Winthrop Town, MA Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Winthrop Town, MA


December 2, 2023 10:24 PM EST (03:24 UTC)
Sunrise 6:52AM   Sunset 4:13PM   Moonrise  10:04PM   Moonset 12:29PM 

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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ANZ230 Boston Harbor- 1001 Pm Est Sat Dec 2 2023
Overnight..NE winds 5 to 10 kt. Waves 1 foot or less. Patchy fog. A slight chance of rain. Vsby 1 nm or less.
Sun..E winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Areas of fog. Rain. Vsby 1 nm or less.
Sun night..E winds 10 to 15 kt with gusts up to 25 kt, becoming N 5 to 10 kt after midnight. Waves 2 to 3 ft. Areas of fog. Rain. Vsby 1 to 3 nm.
Mon..W winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Waves around 2 ft. A chance of rain.
Mon night..NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Waves 1 foot or less, then around 2 ft after midnight. A chance of rain.
Tue..NW winds 15 to 20 kt, diminishing to around 10 kt in the afternoon. Waves around 2 ft in the morning, then 1 foot or less.
Tue night..N winds 5 to 10 kt. Waves 1 foot or less. A chance of rain.
Wed..N winds around 10 kt. A chance of rain and snow.
Wed night through Thu night..W winds 10 to 15 kt with gusts up to 20 kt.
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 Pm Est Sat Dec 2 2023
Synopsis for massachusetts and rhode island coastal waters.. A weak frontal boundary across new england combined with high pressure offshore, will provide weak sw winds across the ri and ma waters Saturday. Morning fog burns off and gives way to a mostly dry day. Low pressure approaches from the southwest Sunday and combined with high pressure over quebec, expect increasing ne winds along with rain Sunday across the new england waters. Low pressure then moves offshore Monday, with a drying and cooling trend, along with a wind shift to the north. A gale center may develop off the mid atlantic coast the middle of next week, then likely tracking well south of new england, but this system needs to be watched given some uncertainty.


7 Day Forecast for Marine Location Near Winthrop Town, MA
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Area Discussion for - Boston, MA
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FXUS61 KBOX 030257 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 957 PM EST Sat Dec 2 2023

SYNOPSIS
Dry weather tonight but patchy dense fog as well. Periods of chilly rain and fog on tap for Sunday into Sunday night in association with low pressure. Mainly dry weather returns Monday as the system exits. Dry weather dominates Tuesday through Thursday, but fairly cloudy with near to below normal temperatures. Next shot for more widespread precipitation might not be until the end of next weekend or early next week.

NEAR TERM /UNTIL 6 AM SUNDAY MORNING/

10 PM Update...

Weak frontal boundary passed through the region late Saturday afternoon with a wind shift to the WNW. However, not much of an airmass change with dew pts still in the 40s regionwide, upper 30s western-central MA. This moist airmass combined with light winds and a thin cirrus overcast, is yielding areas of radiational fog, locally dense in spots. This radiational fog will erode somewhat overnight as thicker WAA cloud canopy overspreads the region. Current forecast handles this well, therefore no changes with this update.

335 PM Update...

* Mostly cloudy tonight with lows mainly upper 30s/lower 40s * Light rain arrives toward daybreak in parts of CT/RI/SE MA

Mostly cloudy conditions persisted during the mid to late afternoon hours across most of southern New England. Visible satellite imagery did reveal a few breaks developing and guidance supports this trend for a time into the evening. So while we may see a few breaks into this evening...low pressure will be lifting northeastward from the southeast overnight. This will result in any of the breaks that develop filling back in later this evening. Much of the night should remain dry though...but do expect some light rain to arrive toward daybreak in parts of CT/RI/SE MA as forcing for ascent increases.
Overnight low temps will only be in the upper 30s and lower 40s given the cloudy skies and modest dewpoints in place for early December standards.

SHORT TERM /6 AM SUNDAY MORNING THROUGH SUNDAY NIGHT/

Key Points...

* Chilly with widespread rain on Sun with highs in the upper 30s/40s * Areas of light rain/drizzle & fog linger Sun night * Any brief mix with snow confined to near 1500 ft with little impact

Details...

Sunday and Sunday night...

A shortwave trough will be lifting into the Great Lakes on Sunday.
This will back the mid level flow across the region as the initial surface low lifts northeast into the eastern Great Lakes. There is a high pressure system in Quebec that will combined with a secondary weak low pressure system developing off the southeast New England coast.

All of the above will combined to generate southwest flow aloft over a relatively shallow cool dome of air at the surface. This will generate widespread chilly rain Sunday which should have overspread most of the region by mid-late morning and continue through the afternoon. While the deeper moisture/forcing will lift northeast of our region Sunday evening...moist northeast low level flow will continue to result in periods of light rain...drizzle and fog Sunday night especially in central and eastern MA. We should see most areas finally dry out near daybreak Monday.

