Saturday, December16, 2017 L-36.com


Marine Weather and Tides
North Haven, NY

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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 7:07AMSunset 4:22PM Saturday December 16, 2017 11:45 AM EST (16:45 UTC) Moonrise 6:22AMMoonset 4:38PM Illumination 3% Phase: Waning Crescent; Moon at 28 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- 928 Am Est Sat Dec 16 2017
.small craft advisory in effect until 7 pm est this evening...
Today..W winds around 15 kt with gusts up to 25 kt. Waves around 2 ft. Slight chance of rain and snow showers late with vsby 1 to 3 nm.
Tonight..NW winds 10 to 15 kt. Gusts up to 25 kt in the evening. Waves 1 ft or less.
Sun..NW winds 5 to 10 kt. Waves 1 ft or less.
Sun night..W winds around 5 kt, becoming S around 5 kt after midnight. Waves 1 ft or less.
Mon..SW winds around 5 kt, becoming W in the afternoon. Waves 1 ft or less. Chance of snow and rain in the morning with vsby 1 to 3 nm.
Mon night..W winds 5 to 10 kt. Waves 1 ft or less.
Tue..SW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Waves 1 ft or less, then around 2 ft in the afternoon.
Tue night..W winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Waves 2 to 3 ft.
Wed..W winds 20 to 25 kt. Waves 2 to 4 ft.
Wed night..NW winds 15 to 20 kt. Waves around 2 ft.
ANZ300 928 Am Est Sat Dec 16 2017
Synopsis for the long island waters and new york harbor.. Weak low pressure passes to the north of the forecast waters today. High pressure builds over the waters tonight and Sunday. Then, a series of weak low pressure and frontal systems will pass through the area through mid week.

7 Day Forecast for Marine Location Near North Haven, NY
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location: 41.03, -72.27     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 161444
afdokx
area forecast discussion
national weather service new york ny
944 am est Sat dec 16 2017

Synopsis
Weak low pressure passes to the north today bringing a cold
front south of the region. High pressure builds in for tonight
and Sunday. Then a series of lows will pass through the area
through mid week.

Near term until 6 pm this evening
Mean upper troughing continues over new england today with the
next vorticity maximum moving across the northern great lakes.

This energy will pass just to the north today. At the surface a
weak low will pass through new england. A cold front passes
through late this afternoon and into early this evening.

Some snow showers are possible this afternoon across the
interior as the front and upper energy approach. Drier low
levels across the region should prevent any widespread activity,
but some of these snow showers could translate towards to the
coast by early this evening as the cold front moves through. Do
not anticipate any accumulation other than possible a dusting
if a snow shower does occur.

Breezy westerly winds are forecast today with gusts 20-25 mph at
times. High temperatures will range from the lower and middle
30s inland to the upper 30s near the coast.

Short term 6 pm this evening through 6 pm Sunday
A few flurries may be lingering into the early evening hours if
the cold front is slower to push through. At this time will keep
the evening dry. Height rise tonight through Sunday as the flow
becomes more zonal. A dampening shortwave will be moving into
the weak upper ridge late Sunday and Sunday night, and pass
through Sunday night.

Long term Sunday night through Friday
A weakening shortwave passes through Sunday night into Monday.

Have lowered the probabilities slightly as the shortwave is
weakening and flat, with little moisture. Warmer air will be
pushing into the region, and as the warm air lifts north of the
cold surface air a period of freezing rain, some ice pellets and
snow will be possible. Too early for specific details on this
light precip event.

Thereafter, models in fairly good agreement with the broad bu
shallow northern stream trough approaching the region on
Tuesday and sliding through during the midweek. At the surface,
the primary low pressure system rides through quebec ontario
with trailing cold front approaching the region Tuesday night.

Overall, appears to be mainly a light QPF event for the Monday
night into Tuesday evening period, due to limited interaction
between northern and southern stream. Thermal profile suggests
precip would be mainly liquid, but could be dealing with
freezing rain across interior Monday night as cold air
typically has a tough time scouring our in this setup.

Upper trough swings through the NE Tue night into Wed with a
glancing shot of modifying arctic air in the wake of the cold
front for Wed thu.

Upper flow flattens and even becomes a bit ridged for Thursday
ahead of the next northern stream trough digging into the upper
plains, which should allow for a moderation in temps ahead of
next potential frontal system.

Aviation 15z Saturday through Wednesday
Weak low pressure tracks across new england today dragging a
cold front through this evening.

Vfr with CIGS between 3-5 kft developing from late morning
through the afternoon. Have kept CIGS above 3kft, but some
locations may drop to MVFR aft 16z. Don't have high enough
confidence to include in tafs attm, but amendments for this are
possible. Otherwise, localized MVFR or ifr conditions cannot be
ruled out in isolated rain or snow showers late in the day
mainly N and W of nyc terminals.

Westerly winds increase to 10 to 20 kt, with gusts 20 to 30 kt.

Gusts may linger a few hours longer than forecast, but are
expected to become less frequent after 20-21z. Cold fropa
between 22z and 02z with winds veering to the NW and
diminishing.

