Ugamak Strait (North end) tidal current predictions

Now

Ebb 0.2 ktToward ESE (122°)

Next slack

3:29 PMAKDT

Next max flood

3.3 kt6:20 PM

Next max ebb

0.9 kt12:52 PM

Knots along the channel: above the line the flood, running in toward NW (322°); below it the ebb, running out toward ESE (122°). Times are Alaska Daylight Time. Today: ebb 2.2 kt 12:28 AM, slack 4:05 AM, flood 3.7 kt 6:42 AM, slack 11:01 AM, ebb 0.9 kt 12:52 PM, slack 3:29 PM, flood 3.3 kt 6:20 PM, slack 9:47 PM.

• Small Craft Advisory Small Craft Advisory issued September 28 at 2:40AM AKDT until September 28 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...NW wind 25 kt. Seas 8 ft. .TONIGHT...NW wind 20 kt. Seas 7 ft. .TUE...NW wind 15 kt. Seas 5 ft. .TUE NIGHT...SW wind 20 kt. Seas 4 ft. .WED...S wind 20 kt. Seas 5 ft. .THU...NE wind 35 kt. Seas 7 ft. .FRI...NE wind 30 kt. Seas 6 ft.

• Small Craft Advisory Small Craft Advisory issued September 27 at 3:32PM AKDT until September 28 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...NW wind 25 kt. Seas 9 ft. .MON...NW wind 25 kt. Seas 8 ft. .MON NIGHT...NW wind 20 kt. Seas 7 ft. .TUE...W wind 15 kt. Seas 5 ft. .TUE NIGHT...SW wind 20 kt. Seas 4 ft. .WED...W wind 20 kt. Seas 5 ft. .THU THROUGH FRI...N wind 30 kt. Seas 6 ft.

• Small Craft Advisory Small Craft Advisory issued September 27 at 3:59AM AKDT until September 28 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 25 kt. Seas 9 ft. .TONIGHT...NW wind 25 kt. Seas 9 ft. .MON...NW wind 25 kt. Seas 8 ft. .MON NIGHT...NW wind 20 kt. Seas 7 ft. .TUE...W wind 15 kt. Seas 5 ft. .WED...NW wind 20 kt. Seas 5 ft. .THU...NE wind 30 kt. Seas 6 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. This is a subordinate station: NOAA predicts it from a nearby harmonic station by fixed corrections to the times and speeds of its slack waters and maxima, so the curve between them is less exact.

• Ugamak Strait, off Kaligagan IslandHarmonic current station3.6 mi
• Unimak PassHarmonic current station10 mi
• Derbin StraitHarmonic current station15 mi
• Unimak Pass, 2.4 miles N of Tanginak ISubordinate current station16 mi
• Unimak Pass, East EntranceHarmonic current station18 mi
• Unimak Pass, North ApproachHarmonic current station19 mi
• Unimak Pass, West ApproachHarmonic current station21 mi
• Avatanak StraitHarmonic current station23 mi

• Tide times at Tigalda Bay, Tigalda Island 6.0 mi
• Tide times at SE Tigalda Island, Pacific Ocean 6.9 mi
• Tide times at Scotch Cap 15 mi
• Forecast for Akutan, 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 PCT5511, bin 1: original at NOAA. Marine alerts from the National Weather Service.