This is a big tournament and worth attending if you are able.
From the web site for the tournament here:

2018 Continental Judo Crown

Level E Tournament
National Referee Examination & Re-certification Site
Sunday, November 11th
Seattle, Washington

About the Continental Crown

For many years the Continental Crown Judo Tournament has been a showcase event for judo athletes on the west coast of the United States. The Continental
Crown is a USA Judo Senior Class-E and Junior Class-D event, and consistently features some of the highest caliber judo players in the country. This year
we happily invite judo players from all over the Pacific Rim and the world to participate in the spirit of international friendship and competition. The
Continental Crown is located in Seattle Washington in the beautiful Pacific Northwest. Seattle is the birthplace of Judo on the mainland of the United
States and it is our distinct honor to host such a prestigious judo event in our state.