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 5:16AM||Sunset 8:29PM||Thursday June 21, 2018 1:05 AM EDT (05:05 UTC)||Moonrise 2:07PM||Moonset 1:37AM||Illumination 53%|
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|ANZ330 Long Island Sound East Of New Haven Ct/port Jefferson Ny- 941 Pm Edt Wed Jun 20 2018 |
Overnight..S winds 5 to 10 kt, becoming se late. Seas 1 ft or less. Chance of rain late this evening, then rain likely. Rain late with vsby 1 to 3 nm.
Thu..E winds 5 to 10 kt. Seas 1 ft or less. Chance of rain in the morning with vsby 1 to 3 nm.
Thu night..E winds 5 to 10 kt. Seas 1 ft or less.
Fri..E winds around 10 kt. Seas 1 ft or less, then around 2 ft in the afternoon.
Fri night..E winds around 10 kt. Seas around 2 ft. Chance of showers after midnight.
Sat..E winds around 10 kt. Seas around 2 ft. Chance of showers in the morning, then showers likely in the afternoon.
Sat night..SE winds around 10 kt, becoming sw after midnight. Seas around 2 ft. Chance of tstms. Showers likely, mainly in the evening.
Sun..SW winds 5 to 10 kt. Seas around 2 ft.
Sun night..W winds 5 to 10 kt. Seas 1 ft or less. Chance of showers and tstms.
Mon..NW winds 5 to 10 kt. Seas 1 ft or less. Chance of showers.
Mon night..N winds 5 to 10 kt. Seas 1 ft or less. Winds and seas higher in and near tstms.
|ANZ300 941 Pm Edt Wed Jun 20 2018 |
Synopsis for the long island waters and new york harbor.. Low pressure riding along a stalled frontal boundary will track just south of the region overnight. This low exits to the east Thursday morning with weak high pressure building over the region. High pressure retreats to the north and east on Friday as the next frontal system approaches. This frontal system will move across the region this weekend. High pressure returns for next week.
7 Day Forecast for Marine Location Near Branford Center CDP, CTHourly EDIT Help
Area Discussion for - New York City/Upton, NY  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 kokx 210237|
area forecast discussion
national weather service new york ny
1037 pm edt Wed jun 20 2018
Low pressure riding along a stalled frontal boundary tracks
just south of the region tonight. This low exits to the east
Thursday morning with weak high pressure building over the
region. High pressure retreats to the north and east on Friday
as the next frontal system approaches. This frontal system will
move across the region this weekend. High pressure returns for
Near term until 6 am Thursday morning
A weak upper level shortwave will move across the region
tonight, with low pressure tracking just south of the
region overnight. Light rain shower activity will continue to
increase across the region overnight, but focus for steadier and
heavier rain looks like it will me relegated to nyc nj metro li
and points south. LLJ forcing, higher pwats (around 2"), and
weak instability will be close enough to nyc nj metro and li
after midnight to present a quick period of moderate to heavy
rain. Meanwhile, generally light to moderate frontogenetic
rain across lower hud and southern ct.
Forecast has continued to be trended in this drier southward
direction for lower hud and southern ct with this update.
Refer to the hydrology section of the afd for details on
expected rainfall amounts and any impacts.
Lows tonight fall into the 60s.
Short term 6 am Thursday morning through Thursday night
Any precipitation comes to an end Thursday morning, with high
pressure building in from the west. Drier conditions can then
be expected for the remainder of the day. Slowly clearing skies
will lead to partly to mostly sunny day. Daytime highs climb
into the 70s and 80s.
Fair conditions continue Thursday night as high pressure
continues to build into the region. Overnight lows will fall
into the 50s and 60s. A mav met ecs blend was in good agreement
and used for temperatures in the short term.
Long term Friday through Wednesday
The main forecast challenge in the long term revolves around a
frontal system progged to impact the local area this weekend.
