Quincy, MA Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Quincy, MA

May 21, 2024 6:45 AM EDT (10:45 UTC) Change Location
Sunrise 5:15 AM   Sunset 8:06 PM
Moonrise 6:28 PM   Moonset 3:57 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- 404 Am Edt Tue May 21 2024

Today - S winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft this afternoon. Patchy fog this morning with vsby 1 to 3 nm.

Tonight - SW winds around 10 kt. Waves around 2 ft.

Wed - SW winds 10 to 15 kt. Waves around 2 ft.

Wed night - SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves around 2 ft in the evening, then 1 foot or less.

Thu - SW winds around 10 kt. Waves 1 foot or less. A chance of showers in the afternoon.

Thu night - SW winds 5 to 10 kt. Waves 1 foot or less. Showers likely with a chance of tstms in the evening, then a chance of showers after midnight.

Fri through Sat night - SE winds 5 to 10 kt. Waves 1 foot or less.
winds and waves higher in and near tstms.
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 404 Am Edt Tue May 21 2024

Synopsis for massachusetts and rhode island coastal waters - High pres remains planted off the mid atlantic coast today. The high drifts further southeast on Wed. A cold front moves into new eng Thu. A weak high builds in on Fri. Unsettled through the weekend into early next week with several lows sliding through.


7 Day Forecast for Marine Location Near Quincy, MA
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Area Discussion for - Boston, MA
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FXUS61 KBOX 210707 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 307 AM EDT Tue May 21 2024

SYNOPSIS
A high pressure remains just south of New England, setting the stage for summerlike warmth today through Thursday, at least away from the immediate south coast. Generally dry weather is expected through Wednesday, but an approaching cold front may bring a round of scattered showers and thunderstorms Thursday afternoon and evening. A few strong to severe storms are possible. Still mild and drier on Friday. Unsettled through this weekend into early next week with more seasonable temperatures.

NEAR TERM /THROUGH TODAY/
High pressure to our south will remain the dominant weather feature impacting our forecast. abundant stratus and fog trapped beneath a subsidence inversion is expected to start the day across RI, a large portion of eastern MA, and even parts of northeast CT. Last several runs of the GLAMP guidance seem to have a rather good handle on the status now. As such, used that as the basis for the forecast today.

This high pressure to our south should maintain dry weather across most of southern New England today. A mid level shortwave is expected to arrive this afternoon into this evening across northern New England. However, it may have enough influence when combined with daytime heating to lead to a few showers across portions of northwest MA.

Temperatures will be complicated. Much will depend on how quickly the stratus breaks. Thinking areas away from southern RI and southeast MA should break out into sunshine rather quickly.
Towards the south coast, it could be early afternoon before getting appreciable sunshine. There is also the issue of the light south to southwest wind coming in off ocean waters in the 50s. Expecting much of interior southern New England to reach the 80s, with a sharp gradient towards the south coast, where temperatures should struggle to get out of the 60s.

SHORT TERM /TONIGHT THROUGH 6 PM WEDNESDAY/
Not much change to the overall synoptic pattern tonight into Wednesday. Expecting more stratus and fog tonight, but with more of a southwest wind at the surface, it should not extend as far inland. More sunshine and a higher starting point from overnight lows, thinking high temperatures should be about 3-5 degrees higher than Tuesday. This could mean some readings around 90 across the interior, with another sharp gradient into the 60s towards the south coast.

Dry weather should prevail, with just a low risk for an afternoon shower or thunderstorm towards western MA.

LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/
Highlights

* Strong to severe thunderstorms possible on Thu as a cold front sweeps through. Temps remain above normal.

* Dry and quiet weather Fri with above normal temps persisting.

* Turning more seasonable temperature wise this weekend. Lot of uncertainty at this point on how things evolve, but it could be unsettled. No washouts anticipated.

* Still unsettled as we head into early next week.

Wednesday Night through Thursday...

A cutoff low will be situated over the Upper Mississippi River Valley/western Ontario Wed Night. The cutoff will rotate northeastward into northern Ontario by late Thu. A shortwave trough rotating around the cutoff will lift from the central Great Lakes into the eastern Great Lakes by early Thu and into New England by late in the day. In response to this forcing a cold front will slide through the region.

The main concern of the extended is this timeframe as there will be a risk for strong to severe thunderstorms. Should note that there is uncertainty in the forecast as convective cloud debris from the previous day could limit the instability that we realize. Need to keep this in mind as all pieces of guidance show mid level clouds (RH in 500-700 hPa layer). The current 00Z NAM clears this very quickly and allows for a large amount of destabilization, whereas the GFS is much more expansive and does not clear us, which results in less destabilization. The GEFS/EPS guidance are muted with low/mod (10-50 percent) probs of SBCAPE AOA 1000 J/kg, which generally highlights CT to RI.
The GEPS guidance is much more amped up with mod to high (40-70+ percent) probs of SBCAPE AOA 1000 J/kg, which highlights our interior. The GEPS even shows some low probs of SBCAPE AOA 2000 J/kg. Given the uncertainty in the earlier day cloud cover will definitely be something we need to keep an eye on. This also impacts what low/mid level lapse rates we realize, but there is indication of 7-9 degree C low level lapse rates in a well mixed boundary layer. The mid level lapse from the GFS/ECMWF/GEM are not bad at 6-8, but the NAM is pretty poultry.

