UPDATE: Another earthquake has hit the Pacific Northwest. A magnitude 4.8 seismic event was detected off the western coast of Vancouver Island just one hour after the tremor in the Seattle region.
Social media in Washington State is lighting up after a modest but extremely shallow earthquake struck the Seattle region late this evening.
The US Geological Survey says the tremor at 8:59 pm had an epicentre at a depth of only four kilometres in a mountainous area near Hood Canal on Kitsap Peninsula in Puget Sound. It was just 55 km southwest of downtown Seattle, with a magnitude of 4.2.
At this time, there are no reports of any damage, but it was widely felt across the most urbanized area of Washington State.
This is the second earthquake with a magnitude of 4.0 and over on the continental mainland in the Pacific Northwest in less than a week. On Saturday, an earthquake was detected on the BC mainland northwest of the Pemberton Valley.
Thousands of earthquakes hit the Pacific Northwest every year, but only a small fraction have a magnitude of 4.0 or over. Most of these tremors also occur in the ocean just off the coast.
Just felt an earthquake shake my bed. Apparently there’s an earthquake in Seattle. Be safe guys.
— Alysia Rosback (@alysia_the_wise) February 23, 2017
An earthquake and snow at the same time in Seattle.
I guess it’s time. I’ll miss you all.
— Kelly Clay (@kellyhclay) February 23, 2017
— Yunkin Keophomma (@northxnorthx) February 23, 2017
Was that an earthquake #Seattle?
— Bradford Crowder (@unclebeefy) February 23, 2017
We may have just had a small earthquake in or very close to Seattle.
— Arne Christensen (@nwquakes) February 23, 2017
— Lara Katherine Bain (@LaraKBain) February 23, 2017
— tiffany (@tiffanylieu) February 23, 2017
— Rebecca ❣ (@rebowers) February 23, 2017
— Mike Grauer Jr (@3Dprint_Seattle) February 23, 2017
Did anyone in Seattle feel that? Seems like we just had a (small) earthquake over here in kitsal…
— Brian🌟Coleman (@Feueradler9) February 23, 2017
Ok so like the ground just shook and apparently we just had an earthquake?
— Seattle Gay (@secretgaydude) February 23, 2017
Just felt an #earthquake at UW in Seattle.
— Shannon (@ShannonBlajeski) February 23, 2017
Never thought I’d feel an earthquake in Washington. #wellthatwasweird
— Shawn (@wilkmmss) February 23, 2017
— Gina Rinehart (@EAustin1969) February 23, 2017
@NewEarthquake We just felt earthquake here in western Washington State moments ago. Hope everyone’s okay out there…
— EthicsMatter (@mulch_me) February 23, 2017
Literally just felt an earthquake for my first time. Washington is wild b
— Zaddy (@realzydiak) February 23, 2017