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

May 19, 2024 5:53 AM EDT (09:53 UTC) Change Location
Sunrise 5:16 AM   Sunset 8:04 PM
Moonrise 4:19 PM   Moonset 3:19 AM 
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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.

Marine Forecasts
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ANZ230 Boston Harbor- 405 Am Edt Sun May 19 2024

Today - NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. Vsby 1 to 3 nm.

Tonight - NE winds 5 to 10 kt. Waves 2 to 3 ft in the evening, then 1 foot or less.

Mon - E winds 5 to 10 kt. Waves 1 foot or less.

Mon night - SE winds 5 to 10 kt, becoming sw after midnight. Waves 1 foot or less.

Tue and Tue night - SW winds 10 to 15 kt. Waves around 2 ft.

Wed through Thu - SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of.

Thu night - SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers.
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 Sun May 19 2024

Synopsis for massachusetts and rhode island coastal waters - Slow moving low pres will continue to bring cloudy, showery weather with northeast breezes today. High pres over coastal maine then settles over the waters on Mon and continues thru Wed. A cold front brings the risk for showers and Thunderstorms on Thurs. High pres then builds in for Fri into early memorial day weekend.


7 Day Forecast for Marine Location Near Weymouth Town, MA
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Area Discussion for - Boston, MA
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FXUS61 KBOX 190708 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 308 AM EDT Sun May 19 2024

SYNOPSIS

One final day of unsettled conditions before a significant pattern shift to drier and warmer weather on Monday. Very warm temperatures are expected on Tuesday and Wednesday, with temperatures reaching into the 80s, with an outside chance a few locations see 90 degrees on Wednesday. Humidity levels will be on the low side accompanying that midweek warmth. A cold front arrives on Thursday with the potential for showers and thunderstorms. A drier and more seasonable air mass then filters in for late in the week into at least the early part of Memorial Day Weekend.

NEAR TERM /UNTIL 6 PM THIS EVENING/

Overnight guidance continued to perform horribly in identifying the presence of moderate to heavy showers along the I-95 corridor that seemed to be driven by a SW to NE oriented 925mb jet (~30kt in strength) and moisture convergence between 925mb-850mb. Even the NAMNest, that was one of the only pieces of guidance that diagnosed more widespread, impactful rain on Saturday, struggled to depict the nocturnal rain. Am very apprehensive to bite on guidance for today that suggests a completely dry day with only very modest changes in the synoptic setup; surface high and mid level ridging nudging in from the southwest with coastal low moving just ever so slightly eastward. So, while not anticipating that Sunday will be as much of a washout as we saw for portions of the area on Saturday, do expect shower activity will persist through at least the first half of the morning before PWATs fall below 1" as low pressure finally draws far enough east. Given our tepidness to completely remove PoPs from the forecast today, heavily blended the Canadian into the forecast, which was the only model that accurately depicted the intensity and geographical spread of rain overnight with yesterday's 12Z run. With NE flow, do expect shower activity to be remain most widespread east of the I-95 corridor, with lesser chances north and west.

With low pressure drawing east, will likely see some clearing across the CT River Valley. Cloud cover and rain chances will again drive high temperatures, but given pattern of persistence, expecting temps to remain in the 50s across eastern MA and much of RI today. With more sunshine than yesterday out west, it's possible several localities make a run at the low 70s.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM MONDAY/

While the chance for showers drops significantly overnight, model soundings suggest that stratus/drizzle will hang tough across SE MA/Cape Cod, and fog, perhaps dense at times, will develop across interior southern New England. It will be a seasonable night with temperatures dropping into the upper 40s to low 50s.

