San Christoval Rock tidal current predictions

Now

Ebb 1.1 ktToward SE (126°)

Next slack

Sun 4:00 AMAKDT

Next max flood

1.7 ktSun 6:51 AM

Next max ebb

1.7 ktSun 12:53 AM

Knots along the channel: above the line the flood, running in toward NW (308°); below it the ebb, running out toward SE (126°). Times are Alaska Daylight Time. Today: ebb 1.4 kt 12:23 AM, slack 3:15 AM, flood 1.7 kt 6:15 AM, slack 9:23 AM, ebb 1.6 kt 12:35 PM, slack 3:37 PM, flood 1.8 kt 6:34 PM, slack 9:42 PM.

• Small Craft Advisory Small Craft Advisory issued September 26 at 9:57PM AKDT until September 27 at 6:00PM AKDT by NWS Juneau AKUntil Sun 6:00 PM
  Full text

  * WHAT...South winds 15 to 25 kt with gusts up to 35 kt and seas 6 to 11 ft expected. * WHERE...Cross Sound and Dixon Entrance to Cape Decision out to 15 NM. * WHEN...From 1 AM to 6 PM AKDT Sunday. * IMPACTS...Conditions will be hazardous to small craft.

  Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

• Small Craft Advisory Small Craft Advisory issued September 26 at 3:27PM AKDT until September 27 at 5:00PM AKDT by NWS Juneau AKUntil Sun 5:00 PM
  Full text

  Southeast Alaska Coastal Waters from Dixon Entrance to Cape Suckling out 100 NM Wind forecasts reflect the predominant speed and direction expected. Seas forecasts represent the average of the highest one-third of the combined windwave and swell height. .TONIGHT...S wind 20 kt. Seas 9 ft. Rain late. .SUN...S wind 30 kt. Seas 11 ft. Rain. .SUN NIGHT...S wind 25 kt becoming W late. Seas 12 ft. Rain. .MON...SW wind 15 kt. Seas 10 ft. Rain. .MON NIGHT...SW wind 15 kt. Seas 8 ft. Showers. .TUE...SW wind 15 kt. Seas 8 ft. .WED...S wind 15 kt. Seas 8 ft. .THU...W wind 15 kt. Seas 8 ft.

• Small Craft Advisory Small Craft Advisory issued September 26 at 2:58AM AKDT until September 27 at 5:00AM AKDT by NWS Juneau AKUntil Sun 5:00 AM
  Full text

  Southeast Alaska Coastal Waters from Dixon Entrance to Cape Suckling out 100 NM Wind forecasts reflect the predominant speed and direction expected. Seas forecasts represent the average of the highest one-third of the combined windwave and swell height. .TODAY...S wind 25 kt. Seas 5 ft building to 9 ft. Rain early in the morning. .TONIGHT...S wind 20 kt. Seas 9 ft. Rain late. .SUN...S wind 25 kt. Seas 11 ft. Rain. .SUN NIGHT...S wind 25 kt. Seas 12 ft. Rain. .MON...SW wind 15 kt. Seas 10 ft. .TUE...SW wind 15 kt. Seas 8 ft. .WED...S wind 15 kt. Seas 8 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.

• San Christoval Chanel, Larz Lt., 0.25nm N ofHarmonic current station2.1 mi
• Klawock Narrows, north of Fish Egg IslandHarmonic current station6.0 mi
• Portillo ChannelHarmonic current station6.9 mi
• Craig CannerySubordinate current station8.0 mi
• Coronados Islands, 2 miles west ofSubordinate current station10 mi
• Saint Nicholas Channel, northHarmonic current station11 mi
• Toti Island, 1.1 miles west ofSubordinate current station12 mi
• Cape Flores, 1 mile north ofSubordinate current station14 mi

• Tide times at Cruz Pass, San Fernando Island 1.6 mi
• Tide times at Shinaku Inlet 6.1 mi
• Tide times at Craig, Klawock Inlet 8.0 mi
• Forecast for Klawock, 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 SEA0639, bin 5: original at NOAA. Marine alerts from the National Weather Service.