The moisture will be more than sufficient for thunderstorm development along with deep layer shear. Models are in pretty solid agreement with deep layer shear increasing to 20-40 kts on Thu. Didn't stray from the NBM dew points given the southwesterly warm air advection. Will feel quite muggy out Thu with dew points in the 60s for a good chunk of southern New England. Could also potentially have some heavier downpours as these showers/storms are moving through. Both the NAEFS/EPS guidance indicate our PWATs are around 2- 2.5 STD above model climo, which is roughly around values of 1-1.5 inches. Our warm cloud layer depths are right around 2.5-3.5 km, so there could be efficient rain processes going on. The only hindrance is that the front is pretty progressive, so think the flooding threat will be pretty minimal outside of our typical urban/nuisance spots.

Provided we clear out there will be a risk for strong to severe thunderstorms. The CIPs guidance still from last evening, but think it highlights the risk well with a 15-30% risk across southern New England with the highest probs across western MA/CT. Could have both a wind and hail threat given the probs, but the wind appears to be the higher risk at this point in time. The latest CSU ML guidance also highlights the wind/hail risk, but with a 5 to 15 percent probability. Both the NCAR MPAS and C-SHiELD guidance from last night show low to mod probs of 2-5 km Updraft Helicity > 75 units, which highlights interior southern New England. Main threats for Thu at this point would be strong/damaging winds and hail.

Expecting temps to be quite mild with the SWly warm air advection. This will park 17-22 degree Celsius 925 hPa temps overhead. The end result will be widespread 80s away from the immediate south coast. Temps across the south coast will generally be in the 70s.

Friday...

A ridge axis builds from the mid/upper Mississippi River Valley Thu Night into the eastern Great Lakes/Mid Atlantic by Fri afternoon. A weak high builds into southern New England during this timeframe.

Dry and quiet weather anticipated during this timeframe. Will have another mild day across southern New England with 925 hPa temps ranging from 19-21 Celsius. There is some uncertainty on the temps as some guidance keeps our wind SWly and other WNW/NW.
For now the NBM looked reasonable with fairly widespread low/mid 80 degree highs away from the immediate south coast.

This weekend into early next week...

Caught in quasi-zonal flow pattern with waves sliding through.
There is considerable uncertainty how a the blocky pattern over the Northern Plains/Pacific NW breaks down. At this point looks like we could have several waves swing through with perhaps a more substantial trough early next week. The result is an unsettled pattern. At this point have stuck with the NBM, which keeps spotty shower chances through the weekend. Though it does not look like there are any washouts at this point. Better shot for the washout/heavier precip comes early next week. The NAEFS/EPS guidance indicate PWATS around 1-1.5 STD above model climo. Temperatures returning to more seasonable values during this period.

AVIATION /06Z TUESDAY THROUGH SATURDAY/
Forecast Confidence Levels:

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

Today...High Confidence.

IFR in low clouds and fog dissipate this morning as S/SW winds increase to 10-15 knots just after sunrise. VFR form most of the day. May also see a few hours of localized sea breezes along the very immediate coast, but this should be overcome during the afternoon as pressure gradient strengthens.

Tonight...Moderate Confidence.

IFR in low clouds and fog patches redevelop, but probably only impact areas south of I-90 with the greatest risk across RI/SE MA. VFR elsewhere. Surface winds out of the SW at 5-15 knots will probably keep the low clouds/fog from becoming as extensive and spreading as far north.

Wednesday...High confidence.

Becoming VFR. Southwest winds continue.

KBOS TAF...Moderate Confidence

High confidence in IFR ceilings developing around/after 06Z.
There is a low risk for LIFR ceilings around 400 feet after 09Z along with potential for MVFR vsbys in patchy fog near the terminal. Can't rule out a possible sea-breeze for a brief period this afternoon, but confidence is low given pretty strong southwest winds so have left out of TAF for now.

KBDL TAF...High confidence

Outlook /Wednesday Night through Saturday/...

Wednesday Night: VFR. Breezy. Slight chance SHRA.

Thursday: Mainly VFR, with local MVFR possible. Breezy. Chance SHRA, slight chance TSRA.

Thursday Night: VFR. Chance SHRA, isolated TSRA.

Friday through Friday Night: VFR.

Saturday: VFR. Slight chance SHRA.

MARINE
Forecaster Confidence Levels:

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

Through Wednesday...High Confidence.

High pressure south of the waters maintains relatively light winds and seas through Wednesday. The main concern will be poor visibility in areas of fog reducing visibility to less than 1 mile at times, especially early this morning, and again Tuesday night.

