Wednesday, January22, 2020
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Marine Weather and Tides
Shelter Island, NY

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:08AMSunset 4:55PM Wednesday January 22, 2020 8:22 AM EST (13:22 UTC) Moonrise 6:24AMMoonset 3:49PM Illumination 7% Phase: Waning Crescent; Moon at 27 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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ANZ340 Peconic And Gardiners Bays- 637 Am Est Wed Jan 22 2020
Today..W winds around 5 kt. Waves 1 ft or less.
Tonight..W winds around 5 kt. Waves 1 ft or less.
Thu..W winds around 5 kt. Waves 1 ft or less.
Thu night..NW winds around 5 kt. Waves 1 ft or less.
Fri..NE winds 5 to 10 kt. Waves 1 ft or less.
Fri night..NE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Waves 1 ft or less, then around 2 ft after midnight.
Sat..E winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Waves 2 to 3 ft. Rain and snow likely in the morning, then rain in the afternoon. Vsby 1 to 3 nm in the morning.
Sat night..E winds 20 to 25 kt, becoming se 10 to 15 kt after midnight. Waves 2 to 3 ft. Rain.
Sun..SW winds 10 to 15 kt, becoming W in the afternoon. Waves 1 ft or less, then around 2 ft in the afternoon. Rain likely, mainly in the morning.
Sun night..NW winds 10 to 15 kt. Waves around 2 ft. Chance of snow and rain in the evening. Vsby 1 to 3 nm.
ANZ300 637 Am Est Wed Jan 22 2020
Synopsis for the long island waters and new york harbor.. High pressure remains over the waters through Thursday, then retreats to the north on Friday. Low pressure will likely impact the waters this weekend.


7 Day Forecast for Marine Location Near Shelter Island, NY
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location: 41.07, -72.32     debug


Area Discussion for - New York City/Upton, NY
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FXUS61 KOKX 221136 AFDOKX

Area Forecast Discussion National Weather Service New York NY 636 AM EST Wed Jan 22 2020

SYNOPSIS. High pressure remains over the region through Thursday. The high moves away from the region on Friday. Low pressure impacts the region this weekend. High pressure builds back in early next week.

NEAR TERM /UNTIL 6 PM THIS EVENING/. A 1034 high was centered over VA/WV this morning. The high will build over the forecast area today, producing dry weather and seasonal temperatures after a chilly start. The NBM was used for highs. Light winds due to the position of the high.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM THURSDAY/. Fair weather will continue through Thursday with thickening high clouds late tonight and Thursday. A blend of the ADJMET/ADJMAV was used for temperatures tonight as the NBM looked very warm considering the lack of wind. The NBM was used however for highs on Thursday with a developing southwest wind. Temperatures looks to reach the 40s for all but the higher elevations across the interior.

LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/. Another dry day expected on Friday as high pressure remains in control. It will be mostly sunny with high clouds moving in through the afternoon ahead of a developing low pressure system. Temperatures will be above normal once again with highs in the 40s.

The main focus for the long term remains the potential storm system for the weekend. Models continue to suggest a strong cutoff upper low tracking across the Ohio Valley and pushing eastward. A secondary low will form just off the coast bringing widespread precipitation into the area by Saturday morning and lingering into Sunday. Precip type will all depend on the track and evolution of the secondary low, but as of now it looks primarily to be a rain even for the coast with a wintry mix inland as the low looks to pass over or just south of Long Island.

While the steadiest precip looks to move out by late Saturday night, cyclonic flow continues on Sunday which will keep lingering rain or snow showers in the forecast through most of the day.

High pressure will build in behind the departing storm Monday and Tuesday with high temperatures about 5 degrees above normal.

AVIATION /12Z WEDNESDAY THROUGH SUNDAY/. High pressure settles over the area today and tonight.

VFR with few high clouds. Winds remain light this morning, and then will be west/southwest around 5 kt this afternoon. Light or calm winds are expected tonight.

. NY Metro Enhanced Aviation Weather Support .

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

KJFK TAF Comments: No unscheduled amendments expected.

The afternoon KJFK haze potential forecast is GREEN . which implies slant range visibility 7SM or greater outside of cloud.

KLGA TAF Comments: No unscheduled amendments expected.

The afternoon KLGA haze potential forecast is GREEN . which implies slant range visibility 7SM or greater outside of cloud.

