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

April 21, 2024 10:58 PM EDT (02:58 UTC) Change Location
Sunrise 6:01 AM   Sunset 7:39 PM
Moonrise 5:36 PM   Moonset 5:04 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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ANZ345 South Shore Bays From Jones Inlet Through Shinnecock Bay- 547 Pm Edt Sun Apr 21 2024

Tonight - W winds 5 to 10 kt, becoming nw after midnight. Waves 1 ft or less.

Mon - NW winds 5 to 10 kt. Waves 1 ft or less.

Mon night - SW winds around 5 kt. Waves 1 ft or less.

Tue - S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 1 ft or less.

Tue night - S winds 10 to 15 kt. Waves 1 ft or less.

Wed - SW winds 10 to 15 kt, becoming W in the afternoon. Waves 1 ft or less. Chance of showers.

Wed night - NW winds 15 to 20 kt with gusts up to 25 kt. Waves 1 ft or less. Chance of showers in the evening.

Thu - NW winds 10 to 15 kt with gusts up to 25 kt. Waves 1 to 2 ft.

Thu night - W winds around 10 kt. Waves 1 to 2 ft.

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

Fri night - S winds around 10 kt. Waves 1 ft or less.

ANZ300 547 Pm Edt Sun Apr 21 2024

Synopsis for the long island and connecticut coastal waters - A cold front will slide through early on Monday. High pressure will assume control through Tuesday before moving offshore late Tuesday and Tuesday night. A cold front moves through on Wednesday, followed by high pressure to close out the week. A frontal system may impact the area for the weekend.


7 Day Forecast for Marine Location Near Bellport, NY
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Area Discussion for - New York City/Upton, NY
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FXUS61 KOKX 220000 AFDOKX

Area Forecast Discussion National Weather Service New York NY 800 PM EDT Sun Apr 21 2024

SYNOPSIS
High pressure will generally be in control through Tuesday before moving offshore late Tuesday and Tuesday night. A cold front moves through on Wednesday, followed by high pressure to close out the week. A frontal system may impact the area for next weekend.

NEAR TERM /THROUGH MONDAY/
High clouds will be around this evening as the cirrus canopy from an upper level jet begins to lift northeast. This will pave the way for primarily clear skies to return during the night and into Monday. A weak sfc trough is expected to get further east tonight as a more west to northwest flow behind it attempts to set up. The flow will be weak resulting in light winds and will serve more to reinforce the seasonably cool air that is already in place. Getting closer to midnight eastern areas should primarily clear out with perhaps only just a few high clouds left. The question tonight has to do with whether interior and some rural sections / locations see frost, and to what degree. With dry air in the low levels there may be little moisture at the sfc to help in the formation of frost which was the case last night. The winds should be light enough for a few hours late tonight and temperatures outside of urban areas should primarily get into the 30s, even some lower and middle 30s well to the north in the normally colder locations. However, with the air relatively dry patchy frost as compared to areas or widespread frost appears to be a better fit. Thus it appears to be best not to go with a frost advisory at this time. Also, there may be enough of a overall synoptic flow to preclude some places other than sheltered valleys from completely decoupling which puts the amount of coverage of frost in doubt. With that said, lows tonight should be primarily in the lower half of the 40s for the urban areas, and middle and upper 30s in most outlying areas, with the coldest sheltered areas getting down into the lower and middle 30s. This won't be much different from the previous night. Went with MAV guidance for min temp and dew points.

For Monday look for a good amount of sunshine despite the fact that a cold front slides through as BUFKIT soundings indicate a dry column on a W to NW flow throughout. After a chilly start look for temperatures to recover with mainly lower and middle 60s for most places. Went above blended guidance / NBM based on synoptic regime, think there will be enough of a NW flow for the a large majority of the day to preclude sea breeze advancement. Higher res guidance can overdo this at times, but usually later in the season. However, if the synoptic driven winds end up a bit lighter then the sea breeze can make in-roads sooner, especially for coastal and southeastern sections. Thinking the sea breeze happens very late towards 5 pm closer to the coast and further east, if it even happens at all. One could make the argument to go a few degrees warmer, but based on some sea breeze uncertainty did not get more aggressive with temperature forecast.

