Thursday, April22, 2021
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Marine Weather and Tides
Centre Island, NY

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:02AMSunset 7:42PM Thursday April 22, 2021 9:53 AM EDT (13:53 UTC) Moonrise 2:23PMMoonset 3:57AM Illumination 81% Phase: Waxing Gibbous; Moon at 10 days in cycle
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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ANZ335 Long Island Sound West Of New Haven Ct/port Jefferson Ny- 944 Am Edt Thu Apr 22 2021
.gale warning in effect until 8 pm edt this evening...
Today..W winds 25 to 30 kt, diminishing to around 20 kt this afternoon. Seas 2 to 3 ft.
Tonight..W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 35 kt early. Seas 2 to 3 ft.
Fri..W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft.
Fri night..W winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 1 to 2 ft in the evening, then 1 ft or less.
Sat..SW winds 5 to 10 kt. Seas 1 ft or less.
Sat night..SE winds 5 to 10 kt. Seas 1 ft or less. Chance of rain in the evening, then rain after midnight with vsby 1 to 3 nm.
Sun..NE winds 10 to 15 kt with gusts up to 25 kt. Seas 1 ft or less. Rain.
Sun night..NW winds 10 to 15 kt with gusts up to 25 kt. Seas 1 to 2 ft.
Mon..NW winds 10 to 15 kt with gusts up to 25 kt. Seas 1 to 2 ft.
Mon night..NW winds 5 to 10 kt. Seas 1 ft or less.
ANZ300 944 Am Edt Thu Apr 22 2021
Synopsis for the long island waters and new york harbor.. Deepening low pressure over the canadian maritimes will slowly lift north and east today, becoming nearly stationary tonight, then slowly weakening and resuming its trek northward on Friday. At the same time, high pressure builds to the south and west, passing offshore on Saturday. Low pressure approaches from the southwest late Saturday and passes to the south and east on Sunday. High pressure builds in Sunday night and Monday.


7 Day Forecast for Marine Location Near Centre Island, NY
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location: 40.94, -73.51     debug


Area Discussion for - New York City/Upton, NY
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FXUS61 KOKX 221118 AFDOKX

Area Forecast Discussion National Weather Service New York NY 718 AM EDT Thu Apr 22 2021

SYNOPSIS. Deepening low pressure over the Canadian Maritimes will slowly lift north and east today, becoming nearly stationary tonight, then slowly weakening and resuming its trek northward on Friday. At the same time, high pressure builds to the south and west, passing offshore on Saturday. Low pressure approaches from the southwest late Saturday and passes to the south and east on Sunday. High pressure then builds in from the west Sunday night into Monday before settling over the area on Tuesday. The high shifts offshore on Wednesday.

NEAR TERM /UNTIL 6 PM THIS EVENING/. A few flurries or very light snow showers have been able to reach the ground early this morning across portions of the New York City metro area and interior southern Connecticut. This activity should quickly come to an end this morning.

Gusts have been lost in some locations and those that are gusting seeing about 20 to 25 mph. Winds will ramp back up in the new few hours as heating ensues and the depth of the mixed layer increases.

Deepening low pressure over the Canadian Maritimes and high pressure building to the south and west will maintain a strong pressure gradient across the region. This will result in strong west winds with gusts up to 35 mph (a few higher gusts possible).

Deep-layered cyclone flow will allow for instability clouds to form above 5000 ft late this morning into this afternoon. A mostly sunny start will transition to partly to mostly cloudy.

At the same time, an unseasonably cold airmass will be in place for late April, with highs struggling to get much above 50. This will be about 10 degrees below normal and will feel even colder with the gusty west winds.

SHORT TERM /6 PM THIS EVENING THROUGH SATURDAY NIGHT/. Winds will slacken somewhat tonight with the loss of the deep daytime mixing. Still though, gusts up to 25 mph will be possible and even with mostly clear skies, the radiational cooling component will be hindered. The airmass will moderate somewhat as well. Confidence for freezing or lower temperatures is not sufficient enough at this time to issue another freeze watch or warning, but it's not out of the possibility. The best chance at this time would be across the western half of Orange County in the Lower Hudson Valley.

