Marine Weather and Tide Forecast for East Harwich, MA
April 19, 2025 4:48 AM EDT (08:48 UTC) Change Location
 | Sunrise 5:52 AM Sunset 7:27 PM Moonrise 1:21 AM Moonset 9:50 AM |
ANZ254 Coastal Waters From Provincetown Ma To Chatham Ma To Nantucket Ma Out 20 Nm- 405 Am Edt Sat Apr 19 2025
.small craft advisory in effect through Sunday evening - .
Today - SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 8 ft. Wave detail: S 7 ft at 7 seconds and W 2 ft at 4 seconds.
Tonight - SW winds 20 to 25 kt, becoming W 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 5 to 8 ft. Wave detail: S 7 ft at 8 seconds and W 2 ft at 4 seconds. Patchy fog after midnight.
Sun - NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Wave detail: S 4 ft at 8 seconds and nw 3 ft at 4 seconds.
Sun night - NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft. Wave detail: N 3 ft at 5 seconds and S 3 ft at 8 seconds.
Mon and Mon night - S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave detail: N 2 ft at 5 seconds and S 2 ft at 7 seconds.
Tue - S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave detail: S 4 ft at 6 seconds and N 1 foot at 5 seconds. A chance of rain.
Tue night through Wed night - W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 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.
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 405 Am Edt Sat Apr 19 2025
Synopsis for massachusetts and rhode island coastal waters - High pres moves offshore today. A cold front will cross the waters late tonight. Another high pres builds over the region for Mon, with another front passing over the waters Tue. Another high pres should arrive for Wed.
7 Day Forecast for Marine Location Near East Harwich, MA
NEW! Add second zone forecast
| Pleasant Bay Click for Map Sat -- 01:10 AM EDT 0.79 feet Low Tide Sat -- 01:20 AM EDT Moonrise Sat -- 05:53 AM EDT Sunrise Sat -- 06:41 AM EDT 3.23 feet High Tide Sat -- 09:50 AM EDT Moonset Sat -- 01:54 PM EDT 0.44 feet Low Tide Sat -- 07:19 PM EDT 2.77 feet High Tide Sat -- 07:25 PM EDT Sunset Tide / Current data from XTide NOT FOR NAVIGATION |
Pleasant Bay, Quonset Pont, Massachusetts, Tide feet
| 12 am |
| 1 |
| 1 am |
| 0.8 |
| 2 am |
| 0.9 |
| 3 am |
| 1.3 |
| 4 am |
| 1.9 |
| 5 am |
| 2.6 |
| 6 am |
| 3.1 |
| 7 am |
| 3.2 |
| 8 am |
| 2.8 |
| 9 am |
| 2.2 |
| 10 am |
| 1.6 |
| 11 am |
| 1.2 |
| 12 pm |
| 0.9 |
| 1 pm |
| 0.6 |
| 2 pm |
| 0.4 |
| 3 pm |
| 0.6 |
| 4 pm |
| 1.1 |
| 5 pm |
| 1.8 |
| 6 pm |
| 2.4 |
| 7 pm |
| 2.7 |
| 8 pm |
| 2.7 |
| 9 pm |
| 2.2 |
| 10 pm |
| 1.8 |
| 11 pm |
| 1.4 |
| Pollock Rip Channel Click for Map Sat -- 01:19 AM EDT Moonrise Sat -- 02:28 AM EDT -0.00 knots Slack Sat -- 05:07 AM EDT -1.51 knots Max Ebb Sat -- 05:53 AM EDT Sunrise Sat -- 08:13 AM EDT 0.00 knots Slack Sat -- 09:50 AM EDT Moonset Sat -- 11:39 AM EDT 1.79 knots Max Flood Sat -- 03:13 PM EDT -0.00 knots Slack Sat -- 05:45 PM EDT -1.40 knots Max Ebb Sat -- 07:25 PM EDT Sunset Sat -- 08:55 PM EDT 0.00 knots Slack Tide / Current data from XTide NOT FOR NAVIGATION |
Pollock Rip Channel, Massachusetts Current, knots
| 12 am |
| 1.4 |
| 1 am |
| 1 |
| 2 am |
| 0.4 |
| 3 am |
| -0.5 |
| 4 am |
| -1.2 |
| 5 am |
| -1.5 |
| 6 am |
| -1.3 |
| 7 am |
| -0.9 |
| 8 am |
| -0.2 |
| 9 am |
| 0.6 |
| 10 am |
| 1.3 |
| 11 am |
| 1.7 |
| 12 pm |
| 1.8 |
| 1 pm |
| 1.5 |
| 2 pm |
| 1 |
| 3 pm |
| 0.2 |
| 4 pm |
| -0.7 |
| 5 pm |
| -1.3 |
| 6 pm |
| -1.4 |
| 7 pm |
| -1.1 |
| 8 pm |
| -0.6 |
| 9 pm |
| 0.1 |
| 10 pm |
| 0.8 |
| 11 pm |
| 1.2 |
FXUS61 KBOX 190730 AFDBOX
Area Forecast Discussion National Weather Service Boston/Norton MA 330 AM EDT Sat Apr 19 2025
SYNOPSIS
Warm and breezy weather conditions expected today, with scattered showers arriving later this afternoon and evening.
