An earthquake measuring 8.0 on the Richter scale has rattled the Santa Cruz Island Islands in the southwestern Pacific Ocean northeast of Australia. Stay tuned to your NOAA weather radio for further updates. We’ll post them here as well.
NOAA has the earthquake centered in the extreme Southwestern Pacific at 10 degrees south, 160 degrees west. Measured 8.0 on the Richter. NOAA is ascertaining whether there could be a tsunami headed our way. But for now, THERE IS NO OFFICIAL PREDICTION WE ARE GOING TO HAVE A TSUNAMI.
NOAA determined that THERE IS NO TSUNAMI HEADED FOR THE U.S. NORTHWEST COAST. However, NOAA reports there may be minor fluctuations in tidal levels which should not cause any damage.
Tsunami Siren being installed in Depoe Bay System Test “sometime” between 9 and 11am
For some reason, that is not entirely clear, Valentines Day is the day scheduled to test Depoe Bay’s newly installed city-wide Tsunami Warning Siren System. The system was longed planned for and has finally been completed and Valentines Day is the day they’ll fire it up for a full blaring test.
The sirens will be used mainly for alerting residents of an approaching tsunami generated by some distant earthquake, coming from anywhere in the Pacific Rim; Alaska, Japan, Russia, Philippines, Chile, the usual sources of tectonic plate movement. In the event of an earthquake from our own Cascadia Subduction Zone just offshore, the earthquake itself will likely be the only warning sign we’ll get.
The system can also be used to broadcast pre-recorded or live voice announcements about extreme weather coming ashore, hazardous materials incidenta, large fires and other near-catastrophic emergencies.
The sirens are located:
* Highway 101 Right-of-Way – On the West Side of the Highway, and Approximately 18 Feet North of S.W. Oceana Street
* 212 South Point Street – City of Depoe Bay Wastewater Treatment Plant
* Winchell Street Right-of-Way – On the North Side of the Right-Of-Way, Approximately 60 Feet West of Bayview Avenue
* Sunset Street Right-of-Way – On the South Side of the Street, Approximately 30 Feet West of the Highway 101 Sidewalk
* Highway 101 Right-of-Way – On the East Side of the Highway, and Approximately 750 Feet North of Existing Lillian Lane
Correction! North end of Depoe Bay, near WorldMark!
Wendy Mason caught a glimpse of work crews installing one of Depoe Bay’s new tsunami warning sirens which will be quite handy in the event of a distant (Alaskan) earthquake that will give residents a lot of warning to run to higher ground. An offshore Oregonian Cascadian Subduction Zone earthquake will be all the “wake-you-up-and-throw-you-out-of-bed” warning you’ll need after a 9.0 Richter.
Once installed, along with their electronic controllers, they’ll be tested. They run from up near WorldMark to Little Whale Cove.
Geologists are still getting lots of aftershocks from last weekend’s earthquake off the Queen Charlotte Islands, north of Vancouver Island, BC.
This time is was much stronger at 6.2 on the richter, recorded just before 8pm Monday evening. The shaker was stronger than the other 40 or so aftershocks that read in the 4.0 to 5.0 richter range. NOAA said there was no tsunami expected from the shaker.
Shortly before 5am Sunday morning, NOAA reported that South Beach/Newport recorded a tidal surge of 4″ at 10:27pm Saturday evening. The surge was 5″ at Port Angeles, WA at 11:40pm, 5″ at Charleston near Coos Bay, at 12:02am Sunday, Port Orford 9″ at 1:41am, Sunday, Garibaldi, 3″ at 10:15pm.
In California, Crescent City saw a tidal surge of 18″ at 2:14 am, San Francisco 6″ at 1:02am, Monterey 5″ at 12:38am, and at La Jolla near San Diego they measured a 2.5″ surge.
Hawaii saw the greatest tidal surges. Honolulu saw a 6″ surge at 2am Pacific Time, Kahalui on Maui saw a 2.5 foot surge at 2 am Pacific Time, Hilo on the Big Island saw a 1.5 foot surge at shortly after 3am Pacific Time, and Haleiwa on Oahu’s north shore saw a nearly 1.5 foot tidal surge.
NOAA’s best estimate so far on last evening’s earthquake off the southeast coast of Queen Charlotte Island was 7.7 on the richter at a depth of 12 miles.
NOAA cancelled it’s Tsunami Advisory for the West Coast at 4:44am this morning.