The frontal system will be in association with an upper low
than opens up as it lifts into the great lakes region. Ensemble
means and deterministic runs overall agree on the synoptic
evolution this weekend, but there are differences in timing and
amplitude of shortwaves within the upper low trough.
Upper ridging will be in place on Friday and the best forcing
will be located well to the south and west. The upper ridge axis
generally remains in place Friday night as the shortwave
approaches. At the surface, a warm front will approach from the
south enhancing low level warm advection. One of the biggest
uncertainties heading into Saturday revolves around how much
surface ridging lingers from the high pressure to the northeast.
The low level easterly flow may serve to enhance the surface
ridging, keeping subsidence and stable conditions across the
region. This may slow the progress of the warm front a bit as
well. At the same time, the upper low and trough are progged to
open up and broaden as the system lifts towards the great lakes.
The main upper trough axis swings through Saturday evening and
Saturday night leaving behind a westerly flow on Sunday. Another
upper trough should cross the region Sunday night into Monday,
finally taking the frontal system offshore.
For sensible weather, dry conditions are forecast on Friday
with gradually increasing pops on Friday night into Saturday
morning. The ECMWF appears quickest to break the surface ridging
with the warm front moving across much quicker than the gfs.
Have gone with a slower progression with likely pops spreading
across the area late Saturday morning into the afternoon. It
appears at this time the best forcing will be with the upper
shortwave axis and passage of the warm front Saturday evening
into Saturday night. Little to no instability is present on
model soundings during the day Saturday, so have removed mention
of thunder until Saturday evening and night. Conditions should
dry out Sunday with the region fully in the warm sector.
Westerly flow aloft and a much drier middle and upper
atmosphere prevents anything more than a chance for showers and
thunderstorms with a cold front nearby. The chance for showers
and thunderstorms continues into at least Monday morning with
the upper trough axis passing across. If the timing of the upper
trough is slower, pops may need to be increased on Monday.
While the weekend does not look like a washout, there will be
periods of showers and possible storms Saturday night into|
Sunday. Locally heavy rainfall is possible in any convection.
High pressure returns behind the upper trough and frontal
system moving offshore on Monday. The high will be in control
through the middle of the week.
Temperatures average below normal Friday and Saturday and then
above normal on Sunday. Temperatures should then average near
normal for next week.
Aviation 03z Thursday through Monday
A wave of low pressure approaches from western pennsylvania,
passing near or just south of the terminals overnight into
Thursday morning. A backdoor cold front moves into the
terminals toward 00z Friday.
Vfr, with conditions lowering to MVFR as light rain develops
overnight. Conditions likely remain MVFR, especially across the
terminals north of nyc. There is a chance of ifr conditions
overnight with moderate to heavy rain, at the nyc terminals and
along the coast. Rain tapers off from west to east 09z to 12z,
then rain ends with improvement toVFR.
There is uncertainty as to the timing and areal extent of MVFR
and ifr overnight, along with the areas of heavy rain, and will
be dependent on the timing and track of the low.
Winds light from the south, 5 kt or less, become light and
variable to near calm overnight. Then as the low passes to the
south and east the winds will become N to NE 10-15 kt. There is
a chance winds become E for a few hours late Thursday
Outlook for 00z Friday through Monday
Thursday night and Friday Vfr.
Saturday Sub-vfr. Showers likely, possibly a thunderstorm
during the evening and nighttime hours.
Sunday Chance of sub-vfr conditions in showers and
Monday Chance of showers early, becomingVFR.
Sub-sca conditions are expected on the area waters as a relaxed
pressure gradient remains over the area waters.
Winds will remain 10 kt or less through Thursday night. The
possible exception is over the coastal ocean waters west of
moriches inlet, where sustained winds up to around 15 kt are
Winds and seas will stay below SCA levels on Friday. A frontal
system impacting the waters this weekend may bring winds to around
20 kt on the ocean with seas gradually building as well. Seas may
build to 5 ft on the ocean on Sunday as a warm front moves north and
sw flow increases further.