Drier and mild behind a cold front Sunday. Low pressure should pass by to our north Tuesday. High pressure then expected to linger nearby into Friday with above normal temperatures.
NEAR TERM /THROUGH TODAY/
Key Messages:
* Very warm and breezy with high temperatures well into the 70s to lower 80s, despite filtered sun.
Persistent southwest winds will keep pushing warmer air towards our region. Despite some clouds today much of southern New England should get an early taste of summerlike warmth. The exception will be along the south coast, including the Cape and islands. Ocean temperatures are still in the mid 40s, which will prevent much of the immediate coast in the 60s, with some 50s possible across the Cape and islands due to more ocean exposure.
Mainly dry to start the day. A weak mid level shortwave and a accompanying surface trough ahead of an approaching cold front should help to generate scattered showers this afternoon into this evening. The forcing is not particularly strong, but there is modest precipitable water values later today. Not expecting a washout, but there is at least a chance for a few hundredths of rainfall across the western 2/3 of southern New England.
SHORT TERM /TONIGHT THROUGH 6 PM SUNDAY/
Key Messages:
* Cold front brings passing showers early tonight, but with cooler conditions and gusty NW winds up to 45 mph for overnight.
Details:
A cold front then arrives for early evening. Once this front passes by, the arrival of drier air should bring and end to any showers. Anticipating all of our region to be dry by around midnight, with many areas dry earlier than that.
The presence of the cold front will maintain gusty conditions, even as winds become west to northwest. Still expecting wind gusts of 25-40 mph, with the highest gusts over the higher terrain. Outside chance that NW gusts across the higher terrain could get to around 45-50 mph. No current plans for Wind Advisories at this time, but will continue to monitor.
High pressure starts to arrive for Sunday. Thus, winds will start to diminish through the day. Dry conditions expected with near normal high temperatures.
LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/
Key Messages: * Dry for much of Monday with light winds.
* Showers Monday night into Tuesday and another round Friday.
* Temperatures next week slightly above normal.
Monday through Tuesday:
A brief upper level ridge shifts over southern New England for Monday yielding light NW winds. Winds likely switch to onshore (SE) flow along the coastline in the afternoon at 6-12 mph.
Temperatures trend slightly cooler than Sunday with highs in the 50s closer to the coastline and low 60s across interior southern New England. It will be dry much of the day with showers likely not arriving until Friday night. Although there is a low chance (< 20%) for an isolated shower in the early evening timeframe.
A round of showers move through Monday night into Tuesday with light rainfall amounts expected. Tuesday likely stays unsettled for the morning, as any remaining showers exit off to the east, followed by gradually drying conditions behind it in the afternoon. Weak warm advection will bring 850mb temperatures in the 6-10C range Tuesday. This will support above normal temperatures in the 60s and lower 70s with the exception of the Cape/Islands in the 50s.
Tuesday Night through Friday:
A cold front moves through Tuesday night into early Wednesday morning. This will bring a slightly cooler airmass in for Wednesday, but still slightly above normal with highs in the 60s in most places. Similar pattern stays in place through the end of the week with zonal flow and 850mb temperature anomalies signaling slightly above normal temperatures. Ensemble guidance shows a signal for a more unsettled pattern Friday into the weekend with potential for periodic chances for precipitation.
AVIATION /06Z SATURDAY THROUGH WEDNESDAY/
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Today: High confidence. Medium confidence for cigs at Cape/Island terminals
VFR for most airports, although some borderline MVFR/VFR ceilings after 19/21Z for western airports as a cold front approaches. SW winds 10-15 kt to start the morning with gusts 25-30 kts developing between 19/13-16z continuing through this afternoon.
This Evening and Tonight: High confidence.
Mainly VFR. Brief borderline MVFR ceilings may accompany cold front with isolated to widely scattered SHRA in the 22z-03z timeframe. Front moves through after midnight with rapid clearing behind it and switch to NW winds with gusts 25-40 kt.
