Friday, May29, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Colchester, 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 5:16AMSunset 8:15PM Friday May 29, 2020 9:22 PM EDT (01:22 UTC) Moonrise 11:49AMMoonset 1:23AM Illumination 54% Phase: First Quarter Moon; Moon at 8 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
    EDIT      (on/off)   Help
ANZ330 Long Island Sound East Of New Haven Ct/port Jefferson Ny- 827 Pm Edt Fri May 29 2020
.dense fog advisory in effect until 8 am edt Saturday...
Tonight..SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Widespread fog. Chance of showers early this evening. Slight chance of showers late this evening, then chance of showers after midnight. Vsby less than 1 nm.
Sat..SW winds 5 to 10 kt. Seas 1 ft or less. Chance of showers in the morning. Patchy dense fog in the morning. Vsby less than 1 nm in dense fog, otherwise 1 to 3 nm in the morning.
Sat night..W winds 5 to 10 kt, becoming nw after midnight. Seas 1 ft or less, then around 2 ft after midnight.
Sun..NW winds 10 to 15 kt. Seas 1 ft or less.
Sun night..NW winds around 10 kt. Seas around 2 ft.
Mon..NW winds 5 to 10 kt. Seas 1 ft or less.
Mon night..NW winds 5 to 10 kt. Seas 1 ft or less.
Tue..NW winds 5 to 10 kt, becoming sw in the afternoon. Seas 1 ft or less.
Tue night..SW winds around 10 kt. Seas 1 ft or less. Chance of showers.
Wed..SW winds 5 to 10 kt. Seas 1 ft or less. Chance of showers.
Wed night..W winds 5 to 10 kt. Seas 1 ft or less. Chance of showers.
ANZ300 827 Pm Edt Fri May 29 2020
Synopsis for the long island waters and new york harbor.. A slow moving cold front approaches tonight and moves through on Saturday morning. High pressure builds in Saturday night through early next week. Another frontal system affects the waters for mid week.


7 Day Forecast for Marine Location Near Colchester, CT
   Hourly   EDIT   Help
location: 41.51, -72.33     debug


Area Discussion for - New York City/Upton, NY
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KOKX 292019 AFDOKX

Area Forecast Discussion National Weather Service New York NY 419 PM EDT Fri May 29 2020

SYNOPSIS. A cold front will through late tonight into Saturday morning. High pressure then builds to the south of the area Sunday through early next week. Another frontal system affects the region for mid week, with a potential return to high pressure for late week.

NEAR TERM /UNTIL 6 AM SATURDAY MORNING/. Surface high pressure will continue to be anchored offshore tonight while a slow moving cold front approaches. Fog and low clouds will once again move inland as the sun sets and the atmosphere cools somewhat. It could become dense in spots, so will have to monitor for the potential for a Dense Fog Advisory, but more likely a Special Weather Statement would be issued for this. Best places to see dense fog would be coastal areas, such as Long Island (Twin Forks highest chances) and southeastern coastal Connecticut.

Ahead of the cold front is a pre-frontal trough that will slowly approach. North and west of New York City, there's enough clearing to allow for surface heating. This heating will aid in the development of showers and thunderstorms. The pre-frontal trough will aid in lift, while the surface instability will increase to over 1000 J/kg (if the NAM is to be believed, over 3000 J/kg), while there is ample moisture with dew points in the 60s and 70s across the area. This could lead to strong to potentially severe storms for portions of the interior, and thus a Severe Thunderstorm Watch was issued for Orange County. Outside of this area, gusty winds of 40 to 50 mph are possible in any strong thunderstorms, though an isolated severe thunderstorms cannot be ruled out. Chances for seeing a strong to severe storms, and thunderstorms in general, decrease as you head east from New York City, with the lowest chances for the Twin Forks and southeastern Connecticut. Lower temperatures will be less instability, so it's expected thunderstorms will weaken as showers and thunderstorms head east. Because of this, precipitation amounts will be less in these areas as well, averaging less than a tenth of an inch. In general, any area that sees a thunderstorm could see locally heavy rain; up to half an inch. Flooding is not expected, except perhaps minor nuisance flooding associated with thunderstorms.

Thunderstorms will weaken to plain showers after midnight as the instability diminishes. Chances for showers diminish as the cold front moves through. Winds will shift to the west late tonight for western areas, allowing any clouds and fog to improve there first.

SHORT TERM /6 AM SATURDAY MORNING THROUGH SATURDAY NIGHT/. After some lingering early morning showers, the cold front moves through the entire area, with mainly dry conditions by mid morning to late morning continuing into Saturday night. Clouds and fog improve across the remaining parts of the forecast area as the cold front pushes offshore and high pressure begins to build in. Temperatures will continue to be above normal with highs in the upper 70s to lower 80s, cooler near the coast. With dew points forecast to drop throughout the day, humidity levels will become more tolerable.

