Isanotski Strait (False Pass Cnry) tidal current predictions

Now

Flood 2.5 ktToward N (358°)

Next slack

6:36 AMAKDT

Next max flood

3.8 kt3:04 AM

Next max ebb

3.1 kt8:56 AM

Knots along the channel: above the line the flood, running in toward N (358°); below it the ebb, running out toward S (178°). Times are Alaska Daylight Time. Today: slack 12:11 AM, flood 3.8 kt 3:04 AM, slack 6:36 AM, ebb 3.1 kt 8:56 AM, slack 12:06 PM, flood 4.1 kt 2:40 PM, slack 6:44 PM, ebb 3.3 kt 9:24 PM.

• 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...S wind 30 kt becoming SW 40 kt after midnight. Seas 15 ft. Rain showers. .SAT...SW wind 40 kt. Seas 18 ft. Rain showers. .SAT NIGHT...W wind 30 kt. Seas 16 ft. Rain showers. .SUN AND SUN NIGHT...NW wind 30 kt. Seas 11 ft. .MON...NW wind 30 kt. Seas 11 ft. .TUE...W wind 20 kt. Seas 7 ft. .WED...N wind 20 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 35 kt. Seas 16 ft. Rain showers. .TONIGHT...S wind 30 kt becoming SW 40 kt after midnight. Seas 17 ft. Rain showers. .SAT...SW wind 40 kt. Seas 20 ft. Rain showers. .SAT NIGHT...W wind 35 kt. Seas 16 ft. .SUN THROUGH MON...NW wind 30 kt. Seas 13 ft. .TUE...W wind 20 kt. Seas 7 ft.

• Gale Warning Gale Warning issued September 24 at 3:09PM AKDT until September 26 at 5:00AM AKDT by NWS Anchorage AKUntil 5:00 AM
  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...S wind 30 kt. Seas 10 ft. Rain showers. .FRI...SW wind 35 kt. Seas 16 ft. Rain showers. .FRI NIGHT...S wind 30 kt becoming SW 45 kt after midnight. Seas 17 ft. Rain showers. .SAT...SW wind 45 kt. Seas 20 ft. .SAT NIGHT...W wind 35 kt. Seas 16 ft. .SUN THROUGH MON...NW wind 30 kt. Seas 9 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.

• Bechevin Bay, off Rocky PointSubordinate current station8.2 mi
• Otter Point, off of, north sideSubordinate current station21 mi

• Tide times at False Pass, Isanotski Strait 0.6 mi
• Tide times at Isanotski Strait Entrance, Ikatan Bay 6.3 mi
• Tide times at Neumans Cove, Unimak Island 7.1 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 UNI1901, bin 1: original at NOAA. Marine alerts from the National Weather Service.