Port Mackenzie tidal current predictions

Now

Ebb 0.9 ktToward SSW (193°)

Next slack

Sat 12:49 AMAKDT

Next max flood

1.0 ktSat 3:48 AM

Next max ebb

1.8 kt10:15 PM

Knots along the channel: above the line the flood, running in toward NNE (18°); below it the ebb, running out toward SSW (193°). Times are Alaska Daylight Time. Today: slack 12:12 AM, flood 0.9 kt 3:16 AM, slack 7:05 AM, ebb 1.7 kt 9:57 AM, slack 12:30 PM, flood 1.0 kt 3:30 PM, slack 7:25 PM, ebb 1.8 kt 10:15 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.

• Cairn Point, northwest of (east side)Subordinate current station0.5 mi
• Cairn Point, northwest of (west side)Subordinate current station0.8 mi
• Knik Arm, NW of AnchorageHarmonic current station1.0 mi
• Port Mackenzie, south ofHarmonic current station1.1 mi
• Knik Arm, east sideHarmonic current station1.2 mi
• Anchorage Shipdock, northwest ofSubordinate current station1.5 mi
• Anchorage, west ofSubordinate current station2.9 mi
• Anchorage, 0.2 mile offshoreSubordinate current station3.0 mi

• Tide times at Port MacKenzie 0.0 mi
• Tide times at Anchorage 2.3 mi
• Tide times at Goose Creek, Knik Arm, Cook Inlet 9.0 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 COI0211, bin 7: original at NOAA. Marine alerts from the National Weather Service.