Groton, CT Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Groton, CT

April 16, 2024 3:20 AM EDT (07:20 UTC) Change Location
Sunrise 6:04 AM   Sunset 7:31 PM
Moonrise 12:22 PM   Moonset 3:06 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.

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Marine Forecasts
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ANZ330 Long Island Sound East Of New Haven Ct/port Jefferson Ny- 600 Am Edt Tue Mar 30 2021

Today - E winds around 5 kt, becoming S late this morning and afternoon. Seas 1 ft or less.

Tonight - S winds around 10 kt. Seas 1 to 2 ft.

Wed - S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Chance of showers in the morning, then chance of rain in the afternoon.

Wed night - S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Rain. Vsby 1 to 3 nm.

Thu - W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Showers.

Thu night - NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft.

Fri - NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft.

Fri night - NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.

Sat - W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.

Sat night - SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.

ANZ300 119 Am Edt Tue Apr 16 2024

Synopsis for the long island and connecticut coastal waters - A weak cold front pushes offshore and south of the coastal waters tonight. High pressure builds in overnight and remains through Tuesday night. A slow moving warm front then approaches from the southwest Wednesday into Thursday. High pressure briefly builds in for Friday, followed by a cold front on Saturday.


7 Day Forecast for Marine Location Near Groton city, CT
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Area Discussion for - New York City/Upton, NY
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FXUS61 KOKX 160551 AFDOKX

Area Forecast Discussion National Weather Service New York NY 151 AM EDT Tue Apr 16 2024

SYNOPSIS
Following a weak cold frontal passage, high pressure will build in from the northwest through Tuesday night. A slow moving warm front then approaches from the southwest Wednesday into Thursday.
High pressure briefly builds in for Friday, followed by a cold front on Saturday. The front remains not too far offshore on Sunday as high pressure tries to build in, then high pressure strengthens more on Monday.

NEAR TERM /UNTIL 6 AM THIS MORNING/
Spotty showers continue across SE CT and this should come to an end over the next hour. This appears to be associated with jet energy rounding the base of the amplifying upper trough across the Northeast.

Otherwise, cold front south of the area will continue to work south, while high pressure ridging across the Great Lakes begins to build in from the west.

Stayed with the latest forecast for lows, but this will be critical on how much winds lighten and the airmass radiates.
Lows will still be running 5 to around 7 degrees above normal, perhaps higher.

SHORT TERM /6 AM THIS MORNING THROUGH 6 AM WEDNESDAY/
High pressure remains over the region for Tuesday and Tuesday night with temperatures again above normal by 5 to 10 degrees.
Tuesday night temperatures will be near seasonal normals.

LONG TERM /WEDNESDAY THROUGH MONDAY/
A broad area of low pressure stretching from the western Great Lakes to the Ohio Valley approaches on Wednesday. Moisture and lift with an associated warm front brings chances of showers mainly in the afternoon. Showers will be more likely starting late in the day for western zones, and early evening for most of the rest of the area. Upper support for the system weakens in the vicinity of the Great Lakes later Wednesday night, and deterministic models are still showing a weak low center developing near the Mid-Atlantic coast with perhaps some mid level shortwave energy. This low is still progged to remain south of the forecast area, but close enough to keep showers likely for most of the area through Thursday.

The low to the south doesn't move much during Friday with an inverted trough extending northward towards us. At the same time, a cold front approaches from the west. Most, if not all of the day will likely be dry, but cannot rule out an afternoon shower. A chance of showers then follows for Friday night into Saturday with the cold front passing through.

There's some question regarding how far south the departing cold front sinks during Saturday night through Sunday night.
Have therefore gone with slight chance/chance PoPs during this period. Weak high pressure then keeps us dry on Monday.

High temperatures through the period are expected to be within a few degrees of normal with the exception being Thursday, when highs will be only the lower 50s.

AVIATION /06Z TUESDAY THROUGH SATURDAY/
High pressure builds over the terminals tonight into Tuesday night.

VFR through the TAF period.

Winds generally will be N to NW at 5 to 10 kt overnight. The winds become more NW into the morning and remain NW through Tuesday with speeds closer to 10 kt, and gusts around 15-20 kt by late morning until early evening. A coastal sea breeze will be possible later in the day, though there still remains uncertainty with this. Added TEMPO for wind shifts more to the SW at KJFK, KISP, and KGON. The winds lighten and remain mainly N to NNE Tuesday evening, becoming light and variable for outlying terminals.

...NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty...

Timing of gusts starting Tuesday may be off by an hour or two. Gusts on Tuesday may be more occasional.

Late day S-SW sea breeze possible on Tuesday for KJFK, timing may be off by a couple of hours with confidence in occurrence below average.

OUTLOOK FOR 06Z WEDNESDAY THROUGH SATURDAY...

Tue night: VFR. NW gusts end in the evening, mainly light N winds.

Wed and Thu: MVFR or lower possible at times with potential for rain showers, mostly Wed night into early Thu. E winds 10 to 15 kt with gusts near 20 kt.

Fri: MVFR or lower possible with rain showers.

Sat: MVFR possible early with showers.

