Cape Douglas tidal current predictions

Now

Ebb 0.4 ktToward SSE (164°)

Next slack

Sat 12:36 AMAKDT

Next max flood

0.2 ktSat 2:25 AM

Next max ebb

0.5 kt8:00 PM

Knots along the channel: above the line the flood, running in toward NNW (344°); below it the ebb, running out toward SSE (164°). Times are Alaska Daylight Time. Today: slack 12:15 AM, flood 0.1 kt 1:48 AM, slack 3:24 AM, ebb 0.5 kt 7:51 AM, slack 12:24 PM, flood 0.1 kt 2:06 PM, slack 3:48 PM, ebb 0.5 kt 8:00 PM.

• Small Craft Advisory Small Craft Advisory issued September 25 at 2:47PM AKDT until September 26 at 5:00PM AKDT by NWS Anchorage AKUntil Sat 5:00 PM
  Full text

  Coastal Waters Forecast for the Northern Gulf of Alaska Coast up to 100 nm out including Kodiak Island and Cook Inlet. Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. .TONIGHT...SE wind 25 kt. Seas 7 ft. Rain showers. .SAT...SE wind 25 kt. Seas 5 ft. Rain showers. .SAT NIGHT...SE wind 20 kt. Seas 4 ft. Rain showers. .SUN...SE wind 15 kt. Seas 3 ft. .SUN NIGHT...Variable wind 10 kt. Seas 4 ft. .MON THROUGH TUE...W wind 25 kt. Seas 7 ft. .WED...W wind 20 kt. Seas 5 ft.

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.

• Cape Douglas, northeast ofSubordinate current station11 mi
• Ushagat Island, northwest ofSubordinate current station24 mi

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Tidal current predictions from NOAA’s Center for Operational Oceanographic Products and Services (CO-OPS), station COI0517, bin 14: original at NOAA. Marine alerts from the National Weather Service.