SHORT TERM /MONDAY NIGHT THROUGH TUESDAY NIGHT/
For Monday night look again for clear skies and light winds. Dew point readings will likely be a shade higher with a little air mass modification in all likelihood. With light winds more of a certainty for the duration of the night and the lack of any cloud cover the chances for more coverage in terms of frost, and perhaps minor agriculture impacts increases some. Subsequent forecasts will need to take a closer look with respect to this, but expect at least some patchy frost across interior and rural locations. Lows will be primarily in the lower and middle 30s once again further away from urban locales, otherwise mainly upper 30s closer to the coast, with 40s in the more urban locations. Went with MAV guidance for min temp and dew points.

During Tuesday high pressure begins to get further east and should be primarily offshore later in the day. A return flow gets established quickly during the early portions of the afternoon with the winds primarily off the colder ocean and out of the S and SSE.
This wind direction should result in a fairly wide temperatures spread across the region for the afternoon as areas further west and inland won't get the entrainment of the wind off the colder ocean compared to places further east and closer to the coast. Look for a fair amount of sunshine across the region, with perhaps a few mid level clouds encroaching into western sections later in the day.
Went closer to NBM 75th percentile for temps across western third of the area, with some manual adjustments based on climo for this time of year further east.

For Tuesday night with the high getting further east and the approach of the next system from the west look for the winds to veer more to the S and perhaps the SSW towards Wed AM. The column will undergo more of a deep layered SW flow. Thus, clouds will increase, especially above 5 kft or thereabouts. A lot will depend on the speed and the timing of the approach of the frontal boundary, but the column may moisten enough that some light showers or sprinkles could very well break out before daybreak Wed, especially across western most locations. Went slight chance to chance PoPs during the pre-dawn hours towards sunrise.

LONG TERM /WEDNESDAY THROUGH SUNDAY/
Unsettled weather returns to start the period as a mid level trough swings into the Northeast, pushing a surface front through on Wednesday. Moisture appears limited though, PWATs under an inch and surface dew pts mostly under 50F, so not anticipating a widespread significant rainfall with this system. However, a hint of CAPE (a hundred or two joules), steeper low level lapse rates, and speed shear may allow for a few thunderstorms to develop ahead of the advancing boundary in a low CAPE, modest shear environment. As of now, the threat window looks to be in the later morning and afternoon hours, depending on the progression of the front.
Ensembles keep QPF light with the fropa, mostly under a quarter inch outside any convective elements.

The boundary likely moves through by the evening, and the trough axis shifts east of the region Wed night. Ridging gradually builds thereafter into the start of the weekend. Conditions dry out Thursday as a 1030 mb surface high pressure builds in from the Great Lakes. The high remains over the region Friday, before slipping offshore and setting up southerly flow.

This weekend, a shortwave over the Central US will attempt to ride up and over the amplified ridge into the weekend, bringing a return to rain chances. This energy isn't progged to move onshore the West Coast until midweek, so will likely continue to see varying solutions/timing until better sampling is achieved.
Capped PoPs at high chance (50%) to account for this uncertainty.

As for temperatures, they look to average near, to just below, normal for late April. Afternoon highs generally climb into the 60s, with morning lows in the 30s and 40s. The coolest day in the period appears to be Thursday behind the frontal passage, with highs struggling to get out of the 50s for most. Frost/freeze headlines may be needed a couple of mornings late in the week, at least for portions of the local area. With only subtle adjustments, stayed closed to national blended guidance for this update.

AVIATION /00Z MONDAY THROUGH FRIDAY/
High pressure builds in from the west through Monday. An afternoon thermal/lee trough sets up.

