VIDEO: Bore Tide Surfing in Turnagain Arm, Alaska

People riding the Turnagain Arm bore tide. pic.twitter.com/DRpsZLoCCd

— Brian Brettschneider (@Climatologist49) May 14, 2021

Twitter user Brian Brettschneider shared a video of surfers taking advantage of and surfing a bore tide in Alaska. A bore tide occurs when seawater rushes into a river or inlet. Bore tides come in after very low tides created by the full or new moon.

There are about 60 bore tides that occur in the world, but the bore tide in Turnagain Arm, Alaska is one of the biggest. Running an average length of 40-50 miles up the inlet, this bore tide is a sight to behold, especially with its dramatic backdrop of high mountain peaks and lush green slopes.