Crafton Island - Knight Island Pass tidal current predictions

Now

SlackTurning

Next slack

1:57 AMAKDT

Next max flood

0.1 kt11:05 AM

Next max ebb

0.3 kt5:37 AM

Knots along the channel: above the line the flood, running in toward N (5°); below it the ebb, running out toward S (177°). Times are Alaska Daylight Time. Today: slack 1:57 AM, ebb 0.3 kt 5:37 AM, slack 8:36 AM, flood 0.1 kt 11:05 AM, slack 2:09 PM, ebb 0.3 kt 5:53 PM, slack 8:59 PM, flood 0.1 kt 11:42 PM.

• Small Craft Advisory Small Craft Advisory issued September 26 at 2:47PM AKDT until September 27 at 5:00AM AKDT by NWS Anchorage AKUntil 5:00 AM
  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...E wind 25 kt becoming S 15 kt after midnight. Seas 4 ft. Rain. .SUN...SE wind 10 kt. Seas 2 ft. Rain. .SUN NIGHT...E wind 10 kt. Seas 2 ft. Rain. .MON...NE wind 15 kt. Seas 3 ft. .MON NIGHT...N wind 20 kt. Seas 3 ft. .TUE...Variable wind less than 10 kt. Seas 2 ft. .WED...N wind 10 kt. Seas 2 ft. .THU...E wind 15 kt. Seas 2 ft.

• Small Craft Advisory Small Craft Advisory issued September 26 at 6:43AM AKDT until September 27 at 5:00AM AKDT by NWS Anchorage AKUntil 5:00 AM
  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. .TODAY...SE wind 30 kt. Seas 6 ft. Rain. .TONIGHT...SE wind 25 kt diminishing to 15 kt after midnight. Seas 6 ft subsiding to 2 ft after midnight. Rain. .SUN...E wind 10 kt increasing to 15 kt in the afternoon. Seas 2 ft. Rain showers. .SUN NIGHT...E wind 15 kt. Seas 3 ft. .MON...NE wind 15 kt. Seas 3 ft. .TUE...Variable wind less than 10 kt. Seas 2 ft. .WED...N wind 10 kt. Seas 2 ft.

• Small Craft Advisory Small Craft Advisory issued September 26 at 4:18AM AKDT until September 27 at 5:00AM AKDT by NWS Anchorage AKUntil 5:00 AM
  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. .TODAY...SE wind 30 kt. Seas 6 ft. Rain. .TONIGHT...SE wind 25 kt diminishing to 15 kt after midnight. Seas 6 ft subsiding to 2 ft after midnight. Rain. .SUN...E wind 10 kt increasing to 15 kt in the afternoon. Seas 2 ft. Rain showers. .SUN NIGHT...E wind 15 kt. Seas 3 ft. .MON...NE wind 15 kt. Seas 3 ft. .TUE...Variable wind less than 10 kt. Seas 2 ft. .WED...N wind 10 kt. Seas 2 ft.

• Small Craft Advisory Small Craft Advisory issued September 25 at 2:47PM AKDT until September 27 at 5:00AM AKDT by NWS Anchorage AKUntil 5:00 AM
  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...E wind 30 kt. Seas 7 ft. Rain. .SAT...SE wind 30 kt. Seas 4 ft building to 6 ft in the afternoon. Rain. .SAT NIGHT...SE wind 30 kt diminishing to 15 kt after midnight. Seas 6 ft subsiding to 2 ft after midnight. Widespread rain showers. .SUN...E wind 15 kt. Seas 2 ft. .SUN NIGHT...NE wind 10 kt. Seas 2 ft. .MON...N wind 15 kt. Seas 2 ft. .TUE THROUGH WED...NE wind 10 kt. Seas 2 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.

• W. of Johnson BayHarmonic current station10.0 mi
• Perry PassageHarmonic current station12 mi
• Between Naked and Eleanor IslandsHarmonic current station16 mi
• Snug HarborHarmonic current station18 mi
• Point CulrossHarmonic current station19 mi
• Storey Island, north ofHarmonic current station24 mi

• Tide times at Herring Point 4.1 mi
• Tide times at Eshamy Bay, Knight Island Passage 4.6 mi
• Tide times at Eshamy Lagoon 5.7 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 PWS0708, bin 9: original at NOAA. Marine alerts from the National Weather Service.