VFR. WNW winds generally less than 10 kt overnight, but veer to the NW Monday morning. Chance of an afternoon seabreeze, but looks to be late. Best chance at KJFK and KBDR.

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

There is a chance of a late day seabreeze on Monday. Highest confidence is at KJFK.

OUTLOOK FOR 00Z TUESDAY THROUGH FRIDAY...

Monday-Tuesday: VFR. Chance of showers Tuesday night, mainly late.

Wednesday: MVFR or lower with showers. Isolated thunderstorms.
SW winds 10-15G20-25kt, becoming W-NW in the afternoon into the evening.

Thursday-Friday: VFR.

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

MARINE
Primarily 2 ft ocean seas prevail through Monday night with high pressure in control and a relatively weak pressure gradient overall. Sub-small craft conditions will prevail across the coastal waters through Tuesday, with perhaps more marginal small craft conditions out on the ocean late Tuesday night as seas begin to inch up along with winds out of the south.

A tightening pressure gradient will lead to increasing flow into Wednesday. This should allow SCA conditions to develop on the ocean with seas also climbing to around 5 ft. Non ocean waters may see a period of 25 kt gusts Wed into Wed evening before subsiding behind a cold frontal passage. Seas could linger near SCA criteria on the ocean Wed night before diminishing, then sub SCA conditions expected on all waters thru late week.

HYDROLOGY
No hydrologic concerns exist throughout the forecast period.

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
BRHC3 - 8467150 - Bridgeport, CT 32 mi58 min WNW 1.9G4.1 47°F 29.91
44025 - LONG ISLAND 33 NM South of Islip, NY 36 mi48 min NW 5.8G7.8 47°F 47°F29.9740°F
NWHC3 - 8465705 - New Haven, CT 37 mi58 min NW 5.1G6 48°F 29.96
44022 - Execution Rocks 43 mi43 min NW 7.8 49°F 29.9431°F
KPTN6 - 8516945 - Kings Point, NY 44 mi58 min NW 8.9G9.9 49°F 29.97
44065 - Entrance to New York Harbor 49 mi48 min NW 7.8G9.7 49°F 49°F29.9638°F


Wind History for Bridgeport, CT
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KHWV BROOKHAVEN,NY 6 sm62 mincalm10 smClear45°F28°F53%29.95
KISP LONG ISLAND MAC ARTHUR,NY 10 sm62 minWNW 0610 smMostly Cloudy46°F27°F46%29.94
KFOK FRANCIS S GABRESKI,NY 17 sm65 mincalm10 smClear37°F30°F75%29.96
Link to 5 minute data for KHWV


Wind History from HWV
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Tide / Current for Bellport, Bellport Bay, Long Island, New York
   
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Bellport
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Sun -- 05:03 AM EDT     Moonset
Sun -- 05:16 AM EDT     0.08 feet Low Tide
Sun -- 06:03 AM EDT     Sunrise
Sun -- 10:47 AM EDT     0.79 feet High Tide
Sun -- 05:34 PM EDT     0.05 feet Low Tide
Sun -- 05:35 PM EDT     Moonrise
Sun -- 07:38 PM EDT     Sunset
Sun -- 11:14 PM EDT     0.87 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Bellport, Bellport Bay, Long Island, New York, Tide feet
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Tide / Current for Sayville (Brown Creek), Long Island, New York
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Sayville (Brown Creek)
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Sun -- 04:46 AM EDT     0.07 feet Low Tide
Sun -- 05:04 AM EDT     Moonset
Sun -- 06:03 AM EDT     Sunrise
Sun -- 10:42 AM EDT     0.60 feet High Tide
Sun -- 05:04 PM EDT     0.04 feet Low Tide
Sun -- 05:36 PM EDT     Moonrise
Sun -- 07:38 PM EDT     Sunset
Sun -- 11:09 PM EDT     0.67 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Sayville (Brown Creek), Long Island, New York, Tide feet
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Weather Map
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GEOS Local Image of north east   
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Upton, NY,



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