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Spot de 20 Mile

20 Mile

20 Mile

United States

60.86 | -149.01

Overview

20 Mile is a spot at the mouth of the 20 Mile River in Turnagain Arm, south of Anchorage, Alaska. Turnagain Arm is famous for having one of the highest tidal ranges in the world (up to 12 meters/40 feet) and its spectacular bore tide. Winds are channeled and accelerated through the narrow arm, blowing primarily from the NE or SW depending on conditions. This spot is EXCLUSIVELY reserved for expert riders due to extreme conditions: deadly tides, glacial water, and devastating currents. The setting is grandiose with the Chugach Mountains as a backdrop.

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Photo gallery of 20 Mile

Spot video

Technical details of 20 Mile spot

Spot functioning

On the water

GLACIAL water year-round (2-10°C/36-50°F) — dry suit ABSOLUTELY MANDATORY. EXTREME tidal range up to 12 meters/40 feet — one of the highest in the world. The bore tide can create a 2-meter wave traveling at 15+ knots up the arm. The bottom is glacial mud — EXTREMELY DANGEROUS: this mud can trap a person like quicksand. Water is glacial, turbid, and sediment-laden. Tidal currents among the strongest in the world.

Required level

Expert

Spot opening date

Open all year round

Spot currently open :-)

Hazards

AMONG THE MOST DANGEROUS SPOTS IN THE WORLD. Glacial mud = quicksand — people have DIED trapped in Turnagain Arm mud waiting for the rising tide. NEVER walk on the mudflats. 12 m tidal range — the tide rises faster than a person can run. Bore tide potentially fatal. Glacial water — fatal hypothermia in minutes. Devastating currents. Brown bears and moose on the shores. Alaska Railroad trains along the coast. Floating debris (logs). Very limited rescue services.

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Spot forecast for 20 Mile

08:04 | 20:03

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Wind

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Gust
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Swell

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Height
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Tide:

Visibility

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Forecasts provided by Open-Meteo

Live Wind

Currently, there is no weather station at this spot. If you want to change this, help us fund one: Weather Station Project

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