KEWR TAF Comments: No unscheduled amendments expected.

The afternoon KEWR haze potential forecast is GREEN . which implies slant range visibility 7SM or greater outside of cloud.

KTEB TAF Comments: No unscheduled amendments expected.

KHPN TAF Comments: No unscheduled amendments expected.

KISP TAF Comments: No unscheduled amendments expected.

OUTLOOK FOR 12Z THURSDAY THROUGH SUNDAY. Thursday-Friday night. VFR. Saturday-Saturday night. MVFR/IFR in developing rain at the coast, mixed precipitation across the interior. E winds 10-20G20-25 kt during the day diminish at night. Sunday. MVFR/IFR possible in lingering showers. Rain/snow mix possible in any showers across the interior.

MARINE. Winds and seas will remain below Small Craft Advisory levels through Thursday. Winds and seas increase on Friday ahead of an approaching system. Seas on the ocean will build to 5 feet by Friday night with SCA conditions likely on Saturday for all waters. Winds and seas will remain at SCA levels through early Sunday across the ocean waters before subsiding late in the day.

HYDROLOGY. A widespread precipitation event is likely this weekend. Precipitation amounts remain uncertain at this time therefore it is still too early to determine what impacts may occur.

EQUIPMENT. NYC NOAA Weather Radio Station KWO35 (162.55 MHz) is still operating at reduced power.

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

SYNOPSIS . NEAR TERM . PW SHORT TERM . LONG TERM . CB AVIATION . PW MARINE . HYDROLOGY . EQUIPMENT .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MTKN6 - 8510560 - Montauk, NY 19 mi53 min 27°F 37°F1031.3 hPa
LDLC3 - New London Ledge CT - Ledge Light Weather 21 mi28 min N 8.9 G 11 21°F 1026.9 hPa15°F
NLNC3 - 8461490 - New London, CT 24 mi53 min N 5.1 G 7 16°F 43°F1031.4 hPa
NWHC3 - 8465705 - New Haven, CT 34 mi53 min Calm G 1.9 19°F 37°F1031.4 hPa
BRHC3 - 8467150 - Bridgeport, CT 46 mi53 min N 2.9 G 5.1 18°F 38°F1031.7 hPa

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Montauk, Montauk Airport, NY21 mi29 minNW 4 mi28°F16°F60%1031.4 hPa
The Gabreski Airport, NY23 mi30 minN 010.00 miFair12°F7°F80%1032.2 hPa
Groton / New London, Groton / New London Airport, CT23 mi27 minN 410.00 miFair16°F9°F74%1031.5 hPa
Chester, Chester Airport, CT24 mi48 minN 010.00 miFair18°F12°F79%1030.5 hPa

Link to 5 minute data for KMTP

Wind History from MTP (wind in knots)
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Last 24hrNW10
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NW10NW10N10N12------N8----N6N8N5N6N7N5N4
1 day agoNW7NW8NW11
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2 days agoCalmCalm6S7
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S7S93SW4W10
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Tide / Current Tables 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.


Tide / Current Tables for Shinnecock Canal, Railroad Bridge, New York Current
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Shinnecock Canal
Click for Map
Wed -- 01:10 AM EST     0.00 knots Slack
Wed -- 04:21 AM EST     1.67 knots Max Flood
Wed -- 05:24 AM EST     Moonrise
Wed -- 07:08 AM EST     Sunrise
Wed -- 07:14 AM EST     -0.00 knots Slack
Wed -- 10:24 AM EST     -1.67 knots Max Ebb
Wed -- 02:07 PM EST     0.00 knots Slack
Wed -- 02:50 PM EST     Moonset
Wed -- 04:54 PM EST     Sunset
Wed -- 04:55 PM EST     1.22 knots Max Flood
Wed -- 07:21 PM EST     -0.00 knots Slack
Wed -- 10:32 PM EST     -1.53 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.8-0.20.81.41.71.61.10.2-0.6-1.3-1.6-1.6-1.4-0.9-0.10.71.11.210.3-0.5-1.1-1.5-1.5

Weather Map
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wmap_A
GEOS Local Image of Northeast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for New York City/Upton, NY (8,2,3,4)
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Ground Weather Radar Station Upton, NY
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weather_mapweather_map weather_map

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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.