Tuesday, March28, 2017 L-36.com


Marine Weather and Tides
Shelter Island Heights, NY

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:36AMSunset 7:13PM Tuesday March 28, 2017 11:15 PM EDT (03:15 UTC) Moonrise 7:11AMMoonset 7:59PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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- 955 Pm Edt Tue Mar 28 2017
Overnight..N winds 5 to 10 kt. Waves 1 ft or less. Patchy fog. Rain...ending late. Vsby 1 to 3 nm.
Wed..N winds 10 to 15 kt with occasional gusts up to 25 kt. Waves 1 ft or less...then around 2 ft in the afternoon.
Wed night..N winds 15 to 20 kt with gusts up to 30 kt. Waves around 2 ft.
Thu..N winds 10 to 15 kt with gusts up to 20 kt...becoming nw around 5 kt in the afternoon. Waves 1 to 2 ft in the morning... Then 1 ft or less.
Thu night..SW winds around 5 kt...becoming se around 5 kt after midnight. Waves 1 ft or less.
Fri..E winds 5 to 10 kt...becoming se 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 1 ft or less...then 1 to 2 ft in the afternoon. Rain likely.
Fri night..E winds 10 to 15 kt with gusts up to 20 kt. Waves 1 to 2 ft. Rain.
Sat..N winds 10 to 15 kt...diminishing to 5 to 10 kt after midnight. Waves 1 to 2 ft...then 1 ft or less. Rain likely in the morning...then chance of rain at night.
Sun..N winds 5 to 10 kt...becoming nw. Waves 1 ft or less.
ANZ300 955 Pm Edt Tue Mar 28 2017
Synopsis for long island waters and new york harbor.. Low pressure will move southeast of long island tonight followed by high pressure Wednesday through the day Thursday. Low pressure approaching from the central states will impact the region Thursday night into Saturday. High pressure will build in on Sunday.

7 Day Forecast for Marine Location Near Shelter Island Heights, NY
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location: 41.06, -72.35     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 290013
afdokx
area forecast discussion
national weather service new york ny
813 pm edt Tue mar 28 2017

Synopsis
Low pressure will move southeast of long island tonight followed
by high pressure Wednesday through the day Thursday. Low
pressure approaching from the central states will impact the
region Thursday night into Saturday. High pressure will build in
on Sunday and Monday. Another disturbance may affect the area
next Tuesday.

Near term /until 6 am Wednesday morning/
The combination of both a weak upper level short wave and low
pressure just southeast of atlantic city is producing widespread
rain and mainly light fog across the entire local area.

Pops were increased to reflect near term trends until 03z.

Radar estimated hourly rainfall rates up to .3 caused
significant within bank rises across streams in western union
county with ewr measuring .34 inches in 1 hour.

Otherwise, the latest animated satellite imagery shows the back
edge of the enhanced clouds across eastern pa, where light rain
is still occurring.

Still holding with rain tapering off aft 04z w-e, ending by 10z
extreme east sections.

Used a guidance blend for lows tonight, with lower 40s invof
nyc, upper 30s most elsewhere, and isolated mid 30s well inland.

Short term /6 am Wednesday morning through Wednesday night/
Dry weather with a northwesterly breeze. Despite a cooler deep
layer air mass in place, sfc temperatures will actually be
warmer than Tuesday because of deep mixing. Mostly sunny skies
are progged, with some fair weather CU especially NW of nyc.

Took the high side of guidance for temps, with mid/upper 50s
most places, and upper 40s/lower 50s in the higher elevations.

Guidance may be underdone by quite a bit on winds for wed
evening as low pressure off to the east intensifies. Model
soundings out east show winds 35-40 kt atop the mixed layer.

Trended forecast higher, with gusts up to 25 lasting until about
midnight.

Lows should be in the mid 30s INVOF nyc, lower 30s along the
coastlines and in the nyc suburbs, and 25-30 elsewhere.

Long term /Thursday through Tuesday/
High pressure builds in for Thursday, then moves offshore Thursday
night. High temperatures on Thursday will be in the low to mid 50s.

