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

June 24, 2024 2:43 PM EDT (18:43 UTC) Change Location
Sunrise 5:06 AM   Sunset 8:26 PM
Moonrise 11:01 PM   Moonset 7:30 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- 104 Pm Edt Mon Jun 24 2024

This afternoon - W winds 10 to 15 kt with gusts up to 20 kt. Waves 1 foot or less.

Tonight - NW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves 1 foot or less.

Tue - NW winds 5 to 10 kt, becoming sw in the afternoon. Waves 1 foot or less.

Tue night - S winds 5 to 10 kt, becoming sw 10 to 15 kt after midnight. Waves 1 foot or less.

Wed - SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers in the afternoon.

Wed night - SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves around 2 ft. Showers likely. Scattered tstms in the evening.

Thu - W winds 5 to 10 kt. Waves 1 foot or less. A chance of showers.

Thu night through Fri night - S 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 104 Pm Edt Mon Jun 24 2024

Synopsis for massachusetts and rhode island coastal waters - A cold front moves across the waters today followed by nw flow tonight. High pres builds S of the waters Tue. Another cold front moves E from the gt lakes Wed, crossing new eng and the waters late Wed night and Thu. High pres builds over the waters Fri into Sat.


7 Day Forecast for Marine Location Near Nahant, MA
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Area Discussion for - Boston, MA
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FXUS61 KBOX 241813 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 213 PM EDT Mon Jun 24 2024

SYNOPSIS
A disturbance aloft over the Northern Adirondacks moves southeastward tonight, bringing evening cloudiness, northwest breezes and a drier air mass to Southern New England. Warmer temperatures then return for Tuesday but humidity levels remain comfortable. Increasing humidity levels on Wednesday with the risk for showers and thunderstorms, and some could become strong. Drier and less humid to end the workweek, although summerlike warmth and humidity return by this weekend.

NEAR TERM /THROUGH TONIGHT/
145 PM Update:

Other than across Cape Cod where dewpoints remain in the upper 60s to around 70 as westerly windshift still is working its way into the Cape, further inland humidity levels are dropping. For the vast majority of locations, dewpoints are falling into the mid 50s to around 60, leading to a far more comfortable air mass than we've experienced of late. From a bigger picture view, a rather potent shortwave trough aloft circulating over the Northern Adirondacks in NY is leading to an increasing coverage of puffy stratocumulus cloudiness this afternoon in Southern New England. Radar is picking up on either sprinkles or very light rain showers dotting the Berkshires with the cooler pocket of air aloft tied to the shortwave trough. This shortwave trough aloft will be the main driver of our weather tonight.

So for tonight, shortwave disturbance aloft and its cool pocket of air aloft will be moving through the interior Northeast and offshore through midnight. The approach of this disturbance should at least maintain cloud cover if not increase it a bit.
Think cloud cover should trend more partial to mostly cloudy. An outside chance (20% or less) of a sprinkle or light shower as the shortwave moves through. Am a little skeptical the coverage will be as numerous as some of the high res models indicate with drier air moving into the lowest hundred or so mb of atmosphere. Carried a mention of isolated showers but with nil QPF over northern and northeast portions of Southern New England, but many areas however stay dry. Should also see more northwesterly breezes for the evening and overnight, which will continue to usher in lowering dewpoints and a more comfortable air mass. Humidity levels should be low enough tonight to give fans/ACs a break for more open-windows. Lows tnoight in the mid 50s to lower 60s, with mid 60s out over Cape Cod.

SHORT TERM /TUESDAY/
4 AM update...

Tonight...

* Dry, cooler and comfortable humidity

Dry, cool NW flow across SNE in response to vertically closed low over the Gulf of Maine. Derived mins from a blend of the cooler MOS guidance and the milder NBM. Should be enough WNW pgrad to preclude cooler MOS guidance from verifying, thus followed a blend, which still yields cool temps, with lows in the upper 50s to lower 60s.

Tuesday...

Could be pick of the week, with dry NW flow continuing. However, temps will be warming aloft as vertically stacked low over the Gulf of ME exits into the Maritimes. 850 temps warm from +12C to +16C by days end, along with 925 mb temps warming to +22C. These temps aloft combined with WNW winds 10-15 mph shifting to WSW support highs of 85-90 Tue afternoon. Although, not humid with dew pts in the 50s.
Given dry column (PWATS ~0.75 inches) and dew pts in the 50s, not expecting much if any clouds, hence full sun.

LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/
Key Points...

