Bishop Point, Unalaska Island tidal current predictions

Now

Ebb 0.1 ktToward W (261°)

Next slack

5:02 PMAKDT

Next max flood

0.8 ktSun 4:09 AM

Next max ebb

0.4 kt10:05 AM

Knots along the channel: above the line the flood, running in toward ENE (64°); below it the ebb, running out toward W (261°). Times are Alaska Daylight Time. Today: flood 0.8 kt 3:26 AM, slack 7:16 AM, ebb 0.4 kt 10:05 AM, slack 5:02 PM, ebb 0.3 kt 9:04 PM, slack 11:30 PM.

• Gale Warning Gale Warning issued September 26 at 5:16AM AKDT until September 26 at 5:00PM AKDT by NWS Anchorage AKUntil 5:00 PM
  Full text

  Coastal Waters Forecast for Southwest Alaska+Bristol Bay+The Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out. 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. .TODAY...W wind 45 kt. Seas 20 ft. Rain showers. .TONIGHT...W wind 30 kt. Seas 14 ft. .SUN...W wind 25 kt. Seas 8 ft. .SUN NIGHT...NW wind 25 kt. Seas 8 ft. .MON THROUGH TUE...W wind 20 kt. Seas 6 ft. .WED...S wind 20 kt. Seas 5 ft.

• Gale Warning Gale Warning issued September 25 at 3:30PM AKDT until September 26 at 5:00PM AKDT by NWS Anchorage AKUntil 5:00 PM
  Full text

  Coastal Waters Forecast for Southwest Alaska+Bristol Bay+The Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out. 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...SW wind 45 kt. Seas 20 ft. Rain showers. .SAT...W wind 45 kt. Seas 20 ft. Rain showers. .SAT NIGHT...W wind 30 kt. Seas 14 ft. Rain showers. .SUN AND SUN NIGHT...NW wind 25 kt. Seas 9 ft. .MON...W wind 25 kt. Seas 8 ft. .TUE...W wind 20 kt. Seas 5 ft. .WED...SE wind 25 kt. Seas 4 ft.

• Gale Warning Gale Warning issued September 25 at 5:09AM AKDT until September 26 at 5:00PM AKDT by NWS Anchorage AKUntil 5:00 PM
  Full text

  Coastal Waters Forecast for Southwest Alaska+Bristol Bay+The Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out. 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. .TODAY...SW wind 45 kt. Seas 22 ft. Rain showers. .TONIGHT...SW wind 45 kt. Seas 22 ft. Rain showers. .SAT...W wind 40 kt. Seas 22 ft. Rain showers. .SAT NIGHT...W wind 30 kt. Seas 14 ft. .SUN THROUGH MON...W wind 25 kt. Seas 10 ft. .TUE...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 Cheerful, Unalaska IslandHarmonic current station12 mi
• Cape KovrizhkaHarmonic current station13 mi
• Captains BayHarmonic current station17 mi
• Priest RockHarmonic current station24 mi

• Tide times at Dutch Harbor, Amaknak Island 18 mi
• Tide times at Unalaska 18 mi
• Tide times at Anderson Bay 21 mi
• Forecast for Dutch Harbor, AK
• 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 UNI1023, bin 16: original at NOAA. Marine alerts from the National Weather Service.