The higher end of that range possible for higher terrain terminals briefly(ORH).
Sunday...High confidence.
VFR. NW winds with gusts of 20-30 kt. Gusts diminish towards sunset.
KBOS TAF...High confidence in TAF.
KBDL TAF...High confidence in TAF.
Outlook /Sunday Night through Wednesday/...
Sunday Night through Monday: VFR.
Monday Night: Mainly VFR, with local IFR possible. Breezy.
Chance RA.
Tuesday: Mainly VFR, with local MVFR possible. Breezy. Chance RA.
Tuesday Night through Wednesday: VFR.
MARINE
Forecaster Confidence Levels:
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Small Craft Advisories for all waters at some point today into tonight. Rough seas accompany the gusty winds across the ocean- exposed coastal waters. May need to extend advisories for some waters due to marginal wind gusts up to 25 kt, but do not yet have enough confidence to do so at this time. A cold front approaches the waters towards midnight, then moves farther offshore Sunday. Good visibility expected.
Outlook /Sunday Night through Wednesday/...
Sunday Night: Winds less than 25 kt. Seas locally approaching 5 ft.
Monday: Winds less than 25 kt.
Monday Night: Winds less than 25 kt. Chance of rain.
Tuesday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Chance of rain.
Tuesday Night: Winds less than 25 kt. Areas of seas approaching 5 ft.
Wednesday: Winds less than 25 kt.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...Small Craft Advisory until 7 PM EDT this evening for MAZ020- 021.
RI...None.
MARINE...Small Craft Advisory from 10 AM this morning to 7 PM EDT this evening for ANZ230-251.
Small Craft Advisory until 10 PM EDT this evening for ANZ231.
Small Craft Advisory until 1 AM EDT Sunday for ANZ232-234-236.
Small Craft Advisory until 7 AM EDT Sunday for ANZ233.
Small Craft Advisory until 7 PM EDT Sunday for ANZ235-250- 254>256.
Small Craft Advisory until 7 PM EDT Sunday for ANZ237.
Area Forecast Discussion National Weather Service Boston/Norton MA 330 AM EDT Sat Apr 19 2025
SYNOPSIS
Warm and breezy weather conditions expected today, with scattered showers arriving later this afternoon and evening.
Drier and mild behind a cold front Sunday. Low pressure should pass by to our north Tuesday. High pressure then expected to linger nearby into Friday with above normal temperatures.
NEAR TERM /THROUGH TODAY/
Key Messages:
* Very warm and breezy with high temperatures well into the 70s to lower 80s, despite filtered sun.
Persistent southwest winds will keep pushing warmer air towards our region. Despite some clouds today much of southern New England should get an early taste of summerlike warmth. The exception will be along the south coast, including the Cape and islands. Ocean temperatures are still in the mid 40s, which will prevent much of the immediate coast in the 60s, with some 50s possible across the Cape and islands due to more ocean exposure.
Mainly dry to start the day. A weak mid level shortwave and a accompanying surface trough ahead of an approaching cold front should help to generate scattered showers this afternoon into this evening. The forcing is not particularly strong, but there is modest precipitable water values later today. Not expecting a washout, but there is at least a chance for a few hundredths of rainfall across the western 2/3 of southern New England.
SHORT TERM /TONIGHT THROUGH 6 PM SUNDAY/
Key Messages:
* Cold front brings passing showers early tonight, but with cooler conditions and gusty NW winds up to 45 mph for overnight.
Details:
A cold front then arrives for early evening. Once this front passes by, the arrival of drier air should bring and end to any showers. Anticipating all of our region to be dry by around midnight, with many areas dry earlier than that.
The presence of the cold front will maintain gusty conditions, even as winds become west to northwest. Still expecting wind gusts of 25-40 mph, with the highest gusts over the higher terrain. Outside chance that NW gusts across the higher terrain could get to around 45-50 mph. No current plans for Wind Advisories at this time, but will continue to monitor.
High pressure starts to arrive for Sunday. Thus, winds will start to diminish through the day. Dry conditions expected with near normal high temperatures.
LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/
Key Messages: * Dry for much of Monday with light winds.
* Showers Monday night into Tuesday and another round Friday.
* Temperatures next week slightly above normal.
Monday through Tuesday:
A brief upper level ridge shifts over southern New England for Monday yielding light NW winds. Winds likely switch to onshore (SE) flow along the coastline in the afternoon at 6-12 mph.
Temperatures trend slightly cooler than Sunday with highs in the 50s closer to the coastline and low 60s across interior southern New England. It will be dry much of the day with showers likely not arriving until Friday night. Although there is a low chance (< 20%) for an isolated shower in the early evening timeframe.
