Wreck Shoal-Eldridge Shoal, between tidal current predictions

Now

Ebb 0.3 ktToward WSW (245°)

Next slack

6:03 PMEDT

Next max flood

1.8 kt9:01 PM

Next max ebb

1.7 ktMon 3:14 AM

Knots along the channel: above the line the flood, running in toward ENE (62°); below it the ebb, running out toward WSW (245°). Times are Eastern Daylight Time. Today: ebb 1.6 kt 2:36 AM, slack 5:44 AM, flood 1.8 kt 8:45 AM, slack 12:13 PM, ebb 1.6 kt 2:56 PM, slack 6:03 PM, flood 1.8 kt 9:01 PM.

• Small Craft Advisory Small Craft Advisory issued September 27 at 3:09PM EDT until September 28 at 8:00AM EDT by NWS Boston/Norton MAUntil Mon 8:00 AM
  Full text

  * WHAT...East winds 10 to 20 kt with gusts up to 25 kt and seas 4 to 6 feet. * WHERE...Nantucket Sound. * 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.

• Hedge Fence Lighted Gong Buoy 22Subordinate current station5.1 mi
• Cotuit Bay entrance (Bluff Point)Subordinate current station5.3 mi
• Waquoit Bay entranceSubordinate current station5.4 mi
• Cape Poge Lt., 3.2 miles northeast ofSubordinate current station5.4 mi
• Hedge Fence-L'Hommedieu Shoal, betweenSubordinate current station5.9 mi
• East Chop-Squash Meadow, betweenSubordinate current station7.3 mi
• Broken Ground-Horseshoe Shoal, betweenSubordinate current station7.5 mi
• East Chop, 1 mile north ofSubordinate current station7.5 mi

• Tide times at Poponesset Island, Poponesset Bay 4.1 mi
• Tide times at Cotuit Highlands 5.2 mi
• Tide times at Oak Bluffs 8.4 mi
• Forecast for Mashpee Neck, MA
• Open the live map with tidal currents
• All tidal current stations in Massachusetts

Tidal current predictions from NOAA’s Center for Operational Oceanographic Products and Services (CO-OPS), station ACT1761, bin 1: original at NOAA. Marine alerts from the National Weather Service.