Middle Point tidal current predictions

Now

Flood 1.2 ktToward N (10°)

Next slack

10:38 PMAKDT

Next max flood

1.5 ktSat 7:30 AM

Next max ebb

2.3 ktSat 1:59 AM

Knots along the channel: above the line the flood, running in toward N (10°); below it the ebb, running out toward S (187°). Times are Alaska Daylight Time. Today: ebb 2.1 kt 1:41 AM, slack 4:34 AM, flood 1.4 kt 6:59 AM, slack 10:21 AM, ebb 2.2 kt 1:50 PM, slack 4:53 PM, flood 1.4 kt 7:15 PM, slack 10:38 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.

• Point SiroiSubordinate current station1.2 mi
• Big Rose Island, 0.2 nmi SE ofHarmonic current station2.2 mi
• Sergius NarrowsHarmonic current station2.5 mi
• Suloia Point, 0.32 nmi ENE ofHarmonic current station3.6 mi
• Povorotni Island, 0.23 nmi WSW ofHarmonic current station5.4 mi
• Kakul NarrowsHarmonic current station6.0 mi
• Sinitsin IslandSubordinate current station8.9 mi
• Kalinin Point, 1 mile north ofSubordinate current station9.9 mi

• Tide times at Bear Bay 1.0 mi
• Tide times at Serguis Narrows 2.3 mi
• Tide times at Haley Anchorage, Fish Bay 4.4 mi
• Forecast for Sitka, 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 PCT4271, bin 1: original at NOAA. Marine alerts from the National Weather Service.