Marine Weather and Tides
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
|Sunrise 5:14AM||Sunset 8:29PM||Monday June 18, 2018 5:16 PM EDT (21:16 UTC)||Moonrise 10:45AM||Moonset 12:00AM||Illumination 29%|
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|ANZ330 Long Island Sound East Of New Haven Ct/port Jefferson Ny- 418 Pm Edt Mon Jun 18 2018 |
Tonight..SW winds 15 to 20 kt, diminishing to 5 to 10 kt. Seas around 2 ft. Scattered showers and tstms this evening, then showers likely with isolated tstms after midnight. Vsby 1 to 3 nm this evening.
Tue..NW winds 5 to 10 kt. Seas 1 ft or less.
Tue night..N winds 5 to 10 kt. Seas 1 ft or less.
Wed..E winds 5 to 10 kt, becoming sw in the afternoon. Seas 1 ft or less.
Wed night..SW winds 5 to 10 kt, becoming E after midnight. Seas 1 ft or less. Chance of showers after midnight.
Thu..NE winds 5 to 10 kt. Seas 1 ft or less.
Thu night..NE winds 5 to 10 kt. Seas 1 ft or less.
Fri..NE winds around 5 kt, becoming se in the afternoon. Seas 1 ft or less.
Fri night..SW winds 5 to 10 kt. Seas 1 ft or less.
Sat..SW winds 5 to 10 kt. Seas 1 ft or less.
Sat night..SW winds 5 to 10 kt. Seas 1 ft or less. Chance of tstms in the evening. Chance of showers. Winds and seas higher in and near tstms.
|ANZ300 418 Pm Edt Mon Jun 18 2018 |
Synopsis for the long island waters and new york harbor.. A cold front moves across the waters overnight into early Tuesday. This will be followed by weak high pressure building in thereafter through Tuesday night. A cold front will then push through the area waters Wednesday. High pressure will build over the waters Thursday, then slide offshore through Saturday.
7 Day Forecast for Marine Location Near Portland, CTHourly EDIT Help
Area Discussion for - New York City/Upton, NY  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 kokx 182024|
area forecast discussion
national weather service new york ny
424 pm edt Mon jun 18 2018
A cold front will move across the region late tonight through
early Tuesday. Weak high pressure then builds in Tuesday into
Tuesday night. A cold front moves through the area Wednesday
and Wednesday night. High pressure then builds over the area
through Thursday night then slides offshore Friday night into
Saturday. A cold front may approach Sunday and move across the
area on Monday.
Near term until 6 am Tuesday morning
Pre-frontal trough ahead of cold front will be moving into the
region for this evening and will act as a focus for developing
showers and thunderstorms. However, there is vertical limits to
development with residual ridging aloft. The ridge eventually
becomes flattens and gives way to an approaching trough late
In terms of hazards, heat advisory remains for NE nj and the
lower hudson valley; this will end at 8pm.
Other hazard would just be associated with the thunderstorms
with the cold front moving across. Not expecting severe; SPC has
interior parts of the region in marginal risk (5%) for severe wind
Thinking here some thunderstorm activity could have strong wind
gusts of 30-40 kt possible but bulk shear values are limited
this far south with higher values near the base of the mid and
upper level trough.
Also thunderstorms will be capable of producing locally heavy rain.
Pwats near 2 inches will enable for thunderstorms to tap into a
moisture rich environment.
The higher chances for thunderstorms will be with the remaining low
level instability. The instability will be higher near nyc and
locations to the north and west. This instability really starts to
decrease more overnight. That time though is when the central low
and cold frontal boundary will be pushing through so enough forcing
will be there to keep for some thunderstorm activity for a part of
the overnight. Convective activity trends downward after the
cold front passage towards daybreak Tuesday
a high risk of rip currents remains at atlantic beaches into
Short term 6 am Tuesday morning through Tuesday night
Weak high pressure builds in from the great lakes Tuesday into
Tuesday night. The trough aloft moves into the canadian
maritimes Tuesday and into northern atlantic Tuesday night. The
ridging in the mid and upper levels stays anchored in the|
southeast us leaving the local region with westerly zonal flow.
Rain showers come to an end during the morning behind the cold
More stable and drier air moves in behind the front during the day
with deep N NW flow in the atmosphere.
This will provide downslope warming and while less humid with
dewpoints in the mid to upper 50s. This will be from daytime mixing
up to around or a little higher than 5 kft. The highs were taken
from the relatively warmer mav guidance ranging from mid 80s to near
90. However with aforementioned less humid conditions, apparent
temperatures will be right near actual temperatures.