A generally 1 2 to 1 inch of basin average rainfall can be
expected tonight into Thursday morning across LI and nyc nj
metro, with 1 4 inch or less across interior portions of the lower
hudson valley and southern ct.
With high precipitable waters, there is the potential for
locally heavy rainfall across nyc nj metro and li. Locally
heavy rainfall could cause minor urban and poor drainage
flooding. There is a very small chance (10% or less) of
localized flash flooding, across nyc nj metro long island.
Locally heavy rainfall is possible this weekend, especially late
Saturday into Saturday night. However, no significant widespread
hydrologic impacts are currently expected.
Nyc NOAA weather radio station kwo-35 (162.55 mhz) remains off
the air for an extended period of time.
Okx watches warnings advisories
Synopsis... Bc ds
near term... Bc nv
short term... Bc
long term... Ds
marine... Bc ds
hydrology... Bc ds
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||6 mi||65 min||SSW 1.9 G 1.9||69°F||68°F||1009 hPa (+0.0)|
|44039 - Central Long Island Sound||11 mi||80 min||SSE 3.9 G 3.9||68°F|
|BRHC3 - 8467150 - Bridgeport, CT||22 mi||65 min||S 1.9 G 2.9||69°F||62°F||1008.2 hPa (+0.0)|
|NLNC3 - 8461490 - New London, CT||38 mi||65 min||S 6 G 6||69°F||65°F||1008.6 hPa (+0.0)|
|44069||42 mi||65 min||S 5.8 G 7.8||70°F||76°F||70°F|
|MTKN6 - 8510560 - Montauk, NY||46 mi||65 min||67°F||65°F||1009.1 hPa (+0.0)|
|44040 - Western Long Island Sound||47 mi||65 min||E 3.9 G 3.9||69°F||66°F|
Wind History for New Haven, CT(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|New Haven, Tweed-New Haven Airport, CT||5 mi||72 min||N 0||10.00 mi||Overcast||70°F||64°F||82%||1008.8 hPa|
|Chester, Chester Airport, CT||17 mi||70 min||Var 4||10.00 mi||Overcast||68°F||64°F||88%||1009.1 hPa|
|Meriden, Meriden Markham Municipal Airport, CT||17 mi||72 min||N 0||10.00 mi||Overcast||69°F||60°F||73%||1008.5 hPa|
|Bridgeport, Sikorsky Memorial Airport, CT||19 mi||73 min||N 0||10.00 mi||Overcast||70°F||64°F||84%||1008.5 hPa|
|Oxford, Waterbury-Oxford Airport, CT||24 mi||74 min||N 0||10.00 mi||Overcast||68°F||60°F||76%||1010.4 hPa|
Wind History from HVN (wind in knots)
|1 day ago||SW||S||SW||Calm||W||N||NW||N|
|2 days ago||S||S||Calm||Calm||Calm||SW||SW||SW||SW||SW||S||SW||S|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Branford Harbor |
Click for Map
Thu -- 12:09 AM EDT 0.29 feet Low Tide
Thu -- 01:37 AM EDT Moonset
Thu -- 05:18 AM EDT Sunrise
Thu -- 06:25 AM EDT 5.94 feet High Tide
Thu -- 12:32 PM EDT 0.25 feet Low Tide
Thu -- 02:07 PM EDT Moonrise
Thu -- 06:57 PM EDT 6.41 feet High Tide
Thu -- 08:27 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|New Haven Harbor |
Click for Map
Thu -- 12:20 AM EDT 0.40 feet Low Tide
Thu -- 01:37 AM EDT Moonset
Thu -- 05:18 AM EDT Sunrise
Thu -- 06:27 AM EDT 6.32 feet High Tide
Thu -- 12:42 PM EDT 0.23 feet Low Tide
Thu -- 02:07 PM EDT Moonrise
Thu -- 07:00 PM EDT 6.86 feet High Tide
Thu -- 08:28 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.
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Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for New York City/Upton, NY (1,6,7,8)(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.