The Alaska bore tide is a wave formed when a super low tide and a super high tide crash into each other in the narrow and shallow Turnagain Arm.
It occurs 2-3 hours after the low tide time in Anchorage, Alaska.
The wave can come twice a day and is often surfed by local riders, who are sometimes able to surf a very long time on 5-10 foot faces.
The breaking wave can reach speeds of 6 to 24 mph and can vary between 6 inches and six feet in height.
Itβs also a wildlife-spotting opportunity: harbor seals often ride the tide into Turnagain Arm & Beluga whales may be seen 30 mins or so later once the water gets deeper.