Tides in Alaska

Cape Kovrizhka tidal current predictions

AlaskaNear Dutch Harbor, Aleutians West Census AreaNOAA UNI1017Harmonic current station25 ft deep

Flooding 0.1 kt now, toward N (2°), building. Maximum flood 0.1 kt at 3:01 AM.

Now

Today, Sat, Sep 26, at 25 ft deep.

Now
Flood 0.1 ktToward N (2°)
Next slack
Sun 2:54 AMAKDT
Next max flood
0.1 kt3:01 AM
Next max ebb
0.2 ktMon 4:05 AM
0.00.20.40.60.81.012 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM12 AMSlackNow

Knots along the channel: above the line the flood, running in toward N (2°); below it the ebb, running out. Times are Alaska Daylight Time. Today: flood 0.1 kt 3:01 AM, flood 0.8 kt 8:49 AM, flood 0.2 kt 3:27 PM, flood 1.0 kt 9:00 PM.

Alerts in force3

National Weather Service marine and coastal products at this station’s position.

  • 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...SW wind 45 kt. Seas 20 ft. Rain showers. .SAT...W wind 45 kt. Seas 20 ft. Rain showers. .SAT NIGHT...W wind 30 kt. Seas 14 ft. Rain showers. .SUN AND SUN NIGHT...NW wind 25 kt. Seas 9 ft. .MON...W wind 25 kt. Seas 8 ft. .TUE...W wind 20 kt. Seas 5 ft. .WED...SE wind 25 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 45 kt. Seas 22 ft. Rain showers. .TONIGHT...SW wind 45 kt. Seas 22 ft. Rain showers. .SAT...W wind 40 kt. Seas 22 ft. Rain showers. .SAT NIGHT...W wind 30 kt. Seas 14 ft. .SUN THROUGH MON...W wind 25 kt. Seas 10 ft. .TUE...W wind 20 kt. Seas 5 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...SW wind 45 kt. Seas 16 ft building to 23 ft after midnight. Rain showers. .FRI...SW wind 45 kt. Seas 22 ft. Rain showers. .FRI NIGHT...SW wind 45 kt. Seas 22 ft. Rain showers. .SAT...W wind 45 kt. Seas 22 ft. .SAT NIGHT...W wind 30 kt. Seas 14 ft. .SUN...NW wind 25 kt. Seas 9 ft. .MON THROUGH TUE...W wind 20 kt. Seas 5 ft.

7-day current table

Strongest flood this week 1.5 kt, Fri, Oct 2 at 5:49 PM. Strongest ebb 0.6 kt, Thu, Oct 1 at 6:05 AM.

Slack water and maximum currents at Cape Kovrizhka, Alaska Daylight Time; knots, and the direction the water runs toward.
TimeEventSpeedToward
Sat, Sep 26
3:01 AMMaximum flood0.1 ktN (2°)
8:49 AMMaximum flood0.8 ktN (2°)
3:27 PMMaximum flood0.2 ktN (2°)
9:00 PMMaximum flood1.0 ktN (2°)
Sun, Sep 27
2:54 AMSlack water
4:06 AMSlack water
9:49 AMMaximum flood0.9 ktN (2°)
4:06 PMMaximum flood0.3 ktN (2°)
9:20 PMMaximum flood0.9 ktN (2°)
Mon, Sep 28
2:28 AMSlack water
4:05 AMMaximum ebb0.2 kt
5:43 AMSlack water
10:59 AMMaximum flood0.9 ktN (2°)
4:41 PMMaximum flood0.5 ktN (2°)
9:28 PMMaximum flood0.9 ktN (2°)
Tue, Sep 29
2:28 AMSlack water
4:42 AMMaximum ebb0.4 kt
6:59 AMSlack water
12:54 PMMaximum flood1.0 ktN (2°)
5:17 PMMaximum flood0.8 ktN (2°)
9:19 PMMaximum flood0.9 ktN (2°)
Wed, Sep 30
2:35 AMSlack water
5:21 AMMaximum ebb0.5 kt
8:14 AMSlack water
2:55 PMMaximum flood1.1 ktN (2°)
Thu, Oct 1
2:46 AMSlack water
6:05 AMMaximum ebb0.6 kt
9:24 AMSlack water
4:50 PMMaximum flood1.3 ktN (2°)
Fri, Oct 2
3:01 AMSlack water
6:53 AMMaximum ebb0.6 kt
10:24 AMSlack water
5:49 PMMaximum flood1.5 ktN (2°)

Other depths

NOAA predicts the current at more than one depth here. This page is for the shallowest; the water deeper down turns at different times and runs at different speeds.

DepthStrongest flood todayStrongest ebb today
25 ft1.0 kt 9:00 PM
103 ft0.8 kt 8:45 PM
192 ft0.6 kt 8:33 PM0.2 kt 4:18 AM

What this means

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.

Nearby2

The closest other NOAA current stations, nearest first.

More for this place

Sources

Tidal current predictions from NOAA’s Center for Operational Oceanographic Products and Services (CO-OPS), station UNI1017, bin 18: original at NOAA. Marine alerts from the National Weather Service.