Thermal profiles are just too warm for the vast majority of the region to support anything but rain. It may become marginally cold enough for a brief mix/change with snow across the highest terrain of far northwest/north central MA towards 1500 feet
However
even if this occurs any accumulations would be very minor with little impact
Nonetheless
it will be rather raw/chilly on Sunday with temps mainly in the upper 30s to the middle 40s.

LONG TERM /MONDAY THROUGH SATURDAY/

Monday

A deamplifying short-wave to the north will slowly progress eastward on Monday while a secondary short-wave advancing across The Midwest will track south of southern New England on Monday. This pattern will support westerly flow across The Northeast which will keep a mild air mass in place throughout the day. This air mass will be characterized by 925 hPa temps just over 0 Celsius which will support above normal temps in the upper 40s to low 50s on Monday afternoon. Lingering low-level moisture will result in more clouds than sun and maybe a few spotty showers, but overall it looks to be a dry start to the week. As the secondary short-wave ejects south and east of southern New England, cyclonic flow to the north will result in a wind shift to the northwest which will advect cooler air over southern New England. This will begin a cooling trend that will persist through Thursday.

Tuesday through Thursday

Cyclonic flow aloft will prevail through Thursday. This will support persistent northwest flow and CAA that will support a cooling trend Tuesday through Thursday. Low/High temps Tuesday morning/afternoon in the upper 20s-low 30s/upper 30s- low 40s will fall to upper teens-low 20s/ mid-upper 30s by Thursday. Weather looks to be dry during this period with the exception of perhaps a few spotty rain/snow showers driven by diurnal instability.

Late Week/Early Next Weekend

A mid-level ridge axis builds east of southern New England Thursday night into Friday. This will end the cooling trend as return flow from the south advects warmer air into the Northeast to end the week. Northern stream short-wave energy is forecast to be digging over The Great Lakes late next week which will bring our next opportunity for widespread precipitation Friday night into Saturday.
Details are vague at this time range so stay tuned for further details.

AVIATION /03Z SUNDAY THROUGH THURSDAY/
Forecast Confidence Levels:

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

00Z TAF Update...

Through 12Z...High Confidence in Trends

Generally VFR to start with the exception of ORH and The Cape/Islands terminals. However, ceilings will gradually lower to MVFR and eventually IFR/LIFR by 06Z as precip approaches from the west. Light/variable winds becoming steady out of the northeast from 5 to 10 knots by 12Z.

Sunday...High Confidence

Widespread IFR/LIFR with periods of rain and fog. NE winds 5 to 15 knots with stronger winds near the coast where periods of 20-25 knot gusts will be possible.

Sunday Night...High Confidence

IFR-LIFR conditions persist much of the night...but perhaps a bit of improvement by 12z Monday across CT/RI/SE MA. While the steadier/heavier rain will come to an end in most spots sometime Sunday night...light showers/drizzle and fog will persist longer especially in central and NE MA. NE winds 5 to 15 knots to more of a light W direction by daybreak Monday.

KBOS Terminal...High confidence in TAF trends, lower on exact timing.

KBDL Terminal...High confidence in TAF trends, lower on exact timing.

Outlook /Monday through Thursday/...

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

Monday Night: VFR. Breezy. Slight chance RA.

Tuesday: Mainly VFR, with local MVFR possible. Breezy.

Tuesday Night: Mainly VFR, with local MVFR possible. Slight chance RA, slight chance SN.

Wednesday: Mainly VFR, with local MVFR possible. Breezy. Chance RA, slight chance SN.

Wednesday Night through Thursday: VFR. Breezy.

MARINE
Forecaster Confidence Levels:

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

Tonight...High Confidence.

Winds & seas will remain below small craft advisory thresholds.
Light winds this evening will shift to the NE overnight in response to a wave of low pressure developing off the mid-Atlantic coast.

Sunday and Sunday night...High Confidence.

A wave of low pressure will track south of our waters Sun into Sun night. This coupled with high pressure across Quebec will generate modest northeast winds across the region Sun into Sun evening with gusts between 20 and 30 knots. Seas will also build to between 3 and 6 feet...so small craft headlines remain posted for most waters.
Lastly...areas of rain and fog will reduce vsbys for mariners.

Outlook /Monday through Thursday/...

Monday through Monday Night: Winds less than 25 kt. Seas up to 5 ft. Chance of rain.

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

Tuesday Night: Winds less than 25 kt. Chance of rain.

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

Wednesday Night: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Seas up to 5 ft. Chance of rain, slight chance of snow.

