Turnagain Arm Bore Tide
The bore forms only when large Cook Inlet tidal swings, timing, wind, and channel geometry align.
Artwork inspired by Byron Birdsall
A tidal wave travels up a shallow inlet beneath the Chugach Mountains. The bore forms only when large Cook Inlet tidal swings, timing, wind, and channel geometry align. Seeing it requires prediction and patience, not merely arriving at a famous pullout.
Use NOAA tide guidance to choose a safe roadside viewpoint well before the expected window, then watch the entire channel rather than one fixed spot. Never walk onto the mudflats: glacial silt can trap people while water returns quickly, and roadside traffic adds another hazard. The rewarding visit is the one that connects traveling wave with glacial mudflats, then tests that reading against the place itself.
- Inlet
- Cook Inlet
- Best tides
- Large tidal range
- Safety
- Stay off mudflats
Quick guide
- Start with
- Use NOAA tide guidance to choose a safe roadside viewpoint well before the expected window, then watch the entire channel rather than one fixed spot.
- Look closely at
- Compare traveling wave with glacial mudflats; their relationship carries the central story.
Know before you go
- Start with
- Use NOAA tide guidance to choose a safe roadside viewpoint well before the expected window, then watch the entire channel rather than one fixed spot.
- Look closely at
- Compare traveling wave with glacial mudflats; their relationship carries the central story.
- Connect the story
- The bore forms only when large Cook Inlet tidal swings, timing, wind, and channel geometry align. Seeing it requires prediction and patience, not merely arriving at a famous pullout.
- Plan around
- Allow 1½ hours–full day. Never walk onto the mudflats: glacial silt can trap people while water returns quickly, and roadside traffic adds another hazard.
Good to know
Never walk onto the mudflats: glacial silt can trap people while water returns quickly, and roadside traffic adds another hazard.
Notice these
- traveling wave
- glacial mudflats
- Chugach backdrop