Surface high nestles safely over southern New England Monday as mid level ridging continues to build in intensity and 850mb temps climb to between 12-14C by 00Z Tuesday. Given this, well deserved, shift in the synoptic setup over southern New England, expecting much more sunshine across the region as early morning fog/stratus/drizzle dissipates quickly through 15Z; though may take until 18/20Z across the Cape and Islands. Although temps remain mild aloft, boundary layer mixing does not look overly impressive, perhaps to ~925mb, so dropped temperatures from what was depicted by the NBM (80s across the interior) to more conservative high temperatures in the mid 70s away from the coast. While flow shifts to the south gradually through the day, it will shift latest, as late as 22Z, along the coast, so the "synoptic seabreeze" will lead to another significant temperature gradient along the immediate coast, where temperatures will struggle to hit 60. In fact, temperatures may not climb out of the 50s on the Cape all day!



LONG TERM /MONDAY NIGHT THROUGH SATURDAY/

Highlights:

* Very warm temperatures Tuesday and Wednesday away from the southeast coast, with readings into the 80s. Warmest day is Wednesday, and a few locations in the Connecticut and Merrimack Valleys could see their first 90-degree temperature in 2024 on Wednesday! Humidity levels will be tolerable - a "dry heat".

* Cold front moves through sometime on Thursday. Timing of the front is still uncertain but the timing will influence how warm temperatures get and also the potential for thunderstorms, which could be strong.

* Drier with more seasonable temperatures for late in the week into the early Memorial Day Weekend.

Details:

00z ensembles continue to advertise a significant warm spell for at least Tuesday and Wednesday for most of Southern New England. Full sun and southwest downsloping breezes, combined with 850 mb temps around +13 to +15C should be fairly common on Tuesday with 850 mb temps rising about a degree or so on Wednesday. It is likely that the Providence to Plymouth corridor on southward to Cape Cod and the Islands would be the cooler locations given southwest flow off the water, with values in the 70s to lower 80s and upper 60s-around 70 for Cape Cod. Very warm temperatures are expected further north and west from there, with persistent SW flow keeping the eastern MA sea breeze from developing. Of the two days, Wednesday projects as the warmest. Highs on Tuesday away from the southern coast should reach into the lower to mid 80s, with readings near 80 for the North Shore into Greater Boston. Probabilistic maximum temperature data from the NBM for Wednesday indicates 50-70% probs for highs reaching the 90- degree mark in the CT and Merrimack Valleys! Mid to upper 80s being common to the Providence-Plymouth corridor. Kept highs for southeast coastal New England on Wednesday into the 70s to low 80s. Thus it is looking likely that we'll see summerlike temperatures making their first appearance in 2024 on Tuesday and Wednesday for a large part of Southern New England, with many likely not yet acclimatized to this warmth as yet. It's also more of the "toasty" heat versus the oppressive/muggy kind: very warm ambient air temps but with tolerable humidity levels, as dewpoints are expected in the mid to upper 50s.

A cold front then approaches sometime on Thursday, with increasing cloud cover. The biggest question mark is on the timing of the front, which will influence both how warm we get pre-frontal passage and the potential potency of showers and t-storms along and ahead of the front. Not out of the question that Thursday could still be quite warm if we see a slower timing similar to the ECMWF. Kept temps a little cooler than NBM but even with clouds we should see highs reach the lower to mid 80s again for most except southeast New England. Thursday could also feature scattered strong to perhaps severe t-storms too if the timing of the front coincides with peak daytime heating; GFS shows a convective environment with about 1000 J/kg of CAPE with about 40-45 kt of wind shear in the 0-6 km layer for Thursday.
Machine-learning progs from Colorado State weren't available with the 00z guidance but the prior run hinted at the potential for storms becoming severe in interior sections of New England.
Kept PoP around 30-50 percent, but those will need to be adjusted pending the timing of the front. But Thursday should be the next best chance for rains.

A more seasonable airmass then returns on NW flow for Friday and Saturday, with drier weather also returning.

AVIATION /07Z SUNDAY THROUGH THURSDAY/
Forecast Confidence Levels:

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

06Z TAF Update: Low Confidence in precipitation, moderate confidence in cigs/vsby through tonight.

Today...

Ceilings generally IFR to MVFR with localized LIFR this morning.
Shower activity across eastern MA/RI wanes through 15Z, though showers possible along the eastern coast for the better part of the day. Conditions may improve to VFR across the CT River Valley after 18Z. NE winds gusting as high as 20kt for the coastline, lower across the interior.

