Perry Passage tidal current predictions

Now

SlackTurning

Next slack

8:31 PMAKDT

Next max flood

0.1 ktSat 12:40 AM

Next max ebb

0.1 ktSat 5:04 AM

Knots along the channel: above the line the flood, running in toward NW (325°); below it the ebb, running out. Times are Alaska Daylight Time. Today: flood 0.1 kt 12:16 AM, slack 2:18 AM, ebb 0.1 kt 4:38 AM, slack 7:29 AM, flood 0.2 kt 12:41 PM, slack 3:31 PM, ebb 0.1 kt 6:05 PM, slack 8:31 PM.

• Small Craft Advisory Small Craft Advisory issued September 25 at 2:47PM AKDT until September 27 at 5:00AM AKDT by NWS Anchorage AKUntil Sun 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...E wind 30 kt. Seas 7 ft. Rain. .SAT NIGHT...E wind 25 kt. Seas 6 ft subsiding to 4 ft after midnight. Widespread rain showers. .SUN AND SUN NIGHT...NE wind 15 kt. Seas 3 ft. .MON...N wind 15 kt. Seas 2 ft. .TUE THROUGH WED...NE wind 10 kt. Seas 2 ft.

• Small Craft Advisory Small Craft Advisory issued September 25 at 4:55AM 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. .TODAY...E wind 25 kt. Seas 6 ft. Rain. .TONIGHT...E wind 30 kt. Seas 7 ft. Rain. .SAT...E wind 30 kt. Seas 7 ft. Rain. .SAT NIGHT...E wind 25 kt. Seas 6 ft. .SUN...NE wind 15 kt. Seas 3 ft. .MON THROUGH TUE...N wind 10 kt. Seas 2 ft.

• Small Craft Advisory Small Craft Advisory issued September 24 at 3:45PM AKDT until September 26 at 5:00AM AKDT by NWS Anchorage AKUntil Sat 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 20 kt. Seas 4 ft. Rain. .FRI...E wind 25 kt. Seas 6 ft. Rain. .FRI NIGHT...E wind 30 kt. Seas 7 ft. Rain showers. .SAT...E wind 30 kt. Seas 7 ft. .SAT NIGHT...E wind 25 kt. Seas 6 ft. .SUN...NE wind 20 kt. Seas 3 ft. .MON THROUGH TUE...N 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.

• Point CulrossHarmonic current station6.8 mi
• Crafton Island - Knight Island PassHarmonic current station12 mi
• Between Naked and Eleanor IslandsHarmonic current station18 mi
• Storey Island, north ofHarmonic current station21 mi
• W. of Johnson BayHarmonic current station22 mi
• College FiordHarmonic current station22 mi
• Outpost IslandHarmonic current station22 mi
• Storey Island and Peak Island, betweenHarmonic current station24 mi

• Tide times at Perry Island (South Bay) 2.8 mi
• Tide times at Applegate Island 6.0 mi
• Tide times at Culross Bay, Wells Passage 7.2 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 PWS0706, bin 18: original at NOAA. Marine alerts from the National Weather Service.