Temperatures drop to more seasonable levels Saturday night, but will still be a few degrees above normal, in the 50s region- wide.

LONG TERM /SUNDAY THROUGH FRIDAY/. Stubborn North Atlantic/Eastern Canadian omega blocking will be the theme through the week, with strong North Atlantic ridging and a persistent upper low over Eastern Canada. This will spell a mean troughing pattern for the NE US through the period.

The period will start with northern stream troughing deepening into the NE US on Sunday, with this axis gradually shifting east on Monday. At the surface, Canadian high pressure builds towards the region on Sunday, with gusty northwest flow ushering in an unseasonably cool airmass. Sct aft cu development possible, with temps running a few degrees below seasonable (upper 60s/lower 70s). Chilly night Sunday Night as cool airmass settles over the region, with potential for outlying areas to drop into the 40s with radiational cooling potential.

Trough axis crossing through on Monday will likely lead to considerable afternoon cloud cover and scattered instability showers. Convection looks to be quite low top, but cant rule out an isolated rumble of thunder with small hail potential with any pockets of better heating. Otherwise another below seasonable day on Monday(mid to upper 60s), with temps likely dropping towards 60 with any rain showers.

Forecast spread increases heading into mid to late week as upper flow flattens, but some differences exists in handing of a closed low entering California on Saturday, and how its translate through the upper flow and eventually interacts with the persistent Eastern Canadian low. General agreement on this energy and associated low pressure tracking across the Southern Canadian plains early week, and then work into Southern Ontario and then New England for mid week. Subtle differences exist in timing amplitude of shortwave energy and therefore track/timing during this associated frontal system, but in general this will bring the next potential for shower activity late Tue into Wed night.

Forecast spread continues on how quickly Canadian troughing lifts out for late week, which results in a lower confidence sensible weather forecast. General model agreement in rising heights and ridging building towards the area for the weekend with building warmth, but will have to see if this is too fast based on blocky pattern.

AVIATION /20Z FRIDAY THROUGH WEDNESDAY/. A cold front gradually approaches the terminals tonight and then moves offshore through Saturday.

Improving flight categories continue at most terminals this afternoon. KISP could see improvement to MVFR or possibly VFR briefly late this afternoon. GON will stay LIFR through tonight. Conditions will deteriorate at JFK and ISP after 22z as low clouds and possible fog return. VFR could hang on elsewhere outside of any showers tonight. MVFR to LIFR should return at most locations overnight.

Showers are possible around NYC terminals through 21z. A higher chance of showers exists this evening as a band of showers and thunderstorms moves in from the west. This activity may make it near the NYC terminals after 00z, but thunderstorms likely weaken so have left thunder out of the TAF except at SWF. Showers are also possible east of NYC terminals overnight.

S-SSW flow around 10 to 15 kt this afternoon with occasional gusts up to 20 kt. SSW winds 5-10 kt tonight will become SW and then W towards early Saturday morning. WNW winds around 10 kt are expected on Saturday.

Any lingering fog and low clouds early Saturday improve to VFR after 12z as winds become more westerly.

OUTLOOK FOR 18Z SATURDAY THROUGH WEDNESDAY. Saturday Afternoon-Tuesday Afternoon. VFR. Tuesday Night-Wednesday. MVFR possible. Chance of showers and slight chance of thunderstorms.

MARINE. Dense fog advisory continues across the central and eastern ocean zones as well as the South Shore Bays until 5 pm. There is the potential theses conditions will continue overnight, and may expand north and west. The best areas to see dense fog tonight are the eastern ocean zone, Peconic and Gardiner's Bay, and the eastern sound. These conditions will improve once an approaching cold front moves through the coastal waters, which will be very late tonight into early Saturday morning.

Small Craft Advisories continue on the ocean waters through Saturday as the southerly flow continues. Waves begin to diminish Saturday from west to east. There is a possibility that the western ocean zone drops below 5 ft before the end of the day.

Otherwise, showers will move through the waters tonight, with a passing thunderstorm possible. Any thunderstorm may be associated with gusty winds of 35 to 45 kt. These are most likely across the harbor, western ocean zone, and wester sound.

Sub-SCA offshore flow expected Sunday into Monday as high pressure build southwest and south of the waters, with ocean seas falling below SCA on Sunday.

Winds and seas then remain below SCA levels through Wednesday, but a developing S/SW fetch ahead of an approaching frontal system Tuesday Night through Wed, may result in marginal SCA seas by Wed.

HYDROLOGY. Brief heavy downpours tonight can be expected, but widespread hydrological impacts are not anticipated.

No hydrologic impacts expected thereafter through Friday.

