Anchorage, 0.2 mile offshore tidal current predictions

Now

Flood 1.1 ktToward NNE (28°)

Next slack

10:00 AMAKDT

Next max flood

1.7 kt6:57 PM

Next max ebb

3.0 kt12:26 PM

Knots along the channel: above the line the flood, running in toward NNE (28°); below it the ebb, running out toward SSW (207°). Times are Alaska Daylight Time. Today: ebb 3.7 kt 12:02 AM, slack 2:13 AM, flood 1.9 kt 6:42 AM, slack 10:00 AM, ebb 3.0 kt 12:26 PM, slack 2:27 PM, flood 1.7 kt 6:57 PM, slack 9:51 PM.

None right now. The National Weather Service issues small craft advisories, gale and storm warnings, special marine warnings, dense fog advisories and coastal flood products for water like this.

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.

• Anchorage, west ofSubordinate current station1.4 mi
• Anchorage Shipdock, northwest ofSubordinate current station1.4 mi
• Port Mackenzie, south ofHarmonic current station1.9 mi
• Point Woronzof, 1.2nm NE ofHarmonic current station2.7 mi
• Cairn Point, northwest of (east side)Subordinate current station2.9 mi
• Cairn Point, northwest of (west side)Subordinate current station2.9 mi
• Port MackenzieSubordinate current station3.0 mi
• Knik Arm, east sideHarmonic current station3.5 mi

• Tide times at Anchorage 1.0 mi
• Tide times at Port MacKenzie 3.0 mi
• Tide times at Fire Island 11 mi
• Forecast for Anchorage, 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 PCT5146, bin 1: original at NOAA. Marine alerts from the National Weather Service.