Greenport, NY Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Greenport, NY

April 15, 2024 11:07 AM EDT (15:07 UTC) Change Location
Sunrise 6:08 AM   Sunset 7:32 PM
Moonrise 11:20 AM   Moonset 2:28 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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ANZ340 Peconic And Gardiners Bays- 1012 Am Edt Mon Apr 15 2024

Today - W winds 5 to 10 kt. Waves 1 ft or less. Slight chance of showers late.

Tonight - NW winds 5 to 10 kt. Waves 1 ft or less. Slight chance of showers in the evening.

Tue - W winds 5 to 10 kt. Waves 1 ft or less.

Tue night - W winds 5 to 10 kt, becoming N after midnight. Waves 1 ft or less.

Wed - NE winds around 5 kt, becoming se in the afternoon. Waves 1 ft or less. Slight chance of showers in the afternoon.

Wed night - SE winds 5 to 10 kt, becoming E 10 to 15 kt with gusts up to 20 kt after midnight. Waves 1 ft or less, then around 2 ft after midnight. Showers likely.

Thu - E winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. Chance of showers.

Thu night - E winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. Chance of showers.

Fri - E winds around 10 kt with gusts up to 20 kt. Waves 1 ft or less.

Fri night - S winds 5 to 10 kt. Waves 1 ft or less. Chance of showers.

ANZ300 1012 Am Edt Mon Apr 15 2024

Synopsis for the long island and connecticut coastal waters - A stationary front across the area this morning will wash out by afternoon. A secondary cold front or surface trough will then move through this evening, followed by high pressure building in for Tuesday. 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 Greenport, NY
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Area Discussion for - New York City/Upton, NY
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FXUS61 KOKX 151440 AFDOKX

Area Forecast Discussion National Weather Service New York NY 1040 AM EDT Mon Apr 15 2024

SYNOPSIS
A stationary front across the area this morning will wash out by afternoon. A secondary cold front or surface trough will then move through early this evening, followed by high pressure building in for Tuesday. 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.

NEAR TERM /THROUGH TONIGHT/
The stationary front seems to have dissipated as a west to northwest flow has developed this morning, and dew points inland have begun to lower. Showers with the front have also ended. Otherwise much of the day is forecast to be dry. With deep mixing having developed temperatures rose quickly this morning, and updated, and raised, high temperatures mainly across the inland regions, leaning toward the MOS guidance.

Initial thinking here is that any seabreeze development along the coast should be brief and not work too far in from the coast.

An amplifying upper trough across eastern Canada and into the Northeast will send a push of cooler air south, reflected as a secondary cold front or surface trough moving through the area late this afternoon/early this evening. Some of the CAMs are generating showers along the boundary, mainly from LI and south across the ocean waters as the boundary interacts with a little more available moisture. Preference is toward a warmer and deeper boundary layer per the 00Z GFS, and drier. Thus, instability is very limited and chances for showers are low at this time. In addition, with the deeper mixed layer, expect some wind gusts this afternoon of 20 to 25 mph, with a few higher gusts possible. The westerly flow will also allow for a very warm day even at down at the coast (minus any seabreeze development). High temperatures will be about 12-17 degrees above normal.

Following any showers this evening, winds will diminish and become northerly overnight. It will be a cooler night, but still a few degrees above normal, generally in the 40s.

SHORT TERM /TUESDAY THROUGH WEDNESDAY/
High pressure builds in from the NW into Tuesday night, but then retreats offshore on Wednesday as an upper low lifts up into the mid and upper Mississippi Valley. This will upper ridge axis will shift east of the area late Wednesday. Warm advection on the backside and an approaching surface warm front form the SW will result in increasing clouds and chances of rain, especially in the late afternoon and evening hours. Highs Tuesday will be several degrees cooler, but still on the mild side. The same goes for Tuesday night. With the high moving offshore on Wednesday, ESE winds and increasing clouds will allow for a much cooler day, in fact more in line with normal.

LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/
*Key Messages*

*Unsettled conditions Wednesday night through Thursday with showers likely.

*Near normal temperatures for the period.

Only minor changes were made to the extended forecast, and the NBM was closely followed.

Global ensemble means continue to depict synoptic scale ridging deamplifying to a more zonal flow by the end of the workweek and into next weekend.

To start the period, shower chances increase late Wednesday into Thursday as a warm front slowly approaches the region from the south. While PWATS look to be near 1-1.25" per latest BUFKIT model soundings (near the daily max via SPC sounding climo for OKX), better forcing remains back to the west with main sfc low over the OH Valley. Thus expecting mainly light rain event at this point.
Latest global ensemble guidance also continues to indicate that a wave of low pressure develops along this warm front to the south, and so the area remains on the cool side. That would limit any convective potential to areas south of our area.

The wave and front to the south head offshore to the east on Friday, allowing for brief weak high pressure to build in. Clouds and showers may hang around-especially for eastern portions of the area-- into midday Friday. Another frontal system approaches from the west, and looks to move quickly through on Saturday afternoon.

Temperatures will remain near to slightly above normal for much of the week.

AVIATION /15Z MONDAY THROUGH FRIDAY/
A weak cold front then moves across this evening. High pressure builds over the terminals on Tuesday.

