Marine Weather and Tides
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
|Sunrise 5:21AM||Sunset 8:30PM||Friday June 23, 2017 6:23 AM EDT (10:23 UTC)||Moonrise 5:05AM||Moonset 7:59PM||Illumination 1%|
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|ANZ335 Long Island Sound West Of New Haven Ct/port Jefferson Ny- 403 Am Edt Fri Jun 23 2017 |
Today..S winds 5 to 10 kt, becoming sw 10 to 15 kt with gusts to 20 kt this afternoon. Seas 1 ft or less, then around 2 ft this afternoon. Numerous showers with isolated tstms, mainly this morning.
Tonight..SW winds 10 to 15 kt. Seas 1 to 2 ft. Chance of showers and tstms in the evening, then chance of showers after midnight with vsby 1 to 3 nm.
Sat..SW winds 10 to 15 kt, becoming W in the afternoon. Seas 1 to 2 ft. Showers likely. Vsby 1 to 3 nm.
Sat night..NW winds 5 to 10 kt. Seas 1 ft or less.
Sun..W winds around 5 kt, becoming sw in the afternoon. Seas 1 ft or less.
Sun night..W winds 5 to 10 kt. Seas 1 ft or less.
Mon..W winds 5 to 10 kt. Seas 1 ft or less.
Tue..W winds around 5 kt. Seas 1 ft or less. Winds and seas higher in and near tstms.
|ANZ300 403 Am Edt Fri Jun 23 2017 |
Synopsis for the long island waters and new york harbor.. A warm front moves well north this morning. A cold front approaches tonight and moves across the area Saturday. A series of weak fronts move through the area Sunday through early next week.
7 Day Forecast for Marine Location Near Lloyd Harbor, NYHourly EDIT Help
Area Discussion for - New York City/Upton, NY  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 kokx 230937|
area forecast discussion
national weather service new york ny
537 am edt Fri jun 23 2017
A warm front moves well north this morning. A cold front
approaches tonight and moves across the area Saturday. A series
of frontal boundaries will move across the tri-state area
Sunday through Tuesday. A large area of high pressure builds in
Near term until 6 pm this evening
Region will be between bermuda ridging and deepening northern
stream longwave trough across the north central us today... With
one distinct southern stream shortwave riding northeast this
morning and then several weaker vorts riding northeast later
today. At the surface... A warm front washes out pushes north of
the region this morning... With likely pre-frontal trough
development in the lee of the appalachians this afternoon.
Deep southwest flow with sub-tropical connection will result
in an increasingly moist and humid airmass working into the
The initial shortwave rides north through the region this morning
into early afternoon. LLJ forcing weakens as this activity works
towards the region... But a marginally unstable and moist airmass in
place should support scattered shower and isolated thunderstorm
activity to work northeast through the region. Overall appears
to be a marginal instability with moderate shear
situation... Which presents only a low probability of an
isolated strong to severe storm.
In the wake of this shortwave... Potential for partial clearing and
additional destabilization late this afternoon early evening across
nyc metro and points n&w. Although moderate instability uni-
directional shear levels could exists during this time... Appears to
be lack of a distinct focus or trigger for convection until the
evening. In fact... Subsidence and weak mid-level capping may
limit convective activity across the region until late. Based on
instability shear environment there is a threat for isolated
strong to severe storms during this time... Conditional on
sufficient heating and development along any differential
heating boundaries or elevation.
Otherwise... Considerable cloudiness and convective debris today
will keep temps in the lower to mid 80s for most of the region.
If enough breaks in the clouds materialize... Temps could rise
into the upper 80s across nyc metro and points n&w.
There is a moderate risk of rip current development today, due
to building southerly winds waves and a 2 ft long period se
Short term 6 pm this evening through 6 pm Saturday
Northern stream longwave trough continues to deepen into the
upper mississippi river valley and great lakes through the
period... With the shortwave remnants of cindy shearing northeast
towards the region late tonight into Saturday morning. At the
surface... A cold front over the great lakes will slide east
towards the region tonight... With the remnant circulation of
cindy riding NE towards the region along the front.
Leading edge of southern stream shortwave energy and pre-
frontal trough approach the region this evening. Will have to
watch for convection developing over central eastern pa this
afternoon... And whether line segments can translate east in the
moderate mid- level flow into the lower hudson valley NE nj
before instability begins to wane. A conditional low threat for
severe winds gusts exists mainly NW & W of nyc if this activity
The parade of shortwaves late evening into the overnight and|
tropical airmass will keep a threat for iso convection with
heavy downpours overnight. Coastal stratus fog development
possible with high dewpoint airmass advecting across E LI se
ct late today this evening.
Main concern during this period will be approach of cold front
and remnant low of cindy late tonight Saturday morning.
Environment presents a threat for flash flooding along and just
to the south of the path of this low... With pwats in excess of
2+ inches and corfidi vectors indicating potential for slow
moving or back building convective elements. Also can't rule out
an isolated severe wind tornado threat if any MCS type activity
develops in a weak instability but high shear helicity and low-
Drying conditions in the wake of the cold front and cindy
circulation Saturday afternoon... With highs in the mid to upper
A high risk of rip current is likely Saturday with building
southerly swells and wind waves.
