Patience I. and Warwick Neck, between tidal current predictions

Now

Flood 0.4 ktToward NE (40°)

Next slack

8:49 PMEDT

Next max flood

0.7 ktSun 5:52 AM

Next max ebb

1.0 kt11:38 PM

Knots along the channel: above the line the flood, running in toward NE (40°); below it the ebb, running out toward SW (224°). Times are Eastern Daylight Time. Today: slack 1:40 AM, flood 0.7 kt 5:21 AM, slack 8:35 AM, ebb 1.0 kt 11:23 AM, slack 2:01 PM, flood 0.7 kt 5:37 PM, slack 8:49 PM, ebb 1.0 kt 11:38 PM.

• Storm Warning Storm Warning issued September 26 at 12:26PM EDT until September 27 at 10:00AM EDT by NWS Boston/Norton MAUntil Sun 10:00 AM
  Full text

  * WHAT...Northeast winds 20 to 25 kt with gusts up to 50 kt and waves 2 to 4 feet. * WHERE...In Massachusetts coastal waters, Boston Harbor. In Rhode Island coastal waters, Narragansett Bay. * WHEN...Until 10 AM EDT Sunday. * IMPACTS...Storm force winds and hazardous waves will capsize or damage vessels and reduce visibility.

  Mariners should remain in port, alter course, and/or secure the vessel for severe 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.

• Patience Island, narrows east ofSubordinate current station1.1 mi
• Hog Island, northwest ofSubordinate current station4.2 mi
• Nayatt Point, WNW ofSubordinate current station4.5 mi
• Quonset PointHarmonic current station5.6 mi
• Mount Hope BridgeSubordinate current station6.2 mi
• Dyer Island, west ofSubordinate current station6.3 mi
• Warren, Warren RiverSubordinate current station6.3 mi
• Conanicut Point, ENE ofSubordinate current station6.3 mi

• Tide times at East Greenwich 3.7 mi
• Tide times at Conimicut Light 4.0 mi
• Tide times at Bristol Highlands 4.7 mi
• Forecast for Warwick, RI
• Open the live map with tidal currents
• All tidal current stations in Rhode Island

Tidal current predictions from NOAA’s Center for Operational Oceanographic Products and Services (CO-OPS), station ACT2241, bin 1: original at NOAA. Marine alerts from the National Weather Service.