Friday will continue to be gusty, but less so than prior day, and temperatures will to seasonable levels with highs generally in the lower 60s.

As low pressure weakens Friday into Saturday, gusts will be lost Friday night and high pressure will build in from the southwest. Conditions will remain dry and mild on Saturday as the high builds offshore and winds turn around to the south in the afternoon.

Global models remain in good agreement with a progressive southern branch low that interacts with a northern branch shortwave trough moving across the Great Lakes. There has been no indication at this time of phasing of the two branches. Rain from the system will overspread the area from SW to NE during the evening and into the overnight hours.

LONG TERM /SUNDAY THROUGH WEDNESDAY/. The upper trough crosses the area on Sunday, with its associated surface low passing south of Long Island during the day. After a wet start to the day, rain will taper off from west to east during the afternoon as the low moves east of the area. Gusty northwest flow then develops Sunday night into Monday as the pressure gradient tightens between the departing low and high pressure building to the west.

The high builds over the area on Tuesday before shifting offshore on Wednesday. With rising heights aloft, this should lead to a gradual warming trend. After near normal temperatures on Sunday and Monday, temperatures return to above normal Tuesday, and by Wednesday temperatures may be as much as 10 degrees above seasonal normals.

AVIATION /11Z THURSDAY THROUGH MONDAY/. Low pressure continues to exit to the northeast. High pressure builds towards the area today.

VFR conditions through the TAF period.

WNW winds will increase this morning with gusts to 30-35 kt from late this morning through the afternoon. Winds then decrease this evening, with gusts falling to 25 kt or less at coastal terminals. Gusts may come to an end entirely for a few hours very late tonight into early Friday morning at outlying terminals.

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

No unscheduled amendments expected.

OUTLOOK FOR 12Z FRIDAY THROUGH MONDAY. Friday. VFR. WNW winds G20-25kt. Saturday. VFR. Saturday night-Sunday. MVFR/IFR in rain. Monday. VFR.

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

MARINE. Marginal gales will continue across all waters today and into this evening, ending on the non-ocean waters first. There is the possibility that the gales will need to be lowered earlier as the gusts may become more occasional at 35 kt late in the day. SCA conditions will remain across the waters on Friday with only lingering 5 ft seas on the ocean Friday night as high pressure builds in from the southwest. Sub-SCA conditions are forecast across all waters Saturday and Saturday night.

SCA conditions will develop on Sunday as both winds and seas increase in response to deepening low pressure passing south of Long Island. As the low moves off to the northeast, winds will shift to the NW with SCA gusts continuing Sunday night before gradually diminishing during the day on Monday. By Monday night, both winds and seas will likely fall below SCA levels on all waters as high pressure begins to build across the waters.

FIRE WEATHER. An SPS has been coordinated with the state of CT for the mention of elevated risk of wildfire spread should ignition occur.

Both today and Friday will pose an elevated risk of wildfire spread due to low RH and gusty west winds. Min RH values both days will generally be less than 30 percent.

Rainfall amounts on the order of 0.25 to 0.50 inches from Wednesday will likely factor into how quickly fine fuels can dry out. This should occur quickly though due to strong west winds and low RH values. The greater risk for potential fire spread appears to be on Friday.

HYDROLOGY. No hydrologic impacts are expected through the period.

OKX WATCHES/WARNINGS/ADVISORIES. CT . Freeze Warning until 9 AM EDT this morning for CTZ005>008. NY . Freeze Warning until 9 AM EDT this morning for NYZ067>070. NJ . Freeze Warning until 9 AM EDT this morning for NJZ002-004-103. MARINE . Gale Warning until 8 PM EDT this evening for ANZ331-332-335- 338-340-345. Gale Warning until 11 PM EDT this evening for ANZ350-353-355.

