Wednesday, December13, 2017 L-36.com


Marine Weather and Tides
Nissequogue, 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 4:27PM Wednesday December 13, 2017 5:53 AM EST (10:53 UTC) Moonrise 3:31AMMoonset 3:03PM Illumination 25% Phase: Waning Crescent; Moon at 25 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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ANZ335 Long Island Sound West Of New Haven Ct/port Jefferson Ny- 359 Am Est Wed Dec 13 2017
.small craft advisory in effect until 6 am est early this morning...
.gale warning in effect through this afternoon...
Today..W winds 20 to 25 kt, increasing to 25 to 30 kt early this afternoon, then diminishing to 20 to 25 kt late. Seas 4 to 6 ft.
Tonight..W winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Seas 2 to 4 ft. Chance of snow after midnight with vsby 1 to 3 nm.
Thu..NW winds 10 to 15 kt with gusts up to 20 kt. Seas 1 ft or less. Snow likely in the morning with vsby 1 to 3 nm.
Thu night..NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 1 ft or less.
Fri..W winds 5 to 10 kt. Seas 1 ft or less.
Fri night..W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 1 ft or less.
Sat..W winds 10 to 15 kt, becoming nw 15 to 20 kt in the afternoon. Seas around 2 ft.
Sat night..NW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Seas around 2 ft in the evening, then 1 ft or less.
Sun..SW winds 5 to 10 kt. Seas 1 ft or less.
Sun night..SW winds around 10 kt. Seas 1 ft or less, then around 2 ft after midnight. Chance of rain. Vsby 1 to 3 nm after midnight.
ANZ300 359 Am Est Wed Dec 13 2017
Synopsis for the long island waters and new york harbor.. High pressure builds briefly today across the area waters. A weak low pressure system will cross the area waters late tonight through Thursday. High pressure briefly builds over the waters Friday. Low pressure passes southeast of the area Friday night into Saturday, followed by a second wave of low pressure late Sunday and Monday.

7 Day Forecast for Marine Location Near Nissequogue, NY
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location: 40.89, -73.21     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 130914
afdokx
area forecast discussion
national weather service new york ny
414 am est Wed dec 13 2017

Synopsis
High pressure builds across the area today. A low pressure
system tracks south of the area late tonight then moves offshore
Thursday. High pressure briefly builds over the region Thursday
through Friday. Low pressure passes southeast of the region
Friday night into Saturday, followed by a second wave of low
pressure late Sunday and Monday. High pressure briefly builds
over the region Monday night, followed by another chance of
unsettled weather for mid-week.

Near term until 6 pm this evening
Dry, cold and windy conditions expected today as high pressure
builds into the area. Highs today will be in the upper 20s to
lower 30s. Wind gusts will remain just below advisory levels
through much of the day with wind gusts of up to 40 mph. This
will make temperatures feel colder with wind chills in the teens
to around 20.

Short term 6 pm this evening through 6 pm Thursday
Winds are forecast to diminish tonight, as high pressure moves
across the area. Temperatures tonight will be in the upper teens
to low to mid 20s. A clipper will then approach late tonight
from the ohio valley, tracking just south of long island through
Thursday. There will be enough cold air in place to support an
all snow event from late tonight into early Thursday morning.

Precipitation amounts will be light with mainly less than an
inch expected. High temperatures on Thursday will be in the
upper 20s to mid 30s. Precipitation is expected to end by
Thursday afternoon as the clipper moves further offshore.

Long term Thursday night through Tuesday
The long term period starts off with weak high pressure over the
region Thursday night into Friday. 13 00z forecast guidance
indicating a shortwave upper level low diving out of canada and
moving over the region Friday night into Saturday. As it does, a
surface low develops, passing well offshore. Thinking at this point,
that most of the region stays dry, but can not rule out a slight
chance of some snowflakes across the twin forks of LI and eastern
ct.

Weak high pressure and ridging then briefly builds back over the
region Saturday night into Sunday, allowing temperatures to rebound a
bit back to more seasonable levels. Another weak wave of low
pressure slides across region late Sunday through Monday. Both the
ecmwf and GFS capture this system, however the ECMWF is a bit more
robust with its precipitation. Also, there are some slight timing
issues with just how quickly the system moves into and out of the
region. With the warmer temperatures in place, do expect
precipitation to be either rain or a rain snow mix along the coast,
with temperatures cold enough for some light snow inland.

Temperatures do warm enough on Monday for precipitation to
become rain everywhere.

Dry conditions then expected Monday night into the first part of
Tuesday. Additional light precipitation is then possible Tuesday
afternoon into Tuesday night as another shortwave slides across the
region. A few left over rain or snow showers will be possible on
Wednesday, however for now will keep conditions dry as weak high
pressure starts to build southwest of the region.

