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Marine Weather and Tide Forecast for Yarmouth Port, MA

December 9, 2024 5:49 AM EST (10:49 UTC) Change Location
Sunrise 6:55 AM   Sunset 4:12 PM
Moonrise 1:32 PM   Moonset 12:59 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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ANZ231 Cape Cod Bay- 405 Am Est Mon Dec 9 2024

Today - N winds around 5 kt, becoming E with gusts up to 20 kt this afternoon. Seas around 2 ft this morning, then 1 foot or less. Wave detail: nw 1 foot at 4 seconds and E 1 foot at 9 seconds, becoming N 1 foot at 5 seconds. Rain likely this afternoon.

Tonight - E winds 10 to 15 kt, becoming S after midnight. Gusts up to 25 kt. Seas around 2 ft. Wave detail: E 1 foot at 3 seconds and ne 1 foot at 7 seconds. Rain, mainly in the evening. Patchy fog after midnight. Vsby 1 to 3 nm.

Tue - W winds 5 to 10 kt, becoming sw in the afternoon. Seas around 2 ft. Wave detail: sw 1 foot at 2 seconds and ne 1 foot at 5 seconds. Patchy fog in the morning with vsby 1 to 3 nm.

Tue night - SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave detail: se 2 ft at 3 seconds and ne 1 foot at 6 seconds. Rain.

Wed - S winds 15 to 20 kt with gusts up to 25 kt, increasing to 20 to 25 kt with gusts up to 35 kt in the afternoon. Seas 2 to 4 ft, building to 4 to 6 ft in the afternoon. Wave detail: S 3 ft at 4 seconds and ne 1 foot at 6 seconds, becoming S 4 ft at 4 seconds and E 3 ft at 7 seconds. Rain. Vsby 1 to 3 nm.

Wed night - S winds 25 to 30 kt with gusts up to 40 kt. Seas 6 to 9 ft. Wave detail: S 5 ft at 5 seconds and se 5 ft at 8 seconds. Rain. Vsby 1 to 3 nm.

Thu - W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Rain likely.

Thu night - W winds 15 to 20 kt. Seas 4 to 5 ft. A chance of rain.

Fri - W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.

Fri night - NW winds 5 to 10 kt. Seas around 2 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.
ANZ200 405 Am Est Mon Dec 9 2024

Synopsis for massachusetts and rhode island coastal waters - Low pressure passes over the waters late Monday into Tuesday before a much stronger low with strong winds crosses on Wednesday. High pressure moves in Thursday into Friday.

7 Day Forecast for Marine Location Near Yarmouth Port, MA
   
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Tide / Current for Barnstable Harbor, Beach Point, Massachusetts
  
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Barnstable Harbor
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Mon -- 05:21 AM EST     9.62 feet High Tide
Mon -- 06:56 AM EST     Sunrise
Mon -- 11:50 AM EST     0.87 feet Low Tide
Mon -- 12:32 PM EST     Moonrise
Mon -- 04:10 PM EST     Sunset
Mon -- 05:41 PM EST     9.61 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
        
Sorry tide depth graphs only, please select another station.

Barnstable Harbor, Beach Point, Massachusetts, Tide feet
12
am
0.6
1
am
2.2
2
am
4.3
3
am
6.5
4
am
8.4
5
am
9.5
6
am
9.4
7
am
8.3
8
am
6.6
9
am
4.7
10
am
2.8
11
am
1.3
12
pm
0.9
1
pm
1.9
2
pm
3.7
3
pm
5.8
4
pm
7.8
5
pm
9.3
6
pm
9.6
7
pm
8.7
8
pm
7.1
9
pm
5.1
10
pm
3.1
11
pm
1.3

Tide / Current for Cape Cod Canal, Massachusetts Current
  
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Cape Cod Canal
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Mon -- 12:00 AM EST     Moonset
Mon -- 03:36 AM EST     -0.02 knots Slack
Mon -- 06:27 AM EST     -4.01 knots Max Ebb
Mon -- 06:58 AM EST     Sunrise
Mon -- 09:27 AM EST     0.02 knots Slack
Mon -- 12:24 PM EST     3.75 knots Max Flood
Mon -- 12:33 PM EST     Moonrise
Mon -- 03:43 PM EST     -0.10 knots Slack
Mon -- 04:11 PM EST     Sunset
Mon -- 06:48 PM EST     -4.24 knots Max Ebb
Mon -- 09:53 PM EST     0.19 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
        
Sorry tide depth graphs only, please select another station.

