Triangle Ledge, SSE of tidal current predictions

Now

Ebb 0.2 ktToward SSW (197°)

Next slack

6:45 AMEDT

Next max flood

0.8 kt9:22 AM

Next max ebb

1.1 kt3:33 AM

Knots along the channel: above the line the flood, running in toward N (354°); below it the ebb, running out toward SSW (197°). Times are Eastern Daylight Time. Today: ebb 1.1 kt 3:33 AM, slack 6:45 AM, flood 0.8 kt 9:22 AM, slack 12:05 PM, ebb 1.2 kt 3:51 PM, slack 7:05 PM, flood 0.9 kt 9:48 PM.

• Small Craft Advisory Small Craft Advisory issued September 26 at 2:19PM EDT until September 28 at 8:00AM EDT by NWS Gray MEUntil Mon 8:00 AM
  Full text

  * WHAT...Northeast winds 15 to 25 kt with gusts up to 35 kt and seas 3 to 6 ft. * WHERE...Penobscot Bay and Casco Bay. * WHEN...Until 8 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft.

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

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.

• Moore Harbor, W ofSubordinate current station3.3 mi
• The Reach, NNE of, Green IslandSubordinate current station5.1 mi
• Heron Neck, Green IslandSubordinate current station5.8 mi
• Laireys Island, south ofSubordinate current station7.0 mi
• Leadbetter Island, E of southern tipSubordinate current station7.0 mi
• Widow Island-Stimpson Island, betweenSubordinate current station7.1 mi
• Mark Island, north ofSubordinate current station7.1 mi
• Leadbetter I., SSW of southern tipSubordinate current station7.2 mi

• Tide times at Vinalhaven, Vinalhaven Island 4.1 mi
• Tide times at Isle Au Haut 6.4 mi
• Tide times at North Haven 8.2 mi
• Forecast for Vinalhaven, ME
• Open the live map with tidal currents
• All tidal current stations in Maine

Tidal current predictions from NOAA’s Center for Operational Oceanographic Products and Services (CO-OPS), station ACT0401, bin 1: original at NOAA. Marine alerts from the National Weather Service.