Monday, April6, 2020
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Marine Weather and Tides
Saybrook Manor, CT

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 6:22AMSunset 7:22PM Monday April 6, 2020 9:40 AM EDT (13:40 UTC) Moonrise 5:41PMMoonset 5:56AM Illumination 98% Phase: Waxing Gibbous; Moon at 13 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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ANZ330 Long Island Sound East Of New Haven Ct/port Jefferson Ny- 540 Am Edt Mon Apr 6 2020
Today..NW winds 5 to 10 kt, becoming W with gusts up to 20 kt this afternoon. Seas 1 ft or less, then around 2 ft this afternoon. Slight chance of showers early.
Tonight..W winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 ft or less.
Tue..SW winds 5 to 10 kt. Seas 1 ft or less.
Tue night..SW winds 5 to 10 kt, becoming S after midnight. Seas 1 ft or less. Showers likely after midnight.
Wed..E winds 5 to 10 kt, becoming ne in the afternoon. Seas 1 ft or less. Showers likely, mainly in the morning.
Wed night..NE winds around 5 kt, becoming se after midnight. Seas 1 ft or less.
Thu..S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 1 ft or less. Chance of showers in the morning, then showers likely in the afternoon.
Thu night..W winds 10 to 15 kt. Seas 2 to 3 ft. Chance of showers in the evening.
Fri..W winds around 15 kt. Seas around 2 ft.
Fri night..NW winds 10 to 15 kt. Seas around 2 ft.
ANZ300 540 Am Edt Mon Apr 6 2020
Synopsis for the long island waters and new york harbor.. High pressure builds across the area through tonight, moving offshore on Tuesday. A low pressure system approaches Tuesday night and moves across on Wednesday. A cold front and its associated deepening low pressure cross the region on Thursday. The low then meanders across the canadian maritimes on Friday


7 Day Forecast for Marine Location Near Saybrook Manor, CT
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location: 41.21, -72.41     debug


Area Discussion for - New York City/Upton, NY
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FXUS61 KOKX 061137 AFDOKX

Area Forecast Discussion National Weather Service New York NY 737 AM EDT Mon Apr 6 2020

SYNOPSIS. High pressure builds across the area through tonight, moving offshore on Tuesday. A low pressure system approaches Tuesday night and moves across on Wednesday. A cold front and its associated deepening low pressure crosses the region on Thursday. The low then meanders across the Canadian Maritimes Friday and Saturday. High pressure may return on Sunday.

NEAR TERM /THROUGH TONIGHT/. The cold front has shifted south of Long Island with a few lingering showers moving offshore through the next hour or two. Decreasing clouds behind the front will lead to mostly sunny skies through the day.

High pressure builds to the west today. NW flow around the high will help lower dew points well into the 20s inland and to around 30 near the coast. As has been the case in recent weeks, a similar surface pattern of a drying NW flow has warmed temperatures above guidance. Have followed suit for todays high temperature forecast with readings well into the 60s across the area. A weak surface trough may set up in the late afternoon, which could allow a light seabreeze to develop near the immediate coast.

The region will remain on the southern periphery of a large upper cyclone across the Canadian Maritimes tonight. Shortwave energy within the NW flow aloft should bring an increase in clouds through the night. Lows will be in the 30s inland and Long Island Pine Barrens and lower to middle 40s elsewhere.

SHORT TERM /TUESDAY THROUGH WEDNESDAY/. A flattening upper ridge approaches on Tuesday. This sends the surface high pressure offshore through the day. The clouds from Monday night may briefly clear before increasing again late in the day ahead of an approaching warm front from the southwest. High temperatures should be able to reach the lower and middle 60s.

A wave of low pressure and a fast moving middle level shortwave will bring increasing chances for showers Tuesday night, especially after midnight. The low moves through on Wednesday morning, along the warm front which tries to lift into the area, and then offshore in the afternoon. The highest probability of showers occurs during the early morning hours with limited chances late in the day as the low and frontal boundary shift away from the region. The shortwave with this system is flat and overall lift is weak. Forecast rain amounts are around a few tenths of an inch. Some partial clearing is possible in the afternoon, which should allow temperatures to reach the low 60s in the NYC metro. Clouds may hold on longest out east with temperatures struggling to get out of the low 50s.

LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/. A ridge briefly moves overhead on Wednesday night, followed by a vigorous cut-off low low diving southeast from the Great Lakes on Thursday. This system will send a strong cold front across the region on Thursday and bring the next likelihood of showers. Energy and lift with this system are impressive. Some of the models have the strongest lift passing to the north, while others have it over the region. Will have to monitor model trends in the next few days as there could be some thunderstorms as well. Have left mention of thunder out of the forecast for now, but will have to monitor subsequent model trends in the next days due to the anomalous nature of the upper pattern. Low pressure deepens as it moves across the region Thursday, along the New England coast Thursday night and then up into the Canadian Maritimes on Friday.

The upper low carves out a longwave trough over the Eastern Seaboard for Friday and possibly Saturday, but model differences are quite large for this time frame. Drier conditions should return during this time frame. There remains uncertainty heading into Sunday as the ECMWF shows a low moving across and other numerical models showing more of a frontal passage.

Temperatures trend below normal Friday into Saturday, then possible near normal on Sunday.

AVIATION /12Z MONDAY THROUGH FRIDAY/. High pressure builds into the region today.

VFR through the TAF period.

NW winds generally around 10 kts with gusts up to 20 kts during the afternoon. A late day (21-23Z) seabreeze is expected to develop at coastal terminals. Winds diminish and become light and variable overnight into Tuesday.

. 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: Gusts may be more occasional than frequent. Timing of sea breeze development may be off by +/- 1 hour.