A round of showers move through Monday night into Tuesday with light rainfall amounts expected. Tuesday likely stays unsettled for the morning, as any remaining showers exit off to the east, followed by gradually drying conditions behind it in the afternoon. Weak warm advection will bring 850mb temperatures in the 6-10C range Tuesday. This will support above normal temperatures in the 60s and lower 70s with the exception of the Cape/Islands in the 50s.
Tuesday Night through Friday:
A cold front moves through Tuesday night into early Wednesday morning. This will bring a slightly cooler airmass in for Wednesday, but still slightly above normal with highs in the 60s in most places. Similar pattern stays in place through the end of the week with zonal flow and 850mb temperature anomalies signaling slightly above normal temperatures. Ensemble guidance shows a signal for a more unsettled pattern Friday into the weekend with potential for periodic chances for precipitation.
AVIATION /06Z SATURDAY THROUGH WEDNESDAY/
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Today: High confidence. Medium confidence for cigs at Cape/Island terminals
VFR for most airports, although some borderline MVFR/VFR ceilings after 19/21Z for western airports as a cold front approaches. SW winds 10-15 kt to start the morning with gusts 25-30 kts developing between 19/13-16z continuing through this afternoon.
This Evening and Tonight: High confidence.
Mainly VFR. Brief borderline MVFR ceilings may accompany cold front with isolated to widely scattered SHRA in the 22z-03z timeframe. Front moves through after midnight with rapid clearing behind it and switch to NW winds with gusts 25-40 kt.
The higher end of that range possible for higher terrain terminals briefly(ORH).
Sunday...High confidence.
VFR. NW winds with gusts of 20-30 kt. Gusts diminish towards sunset.
KBOS TAF...High confidence in TAF.
KBDL TAF...High confidence in TAF.
Outlook /Sunday Night through Wednesday/...
Sunday Night through Monday: VFR.
Monday Night: Mainly VFR, with local IFR possible. Breezy.
Chance RA.
Tuesday: Mainly VFR, with local MVFR possible. Breezy. Chance RA.
Tuesday Night through Wednesday: VFR.
MARINE
Forecaster Confidence Levels:
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Small Craft Advisories for all waters at some point today into tonight. Rough seas accompany the gusty winds across the ocean- exposed coastal waters. May need to extend advisories for some waters due to marginal wind gusts up to 25 kt, but do not yet have enough confidence to do so at this time. A cold front approaches the waters towards midnight, then moves farther offshore Sunday. Good visibility expected.
Outlook /Sunday Night through Wednesday/...
Sunday Night: Winds less than 25 kt. Seas locally approaching 5 ft.
Monday: Winds less than 25 kt.
Monday Night: Winds less than 25 kt. Chance of rain.
Tuesday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Chance of rain.
Tuesday Night: Winds less than 25 kt. Areas of seas approaching 5 ft.
Wednesday: Winds less than 25 kt.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...Small Craft Advisory until 7 PM EDT this evening for MAZ020- 021.
RI...None.
MARINE...Small Craft Advisory from 10 AM this morning to 7 PM EDT this evening for ANZ230-251.
Small Craft Advisory until 10 PM EDT this evening for ANZ231.
Small Craft Advisory until 1 AM EDT Sunday for ANZ232-234-236.
Small Craft Advisory until 7 AM EDT Sunday for ANZ233.
Small Craft Advisory until 7 PM EDT Sunday for ANZ235-250- 254>256.
Small Craft Advisory until 7 PM EDT Sunday for ANZ237.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| CHTM3 | 4 mi | 49 min | 51°F | 30.04 | ||||
| 44090 | 19 mi | 49 min | 50°F | 43°F | 3 ft | |||
| 44020 - NANTUCKET SOUND | 22 mi | 29 min | SSW 14G | 49°F | 46°F | 2 ft | 30.02 | 48°F |
| NTKM3 - 8449130 - Nantucket Island, MA | 31 mi | 49 min | SSW 9.9G | 52°F | 48°F | 30.07 | ||
| BZBM3 - 8447930 - Woods Hole, MA | 38 mi | 49 min | 49°F | 47°F | 30.04 | |||
| NBGM3 | 49 mi | 49 min | SW 11G | 52°F | 30.02 |
Wind History for Nantucket Island, MA
toggle option: (graph/table)
Link to 1 hour of 5 minute data for KCQX
Terminal Aerodrome Forecast (TAF) for KCQX
Wind History Graph: CQX
(wind in knots)
GEOS Local Image of north east
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Boston, MA,
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