Outlook /Wednesday Night through Saturday/...

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

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

Thursday Night: Winds less than 25 kt. Chance of rain showers, isolated thunderstorms.

Friday: Winds less than 25 kt. Slight chance of rain showers.

Friday Night: Winds less than 25 kt.

Saturday: Winds less than 25 kt. Slight chance of rain showers.

BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...None.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
BHBM3 - 8443970 - Boston, MA 8 mi51 min 56°F 29.98
44013 - BOSTON 16 NM East of Boston, MA 17 mi35 min SSW 7.8G9.7 52°F 53°F30.0051°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 27 mi101 min SSW 9.7G12 51°F 54°F5 ft29.98
FOXR1 - 8454000 - Providence, RI 40 mi51 min S 5.1G8 54°F 52°F30.01
PVDR1 40 mi51 min SSW 5.1G7 54°F 30.0253°F
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 41 mi51 min SSW 5.1G6 52°F 30.01
FRVM3 - 8447386 - Fall River, MA 41 mi51 min 52°F 56°F30.02
FRXM3 41 mi51 min 52°F 52°F
44018 - SE Cape Cod 30NM East of Nantucket, MA 43 mi65 min 51°F5 ft
CPTR1 - 8452944 - Conimicut Light, RI 43 mi51 min S 8G8.9 51°F 57°F30.01
44090 45 mi45 min 50°F 53°F1 ft
NBGM3 45 mi51 min W 4.1G6 49°F 30.02
NAXR1 - Narragansett Bay Reserve, RI 48 mi60 min WNW 2.9 51°F 30.0151°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 48 mi51 min WSW 2.9G6 51°F 30.03
PRUR1 49 mi51 min 51°F 51°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 7 sm51 minSSW 066 smOvercast Mist 54°F54°F100%29.98
KOWD NORWOOD MEMORIAL,MA 12 sm52 minSSW 0610 smOvercast57°F54°F88%29.99
KGHG MARSHFIELD MUNI GEORGE HARLOW FIELD,MA 19 sm10 minvar 048 smOvercast52°F52°F100%29.99
KBED LAURENCE G HANSCOM FLD,MA 22 sm54 minSSW 0410 smA Few Clouds54°F52°F94%29.96
KBVY BEVERLY RGNL,MA 22 sm52 minS 047 smOvercast54°F52°F94%29.97
Link to 5 minute data for KBOS


Wind History from BOS
(wind in knots)
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Tide / Current for Nut Island, Massachusetts
   
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Nut Island
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Tue -- 03:57 AM EDT     Moonset
Tue -- 04:38 AM EDT     0.77 feet Low Tide
Tue -- 05:16 AM EDT     Sunrise
Tue -- 10:55 AM EDT     8.56 feet High Tide
Tue -- 04:46 PM EDT     1.34 feet Low Tide
Tue -- 06:27 PM EDT     Moonrise
Tue -- 08:04 PM EDT     Sunset
Tue -- 11:03 PM EDT     9.56 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Nut Island, Massachusetts, Tide feet
12
am
8.1
1
am
6.5
2
am
4.5
3
am
2.4
4
am
1
5
am
0.8
6
am
1.6
7
am
3
8
am
4.8
9
am
6.7
10
am
8.1
11
am
8.6
12
pm
8
1
pm
6.8
2
pm
5.1
3
pm
3.2
4
pm
1.7
5
pm
1.4
6
pm
2.2
7
pm
3.6
8
pm
5.4
9
pm
7.4
10
pm
9
11
pm
9.6


Tide / Current for Boston Harbor, Massachusetts Current
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Boston Harbor
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Tue -- 02:22 AM EDT     -1.16 knots Max Ebb
Tue -- 03:57 AM EDT     Moonset
Tue -- 04:32 AM EDT     0.00 knots Slack
Tue -- 05:16 AM EDT     Sunrise
Tue -- 07:48 AM EDT     0.96 knots Max Flood
Tue -- 10:23 AM EDT     -0.00 knots Slack
Tue -- 02:40 PM EDT     -1.02 knots Max Ebb
Tue -- 04:44 PM EDT     0.00 knots Slack
Tue -- 06:27 PM EDT     Moonrise
Tue -- 07:59 PM EDT     1.05 knots Max Flood
Tue -- 08:05 PM EDT     Sunset
Tue -- 10:38 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
-0.7
1
am
-1
2
am
-1.1
3
am
-1.1
4
am
-0.5
5
am
0.3
6
am
0.7
7
am
0.9
8
am
1
9
am
0.7
10
am
0.2
11
am
-0.2
12
pm
-0.6
1
pm
-0.8
2
pm
-1
3
pm
-1
4
pm
-0.6
5
pm
0.2
6
pm
0.8
7
pm
1
8
pm
1
9
pm
0.9
10
pm
0.4
11
pm
-0.2


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




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