King tides are expected to push water beyond the shoreline and even flood some roads along the Washington coast this weekend. While Puget Sound is not expected to see major impacts, coastal communities and parts of the north Sound could experience flooding during midday high tides. If you’re hoping to see some impressive waves this weekend, we have an expert recommendation for a safe viewing spot along the Washington coast.
Read on for all the details.
What causes King Tides?
Tides are caused by the steady pull of the moon and the sun on the Earth. As these three bodies move, they create predictable daily, monthly, and yearly tide patterns. Some days bring higher tides than others, but a few times each year, these patterns line up to create the highest and lowest tides of all—known as king tides.
The moon orbits the Earth once a month, shaping monthly tide cycles. At the same time, the Earth orbits the sun once a year, creating yearly changes. King tides occur when these monthly and yearly cycles overlap, usually in January and July. In January, the Earth is closest to the sun, which boosts the strength of spring tides and helps create king tides. While king tides don’t always come with big waves, when they do, the effects can be dramatic.
Several other factors influence tide height, including ocean floor shape, latitude, air pressure, and the tilt of the Earth. In Washington, the wide and shallow continental shelf helps amplify tides, making king tides especially noticeable along the coast.
Where to view the King Tides in Washington?
For those interested in seeing king tides in action, Cape Disappointment State Park is a popular wave-watching spot. When tides rise above eight feet, large waves can slam into the cliffs. Aaron Webster, an Interpretive Specialist at the park, recommends the Lewis & Clark Interpretive Center, which sits high above the Columbia River Bar and offers a safe viewing area. The best viewing happens when high tides, large waves, and clear skies come together.
If you go, be cautious. King tides combined with strong waves can create dangerous conditions. Stay off the beaches and watch for sneaker waves—sudden, much larger waves that can rush far up the shore, carrying logs and debris. Stay back, stay alert, and enjoy the power of nature safely.
You can check Washington Sea Grant for tide schedules around Washington.