Detailed information, including hourly TAF wind component forecasts, can be found at: https:/ www.weather.gov/zny/n90

MARINE
The small craft advisory on the eastern ocean has been allowed to expire as seas generally get below 5 ft. Going forward winds and seas will remain below advisory levels through Wednesday.
Winds increase Wednesday night as the pressure gradient tightens in response to a broad area of low pressure approaching. SCA conds become likely on the ocean by the end of the night, and possibly on some of the other waters as well. Winds increase further during Thursday as a low center develops to the south.
Once again, advisory conditions still likely on the ocean and potentially for other spots. Winds diminish Thursday night into Friday, however a lingering swell with on onshore flow may keep ocean seas above 5 ft through at least Friday morning. Sub- advisory conditions on all waters otherwise Friday afternoon through Saturday.

HYDROLOGY
The weather is dry overnight through Tuesday night. A half inch to inch of rainfall is expected from Wednesday afternoon through Thursday afternoon. No hydrologic impacts are expected with this event.

OKX WATCHES/WARNINGS/ADVISORIES
CT...None.
NY...None.
NJ...None.
MARINE...None.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
LDLC3 - New London Ledge CT - Ledge Light Weather 0 mi35 min NW 7G8 57°F
NLHC3 5 mi50 min 57°F 56°F29.98
MTKN6 - 8510560 - Montauk, NY 19 mi50 min 50°F 48°F29.94
QPTR1 - 8454049 - Quonset Point, RI 41 mi50 min WNW 2.9G5.1 54°F 29.99
NWPR1 - 8452660 - Newport, RI 42 mi50 min NNW 1.9G2.9 53°F 48°F29.99
PDVR1 42 mi50 min SSW 1.9G2.9 53°F 29.9942°F
NWHC3 - 8465705 - New Haven, CT 44 mi50 min N 5.1G6 56°F 48°F30.02
NAXR1 - Narragansett Bay Reserve, RI 46 mi95 min NE 2.9 51°F 29.9844°F
PRUR1 46 mi50 min 54°F 42°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 46 mi50 min NNE 1G2.9 53°F 30.01
CPTR1 - 8452944 - Conimicut Light, RI 48 mi50 min NW 4.1G4.1 53°F 49°F29.98


Wind History for No Ports station near this location
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No data


Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KGON GROTONNEW LONDON,CT 3 sm24 minNNW 0310 smOvercast55°F32°F41%29.99
KWST WESTERLY STATE,RI 15 sm27 minNNW 0410 smOvercast55°F34°F44%29.99
KMTP MONTAUK,NY 17 sm26 minN 04--55°F37°F51%30.01
KSNC CHESTER,CT 23 sm25 minWNW 0310 smMostly Cloudy54°F28°F38%30.01
Link to 5 minute data for KGON


Wind History from GON
(wind in knots)
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Tide / Current for Silver Eel Pond, Fishers Island, N.Y.
   
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Silver Eel Pond
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Tue -- 03:06 AM EDT     Moonset
Tue -- 04:20 AM EDT     2.27 feet High Tide
Tue -- 06:06 AM EDT     Sunrise
Tue -- 11:09 AM EDT     0.41 feet Low Tide
Tue -- 12:22 PM EDT     Moonrise
Tue -- 05:13 PM EDT     1.94 feet High Tide
Tue -- 07:29 PM EDT     Sunset
Tue -- 11:26 PM EDT     0.61 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Silver Eel Pond, Fishers Island, N.Y., Tide feet
12
am
1
1
am
1.4
2
am
1.8
3
am
2.1
4
am
2.3
5
am
2.2
6
am
2.1
7
am
1.8
8
am
1.5
9
am
1
10
am
0.6
11
am
0.4
12
pm
0.5
1
pm
0.8
2
pm
1.2
3
pm
1.5
4
pm
1.8
5
pm
1.9
6
pm
1.9
7
pm
1.8
8
pm
1.6
9
pm
1.3
10
pm
0.9
11
pm
0.6



Tide / Current for The Race, Long Island Sound, New York Current
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The Race
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Tue -- 12:23 AM EDT     0.00 knots Slack
Tue -- 03:06 AM EDT     Moonset
Tue -- 03:13 AM EDT     1.83 knots Max Flood
Tue -- 06:06 AM EDT     Sunrise
Tue -- 06:34 AM EDT     -0.00 knots Slack
Tue -- 09:40 AM EDT     -2.33 knots Max Ebb
Tue -- 12:22 PM EDT     Moonrise
Tue -- 01:09 PM EDT     0.00 knots Slack
Tue -- 04:04 PM EDT     1.81 knots Max Flood
Tue -- 07:20 PM EDT     -0.00 knots Slack
Tue -- 07:30 PM EDT     Sunset
Tue -- 10:13 PM EDT     -2.00 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

The Race, Long Island Sound, New York Current, knots
12
am
-0.4
1
am
0.6
2
am
1.5
3
am
1.8
4
am
1.7
5
am
1.3
6
am
0.6
7
am
-0.5
8
am
-1.5
9
am
-2.2
10
am
-2.3
11
am
-1.9
12
pm
-1.2
1
pm
-0.2
2
pm
0.9
3
pm
1.6
4
pm
1.8
5
pm
1.7
6
pm
1.2
7
pm
0.4
8
pm
-0.7
9
pm
-1.6
10
pm
-2
11
pm
-1.9




Weather Map
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