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Chatham Harbor, Aunt Lydias Cove, MA tide chart and marine alerts

NOAA station 8447435 · 41.688°N, 69.951°W. Get an email only when the NWS issues a marine or coastal alert here, or the tide runs unusually high or low.

NOAA station 8447435

Chatham Harbor, Aunt Lydias Cove, MA

Tide now4.3 ft↑ rising · predicted

Next high2:26 AM4.4 ft

Next low8:27 AM0.6 ft

Coastal Flood Statement until Fri 6:00 PM

NOAA sensor 5.8 ft at 1:36 AM (+1.6 ft vs prediction)Times EST · NOAA source

Today and tomorrow

Next 7 days Shape drawn between NOAA's predicted highs and lows

7-day tides, sun and moon Times EST · feet above MLLW

Day	High tides	Low tides	Sunrise Sunset	Moon
Fri, Nov 13	2:26 AM 4.4 ft2:15 PM 5.3 ft	8:27 AM 0.6 ft9:23 PM 0.1 ft	6:25 AM 4:22 PM	Waxing crescent 18%
Sat, Nov 14	3:11 AM 4.3 ft2:58 PM 5.1 ft	9:08 AM 0.7 ft10:05 PM 0.1 ft	6:27 AM 4:21 PM	Waxing crescent 25%
Sun, Nov 15	3:56 AM 4.1 ft3:45 PM 4.9 ft	9:52 AM 0.7 ft10:49 PM 0.2 ft	6:28 AM 4:20 PM	Waxing crescent 34%
Mon, Nov 16	4:43 AM 4.1 ft4:35 PM 4.7 ft	10:41 AM 0.6 ft11:35 PM 0.2 ft	6:29 AM 4:19 PM	Waxing crescent 43%
Tue, Nov 17	5:33 AM 4.1 ft5:30 PM 4.6 ft	11:36 AM 0.6 ft	6:30 AM 4:19 PM	First quarter 53%
Wed, Nov 18	6:22 AM 4.2 ft6:27 PM 4.5 ft	12:22 AM 0.2 ft12:34 PM 0.5 ft	6:31 AM 4:18 PM	Waxing gibbous 63%
Thu, Nov 19	7:09 AM 4.5 ft7:24 PM 4.5 ft	1:10 AM 0.2 ft1:33 PM 0.4 ft	6:33 AM 4:17 PM	Waxing gibbous 73%

Tides: NOAA CO-OPS predictions. Sun and moon: computed for this station's coordinates with NOAA's solar equations and standard lunar formulas.

Today Friday, Nov 13

Tide	Time (EST)	Height
High	2:26 AM	4.4 ft
Low	8:27 AM	0.6 ft
High	2:15 PM	5.3 ft
Low	9:23 PM	0.1 ft

Tomorrow Saturday, Nov 14

Tide	Time (EST)	Height
High	3:11 AM	4.3 ft
Low	9:08 AM	0.7 ft
High	2:58 PM	5.1 ft
Low	10:05 PM	0.1 ft

Sunday Sunday, Nov 15

Tide	Time (EST)	Height
High	3:56 AM	4.1 ft
Low	9:52 AM	0.7 ft
High	3:45 PM	4.9 ft
Low	10:49 PM	0.2 ft

Active NWS alerts

Coastal Flood Statement until Fri 6:00 PM. Barnstable; Nantucket. NWS Boston/Norton MA

Marine forecast ANZ254 · Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM

Rest Of Tonight: NE winds 20 to 25 kt with gusts up to 35 kt. Seas 6 to 8 ft. Wave Detail: E 8 ft at 7 seconds and SW 3 ft at 6 seconds. Patchy fog. A chance of rain.
Fri: NE winds 20 to 25 kt with gusts up to 35 kt. Seas 6 to 8 ft. Wave Detail: NE 8 ft at 7 seconds and SE 4 ft at 12 seconds. A chance of rain. Patchy fog in the afternoon.
Fri Night: N winds 15 to 20 kt with gusts up to 35 kt. Seas 5 to 8 ft. Wave Detail: N 8 ft at 7 seconds and S 3 ft at 9 seconds. A chance of rain in the evening.
Sat: NW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: N 5 ft at 6 seconds and S 3 ft at 9 seconds.
Sat Night and Sun: NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft at 7 seconds and NW 3 ft at 4 seconds. A chance of rain in the evening. A chance of rain through the day.
Sun Night: NW winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: N 3 ft at 6 seconds and SE 1 foot at 10 seconds.
Mon through Tue Night: W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height.

National Weather Service, issued Fri 1:03 AM EST. Official forecast for ANZ254

Unusual tides here

We flag a predicted high at or above 8.1 ft MLLW (the NWS minor flood stage for this station). We flag a predicted low at or below −1.0 ft MLLW. Mean higher high water is 5.2 ft.

No predicted tide in the next few days crosses either line.

Official sources

Predictions are astronomical tides. Wind and pressure can move the real water level a foot or more. NOAA's sensor here read 5.8 ft at 1:36 AM.

Nearby stations

Sesuit Harbor, East Dennis, MA 11 mi
Hyannis Port, MA 18 mi
Nantucket, MA 29 mi
Cape Cod Canal, Sagamore, MA 31 mi
Woods Hole, MA 39 mi
New Bedford Harbor, Marine Terminal, MA 50 mi

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Chatham Harbor, Aunt Lydias Cove, MA: common questions

When is the next high tide at Chatham Harbor, Aunt Lydias Cove, MA?

NOAA predicts the next high tide at Chatham Harbor, Aunt Lydias Cove, MA at Fri 2:26 AM EST, 4.4 ft above mean lower low water (MLLW).

When is the next low tide at Chatham Harbor, Aunt Lydias Cove, MA?

The next predicted low tide is at Fri 8:27 AM EST, 0.6 ft relative to MLLW.

Is there a marine alert for Chatham Harbor, Aunt Lydias Cove, MA right now?

Yes: Coastal Flood Statement (National Weather Service).

What are these tide heights measured from?

Heights are in feet above mean lower low water (MLLW), the average of the lower of the two daily low tides. A negative number means the water is below that average.

How do I get an email when something happens at Chatham Harbor, Aunt Lydias Cove, MA?

Enter your email at the top of this page. You get one confirmation email, then nothing until the NWS issues a marine or coastal alert here or the tide is predicted unusually high or low. Unsubscribe in one click.