VFR. A few showers are possible this evening with a weak frontal passage, but confidence in coverage remains too low to include in TAFs. Any shower activity will likely not reduce cigs/vsbys significantly.

General NW flow for most late this morning backs more WNW or W toward 16 or 17Z, with speeds 12-15G20-25kt thru the afternoon.
Late day S/SSW sea breeze likely for JFK and ISP. Gusts largely end after 22Z, and winds become NW after 00Z Tue through the end of the TAF period. Speeds a bit lower on Tuesday, closer to 10 kt, with gusts toward 20 kt possible by mid to late morning.

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

Winds may be more NNW for a period into late this morning, before backing W
AVIATION /15Z MONDAY THROUGH FRIDAY/
A weak cold front then moves across this evening. High pressure builds over the terminals on Tuesday.

VFR. A few showers are possible this evening with a weak frontal passage, but confidence in coverage remains too low to include in TAFs. Any shower activity will likely not reduce cigs/vsbys significantly.

General NW flow for most late this morning backs more WNW or W toward 16 or 17Z, with speeds 12-15G20-25kt thru the afternoon.
Late day S/SSW sea breeze likely for JFK and ISP. Gusts largely end after 22Z, and winds become NW after 00Z Tue through the end of the TAF period. Speeds a bit lower on Tuesday, closer to 10 kt, with gusts toward 20 kt possible by mid to late morning.

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

Winds may be more NNW for a period into late this morning, before backing W.

Late day S seabreeze likely at JFK. Timing of onset may be off by an hour or so.

Gusts on Tuesday may be more occasional.

OUTLOOK FOR 12Z TUESDAY THROUGH FRIDAY...

Tue: NW gusts 15 to 20 kt into the evening. VFR.

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

Fri: Chance of rain showers and MVFR.

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

MARINE
No changes to the winds and seas at this time.

SCA continues for the ocean waters into early this afternoon for seas. Winds will become WSW on the waters, generally around 10 kt or less, but a bit stronger along the coast with gust potential to around 20 kt. Wind shift to the north tonight at less than 10 kt. Sub-SCA conditions are expected on all waters through midday Thursday. Thereafter, SCA conditions may then return to the ocean waters Thursday afternoon into Friday as a frontal system remains near the waters.

HYDROLOGY
There are no hydrologic concerns thought the forecast period.

OKX WATCHES/WARNINGS/ADVISORIES
CT...None.
NY...None.
NJ...None.
MARINE...Small Craft Advisory until 2 PM EDT this afternoon for ANZ350- 353-355.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
LDLC3 - New London Ledge CT - Ledge Light Weather 21 mi38 min N 8.9G9.9 59°F
MTKN6 - 8510560 - Montauk, NY 22 mi50 min 51°F 47°F29.76
NLHC3 24 mi50 min 56°F 54°F29.83
NWHC3 - 8465705 - New Haven, CT 31 mi50 min SSW 4.1G4.1 58°F 48°F29.83
BRHC3 - 8467150 - Bridgeport, CT 43 mi50 min S 5.1G7 56°F 29.78


Wind History for No Ports station near this location
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No data


Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KSNC CHESTER,CT 21 sm12 minvar 06G1310 smClear70°F50°F49%29.82
KFOK FRANCIS S GABRESKI,NY 23 sm14 minNW 13G2110 smA Few Clouds73°F52°F47%29.83
KGON GROTONNEW LONDON,CT 23 sm11 minNE 0310 smA Few Clouds66°F52°F60%29.81
KMTP MONTAUK,NY 24 sm13 minN 04--59°F48°F67%29.84
Link to 5 minute data for KSNC


Wind History from SNC
(wind in knots)
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Tide / Current for Greenport, Shelter Island Sound, New York
   
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Greenport, Shelter Island Sound, New York, Tide feet



Tide / Current for Shinnecock Canal, Railroad Bridge, New York Current
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Shinnecock Canal
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Mon -- 12:11 AM EDT     1.29 knots Max Flood
Mon -- 02:28 AM EDT     Moonset
Mon -- 03:18 AM EDT     -0.00 knots Slack
Mon -- 06:10 AM EDT     Sunrise
Mon -- 06:39 AM EDT     -1.30 knots Max Ebb
Mon -- 10:27 AM EDT     0.00 knots Slack
Mon -- 11:20 AM EDT     Moonrise
Mon -- 12:57 PM EDT     0.91 knots Max Flood
Mon -- 03:14 PM EDT     First Quarter
Mon -- 03:37 PM EDT     -0.00 knots Slack
Mon -- 06:57 PM EDT     -1.09 knots Max Ebb
Mon -- 07:30 PM EDT     Sunset
Mon -- 10:29 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Shinnecock Canal, Railroad Bridge, New York Current, knots
12
am
1.3
1
am
1.2
2
am
0.9
3
am
0.2
4
am
-0.4
5
am
-0.9
6
am
-1.2
7
am
-1.3
8
am
-1.1
9
am
-0.9
10
am
-0.3
11
am
0.4
12
pm
0.8
1
pm
0.9
2
pm
0.8
3
pm
0.4
4
pm
-0.2
5
pm
-0.7
6
pm
-1
7
pm
-1.1
8
pm
-1
9
pm
-0.7
10
pm
-0.3
11
pm
0.4




Weather Map
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GEOS Local Image of Northeast   
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Upton, NY,



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