For Tuesday, there will be moderate risk of rip currents at the
ocean beaches, and high risk for rip currents again for
southeast suffolk ocean beaches.
Long term Wednesday through Monday
Low pressure will track along a boundary Wednesday afternoon. This
could bring widespread showers and thunderstorms across the entire
area Wednesday afternoon through Wednesday evening. Some of the
thunderstorms are capable to produce torrential downpours along with
gusty winds. As the boundary moves offshore Wednesday night showers
will tapper off. Dry conditions expected on Thursday and into early
Saturday. Unsettled weather then likely later Saturday and into the
beginning of the work week with some rumbles of thunder mainly
Saturday afternoon through Sunday.
Temperatures during this time period will be near normal.
Aviation 20z Monday through Saturday
A cold front will approach this evening, and cross tonight. High
pressure builds in from the north tonight.
Sparse tsra threat for nyc nj terminals and n&w, with brief
MVFR ifr vsby and gusty winds, will likely be from the line of
scattered thunderstorms across N central pa as of 20z. Have
continued to mention via vcts, with low confidence on how well
this activity hold together into the city terminals. An
additional round of showers likely, with perhaps an embedded
thunderstorm, as the front passes through nyc metro towards
Otherwise, potential for a brief period of sct MVFR ifr stratus at
kisp or kgon this evening.
Gusty s-sw flow of 10-15 kt with gusts 20 kt into early evening,
except sea breezes at kjfk klga kbdr kisp with sustained winds 15-20
kt and gusts approaching 25 kt.
Ny metro enhanced aviation weather support...
detailed information, including hourly TAF wind component fcsts,
can be found at: http:
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|NWHC3 - 8465705 - New Haven, CT||24 mi||46 min||SW 8 G 9.9||74°F||65°F||1011.1 hPa|
|44039 - Central Long Island Sound||29 mi||31 min||SSW 16 G 18||73°F||2 ft|
|NLNC3 - 8461490 - New London, CT||32 mi||46 min||SW 9.9 G 17||78°F||66°F||1010.9 hPa|
|LDLC3 - New London Ledge CT - Ledge Light Weather||34 mi||36 min||SW 16 G 18||68°F||1011.4 hPa||61°F|
|BRHC3 - 8467150 - Bridgeport, CT||40 mi||52 min||SSW 8.9 G 17||77°F||62°F||1010.2 hPa|
Wind History for New Haven, CT(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Meriden, Meriden Markham Municipal Airport, CT||11 mi||23 min||S 14 G 22||10.00 mi||Fair||84°F||66°F||57%||1009.5 hPa|
|Hartford, Hartford-Brainard Airport, CT||12 mi||23 min||S 14 G 25||10.00 mi||Fair||86°F||69°F||57%||1008.6 hPa|
|Chester, Chester Airport, CT||14 mi||21 min||SSW 11||10.00 mi||Fair||81°F||66°F||62%||1011.2 hPa|
|New Haven, Tweed-New Haven Airport, CT||23 mi||23 min||Var 5||10.00 mi||Fair||78°F||66°F||67%||1010.7 hPa|
Wind History from MMK (wind in knots)
|1 day ago||NW||W||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||NW||W||N||N||NW||N||W||S||S||S|
|2 days ago||NW||N||N||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||N||NW||N||NW||N||W||N||NW |
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
Click for Map
Mon -- 12:01 AM EDT 0.20 feet Low Tide
Mon -- 05:16 AM EDT Sunrise
Mon -- 05:19 AM EDT 2.86 feet High Tide
Mon -- 10:44 AM EDT Moonrise
Mon -- 12:42 PM EDT -0.09 feet Low Tide
Mon -- 06:05 PM EDT 2.47 feet High Tide
Mon -- 08:27 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Higganum Creek |
Click for MapNote: Tidal information only applies during low river stages.
Mon -- 04:37 AM EDT 3.03 feet High Tide
Mon -- 05:15 AM EDT Sunrise
Mon -- 10:44 AM EDT Moonrise
Mon -- 11:58 AM EDT -0.19 feet Low Tide
Mon -- 05:16 PM EDT 2.68 feet High Tide
Mon -- 08:26 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  HelpWeather Map
GOES 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.
target = "new">Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for New York City/Upton, NY (17,4,5,8)(on/off)  Help
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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 numerious 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.