Aviation 09z Wednesday through Sunday
Vfr today as low pressure pulls into the canadian maritimes.

MVFR conditions or lower are possible tonight in snow as
another area of low pressure approaches from the west, generally
after 05z. Less than an inch of accumulations is possible
during this time frame.

As for winds, W winds of 20 to 25 kt true, with gusts near to
slightly above 35 kt. There could be some occasional gusts of 40
kt or slightly higher. Best timing for the strongest gusts is 13z
to 21z. Thereafter, gusts should slowly diminish through the
rest of the TAF period.

Ny metro enhanced aviation weather support...

detailed information, including hourly TAF wind component fcsts,
can be found at:
http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44069 15 mi53 min WNW 23 G 29 24°F 45°F11°F
BRHC3 - 8467150 - Bridgeport, CT 20 mi53 min WNW 8 G 16
44022 - Execution Rocks 27 mi53 min W 19 G 31 25°F 13°F
KPTN6 - 8516945 - Kings Point, NY 30 mi53 min NNW 20 G 26 23°F 44°F999.5 hPa (-0.7)
NWHC3 - 8465705 - New Haven, CT 32 mi53 min NW 23 G 26 22°F 45°F996.1 hPa (+0.0)
44039 - Central Long Island Sound 34 mi120 min WNW 23 G 31 29°F 5 ft
44025 - LONG ISLAND 33 NM South of Islip, NY 44 mi63 min WNW 33 G 39 27°F 52°F9 ft997.1 hPa (-0.0)
44065 - Entrance to New York Harbor 44 mi63 min WNW 33 G 41 26°F 52°F6 ft997.8 hPa (+0.0)16°F
BATN6 - 8518750 - The Battery, NY 45 mi53 min 23°F 47°F1000.2 hPa (-0.3)
ROBN4 - 8530973 - Robins Reef, NJ 48 mi53 min W 27 G 32 22°F 1000.1 hPa (+0.0)

Wind History for Bridgeport, CT
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Islip, Long Island Mac Arthur Airport, NY9 mi2 hrsWNW 18 G 2910.00 miA Few Clouds and Breezy23°F5°F46%996.9 hPa
Farmingdale - Republic Airport, NY15 mi60 minWNW 16 G 3010.00 miFair21°F3°F45%998 hPa
Shirley, Brookhaven Airport, NY19 mi2 hrsWNW 15 G 2410.00 miMostly Cloudy25°F12°F58%996.6 hPa
Bridgeport, Sikorsky Memorial Airport, CT20 mi61 minW 18 G 2810.00 miFair and Breezy22°F3°F46%996.4 hPa

Wind History from ISP (wind in knots)
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Last 24hrS12S11SE11S11S10
G19
S10S10S10SW9NW10NW14
G18
NW12NW8W9W12NW22
G30
NW15NW12NW14
G21
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G28
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G25
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1 day agoW15W8SW6W8W9W11--NW10NW9W6NW7CalmCalmCalmCalmCalmCalmCalmCalmE4E3E5E6S8
2 days agoW6W6W6W10W9W11W9W13W14W12W7SW7SW9W11W9SW7W8SW8W9W6SW8W6W8SW8

Tide / Current Tables for Nissequogue River entrance, Long Island Sound, New York
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Nissequogue River entrance
Click for Map
Wed -- 01:14 AM EST     0.25 feet Low Tide
Wed -- 02:30 AM EST     Moonrise
Wed -- 07:09 AM EST     Sunrise
Wed -- 07:28 AM EST     7.33 feet High Tide
Wed -- 01:52 PM EST     0.03 feet Low Tide
Wed -- 02:03 PM EST     Moonset
Wed -- 04:25 PM EST     Sunset
Wed -- 07:58 PM EST     6.66 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.30.51.53.14.86.37.27.26.453.41.60.400.61.83.456.26.76.25.23.8

Tide / Current Tables for Northport, Northport Bay, Long Island Sound, New York
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Northport
Click for Map
Wed -- 01:25 AM EST     0.25 feet Low Tide
Wed -- 02:31 AM EST     Moonrise
Wed -- 07:09 AM EST     Sunrise
Wed -- 07:36 AM EST     7.55 feet High Tide
Wed -- 02:03 PM EST     0.02 feet Low Tide
Wed -- 02:03 PM EST     Moonset
Wed -- 04:25 PM EST     Sunset
Wed -- 08:05 PM EST     6.85 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.20.30.41.42.94.76.47.47.56.85.53.820.600.41.63.356.36.86.55.64.2

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 (5,6,7,8)
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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.