Affleck Canal tidal current predictions

Now

SlackTurning

Next slack

8:46 PMAKDT

Next max flood

0.2 ktSat 11:26 AM

Next max ebb

0.1 ktSat 5:57 PM

Knots along the channel: above the line the flood, running in toward NNW (347°); below it the ebb, running out toward S (175°). Times are Alaska Daylight Time. Today: ebb 0.1 kt 2:22 AM, slack 5:37 AM, flood 0.1 kt 10:16 AM, slack 1:55 PM, slack 8:46 PM.

None right now. The National Weather Service issues small craft advisories, gale and storm warnings, special marine warnings, dense fog advisories and coastal flood products for water like this.

The flood is the tidal current running in from the sea, the ebb the current running back out. Slack water is the short turn between them, when the current is weakest: the time to cross a strong channel, anchor, or dive. Slack in a channel is not the time of high or low tide; it can come hours after.

Speeds are knots along the channel's main axis, and directions are degrees true toward which the water flows, as NOAA prints its tables. A current against the wind stands the waves up steep and close together.

Predictions are astronomical: the moon and the sun, not the weather. Strong wind, river flow after heavy rain and storm surge all change the real current.

• Fairway Island, SW ofHarmonic current station4.6 mi
• Fairway Island, 2nm east ofHarmonic current station4.8 mi
• Point St. Albans, 3 miles SSE ofSubordinate current station6.6 mi
• Point St. Albans, 4 miles east ofSubordinate current station8.4 mi
• Amelius Island, 1 mile east ofHarmonic current station10 mi
• Ruins Point, 2 miles west ofSubordinate current station12 mi
• Coronation Island - Spanish Island, betweenHarmonic current station13 mi
• Cora Point, 2 miles east ofSubordinate current station13 mi

• Tide times at Port McArthur, Kuiu Island 3.2 mi
• Tide times at Point St. Albans 4.0 mi
• Tide times at Kell Bay, Affleck Canal, Kuiu Island 4.1 mi
• Open the live map with tidal currents
• All tidal current stations in Alaska

Tidal current predictions from NOAA’s Center for Operational Oceanographic Products and Services (CO-OPS), station SEA0617, bin 12: original at NOAA. Marine alerts from the National Weather Service.