Cape Cod Canal, Massachusetts Current, knots
12
am
4.1
1
am
3.9
2
am
3.3
3
am
2.1
4
am
-1.8
5
am
-3.3
6
am
-3.9
7
am
-3.9
8
am
-3.2
9
am
-1.9
10
am
2
11
am
3.2
12
pm
3.7
1
pm
3.7
2
pm
3.2
3
pm
2.2
4
pm
-1.5
5
pm
-3.2
6
pm
-4
7
pm
-4.2
8
pm
-3.8
9
pm
-2.7
10
pm
1
11
pm
3

Area Discussion for Boston, MA
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FXUS61 KBOX 090849 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 349 AM EST Mon Dec 9 2024

SYNOPSIS

Milder conditions expected for much of this week, with a period of rain Monday, and again by Wednesday into Wednesday night along with strong winds. A temporary period of shallow cold air later today into Tuesday with Quebec high pressure system may lead to some icing along and north of Route 2. Drier and more seasonable temperatures expected late this week into next weekend.

NEAR TERM /THROUGH TONIGHT/

Key Messages...

* Dry to start Monday then rain and some high elevation icing move in late Monday/Monday night

Expect a quiet start to the work week as weak mid level ridging follows the exiting trough axis during the first part of the day. As Monday wears on though we'll see increasingly thick cloudcover out ahead of our next storm system. At the synoptic scale we have another low developing over the western Great Lakes with a secondary low induced over southern New England. As the associated shortwave passes this evening it will interact with a deep plume of moisture (PWATs near 1") and warm SW flow to induce widespread precipitation over western MA/CT by early afternoon and eastern MA by evening. The warm advection which brings relatively mild temps on Monday (highs in the mid 30s to mid 40s) will mean rain for the vast majority of SNE. The exception may be the highest elevations of the Berkshires and Worcester Hills where pockets of freezing rain/light ice accumulations are possible. Given the placement of a high pressure over Quebec subfreezing air may linger at the surface while soundings indicate a decent warm nose at 850 mb. A Winter Weather Advisory has been issued for the northern slopes of the Berkshires and northern Worcester Hills where a coating of ice may make for hazardous driving conditions by the Tuesday morning commute.
Elsewhere a decent amount of rainfall is expected before majority of the precip exits by midnight; odds favor a quarter to half inch of rain.



SHORT TERM /TUESDAY/

Tuesday we'll be between systems with continued moist low level easterly flow keeping low clouds socked in. Even lacking any synoptic forcing saturated low level onshore flow may lead to areas of drizzle and perhaps even some freezing drizzle in the high elevation interior, though confidence in icing is low at this point.

LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/
Key Messages:

* Rain starts to move in late Tuesday night/early Wednesday morning and sticks around through Thursday morning

* Winds pick up from the south as storm moves in

* Drying out during the day Thursday before another chance for unsettled weather Sunday

There is high confidence in the main synoptic pattern early in this period. Following a shortwave Tuesday morning, more rain is expected to move in by early Wednesday morning with the arrival of a surface low coming in from the Mid-Atlantic region. Rain should move out of the region Thursday. Temperatures aloft continue to be warmer than normal; 850 mb temps across the ensembles and the deterministic guidance are likely to be up to +10C by Wednesday afternoon, which is a good signal for the warmer than normal highs in the forecast; some spots in SE MA could reach close to 65F. Winds are also expected to pick up from the south as the jet associated with this system moves over southern New England.

In terms of rainfall amounts, there is still some uncertainty as to where the highest amounts will be. GEFS and GEPS have the highest probs for greater than 2" of rain over the event in western MA down into CT while the ENS shifts that chance over towards the Cape. The NBM has probs up to 88% for greater than 2" across RI up into Boston over a 48 hour span and an 81% chance for that same criteria over in the eastern slopes of the Berkshires. There is also a 50% chance for amounts greater than 3" over eastern RI in a 48 hour span. Suffice to say, there is still a range of where the most rain could fall over the course of this event. Some localized flooding could be an issue depending on the presence of some partially frozen ground, but the extent of any flooding impacts is still unknown this far ahead of the event.

