Monday, March30, 2020
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Marine Weather and Tides
New London, 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 6:32AMSunset 7:13PM Monday March 30, 2020 12:47 AM EDT (04:47 UTC) Moonrise 10:05AMMoonset 12:23AM Illumination 35% Phase: Waxing Crescent; Moon at 6 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- 1015 Pm Edt Sun Mar 29 2020
Overnight..N winds 5 to 10 kt. Waves 2 to 3 ft late this evening, then 1 ft or less. Chance of light rain or drizzle or isolated tstms late this evening, then slight chance of light rain or drizzle. Patchy fog. Vsby 1 to 3 nm.
Mon..NW winds around 5 kt, becoming W in the afternoon. Waves 1 ft or less. Patchy fog in the morning. Chance of showers in the afternoon. Vsby 1 to 3 nm in the morning.
Mon night..N winds 5 to 10 kt, becoming ne 10 to 15 kt with gusts up to 20 kt after midnight. Waves 1 ft or less, then 1 to 2 ft after midnight. Chance of showers in the evening.
Tue..NE winds 10 to 15 kt with gusts up to 20 kt. Waves 1 to 2 ft.
Tue night..NE winds 10 to 15 kt. Waves 1 to 2 ft.
Wed..NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Waves 1 to 2 ft in the morning, then 1 ft or less.
Wed night..NE winds 5 to 10 kt, becoming N 10 to 15 kt after midnight. Waves 1 ft or less in the evening, then 1 to 2 ft.
Thu..NW winds 10 to 15 kt. Waves 1 to 2 ft.
Thu night..N winds 10 to 15 kt. Waves 1 to 2 ft.
Fri..N winds 10 to 15 kt. Waves waves 1 to 2 ft.
Fri night..N winds around 10 kt. Waves 1 ft or less. Winds and waves higher in and near tstms.
ANZ300 1015 Pm Edt Sun Mar 29 2020
Synopsis for the long island waters and new york harbor.. Weak low pressure moves south and east of long island tonight, then strengthens east of new england Monday into Monday night. Meanwhile another low well to the northwest will weaken into a trough as it approaches on Monday, then merge with the offshore low Monday night into Tuesday. Yet another low will pass well south and east during mid week, followed by high pressure for late week. A cold front will approach next weekend.


7 Day Forecast for Marine Location Near New London, CT
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location: 41.26, -72.11     debug


Area Discussion for - New York City/Upton, NY
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FXUS61 KOKX 300310 AFDOKX

Area Forecast Discussion National Weather Service New York NY 1110 PM EDT Sun Mar 29 2020

SYNOPSIS. Weak low pressure passes south and east of Long Island through tonight. The low strengthens east of New England Monday into Monday night. Meanwhile another low well to the northwest will weaken into a trough as it approaches on Monday, then merge with the offshore low Monday night into Tuesday. Yet another low will pass well south and east during mid week, followed by high pressure for late week. A cold front will approach next weekend.

NEAR TERM /UNTIL 6 AM MONDAY MORNING/. A vort max rounding the base of an upper low over the Great Lakes passes to our NW overnight. This has generated some convection mainly to the north and east of the region. A trough axis in the middle levels around 850 mb is also crossing the region. The axis of convection will quickly move east of Long Island in the next few hours.

A weak surface low also passes south and east of Long Island along a stationary front. The main cold front is located across western PA and western upstate NY closer to the parent low over the Great Lakes. The front likely stays to the west overnight with the region remaining under low clouds and patchy fog. The latest forecast sounding data shows some drier air works its way south under a light northerly flow. This should help prevent any of the fog from becoming dense.

Lows tonight will be in the 40s.

SHORT TERM /6 AM MONDAY MORNING THROUGH MONDAY NIGHT/. Stacked low to our northwest weakens as it heads towards us. Limited instability will be present in the associated cold pool aloft. This will maintain clouds and trigger sct to numerous mainly afternoon showers. especially inland. With partial clearing and deeper mixing in the afternoon, temps should reach the lower 60s in NE NJ, and 50s elsewhere.

Chances for showers continue Mon night, then begin to shift westward late as associated low level convergence/lift also shifts west due to strengthening of the offshore low. Some wet snowflakes could mix in with any showers inland as temps there fall to the mid 30s, with upper 30s/lower 40s for the coast and metro area.

LONG TERM /TUESDAY THROUGH SUNDAY/. Light showers (or rain/snow showers across the interior) are possible Tuesday morning as a surface trough associated with the surface low over the western Great Lakes region continues to weaken. These showers will continue to push southwest, and mainly dry conditions return to the region by Tuesday afternoon.

A coastal storm will eject off the southeast U.S. coast and track well south and east of the region Tuesday night through Thursday. Dry conditions are therefore expected through then.

As the storm intensifies and expands well east of the region Thursday night, the western edge of the precipitation field will move westward toward our area. Some vorticity maxima may move through aloft, as well as spokes of surface troughs rotating around the low which will aid in the possibility for showers, but right now, looks to only be a slight chance for extreme eastern areas late Thursday night into Friday.

Thereafter, a cold front approaches for the weekend, but as of right now, due to uncertainty and light precipitation, only looks to be slight chance from Saturday afternoon through Sunday.

