Port Gravina tidal current predictions

Now

Flood 0.1 ktToward ENE (59°)

Next slack

1:55 PMAKDT

Next max flood

0.1 kt10:41 AM

Next max ebb

0.2 kt5:21 PM

Knots along the channel: above the line the flood, running in toward ENE (59°); below it the ebb, running out toward W (267°). Times are Alaska Daylight Time. Today: slack 1:21 AM, ebb 0.2 kt 4:45 AM, slack 8:08 AM, flood 0.1 kt 10:41 AM, slack 1:55 PM, ebb 0.2 kt 5:21 PM, slack 8:19 PM, flood 0.2 kt 10:45 PM.

• Small Craft Advisory Small Craft Advisory issued September 26 at 6:43AM 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. .TODAY...E wind 30 kt. Seas 7 ft. Rain. .TONIGHT...E wind 30 kt. Seas 7 ft subsiding to 4 ft after midnight. Widespread rain showers. .SUN...E wind 20 kt. Seas 3 ft. Widespread rain showers. .SUN NIGHT...E wind 20 kt. Seas 4 ft. .MON...NE wind 15 kt. Seas 3 ft. .TUE THROUGH WED...E 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 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. .TODAY...E wind 30 kt. Seas 7 ft. Rain. .TONIGHT...E wind 30 kt. Seas 7 ft subsiding to 4 ft after midnight. Widespread rain showers. .SUN...E wind 20 kt. Seas 3 ft. Widespread rain showers. .SUN NIGHT...E wind 20 kt. Seas 4 ft. .MON...NE wind 15 kt. Seas 3 ft. .TUE THROUGH WED...E 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.

• Middle Ground Shoal, north ofHarmonic current station3.4 mi
• Johnstone PointHarmonic current station11 mi
• Johnston Point, 7 nmi. northwest ofSubordinate current station14 mi
• Channel IslandHarmonic current station19 mi
• Mud BayHarmonic current station19 mi
• Salmo PointHarmonic current station21 mi
• Bear CapeHarmonic current station21 mi
• Salmo Point, Hawkins I., 1.2 miles SE ofSubordinate current station22 mi

• Tide times at Johnstone Point 11 mi
• Tide times at Snug Corner Cove, Port Fidalgo 12 mi
• Tide times at Comfort Cove, Port Gravina 13 mi
• Forecast for Cordova, 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 PWS0736, bin 11: original at NOAA. Marine alerts from the National Weather Service.