As the low moves out and the rain comes to an end, cold air following a cold front is expected to make its way into the region.
Preceding this cold front, the forcing from it could lead to some rumbles of thunder from CT through RI and up into eastern MA and the Cape. Some snowflakes could fall across western and central MA as this colder air begins its progression eastward, but not much accumulation over a coating looks favored at this time.

Surface high pressure moves in, drying out the region going into Friday and the weekend. Temperatures are also expected to drop once again -- especially Thursday night -- and return to more seasonable levels.



AVIATION /09Z MONDAY THROUGH FRIDAY/
Forecast Confidence Levels:

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

06Z update...

Today...High Confidence.

Winds light and variable. VFR to start then lowering to MVFR/IFR by evening in RA.

Tonight... High Confidence.

IFR with embedded IFR in RA/-RA through about 06Z. Low ceilings persist through Tuesday morning with easterly winds becoming north/NNW by 12Z Tuesday.

Tuesday...High Confidence.

IFR/MVFR cigs with light winds, slight chance of RA.

KBOS Terminal...High Confidence.

KBDL Terminal...High Confidence.

Outlook /Tuesday Night through Friday/...

Tuesday Night: Mainly IFR, with areas MVFR possible. Breezy.
RA.

Wednesday: Mainly IFR, with areas MVFR possible. Windy with gusts up to 35 kt. RA, isolated TSRA.

Wednesday Night: MVFR/IFR conditions possible. Strong winds with local gusts up to 40 kt. RA.

Thursday: VFR. Breezy. Slight chance RA, slight chance SN.

Thursday Night: VFR. Breezy.

Friday: VFR.

MARINE
Forecaster Confidence Levels:

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

Today and Tonight...High confidence.

Winds increase out of the east southeast this afternoon ahead of an approaching low pressure system that will bring rain to the coastal waters this afternoon and evening. Gusts to 30 kt are possible on the outer eastern waters. The surface low pressure center moves over the coastal waters tonight which will result in variable wind direction with northeast winds over the eastern zones and west winds over the southern waters. Seas may increase to near SCY levels on outer waters.

Tuesday...High confidence.

NE winds on the eastern waters with SW winds on the southern waters early, then all shifting to the SE in the afternoon. Seas 3-4 ft.

Outlook /Tuesday Night through Friday/...

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

Wednesday: Low risk for gale force winds with gusts up to 40 kt. Rough seas up to 14 ft. Rain, isolated thunderstorms.
Local visibility 1 to 3 nm.

Wednesday Night: Strong winds with gusts up to 40 kt. Rough seas up to 18 ft. Rain. Areas of visibility 1 to 3 nm.

Thursday: Strong winds with gusts up to 30 kt. Rough seas up to 14 ft. Chance of rain.

Thursday Night: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Rough seas up to 11 ft. Slight chance of rain.

Friday: Winds less than 25 kt. Local rough seas.

BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...Winter Weather Advisory from 3 PM this afternoon to 10 AM EST Tuesday for MAZ002-004-008-026.
RI...None.
MARINE...Small Craft Advisory until 7 AM EST this morning for ANZ254>256.


Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
44090 9 mi50 min 44°F 47°F2 ft
44020 - NANTUCKET SOUND 15 mi40 minWNW 9.7G12 44°F 43°F30.0637°F
WAXM3 - Waquoit Bay Reserve, MA 15 mi65 minNE 1.9 38°F 30.0432°F
CHTM3 18 mi50 min 37°F 30.05
BZBM3 - 8447930 - Woods Hole, MA 24 mi50 min 43°F 44°F30.07
NTKM3 - 8449130 - Nantucket Island, MA 31 mi50 minWNW 2.9G7 44°F 41°F30.07
NBGM3 33 mi50 minNNW 2.9G2.9 39°F 30.08
44085 45 mi50 min 47°F 50°F5 ft
BUZM3 - Buzzards Bay, MA 45 mi50 minNW 11G12 46°F 30.07
FRVM3 - 8447386 - Fall River, MA 46 mi50 min 38°F 41°F30.08
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 47 mi50 minSSW 4.1G5.1 40°F 30.08
44013 - BOSTON 16 NM East of Boston, MA 48 mi40 minN 5.8G7.8 43°F 48°F30.0535°F


Wind History for Nantucket Island, MA
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Airport Reports
   
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Weather Map
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GEOS Local Image of north east  
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Boston, MA,





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