Tonight...

Conditions deteriorate overnight with widespread fog, LIFR to MVFR once again. Pockets of drizzle likely across eastern MA/RI and the Cape and Islands. NE winds diminish to near calm across the interior, leading to fog, and 15kt across the outer Cape.

Monday...

LIFR to MVFR and any fog that develops overnight will quickly rebound to VFR for the duration of the day, though it may take until 15Z or so to burn off on the Cape and Islands. Winds generally less than 10kt and will finally begin to shift from the E/NE to the S, shifting first across the interior and last along the eastern coastline.

Ceilings lower to MVFR across interior with mainly dry conditions. Farther east, IFR in low clouds, drizzle, and fog from central MA to coastal areas, with LIFR possible closer to Cape Cod and Islands. Conditions slowly improve Sunday but MVFR/IFR continue to prevail through Sunday night, though interior locations should improve to VFR Sunday afternoon and remain that way into Sunday night.

N/NE winds persist through Sunday night, with 20-25kt gusts at times near Cape Cod and Islands.

KBOS TAF...Low confidence in precipitation, moderate confidence in cigs/vsby. Generally IFR to MVFR today with scattered showers. Drizzle/stratus tonight will deteriorate conditions back to IFR. VFR develops on Monday. NE winds until very late Monday gusting as high as 20kt this afternoon.

KBDL TAF...High confidence (70%). Generally MVFR but some patchy fog possible early this morning (IFR). Chance to break out into VFR after 18Z before IFR develops tonight with more widespread fog. Wind NE today becoming more southerly on Monday.

Outlook /Monday Night through Thursday/...

Monday Night through Tuesday Night: VFR.

Wednesday through Wednesday Night: VFR. Breezy.

Thursday: VFR. Breezy. Chance SHRA, chance TSRA.

MARINE
Forecaster Confidence Levels:

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

3 AM update...

Sunday... High Confidence.

Offshore low and maritime high move very little, thus morning low clouds, fog and spotty light rain and drizzle expected. Some improvement in the afternoon. NE winds 10 to 20kt. Seas in excess of 5ft across the outer waters.

Sunday night...High confidence.

More of the same weather given offshore low and maritime high persist. Lighter winds and maritime high slowly advects over the MA/RI waters. Small craft conditions continue for the eastern outer waters with seas over 5 feet.

Monday... High confidence

Morning stratus/fog/drizzle will clear gradually though the day, though may hang tough across the waters through 18Z/20Z. NE winds gradually shift to the south late in the day, but high pressure over New England will keep winds rather light, 5-10kt with an occasional morning gust to 15kt. Small craft conditions possible for the extreme outer waters with seas still around 5ft.

Outlook /Monday Night through Thursday/...

Monday Night: Winds less than 25 kt. Areas of seas approaching 5 ft.

Tuesday through Wednesday Night: Winds less than 25 kt. Seas locally approaching 5 ft.

Thursday: Winds less than 25 kt. Seas locally approaching 5 ft.
Slight chance of rain showers, isolated thunderstorms.

BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 2 AM EDT Monday for ANZ250.
Small Craft Advisory until 2 PM EDT Monday for ANZ254.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
BHBM3 - 8443970 - Boston, MA 9 mi54 min 54°F 29.98
44013 - BOSTON 16 NM East of Boston, MA 18 mi44 min NE 12G16 51°F 53°F30.0051°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 29 mi110 min NNE 14G18 52°F 51°F6 ft29.99
FOXR1 - 8454000 - Providence, RI 38 mi54 min N 9.9G13 55°F 51°F29.97
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 39 mi54 min NNE 6G8.9 53°F 29.96
FRVM3 - 8447386 - Fall River, MA 39 mi54 min 52°F 54°F29.97
FRXM3 39 mi54 min 53°F 52°F
PVDR1 39 mi54 min N 8G11 55°F 29.9753°F
CPTR1 - 8452944 - Conimicut Light, RI 42 mi54 min N 13G17 53°F 55°F29.96
44018 - SE Cape Cod 30NM East of Nantucket, MA 43 mi74 min 51°F6 ft
44090 43 mi54 min 49°F 53°F2 ft
NBGM3 43 mi54 min NE 7G11 51°F 29.96
NAXR1 - Narragansett Bay Reserve, RI 46 mi69 min ESE 12 54°F 29.9553°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 46 mi54 min NE 9.9G16 54°F 29.97
PRUR1 48 mi54 min 54°F 53°F