Outlook for 12z Sunday through Wednesday
Sun Vfr during the day. Chance MVFR in a mix of -ra -sn towards
midnight.

Mon Low chance MVFR in -ra for coastal terminals, light wintry
mix inland. Improvement as the day progresses.

Tue MVFR possible with a slight chance of showers.

Wed Vfr. NW winds g20-30kt.

Marine
Gusty small craft winds are likely across all the forecast
waters today into early this evening as a rather tight pressure
gradient moves through the waters as low pressure moves into the
atlantic and high pressure builds to the west. Gusty winds may
linger into this evening on the ocean waters. Ocean seas may
remain around small craft levels into Sunday evening as well.

So, the advisory remains into this evening on the ocean.

The next chance for SCA conditions will be late Tuesday Tue eve
ahead of approaching cold front, but higher likelihood of
widespread SCA Tuesday night through Wednesday night with tight
pressure gradient and strong CAA in wake of cold front. Gales
are possible during this time frame.

Hydrology
No significant hydrologic impacts expected.

Equipment
Nyc NOAA weather radio station kwo-35 (162.55 mhz) is off the
air for an extended period of time.

Okx watches warnings advisories
Ct... None.

Ny... None.

Nj... None.

Marine... Small craft advisory until 7 pm est this evening for anz330-
335-338-340-345.

Small craft advisory until 1 am est Sunday for anz350-353-355.

Synopsis... 24 met
near term... Ds met
short term... Met
long term... Nv
aviation... Jmc 24
marine... 24 met
hydrology... 24 met
equipment...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MTKN6 - 8510560 - Montauk, NY 17 mi45 min 33°F 40°F1015.9 hPa (+1.3)
LDLC3 - New London Ledge CT - Ledge Light Weather 22 mi30 min W 19 G 24 32°F 1014.6 hPa18°F
NLNC3 - 8461490 - New London, CT 25 mi153 min W 6 G 14 27°F 49°F1015.9 hPa
NWHC3 - 8465705 - New Haven, CT 38 mi45 min W 11 G 17 31°F 41°F1016.9 hPa (+1.2)
BRHC3 - 8467150 - Bridgeport, CT 49 mi159 min WSW 8 G 15 28°F 43°F1016.3 hPa

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
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N4
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NW8
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G25
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Montauk, Montauk Airport, NY19 mi1.9 hrsW 12 G 23 mi35°F23°F61%1016.6 hPa
The Gabreski Airport, NY23 mi52 minW 11 G 2310.00 miPartly Cloudy33°F19°F56%1017.2 hPa
Groton / New London, Groton / New London Airport, CT24 mi49 minW 1210.00 miOvercast32°F17°F54%1015.9 hPa

Wind History from MTP (wind in knots)
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Last 24hrCalmCalmCalmNE3NE4NE5CalmCalmN4N3NW7NW9
G16
W13
G21
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W12
G23
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1 day agoNW9NW11
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NW9NW6NW9NW7NW8NW7N4CalmCalmCalm
2 days agoW15
G30
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G32
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G27
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W6W5NW4NE6N8N9N8N8N9

Tide / Current Tables for Cedar Point, Long Island Sound, New York
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Cedar Point
Click for Map
Sat -- 02:12 AM EST     0.20 feet Low Tide
Sat -- 05:21 AM EST     Moonrise
Sat -- 07:07 AM EST     Sunrise
Sat -- 08:40 AM EST     2.88 feet High Tide
Sat -- 02:56 PM EST     -0.03 feet Low Tide
Sat -- 03:38 PM EST     Moonset
Sat -- 04:21 PM EST     Sunset
Sat -- 09:08 PM EST     2.16 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.10.50.20.30.81.422.52.82.92.62.11.60.80.2-00.20.71.11.622.221.7

Tide / Current Tables for Shinnecock Canal, Railroad Bridge, New York Current
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Shinnecock Canal
Click for Map
Sat -- 01:53 AM EST     0.00 knots Slack
Sat -- 04:58 AM EST     1.60 knots Max Flood
Sat -- 05:22 AM EST     Moonrise
Sat -- 07:08 AM EST     Sunrise
Sat -- 07:47 AM EST     -0.00 knots Slack
Sat -- 10:58 AM EST     -1.61 knots Max Ebb
Sat -- 02:40 PM EST     0.00 knots Slack
Sat -- 03:39 PM EST     Moonset
Sat -- 04:23 PM EST     Sunset
Sat -- 05:24 PM EST     1.23 knots Max Flood
Sat -- 07:55 PM EST     -0.00 knots Slack
Sat -- 11:07 PM EST     -1.48 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.1-0.70.111.51.61.40.7-0.2-0.9-1.4-1.6-1.5-1.2-0.60.311.21.20.7-0.1-0.8-1.2-1.5

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Northeast    EDIT
Geos

Wind Forecast for New York City/Upton, NY (11,2,3,4)
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Ground Weather Radar Station Upton, NY
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weather_mapweather_map weather_map

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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 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.