East Harwich, MA Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for East Harwich, MA


November 30, 2023 12:46 PM EST (17:46 UTC)
Sunrise 6:45AM   Sunset 4:13PM   Moonrise  7:53PM   Moonset 11:10AM 

NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION. Privacy and Cookie policy

Marine Forecasts
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ANZ254 Coastal Waters From Provincetown Ma To Chatham Ma To Nantucket Ma Out 20 Nm- 1001 Am Est Thu Nov 30 2023
.small craft advisory in effect from 4 pm est this afternoon through Friday morning...
This afternoon..SW winds around 15 kt with gusts up to 20 kt. Seas 3 to 4 ft.
Tonight..SW winds around 15 kt with gusts up to 25 kt. Seas 3 to 5 ft.
Fri..SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft.
Fri night..SW winds 5 to 10 kt. Seas 2 to 3 ft. Rain.
Sat..W winds 5 to 10 kt. Seas 2 to 4 ft. A chance of rain.
Sat night..NW winds around 5 kt, becoming ne after midnight. Seas 2 to 4 ft. A chance of rain.
Sun..NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of rain.
Sun night..E winds around 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Rain likely.
Mon..N winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Rain likely.
Mon night..NW winds around 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. A chance of rain.
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.

ANZ200 1001 Am Est Thu Nov 30 2023
Synopsis for massachusetts and rhode island coastal waters.. High pres builds to our south today through Fri. A frontal system moves through later on Fri into early Sat. The pattern remains activate late Sat into early next week. Still a lot of uncertainty at this point.


7 Day Forecast for Marine Location Near East Harwich, MA
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Area Discussion for - Boston, MA
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FXUS61 KBOX 301723 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 1223 PM EST Thu Nov 30 2023

SYNOPSIS
High pressure provides quiet weather pattern through Friday morning. Then a quick shot of light rain late Friday into very early Saturday morning. An active weather pattern late Saturday into early next week, but lots of uncertainty on how things evolve at this point. Temperatures trending near to below normal as we head into the middle of the week.

NEAR TERM /UNTIL 6 PM THIS EVENING/
Update: 10 AM

Minor adjustment to sky cover over the Islands due to strato cu that has developed off the westerly wind. Do expect those clouds to dissipate in the next couple of hours with the wind dropping to the southwest. Otherwise forecast remains well on track.

Please see previous forecast discussion below.

300 AM update...

* Noticeably milder today, although seasonable for late November

Mid level warm front moving across SNE during the predawn hours and is accompanied by SCT-BKN mid level cloudiness. As this feature moves east, expecting decreasing clouds later this morning, giving way to partly to mostly sunny conditions. Low level WAA results in 925 mb rising from -2C at 12z to about +4C by 00z. This will support highs this afternoon in the 40s to near 50 along the south coast, as SW winds stream across SSTs in the low 50s. These highs are right on track for this time of year, but will feel noticeably milder than the past two days. This combined with a fair amount of sunshine, will provide tranquil weather for the last day of Nov. A bit of a SW breeze with speeds from 10 to 15 mph, gusting up to 20 mph across Cape Cod and the Islands. Overall, a very nice day for this time of year.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM FRIDAY/
300 AM update...

* Temps rising into the low/mid 50s Fri for RI & eastern MA

Warm sector airmass slowly advects up the eastern seaboard, with dew pts rising into the 30s Friday, except low 40s across RI and eastern MA. Dry weather prevails Thu night and not as chilly as past nights, as airmass continues to modify. Lows Thu night, 30s regionwide with low 40s Cape Cod and the islands.

Friday begins dry along with some morning sunshine, then increasing clouds as next short wave and WAA precip approaches from the SW.
Modest low/mid level SW jet will provide WAA rains to overspread the area late in the day from west to east. SW flow will advect 925 mb temps to about +7C across much of SNE. Despite increasing clouds, strong low level WAA will yield highs to climb into the low and mid 50s, 40s across the interior. SW winds 10 to 15 mph with gusts up to 20 mph possible across Cape Cod and the Islands.

LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/
300 AM update...

Highlights

* Quick shot of light rain late Fri into early Sat.

* Active pattern late Sat through early next week. Mostly weak/progressive systems, but could see a stronger system early next week. Details still uncertain at this point. Temps trending near to below normal.

Friday Night through early Saturday...