Thursday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of seas approaching 5 ft. Slight chance of rain.

BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory from 11 AM Sunday to 7 AM EST Monday for ANZ231-250-251-254.
Small Craft Advisory from 5 AM Sunday to 7 AM EST Monday for ANZ232>235-237-255-256.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
BHBM3 - 8443970 - Boston, MA 4 mi55 min 47°F 30.05
44013 - BOSTON 16 NM East of Boston, MA 18 mi45 min 0G1.9 48°F 50°F30.0646°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 24 mi141 min N 7.8G9.7 49°F 50°F2 ft30.05
44018 - SE Cape Cod 30NM East of Nantucket, MA 45 mi45 min NW 3.9G3.9 49°F 49°F30.0647°F
FOXR1 - 8454000 - Providence, RI 45 mi55 min 0G1.9 45°F 45°F30.05
IOSN3 - Isle of Shoals, NH 45 mi85 min NNW 8G8 46°F 30.0341°F
PVDR1 46 mi55 min E 1.9G1.9 46°F 30.0645°F
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 47 mi55 min 0G0 45°F 30.06
FRVM3 - 8447386 - Fall River, MA 47 mi55 min 44°F 46°F30.07
BGXN3 - Great Bay Reserve, NH 48 mi100 min 0 35°F 30.0435°F
FRXM3 48 mi55 min 45°F 44°F
CPTR1 - 8452944 - Conimicut Light, RI 49 mi55 min 0G1 44°F 47°F30.05

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Wind History for Providence, RI
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KBOS GENERAL EDWARD LAWRENCE LOGAN INTL,MA 2 sm14 mincalm6 smOvercast Mist 45°F43°F93%30.06
KBVY BEVERLY RGNL,MA 15 sm19 mincalm1/4 sm-- Fog 37°F37°F100%30.04
KOWD NORWOOD MEMORIAL,MA 16 sm22 mincalm1 smPartly Cloudy37°F36°F93%30.06
KBED LAURENCE G HANSCOM FLD,MA 18 sm16 mincalm1/4 sm--37°F36°F93%30.04

Wind History from BOS
(wind in knots)


Tide / Current for Belle Isle Inlet entrance, Boston Harbor, Massachusetts
   
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Belle Isle Inlet entrance
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Sat -- 02:45 AM EST     8.70 feet High Tide
Sat -- 06:54 AM EST     Sunrise
Sat -- 08:33 AM EST     1.67 feet Low Tide
Sat -- 11:29 AM EST     Moonset
Sat -- 02:48 PM EST     9.73 feet High Tide
Sat -- 04:12 PM EST     Sunset
Sat -- 09:04 PM EST     Moonrise
Sat -- 09:13 PM EST     0.70 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Belle Isle Inlet entrance, Boston Harbor, Massachusetts, Tide feet
12
am
5.2
1
am
7.1
2
am
8.4
3
am
8.7
4
am
8
5
am
6.6
6
am
4.9
7
am
3.1
8
am
1.9
9
am
1.8
10
am
2.8
11
am
4.4
12
pm
6.2
1
pm
8
2
pm
9.4
3
pm
9.7
4
pm
9
5
pm
7.5
6
pm
5.6
7
pm
3.5
8
pm
1.7
9
pm
0.7
10
pm
1.1
11
pm
2.2



Tide / Current for Boston Harbor, Massachusetts Current
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Boston Harbor
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Sat -- 02:02 AM EST     -0.00 knots Slack
Sat -- 06:22 AM EST     -0.95 knots Max Ebb
Sat -- 06:54 AM EST     Sunrise
Sat -- 08:27 AM EST     0.00 knots Slack
Sat -- 11:28 AM EST     Moonset
Sat -- 11:33 AM EST     0.96 knots Max Flood
Sat -- 02:13 PM EST     -0.00 knots Slack
Sat -- 04:12 PM EST     Sunset
Sat -- 06:47 PM EST     -1.08 knots Max Ebb
Sat -- 09:00 PM EST     0.00 knots Slack
Sat -- 09:04 PM EST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Boston Harbor, Massachusetts Current, knots
12
am
1
1
am
0.6
2
am
0
3
am
-0.4
4
am
-0.7
5
am
-0.8
6
am
-0.9
7
am
-0.9
8
am
-0.4
9
am
0.4
10
am
0.9
11
am
0.9
12
pm
0.9
1
pm
0.7
2
pm
0.1
3
pm
-0.4
4
pm
-0.7
5
pm
-0.9
6
pm
-1
7
pm
-1.1
8
pm
-0.8
9
pm
-0
10
pm
0.7
11
pm
0.9




Weather Map
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GEOS Local Image of north east   
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Boston, MA,



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