* Hot and humid Wed with showers/t-storms Wed afternoon and night * Showers may linger SE New Eng Thu AM, otherwise improving conditions * Dry & seasonable Fri and Sat * Humidity increases Sat night and Sun with risk of showers/t-storms

Wednesday into Thursday...

Next mid level trough and shortwave amplifies across the Gt Lakes Wed before moving into northern New Eng Thu. Pre-frontal SW flow will bring increasing temps and humidity with highs likely reaching upper 80s to lower 90s away from the south coast, while dewpoints increase to near 70. The heat and humidity will help to generate modest instability beneath favorable mid level lapse rates from a remnant EML. While we do expect scattered showers and t-storms to develop in the afternoon, better chance will likely be during Wed night when best height falls move into the region along with right entrance region of upper jet at a time when diurnal instability will be diminishing. So there is some uncertainty with severe weather risk as peak forcing will not be lining up with peak diurnal instability. Still have to monitor this closely as deep layer shear will be increasing and it is possible we have a narrow window for severe potential late Wed and Wed evening when instability and shear overlap. It is interesting that CSU machine learning probs have ramped up on severe wind potential for Wed-Wed evening. Heavy rainfall will also be a concern Wed night as deep moisture axis moves across the region with PWATs increasing to near 2 inches.

Cold front will be moving across SNE overnight Wed night and likely stalling in the coastal plain on Thu. However, moisture axis will shift to SE New Eng by 12z Thu with good drying moving in from the west during the day. Showers may linger in SE New Eng during Thu morning, otherwise expect improving conditions with increasing sunshine developing from west to east. Highs will reach upper 70s to mid 80s with decreasing humidity in the afternoon, especially interior.

Friday and Saturday...

High pres builds across New Eng Fri which will bring sunshine and somewhat cooler temps, especially along the coast as sea-breezes develop. High pres moves offshore Sat with increasing SW flow developing which will result in dewpoints increasing. Dry weather should hang on for much of the day, but can't rule out a few showers in the afternoon.

Saturday night and Sunday...

Unsettled weather returns as next mid level trough approaches from the Gt Lakes with moisture axis moving into SNE with 2+ inch PWATs.
Expect scattered showers and t-storms through Sunday as cold front may be delayed until later Sun or Sun night. Rather humid conditions likely Sun as 70+ dewpoints return.

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

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

18z TAF Update:

Through 00z Tuesday: High confidence.

SCT-OVC VFR bases 045-060. W to WNW winds 10-15 kt with gusts 20-25 kt for most, with SW to WSW winds around 10-12 kt for the South Coast, Cape and Islands.

Tonight: High confidence.

BKN-OVC VFR bases 035-050 to start tonight, with an outside chance (20% or less) of a sprinkle or light unrestricted shower 00z thru 04z but will leave out of the TAFs due to low prob. NW to NNW winds around 12-15 kt with gusts low 20s kt range thru midnight, then becoming NW around 8-12 kt, highest east.

Tuesday and Tuesday Night: High confidence.

VFR with increasing mid/high clouds arriving later Tue night.
NW winds 5-10 kt ease a bit and shift to W/WSW by aftn.

KBOS TAF...High confidence in TAF. VFR with WNW winds around 10-15 kt with gusts up to 25 kt today. Low (< 15%) chance of an unrestricted-visby shower tonight with winds shifting to NW around 15 kt overnight. Winds then shift back to WNW/W Tue AM with decreasing speeds, becoming SW late in the day on Tue.

KBDL TAF...High confidence in TAF. VFR. W winds around 10-15 kt become NW/N late this aftn and tonight at similar speeds. Winds then shift early Tue to W and then SW later Tue aftn.

Outlook /Tuesday Night through Friday/...

Tuesday Night: VFR. Breezy.

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

Wednesday Night: Mainly MVFR, with local IFR possible. Breezy.
SHRA likely, isolated TSRA.

Thursday: Mainly VFR, with local MVFR possible. Slight chance SHRA.

Thursday Night through Friday: VFR.

MARINE
Forecaster Confidence Levels:

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

*** SCA remains in effect ***

Today...

Robust low level SW jet of 40-45 kt at 2 kft over Cape Cod and Nantucket, slow exits offshore today. Therefore, SW winds surface winds of 15-25 kt during the predawn hours, ease this afternoon and shift to the WSW and then west late. Although, given the long wind fetch, it will take sometime for seas to subside across the southern RI/MA waters. Scattered showers and thunderstorms south of the islands in the predawn hours, slowly moves offshore late this morning.