High temperatures will be slightly below normal Tuesday and Wednesday, then slight above normal through the rest of the long term.

AVIATION /03Z MONDAY THROUGH FRIDAY/. Weak low pressure passes south and east of Long Island through tonight. The low gradually strengthens off the New England coast on Monday as another low approaches from the NW.

IFR to LIFR conditions are likely to continue through 06z at most TAF sites. Gradual improvements are expected early Monday morning with MVFR becoming VFR through the day. Timing of improving conditions may be off by 1-2 hours. VFR prevails into Monday afternoon, but showers are possible which could bring conditions back to MVFR at times.

N-NE winds around 10-15 kt should weaken overnight with many locations becoming light and/or variable into Monday morning. The wind direction forecast for Monday afternoon and evening is of low confidence. The current forecast has winds becoming more W and then NW late around 10 kt.

OUTLOOK FOR 00Z TUESDAY THROUGH FRIDAY. Monday Night. MVFR likely with IFR possible. Chance of showers. Tuesday. Chance of MVFR in showers. Wednesday-Friday. VFR. NW G15-20kt Thursday and Friday.

MARINE. Visibilities have improved on the waters and do not anticipate dense fog redeveloping overnight. Winds and seas have also subsided on Long Island Sound. As the pressure gradient continues relaxing tonight, seas will diminish, though the ocean waters will remain above 5 ft into Monday night.

Some gusts up to 25 kt are possible late Mon night into Tue morning E of Moriches Inlet as low pressure off to the east strengthens somewhat. Thereafter, hazardous ocean seas there should linger through the day on Tue, possibly into Wed morning.

HYDROLOGY. No hydrologic impacts expected.

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 . Small Craft Advisory until midnight EDT Monday night for ANZ355. Small Craft Advisory until 6 AM EDT Tuesday for ANZ350-353.

SYNOPSIS . Goodman/JP NEAR TERM . DS SHORT TERM . Goodman LONG TERM . JP AVIATION . DS MARINE . Goodman/JP/DS HYDROLOGY . Goodman/JP EQUIPMENT .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NLNC3 - 8461490 - New London, CT 7 mi48 min NNE 5.1 G 8.9 42°F 44°F1011.5 hPa (-0.0)
MTKN6 - 8510560 - Montauk, NY 17 mi48 min 43°F 44°F1010.3 hPa (-0.7)
NWHC3 - 8465705 - New Haven, CT 42 mi48 min NE 4.1 G 13 43°F 44°F1011.6 hPa (+0.3)
QPTR1 - 8454049 - Quonset Point, RI 44 mi48 min N 20 G 23 42°F 45°F1012.7 hPa (-0.7)
NWPR1 - 8452660 - Newport, RI 45 mi48 min N 15 G 19 42°F 39°F1012.3 hPa (-0.7)
NAXR1 - Narragansett Bay Reserve, RI 48 mi63 min NE 19 42°F 1012 hPa42°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 48 mi48 min NE 15 G 19 42°F 1013.1 hPa (-1.1)
PRUR1 49 mi48 min 43°F 42°F

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
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NE4
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Groton / New London, Groton / New London Airport, CT6 mi52 minN 1210.00 miOvercast41°F41°F100%1011.5 hPa
Montauk, Montauk Airport, NY16 mi54 minNNE 13 G 17 mi44°F42°F93%1010.7 hPa
Westerly, Westerly State Airport, RI18 mi55 minN 810.00 miOvercast45°F39°F83%1012.2 hPa
Chester, Chester Airport, CT23 mi53 minNNE 125.00 miFog/Mist41°F41°F100%1011.8 hPa

Link to 5 minute data for KGON

Wind History from GON (wind in knots)
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Last 24hrNE11E11
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E14NE13NE13NE10N15
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1 day agoN6N5N4N5N6N4NE3NE6NE8E8E7E10E8E10E10E8E8E7E7E10E9E11
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2 days agoSW7SW6SW6W7W7W8SW8W7W9W8N11NW12N12NW12
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N13NW11NW8NW8NW7N6N3N4N7

Tide / Current Tables for Little Gull Island, Long Island, 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 The Race, Long Island Sound, New York Current
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The Race
Click for Map
Mon -- 12:23 AM EDT     Moonset
Mon -- 12:45 AM EDT     2.29 knots Max Flood
Mon -- 03:48 AM EDT     -0.00 knots Slack
Mon -- 06:33 AM EDT     Sunrise
Mon -- 07:14 AM EDT     -2.60 knots Max Ebb
Mon -- 10:04 AM EDT     Moonrise
Mon -- 10:27 AM EDT     0.00 knots Slack
Mon -- 01:19 PM EDT     2.06 knots Max Flood
Mon -- 04:26 PM EDT     -0.00 knots Slack
Mon -- 07:11 PM EDT     Sunset
Mon -- 07:38 PM EDT     -2.10 knots Max Ebb
Mon -- 10:31 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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2.12.31.70.8-0.2-1.2-2.1-2.6-2.4-1.6-0.50.61.521.91.20.4-0.5-1.4-2-2.1-1.5-0.50.5

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 (0,6,7,8)
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Ground Weather Radar Station Upton, NY
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weather_mapweather_map weather_map

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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.