Seismo Blog Posts Feed

Three new ways to view recent earthquakes in the Northwest

Mon, 22 Apr 2013 12:38:00 +0000

To address our users' desire for a simple user interface to view the latest earthquakes in the Pacific Northwest, we have just released three features: a new recent events list, mobile views, and a Twitter feed that will tweet all PNSN events magnitude 2 or greater.

M3.5 event west of Tacoma early Sunday morning

Mon, 08 Apr 2013 00:20:00 +0000

Deep event is typical of seismicity near Seattle, has some aftershocks.

Oregon ETS is over, but....

Thu, 04 Apr 2013 21:19:00 +0000

The ETS in central Oregon starting on Feb 24 seems to have finished on Mar 31. But, bursts of tremor continue in other parts of Cascadia. In fact during the Oregon ETS much of Cascadia has seen periods of tremor lasting from one to several days.

Small swarm near Mount McLoughlin last night

Sun, 24 Mar 2013 16:19:00 +0000

It has mostly been seismically quiet recently, although last night and this morning a swarm has been active in southern Oregon.

Earthquake early warning workshop quick report

Sun, 17 Mar 2013 17:42:00 +0000

A workshop with 50 people met last month to chart the path to Earthquake Early Warning in the Pacific Northwest. Progress is encouraging.

thePNSN Facebook discussions

Fri, 15 Mar 2013 22:12:00 +0000

The PNSN's in-depth blogs are here, and meanwhile our liveliest discussions on happening on Facebook.

Deep Tremor over much of Cascadia

Fri, 08 Mar 2013 23:00:00 +0000

Following three months of relatively little deep tremor in Cascadia the past month has seen bursts of activity up and down the region including what appears to be a full blown ETS starting in northern Oregon and spreading south.

Small earthquakes under Gold Bar

Thu, 28 Feb 2013 20:03:00 +0000

Though the residents of Gold Bar may not have noticed, a swarm of hundreds of tiny earthquakes has been rumbling along just a few kilometers east of town since October 2012.

The Last Cascadia Great Earthquake and Tsunami; 313 Years and Ticking

Thu, 24 Jan 2013 23:28:00 +0000

The last great Cascadia Subduction Zone Earthquake occurred 313 years ago. We need to do more before the next one strikes.

A flash in the sky, a thump in the ground

Fri, 11 Jan 2013 21:39:00 +0000

Reports of a bright flash in the sky in eastern Washington this morning caused us to search seismograms for stations in the area which turned up what seems to be a "sonic" source that weakly was recorded on 9 seismographs. It is fairly common for bright flashes in the atmosphere, sometimes referred to as "fireballs", "meteors" or "bolides" to end up being recored seismically. Such recordings can allow us to pinpoint the time and location more accurately than can be done from eyewitness reports.