Second, third earthquake in a week shakes Western Washington

The US Geological Survey (USGS) confirmed earthquakes of magnitude 3.0 and 2.6 in western Washington on Sunday.

Shortly after 7:45 a.m., Washington felt the first quake of the day – the magnitude 3.0 earthquake. The epicenter was less than a mile from Enetai, the agency reported. The USGS also listed Bremerton (two miles away), Bainbridge Island (3.6 miles) and Port Orchard (4.5 miles) as “near locations” to the quake. It was also about 40 miles from Olympia.

Additionally, the earthquake had a depth of over 16.8 miles (about 27 kilometers), according to the USGS and the Pacific Northwest Seismic Network (PNSN).

There were nearly 190 responses to the USGS about feeling the tremor in some way.

PRELIM earthquake: M3.2, 4.4 km ENE of Bremerton, WA, on 09/29/2024 at 07:49 PDT https://t.co/BgUNYceCzO
Did you feel it?: https://t.co/2L8X18KYv9 pic.twitter.com/k58VaBsvbY

— PNSN (@PNSN1) September 29, 2024

Washington felt the second quake of the day shortly before 2:15 p.m. on Sunday – the magnitude 2.6 earthquake. The epicenter was near the same location as the first, just over a mile from Enetai, the USGS reported.

Further information: Check out the MyNorthwest Earthquake Tracker

According to the USGS and PNSN, the earthquake was over 19 miles (about 31 kilometers) deep.

As of 9 p.m. Monday, there were very few reports of people feeling the later earthquake. Beyond that, neither the quake triggered any reports Posts on Xfrom the U.S. National Oceanic and Atmospheric Administration Tsunami Warning System.

Third magnitude 2.6 earthquake in Washington in 7 days

An earthquake also occurred near the San Juan Islands early on Thursday morning. The USGS reported a magnitude 4.1 earthquake at 4:05 a.m. between San Juan Island and Brentwood Bay, about 12 miles northeast of Victoria, British Columbia.

Previous reporting: The earthquake may have shaken residents of northern Washington

The USGS website showed the quake was felt as far away as Olympia. No damage was reported.

The PNSN website showed that last Thursday's earthquake was by far the strongest in the region in recent weeks.

PRELIM earthquake: M4.1, 18.8 km north-northeast of Victoria, BC, on 09/26/2024 at 04:05 PDT https://t.co/ZHGe7UKxWE
Did you feel it?: https://t.co/Xe5luM5xsu pic.twitter.com/KZcPLf1WeO

— PNSN (@PNSN1) September 26, 2024

Why you didn't receive notification of any recent earthquakes

For those users who have signed up for alerts in the past and are wondering why alerts didn't appear on their phones after the last three earthquakes, that's because they weren't large enough seismic events. The magnitude 4.0, 3.0 and 2.6 earthquakes were below the threshold required to trigger automatic warnings.

“For some of the apps, like MyShake, that you can download to your phone, the threshold is still set at magnitude 4.5 and those thresholds haven't quite been reached,” PNSN's Harold Tobin told KIRO Newsradio after an earthquake magnitude 4.3 hit the region in October 2023.

Warnings and Suggestions: The public is asked to keep at least one emergency kit

MyShake delivers the USGS ShakeAlert in Washington, Oregon and California. It is operated out of the University of California Berkeley's Berkeley Seismological Laboratory and operated in collaboration with the USGS and the California Governor's Office of Emergency Services (Cal OES).

Contributors: Julia Dallas, MyNorthwest; Sam Campbell, KIRO Newsradio

Steve Coogan is the managing editor of MyNorthwest. You can read more of his stories here. Keep following Steve Xor send him an email here.