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 . High Rip Current Risk until 9 PM EDT this evening for NYZ075- 080-081-178-179. NJ . None. MARINE . Dense Fog Advisory until 5 PM EDT this afternoon for ANZ345- 350-353-355. Small Craft Advisory until 6 PM EDT Saturday for ANZ350-353- 355.

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


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NLNC3 - 8461490 - New London, CT 16 mi52 min SSW 7 G 11 66°F 56°F1013.8 hPa
LDLC3 - New London Ledge CT - Ledge Light Weather 19 mi87 min Calm G 1 62°F 1013.4 hPa61°F
NWHC3 - 8465705 - New Haven, CT 34 mi52 min S 5.1 G 7 66°F 60°F1012.6 hPa
MTKN6 - 8510560 - Montauk, NY 37 mi52 min 61°F 56°F1014.8 hPa
QPTR1 - 8454049 - Quonset Point, RI 49 mi52 min SSW 17 G 20 65°F 60°F1014.8 hPa

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
Last
24hr
S8
S7
S6
S10
G14
S7
G11
S10
SW8
G14
SW7
G13
SW3
S5
G8
S5
S6
S5
G8
S7
S5
S7
S8
G11
S10
G15
S9
G13
S7
S9
S10
G13
SW5
G9
SW9
G13
1 day
ago
S3
G6
SE4
S6
S3
--
S4
S2
S5
SE1
SE3
S3
S5
S4
S4
S6
S7
G10
S8
S8
S7
S6
S5
S8
S6
S7
G10
2 days
ago
SW4
S6
S3
NW2
W2
G5
S4
SW4
SW3
SW3
SW3
--
S2
S8
S9
S8
S7
S11
S7
S11
S9
S10
S10
S7
S6

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chester, Chester Airport, CT13 mi87 minSSW 124.00 miFog/Mist66°F66°F100%1013.9 hPa
Willimantic, Windham Airport, CT18 mi30 minS 1010.00 miOvercast68°F66°F93%1013.3 hPa
Groton / New London, Groton / New London Airport, CT19 mi86 minSW 40.75 miFog/Mist63°F63°F100%1014.2 hPa
Hartford, Hartford-Brainard Airport, CT23 mi29 minS 7 G 1610.00 miOvercast71°F66°F84%1012.5 hPa

Link to 5 minute data for KSNC

Wind History from SNC (wind in knots)
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
Last 24hrS9S7
G14
S8S6S8S7
G13
6SW7
G13
SW7SW5S4S55
G11
S553
G11
S8S8S8S10S11--S7
G13
S8
G14
1 day agoS4CalmCalmS4CalmSW3CalmCalmCalm--Calm445S4S7S8S7
G14
S8S115S6S7S8
2 days agoS5S55S5--CalmS3Calm4CalmCalmCalmCalm64S7S85
G13
S11S10SW8
G13
S9
G14
S8S6

Tide / Current Tables for Hadlyme, Connecticut
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Hadlyme
Click for Map
Fri -- 01:22 AM EDT     Moonset
Fri -- 05:08 AM EDT     3.04 feet High Tide
Fri -- 05:19 AM EDT     Sunrise
Fri -- 11:49 AM EDT     Moonrise
Fri -- 12:16 PM EDT     0.33 feet Low Tide
Fri -- 06:03 PM EDT     2.74 feet High Tide
Fri -- 08:15 PM EDT     Sunset
Fri -- 11:30 PM EDT     First Quarter
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
0.81.21.82.52.932.92.521.510.60.30.511.62.22.62.72.62.21.81.41.1

Tide / Current Tables for The Race, Long Island Sound, New York Current
   EDIT      (on/off)   Help   One Week of Data
The Race
Click for Map
Fri -- 01:20 AM EDT     Moonset
Fri -- 01:49 AM EDT     2.40 knots Max Flood
Fri -- 04:57 AM EDT     -0.00 knots Slack
Fri -- 05:18 AM EDT     Sunrise
Fri -- 08:17 AM EDT     -2.88 knots Max Ebb
Fri -- 11:30 AM EDT     0.00 knots Slack
Fri -- 11:48 AM EDT     Moonrise
Fri -- 02:25 PM EDT     2.56 knots Max Flood
Fri -- 05:46 PM EDT     -0.00 knots Slack
Fri -- 08:13 PM EDT     Sunset
Fri -- 08:51 PM EDT     -2.65 knots Max Ebb
Fri -- 11:30 PM EDT     First Quarter
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
1.32.12.41.91-0-1.2-2.3-2.9-2.7-1.8-0.60.61.82.52.41.80.9-0.3-1.5-2.4-2.6-2.2-1.2

Weather Map
       (on/off)   Help Weather Map
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 (21,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Boston, MA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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.