A progressive deamplifying shortwave will be situated over the eastern Great Lakes Fri eve. The shortwave quickly lifts into Nova Scotia by very early Sat AM. A fast moving frontal system moves through.

A quick shot of light rain expected with this system. One change made in the latest update was to ramp down PoPs much quicker than the default NBM. This falls more in line with the latest deterministic and ensemble guidance. Would actually not be surprised if we need to continue dialing back PoPs on the back end as am anticipating a 3-6 hr period of light rain as the upper forcing quickly moves through. Will be mild with overnight lows in the mid/upper 30s across the interior and the low/mid 40s for the coastal plain.

Later on Saturday into early next week...

Active pattern with several shortwaves/troughs lifting into and through the region as flow becomes more cyclonic. As was the case yesterday is quite difficult at this point to time specific disturbances along with there intensity and locations as guidance is all over the place. There are signals for a more amplified system in the Mon/Tue timeframe, but still considerable uncertainty.

At this point the ECMWF/EPS continues to lean toward a stronger system in the Mon/Tue timeframe. The GEM/GEPS is a sort of middle ground, while the GFS/GEFS leans toward a weaker solution. Would like more consistency amongst guidance before getting into specific details. For now have just stuck with the default NBM given the uncertainty. The NAEFS SATA table highlights wind speeds being 2-2.5 STD above model climatology, but mostly in the zonal component of the wind (west-east). We've also got PWATs between 2-3 STD above model climatology. Definitely will need to keep an eye on how things evolve in the coming days.

Confidence a bit higher in temps trending near to perhaps cooler than normal for this period.

Mid week...

Drier weather anticipated during this timeframe. At this point odds will favor cooler than seasonable temperatures with flow becoming NW/Nly for much of the period. This will filter in -5 to -10 degree Celsius temps at 925 hPa. This matches up nicely with CPCs latest 6- 10 Day temp outlook of odds being slightly tilted toward below normal temps.

AVIATION /18Z THURSDAY THROUGH MONDAY/
Forecast Confidence Levels:

Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.

Rest of Today...High confidence.

VFR with SW winds between 5-10 kts. Winds around 10-15 kts across the Cape/Islands with some gusts up to 20 kts.

Tonight...High confidence.

VFR with SW winds around 5-10 kts. Still 10-15 kts across the Cape/Islands. Will have a SW low level jet of 30-40+ kts sliding through. Given the boundary layer decouples have added LLWS mention to all terminals away from the south coast. Timing wise looking most likely between roughly 03-09Z.

Friday...High confidence.

Dry weather and VFR to begin the day, but by days end, light rain overspreads much of the region from west to east with VFR cloud bases, but MVFR across western MA. SW winds 10-15 kt, gusting up to 20 kt possible Cape Cod and the Islands.

KBOS Terminal...High confidence in TAF.

VFR with dry weather and SW winds at 5-10 kts. Strong SW jet slides through tonight, so will have LLWS concerns from roughly 03-09Z.

KBDL Terminal...High confidence in TAF.

VFR with dry weather and SW winds at 5-10 kts. Strong SW jet slides through tonight, so will have LLWS concerns from 02-08Z.

Outlook /Friday Night through Monday/...

Friday Night: Mainly VFR, with local IFR possible. RA likely.

Saturday: Mainly VFR, with local MVFR possible. Slight chance RA.

Saturday Night: Mainly VFR, with areas IFR possible. Slight chance RA.

Sunday: Mainly IFR, with areas VFR possible. Breezy. Chance RA.

Sunday Night: Mainly VFR, with areas IFR possible. Breezy.
Chance RA.

Monday: Mainly VFR, with local MVFR possible. Breezy. RA likely.

MARINE
Forecaster Confidence Levels:

Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.

300 AM update...

Today...high confidence.

SW winds 10-15 kt, with a few gusts up to 20 kt possible. Dry weather and good vsby to the horizon prevails.

Tonight...high confidence.

Low level SW jet increases, resulting in surface winds SW 15-25 kt, gusting up to 30 possibly at times across the eastern MA waters. Dry weather and good vsby prevail.

Friday...high confidence.

Dry weather to begin the day, but light rain overspreads all waters by late afternoon. SW winds 10-15 kt, gusting up to 20 kt at times.

Outlook /Friday Night through Monday/...

Friday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Chance of rain.