Tonight...

Wind shift to the NW 15-20 knots. Seas continue to slowly subside.
Dry weather and good vsby.

Tuesday...

Low pressure over the Gulf of Maine exits into the maritimes. This yields NW winds 10-15 kt in the AM, WSW in the afternoon. Dry weather and good vsby prevail.

Outlook /Tuesday Night through Friday/...

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

Wednesday: Moderate risk for Small Craft Advisory winds with gusts up to 25 kt. Seas up to 5 ft. Slight chance of rain showers.

Wednesday Night: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Local rough seas. Rain showers likely, isolated thunderstorms.

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

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

Friday: Winds less than 25 kt.

BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...High Surf Advisory until 7 PM EDT this evening for MAZ020>024.
RI...High Surf Advisory until 7 PM EDT this evening for RIZ006>008.
MARINE...Small Craft Advisory until 3 AM EDT Tuesday for ANZ232>235-237.
Small Craft Advisory until 3 PM EDT Tuesday for ANZ254>256.




Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
BHBM3 - 8443970 - Boston, MA 8 mi56 min 78°F 29.52
44013 - BOSTON 16 NM East of Boston, MA 17 mi44 minW 7.8G9.7 68°F 62°F29.5259°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 21 mi100 minW 7.8G7.8 66°F 62°F2 ft29.52
IOSN3 - Isle of Shoals, NH 40 mi44 minWSW 16G18 73°F 29.4951°F
BGXN3 - Great Bay Reserve, NH 43 mi119 minW 8 75°F 29.5062°F
44018 - SE Cape Cod 30NM East of Nantucket, MA 45 mi64 min 60°F2 ft
44073 45 mi79 minWSW 7.8G9.7 70°F 61°F
SEIM1 45 mi56 min 75°F 57°F29.5358°F
44098 - Jeffrey's Ledge, NH (160) 48 mi48 min 65°F3 ft


Wind History for Providence, RI
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Airport Reports
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Wind History graph: BOS
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Tide / Current for Lynn Harbor, Massachusetts
   
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Lynn Harbor
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Mon -- 01:24 AM EDT     10.51 feet High Tide
Mon -- 05:07 AM EDT     Sunrise
Mon -- 07:30 AM EDT     Moonset
Mon -- 07:49 AM EDT     -0.54 feet Low Tide
Mon -- 02:08 PM EDT     9.02 feet High Tide
Mon -- 07:58 PM EDT     0.73 feet Low Tide
Mon -- 08:25 PM EDT     Sunset
Mon -- 11:01 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Lynn Harbor, Massachusetts, Tide feet
12
am
9.3
1
am
10.4
2
am
10.3
3
am
8.9
4
am
6.8
5
am
4.3
6
am
1.9
7
am
0
8
am
-0.5
9
am
0.4
10
am
2.3
11
am
4.4
12
pm
6.6
1
pm
8.3
2
pm
9
3
pm
8.6
4
pm
7.2
5
pm
5.2
6
pm
3.2
7
pm
1.4
8
pm
0.7
9
pm
1.5
10
pm
3.4
11
pm
5.7


Tide / Current for Boston Harbor, Massachusetts Current
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Boston Harbor
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Mon -- 12:55 AM EDT     -0.00 knots Slack
Mon -- 04:23 AM EDT     -1.18 knots Max Ebb
Mon -- 05:08 AM EDT     Sunrise
Mon -- 07:30 AM EDT     Moonset
Mon -- 07:45 AM EDT     0.00 knots Slack
Mon -- 10:03 AM EDT     1.18 knots Max Flood
Mon -- 01:29 PM EDT     -0.00 knots Slack
Mon -- 04:46 PM EDT     -1.02 knots Max Ebb
Mon -- 08:02 PM EDT     0.00 knots Slack
Mon -- 08:24 PM EDT     Sunset
Mon -- 10:17 PM EDT     1.21 knots Max Flood
Mon -- 11:01 PM EDT     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
0.6
1
am
-0.1
2
am
-0.6
3
am
-1
4
am
-1.2
5
am
-1.2
6
am
-1
7
am
-0.6
8
am
0.2
9
am
1
10
am
1.2
11
am
1.1
12
pm
0.9
1
pm
0.3
2
pm
-0.3
3
pm
-0.7
4
pm
-1
5
pm
-1
6
pm
-0.9
7
pm
-0.7
8
pm
-0
9
pm
0.8
10
pm
1.2
11
pm
1.2


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Boston, MA,




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