SYNOPSIS . FEB/DW NEAR TERM . DW SHORT TERM . DW LONG TERM . FEB AVIATION . FEB MARINE . FEB/DW FIRE WEATHER . HYDROLOGY . FEB/DW


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KPTN6 - 8516945 - Kings Point, NY 16 mi53 min N 18 G 24 38°F 1011.4 hPa (+1.9)
BRHC3 - 8467150 - Bridgeport, CT 24 mi53 min WNW 9.9 G 21 38°F 48°F1008.4 hPa (+1.4)
44069 28 mi83 min WNW 19 G 23 39°F 53°F27°F
BATN6 - 8518750 - The Battery, NY 31 mi53 min 38°F 50°F1011.4 hPa (+1.8)
ROBN4 - 8530973 - Robins Reef, NJ 35 mi53 min WNW 20 G 27 37°F 1011 hPa (+1.7)
BGNN4 - 8519483 - Bergen Point West Reach, NJ 40 mi53 min 51°F1011 hPa (+1.6)
MHRN6 40 mi53 min W 19 G 28
NWHC3 - 8465705 - New Haven, CT 40 mi53 min NW 15 G 19 38°F 50°F1009 hPa (+1.3)
44065 - Entrance to New York Harbor 41 mi33 min WNW 23 G 29 1010.7 hPa
SDHN4 - 8531680 - Sandy Hook, NJ 42 mi53 min WNW 28 G 34 38°F 1011.8 hPa (+1.5)
44039 - Central Long Island Sound 47 mi53 min W 23 G 31 39°F 46°F5 ft

Wind History for Kings Point, NY
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Farmingdale - Republic Airport, NY15 mi60 minW 15 G 2510.00 miFair39°F16°F39%1009.9 hPa
White Plains - Westchester County Airport, NY15 mi57 minWNW 17 G 2910.00 miMostly Cloudy36°F16°F44%1009.7 hPa
New York, La Guardia Airport, NY23 mi62 minNW 19 G 2610.00 miA Few Clouds and Breezy40°F16°F38%1010.5 hPa
Islip, Long Island Mac Arthur Airport, NY24 mi57 minWNW 17 G 2710.00 miPartly Cloudy39°F18°F43%1009.4 hPa
New York, Kennedy International Airport, NY24 mi62 minWNW 18 G 2710.00 miA Few Clouds and Breezy39°F14°F36%1010.9 hPa

Link to 5 minute data for KHPN

Wind History from HPN (wind in knots)
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2 days ago3CalmSE9S3S9N7SE6S7S8S3CalmCalmCalmCalmNW3NW4NW4W4W4W5W3Calm3SW8

Tide / Current Tables for Bayville Bridge, Oyster Bay, Long Island, New York
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Bayville Bridge
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Thu -- 01:54 AM EDT     1.17 feet Low Tide
Thu -- 03:57 AM EDT     Moonset
Thu -- 06:04 AM EDT     Sunrise
Thu -- 07:53 AM EDT     7.52 feet High Tide
Thu -- 02:23 PM EDT     0.68 feet Low Tide
Thu -- 02:23 PM EDT     Moonrise
Thu -- 07:41 PM EDT     Sunset
Thu -- 08:25 PM EDT     7.67 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.41.51.21.734.66.17.27.575.74.22.71.40.70.91.93.65.36.77.67.56.65.1

Tide / Current Tables for Throg's Neck, Long Island Sound, New York Current
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Throg's Neck
Click for Map
Thu -- 02:35 AM EDT     0.88 knots Max Flood
Thu -- 03:58 AM EDT     Moonset
Thu -- 05:21 AM EDT     -0.00 knots Slack
Thu -- 06:05 AM EDT     Sunrise
Thu -- 08:48 AM EDT     -0.60 knots Max Ebb
Thu -- 11:30 AM EDT     0.00 knots Slack
Thu -- 02:25 PM EDT     Moonrise
Thu -- 03:00 PM EDT     0.85 knots Max Flood
Thu -- 05:32 PM EDT     -0.00 knots Slack
Thu -- 07:42 PM EDT     Sunset
Thu -- 09:10 PM EDT     -0.65 knots Max Ebb
Thu -- 11:51 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.40.80.80.40.1-0.1-0.3-0.5-0.6-0.4-0.10.10.20.60.80.60.2-0.1-0.3-0.5-0.6-0.6-0.3

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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