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

KLGA TAF Comments: Gusts may be more occasional than frequent. Timing of sea breeze development may be off by +/- 1 hour.

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

KEWR TAF Comments: Gusts may be more occasional than frequent.

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

KTEB TAF Comments: Gusts may be more occasional than frequent..

KHPN TAF Comments: Gusts may be more occasional than frequent.

KISP TAF Comments: Gusts may be more occasional than frequent. Timing of sea breeze development may be off by +/- 1 hour.

OUTLOOK FOR 12Z TUESDAY THROUGH FRIDAY. Tuesday. VFR. Wednesday. MVFR to IFR with showers. Thursday. Becoming VFR with showers ending. Friday. VFR.

MARINE. Seas will continue to subside as high pressure builds in today. Sub SCA conditions are expected on all waters through Wednesday.

SCA gusts are forecast Thursday night and Friday across most waters as well as Friday night for the ocean. Ocean seas are forecast to reach near 5 ft Thursday night into Friday as well, mainly to the east of Moriches Inlet. Otherwise, mainly below SCA conditions forecast for the marine long term through Friday night.

FIRE WEATHER. Will have to monitor fire weather potential today as relative humidities fall into the 20s this afternoon. The main inhibiting factor is relatively weak NW winds, which could gust to around 15 mph at times. An SPS may be needed if winds end up a bit stronger than forecast in the afternoon, coinciding with the low relative humidities.

HYDROLOGY. No hydrologic impacts are expected through the upcoming weekend.

TIDES/COASTAL FLOODING. Astronomical tides will be increasing Tuesday and Wednesday due to a full moon (supermoon). Tide levels are likely to fall just short of minor coastal flooding benchmarks with this evenings high tide across the south shore back bays. No coastal flood statement has been issued at this time, but may be needed if guidance trends higher with tide levels. Isolated minor coastal flooding is also possible with Tuesday mornings high tide across the south shore back bays. Several cycles of widespread minor coastal flooding including the western LI sound is possible with Tuesday night and Wednesday high tide cycles.

EQUIPMENT. NYC NOAA Weather Radio Station KWO35 (162.55 MHz) is undergoing its final stages of testing, and is operating at full power.

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

SYNOPSIS . DS NEAR TERM . DS SHORT TERM . DS LONG TERM . JM/DS AVIATION . CB MARINE . CB/JM FIRE WEATHER . HYDROLOGY . DS TIDES/COASTAL FLOODING . EQUIPMENT .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LDLC3 - New London Ledge CT - Ledge Light Weather 19 mi31 min N 13 G 16 51°F 1014.6 hPa38°F
NLNC3 - 8461490 - New London, CT 20 mi53 min N 5.1 G 9.9 49°F 45°F1016.6 hPa
MTKN6 - 8510560 - Montauk, NY 26 mi53 min 46°F 46°F1017 hPa
NWHC3 - 8465705 - New Haven, CT 27 mi53 min E 1 G 6 51°F 46°F1016.9 hPa
BRHC3 - 8467150 - Bridgeport, CT 41 mi53 min N 7 G 9.9 50°F 48°F1017.3 hPa

Wind History for New London, CT
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chester, Chester Airport, CT13 mi46 minVar 610.00 miFair52°F39°F62%1016.9 hPa
Groton / New London, Groton / New London Airport, CT21 mi45 minNNE 1110.00 miA Few Clouds50°F39°F66%1016.6 hPa

Link to 5 minute data for KSNC

Wind History from SNC (wind in knots)
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Last 24hrS7SW6S5S6S10S75S7S7S6S6S3CalmCalmCalmN3CalmN7N8N6N6N6
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1 day agoNE12NE12N9
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CalmS63S4SW64S4S3SW4S3S4S34S3S5S5
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Tide / Current Tables for Saybrook Jetty, Connecticut
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Saybrook Jetty
Click for Map
Mon -- 03:27 AM EDT     -0.28 feet Low Tide
Mon -- 05:55 AM EDT     Moonset
Mon -- 06:23 AM EDT     Sunrise
Mon -- 09:48 AM EDT     4.26 feet High Tide
Mon -- 03:50 PM EDT     -0.37 feet Low Tide
Mon -- 05:40 PM EDT     Moonrise
Mon -- 07:20 PM EDT     Sunset
Mon -- 10:13 PM EDT     4.48 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.41.40.5-0.2-0.20.51.62.63.54.14.33.82.81.80.8-0.1-0.40.11.12.33.34.14.54.3

Tide / Current Tables for The Race, Long Island Sound, New York Current
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The Race
Click for Map
Mon -- 01:30 AM EDT     -3.69 knots Max Ebb
Mon -- 04:41 AM EDT     0.00 knots Slack
Mon -- 05:54 AM EDT     Moonset
Mon -- 06:22 AM EDT     Sunrise
Mon -- 07:35 AM EDT     3.45 knots Max Flood
Mon -- 10:50 AM EDT     -0.00 knots Slack
Mon -- 01:54 PM EDT     -3.86 knots Max Ebb
Mon -- 05:04 PM EDT     0.00 knots Slack
Mon -- 05:39 PM EDT     Moonrise
Mon -- 07:19 PM EDT     Sunset
Mon -- 08:00 PM EDT     3.66 knots Max Flood
Mon -- 11:14 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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-2.6-3.6-3.6-2.7-1.20.52.23.33.42.71.4-0.3-2.1-3.4-3.9-3.3-1.9-0.11.73.13.73.22.10.5

Weather Map
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wmap_A
GEOS Local Image of    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 (9,2,3,4)
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Ground Weather Radar Station Upton, NY
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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.