Long term Saturday night through Thursday
Nwp is in agreement that a broad upper level trough will remain east
of the rockies into early next week. The h5 flow then flattens from
west to east as a cutoff low pres system moves through the western
canadian provinces... Eventually consolidating with a vortex over
northern quebec. This will sharpen the trough with its axis passing
through Tue night followed by weak ridging for the remainder of the
In terms of sensible weather... Not a whole lot to talk about. A
few cool frontal boundaries will pass through the local
area... The first Sunday aftn eve with just a chance of isold
showers. Mid level warming will keep instability in check so no
tstms in the forecast.
The second boundary approaches on Monday and is very slow to
move through the area. It may become hung up... Before pushing
east Tue night. Despite a decent shortwave and being in the rrq
of a 120+ kt upper jet... Moisture looks very meager... Thus have
kept the forecast dry. Moisture is still limited on tue... But
there could be enough for isold showers tstms in the aftn.
Dry and seasonable weather then returns for the remainder of the
Aviation 10z Friday through Tuesday
A warm front moves well north of the region on Friday
establishing a moist SW flow.
MainlyVFR for the early morning, however there is a chance
that some areas of ifr develop for a few hours, especially east
for kgon and kisp. Pockets of MVFR are possible again on fri
with CIGS around 2500 ft. There is also some potential for
eastern terminals to briefly go to MVFR in the late afternoon
due to low stratus. For now the tafs indicateVFR because
coverage is in question and too uncertain at this time. More
widespread subVFR conditions are expected late in the taf
period after 0z Saturday (see outlook below).
There will be a chance of isold-sct shwrs thru the day (Friday),
with the best potential for thunderstorms after 19z, particularly
in areas along and west of the hudson river.
Sea breeze flow will lessen overnight, and veer to the SW as the
flow weakens. The sea breeze may attempt to back winds closer to
the south again after 16z fri.
Ny metro enhanced aviation weather support...
detailed information, including hourly TAF wind component forecasts,
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|
|44040 - Western Long Island Sound||5 mi||65 min||S 3.9 G 3.9||71°F||69°F|
|44022 - Execution Rocks||13 mi||39 min||SSW 3.9 G 5.8||71°F||68°F|
|KPTN6 - 8516945 - Kings Point, NY||17 mi||54 min||S 6 G 8||75°F||68°F||1009.8 hPa|
|BRHC3 - 8467150 - Bridgeport, CT||23 mi||54 min||SE 2.9 G 4.1||70°F||1009.2 hPa|
|44069||28 mi||54 min||WSW 7.8 G 12||73°F||75°F||72°F|
|BATN6 - 8518750 - The Battery, NY||33 mi||54 min||76°F||68°F||1009.8 hPa|
|ROBN4 - 8530973 - Robins Reef, NJ||37 mi||54 min||WSW 8 G 9.9||1010.5 hPa|
|NWHC3 - 8465705 - New Haven, CT||38 mi||54 min||SSE 1.9 G 2.9||71°F||71°F||1010.2 hPa|
|BGNN4 - 8519483 - Bergen Point West Reach, NJ||41 mi||54 min||77°F||70°F||1010 hPa|
|MHRN6||42 mi||54 min||SSW 7 G 8.9|
|44065 - Entrance to New York Harbor||42 mi||94 min||SSW 12 G 14||69°F||67°F||2 ft||1010.2 hPa (-1.7)||68°F|
|SDHN4 - 8531680 - Sandy Hook, NJ||43 mi||54 min||SSW 2.9 G 4.1||75°F||74°F||1009.5 hPa|
|44039 - Central Long Island Sound||46 mi||69 min||E 1.9 G 1.9||71°F||69°F|
Wind History for Kings Point, NY(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|White Plains - Westchester County Airport, NY||15 mi||88 min||SSW 3||10.00 mi||A Few Clouds||73°F||69°F||89%||1009.5 hPa|
|Islip, Long Island Mac Arthur Airport, NY||23 mi||28 min||SW 6||4.00 mi||Fog/Mist||72°F||71°F||97%||1010 hPa|
|New York, La Guardia Airport, NY||24 mi||33 min||SSW 8||10.00 mi||Mostly Cloudy||79°F||72°F||79%||1009.8 hPa|
Wind History from HPN (wind in knots)
|1 day ago||W||W||NW||NW||W||W|
|2 days ago||W||W||W|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Lloyd Harbor |
Click for Map
Fri -- 05:05 AM EDT Moonrise
Fri -- 05:17 AM EDT -0.71 feet Low Tide
Fri -- 05:22 AM EDT Sunrise
Fri -- 11:13 AM EDT 7.75 feet High Tide
Fri -- 05:26 PM EDT -0.26 feet Low Tide
Fri -- 07:58 PM EDT Moonset
Fri -- 08:29 PM EDT Sunset
Fri -- 10:32 PM EDT New Moon
Fri -- 11:29 PM EDT 8.98 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Throg's Neck |
Click for Map
Fri -- 02:15 AM EDT 0.00 knots Slack
Fri -- 05:06 AM EDT Moonrise
Fri -- 05:24 AM EDT Sunrise
Fri -- 05:40 AM EDT 1.17 knots Max Flood
Fri -- 08:33 AM EDT -0.00 knots Slack
Fri -- 11:54 AM EDT -0.88 knots Max Ebb
Fri -- 02:47 PM EDT 0.00 knots Slack
Fri -- 06:06 PM EDT 1.15 knots Max Flood
Fri -- 08:00 PM EDT Moonset
Fri -- 08:30 PM EDT Sunset
Fri -- 08:56 PM EDT -0.00 knots Slack
Fri -- 10:32 PM EDT New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of Northeast EDIT
Wind Forecast for New York City/Upton, NY (6,6,7,8)(on/off)  Help
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