Wind History for Providence, RI
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KBOS GENERAL EDWARD LAWRENCE LOGAN INTL,MA 9 sm52 minNE 101/2 smOvercast Mist 54°F54°F100%29.99
KOWD NORWOOD MEMORIAL,MA 12 sm12 minNE 072 smOvercast Mist 55°F54°F94%29.99
KGHG MARSHFIELD MUNI GEORGE HARLOW FIELD,MA 18 sm18 minvar 05G122 smOvercast Mist 52°F50°F94%29.99
KBED LAURENCE G HANSCOM FLD,MA 24 sm16 minNNE 073/4 smOvercast Mist 54°F52°F94%29.99
KBVY BEVERLY RGNL,MA 24 sm60 minNNE 082 smOvercast Lt Rain Mist 52°F52°F100%29.99
Link to 5 minute data for KMQE


Wind History from MQE
(wind in knots)
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Tide / Current for Weymouth Fore River Bridge, Massachusetts
   
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Weymouth Fore River Bridge
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Sun -- 03:09 AM EDT     1.55 feet Low Tide
Sun -- 03:18 AM EDT     Moonset
Sun -- 05:18 AM EDT     Sunrise
Sun -- 09:24 AM EDT     8.75 feet High Tide
Sun -- 03:24 PM EDT     1.54 feet Low Tide
Sun -- 04:18 PM EDT     Moonrise
Sun -- 08:02 PM EDT     Sunset
Sun -- 09:44 PM EDT     9.38 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weymouth Fore River Bridge, Massachusetts, Tide feet
12
am
5.9
1
am
4
2
am
2.3
3
am
1.6
4
am
1.9
5
am
2.8
6
am
4.3
7
am
6.2
8
am
7.8
9
am
8.7
10
am
8.6
11
am
7.7
12
pm
6.3
1
pm
4.5
2
pm
2.7
3
pm
1.6
4
pm
1.7
5
pm
2.6
6
pm
4.1
7
pm
6
8
pm
7.9
9
pm
9.1
10
pm
9.3
11
pm
8.7


Tide / Current for Boston Harbor, Massachusetts Current
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Boston Harbor
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Sun -- 12:54 AM EDT     -1.11 knots Max Ebb
Sun -- 03:02 AM EDT     0.00 knots Slack
Sun -- 03:18 AM EDT     Moonset
Sun -- 05:18 AM EDT     Sunrise
Sun -- 06:21 AM EDT     0.89 knots Max Flood
Sun -- 09:02 AM EDT     -0.00 knots Slack
Sun -- 01:15 PM EDT     -1.07 knots Max Ebb
Sun -- 03:18 PM EDT     0.00 knots Slack
Sun -- 04:18 PM EDT     Moonrise
Sun -- 06:41 PM EDT     0.98 knots Max Flood
Sun -- 08:03 PM EDT     Sunset
Sun -- 09:27 PM EDT     -0.00 knots Slack
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
-1.1
2
am
-0.8
3
am
-0
4
am
0.5
5
am
0.7
6
am
0.9
7
am
0.8
8
am
0.4
9
am
0
10
am
-0.3
11
am
-0.6
12
pm
-0.9
1
pm
-1.1
2
pm
-0.9
3
pm
-0.2
4
pm
0.4
5
pm
0.7
6
pm
0.9
7
pm
1
8
pm
0.7
9
pm
0.2
10
pm
-0.2
11
pm
-0.5


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GEOS Local Image of north east   
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Boston, MA,




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