Friday Night: Winds less than 25 kt. Seas locally approaching 5 ft. Chance of rain.

Saturday: Winds less than 25 kt. Areas of seas approaching 5 ft. Slight chance of rain.

Saturday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Chance of rain.

Sunday: Winds less than 25 kt. Seas locally approaching 5 ft.
Chance of rain.

Sunday Night: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Seas up to 5 ft. Rain likely.

Monday: Moderate risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of rough seas. Rain likely.

BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory from 4 PM this afternoon to 10 AM EST Friday for ANZ231>235-237-250-251-254>256.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
CHTM3 4 mi46 min WSW 8.9G15 44°F 42°F
44090 19 mi46 min 44°F 50°F1 ft
44020 - NANTUCKET SOUND 22 mi36 min WSW 12G14 44°F 45°F30.1231°F
WAXM3 - Waquoit Bay Reserve, MA 30 mi61 min S 2.9 44°F 30.1223°F
NTKM3 - 8449130 - Nantucket Island, MA 31 mi46 min W 8G12 45°F 43°F30.14
44018 - SE Cape Cod 30NM East of Nantucket, MA 34 mi36 min SSW 16G19 42°F 49°F30.0929°F
BZBM3 - 8447930 - Woods Hole, MA 38 mi46 min 43°F 46°F30.13
NBGM3 49 mi46 min WSW 9.9G16 44°F 30.11

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Wind History for Nantucket Island, MA
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KCQX CHATHAM MUNI,MA 3 sm54 minSSW 11G1810 smClear45°F27°F49%30.13
KHYA BARNSTABLE MUNIBOARDMAN/POLANDO FIELD,MA 15 sm50 minSW 1010 smClear45°F25°F45%30.11

Wind History from CQX
(wind in knots)


Tide / Current for Pleasant Bay, Quonset Pont, Massachusetts
   
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Pleasant Bay
Click for Map
Thu -- 03:19 AM EST     3.02 feet High Tide
Thu -- 06:46 AM EST     Sunrise
Thu -- 10:02 AM EST     0.32 feet Low Tide
Thu -- 10:09 AM EST     Moonset
Thu -- 03:26 PM EST     3.53 feet High Tide
Thu -- 04:10 PM EST     Sunset
Thu -- 06:52 PM EST     Moonrise
Thu -- 10:42 PM EST     -0.11 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Pleasant Bay, Quonset Pont, Massachusetts, Tide feet
12
am
0.8
1
am
1.7
2
am
2.6
3
am
3
4
am
2.9
5
am
2.6
6
am
2.2
7
am
1.7
8
am
1.1
9
am
0.6
10
am
0.3
11
am
0.6
12
pm
1.2
1
pm
2.1
2
pm
3
3
pm
3.5
4
pm
3.5
5
pm
3
6
pm
2.5
7
pm
1.9
8
pm
1.3
9
pm
0.6
10
pm
0
11
pm
-0.1



Tide / Current for Pollock Rip Channel, Massachusetts Current
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Pollock Rip Channel
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Thu -- 01:53 AM EST     -1.62 knots Max Ebb
Thu -- 04:59 AM EST     0.00 knots Slack
Thu -- 06:45 AM EST     Sunrise
Thu -- 08:18 AM EST     1.72 knots Max Flood
Thu -- 10:08 AM EST     Moonset
Thu -- 11:12 AM EST     -0.00 knots Slack
Thu -- 02:00 PM EST     -1.71 knots Max Ebb
Thu -- 04:11 PM EST     Sunset
Thu -- 05:07 PM EST     0.00 knots Slack
Thu -- 06:53 PM EST     Moonrise
Thu -- 08:44 PM EST     2.11 knots Max Flood
Thu -- 11:56 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Pollock Rip Channel, Massachusetts Current, knots
12
am
-0.8
1
am
-1.5
2
am
-1.6
3
am
-1.4
4
am
-0.8
5
am
0
6
am
0.8
7
am
1.4
8
am
1.7
9
am
1.6
10
am
1.1
11
am
0.2
12
pm
-0.8
1
pm
-1.5
2
pm
-1.7
3
pm
-1.5
4
pm
-1
5
pm
-0.1
6
pm
0.8
7
pm
1.6
8
pm
2
9
pm
2.1
10
pm
1.8
11
pm
1




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Boston, MA,



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