November 22, 2018

Bridget Trosin, WSG Coastal Policy Specialist,

 Season’s Biggest Tides Are Coming

Head outdoors this holiday season and help build a picture of the future.

New statewide app allows you to share photos instantly.

King tides, the annual extreme-high tides that occur whenever the moon is closest to Earth, are a dramatic feature of Washington winters – and a glimpse of what our future in Western Washington may look like as sea levels rise. This holiday season provides a great opportunity for people to capture these extreme tides and help scientists assemble a preview of shorelines to come. You can find the date and time of the next king tide nearest you by visiting the Washington Sea Great king tides calendar.

It’s simple to get involved during the 2018-2019 Washington king tides season and raise awareness about rising seas, particularly now that a new app called MyCoast was developed for statewide use: Download the MyCoast app on your smart phone (or go to and upload your king tide photographs from any king tide events around the state.

Your photos will help scientists, managers, planners and your own community visualize the changes coming to coastal regions around Western Washington.  To find out how much sea levels could rise in your community, check the most current sea level rise projections.

If you miss this holiday’s opportunity to take photos along the shoreline, keep your phone or camera ready. There are more king tides coming in December and January.

The King Tides program is a partnership between Washington Sea Grant and Washington Department of Ecology.


Washington Sea Grant, based at the University of Washington, provides statewide marine research, outreach, and education services, helping people understand and address the challenges facing our ocean and coasts. The National Sea Grant College Program is part of the National Oceanic and Atmospheric Administration, U.S. Department of Commerce.