were triggered...

Earthquake experts in Washington never miss a chance to scare the living daylights out of us, reminding us that this past Sunday marked the 314th anniversary of the last megathrust earthquake in the Cascadia Subduction Zone, which, had we all been present, would have destroyed much of Seattle and the region's infrastructure.

And another one is overdue.

The Cascadia Region Earthquake Workgroup has therefore modified their scenario document to account for what an earthquake of that size would mean for us today.