Clouds will increase Thursday night as warm advection begins to move
in ahead of an approaching low pressure system. Expect periods of
rain starting Thursday night into Saturday. Some lingering cold air
across the northern portions of our CWA Thursday night may result in
a mix of snow and rain before warm advection increases. So have kept
the mix of snow and rain inland. High temperatures on Friday and
Saturday will be in the mid 40s to around 50.

Canadian high pressure builds in for late Saturday night into
Monday. Another disturbance may approach for Tuesday. Temperatures
during this period will be in the mid to upper 50s which is near
normal for this time of year.

Aviation /00z Wednesday through Sunday/
Low pressure along a frontal boundary moves east of the region
overnight, with winds backing from NE to NW at near 10 kt or
less. High pressure builds in thereafter through Wednesday.

Expecting mainly ifr and locally below conditions tonight. The
rain this evening will taper off late but the low stratus
will remain. As winds become more NW early Wednesday, conditions
will eventually improve toVFR.VFR for Wednesday overall but
with NW gusts near 20 kt during the day.

Ny metro enhanced aviation weather support...

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

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44039 - Central Long Island Sound 17 mi46 min E 5.8 G 7.8 39°F 1 ft
NLNC3 - 8461490 - New London, CT 25 mi46 min NE 2.9 G 4.1 43°F 40°F1013.2 hPa
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 30 mi86 min 41°F 42°F5 ft1012 hPa (+0.0)41°F
NWHC3 - 8465705 - New Haven, CT 33 mi46 min NNE 8.9 G 11 43°F 40°F1013.8 hPa
BRHC3 - 8467150 - Bridgeport, CT 45 mi46 min N 1.9 G 4.1 43°F 1013.2 hPa

Wind History for New London, CT
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
The Gabreski Airport, NY21 mi23 minNE 103.00 miRain Fog/Mist41°F39°F93%1013.7 hPa
Montauk, Montauk Airport, NY23 mi22 minNNE 7 mi41°F39°F96%1013.6 hPa

Wind History from FOK (wind in knots)
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Last 24hrCalmNE5NE6NE5E3E4SE5NE8E5SE9
G15
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E6E8E6NE5E8E8E8NE8NE8NE10NE10
1 day agoE5E6E7E8E7E10E8E8E7E8SE10
G16
S7SW5SW7SW7SW6N8NW5CalmCalmN3CalmCalmN6
2 days agoNE7NE8NE5NE7NE7NE6NE8NE8NE9NE6NE7E7E7
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Tide / Current Tables for Greenport, Long Island Sound, New York
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Greenport
Click for Map
Tue -- 05:18 AM EDT     -0.34 feet Low Tide
Tue -- 06:39 AM EDT     Sunrise
Tue -- 07:10 AM EDT     Moonrise
Tue -- 11:22 AM EDT     2.86 feet High Tide
Tue -- 05:34 PM EDT     -0.26 feet Low Tide
Tue -- 07:10 PM EDT     Sunset
Tue -- 07:58 PM EDT     Moonset
Tue -- 11:42 PM EDT     3.12 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.72.11.40.70.1-0.3-0.20.41.222.52.82.82.31.60.80.2-0.2-0.20.211.92.63

Tide / Current Tables for Shinnecock Canal, Railroad Bridge, New York Current
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Shinnecock Canal
Click for Map
Tue -- 01:13 AM EDT     -1.92 knots Max Ebb
Tue -- 04:40 AM EDT     0.00 knots Slack
Tue -- 06:39 AM EDT     Sunrise
Tue -- 07:09 AM EDT     1.77 knots Max Flood
Tue -- 07:11 AM EDT     Moonrise
Tue -- 10:19 AM EDT     -0.00 knots Slack
Tue -- 01:35 PM EDT     -1.92 knots Max Ebb
Tue -- 04:56 PM EDT     0.00 knots Slack
Tue -- 07:11 PM EDT     Sunset
Tue -- 07:31 PM EDT     1.89 knots Max Flood
Tue -- 07:59 PM EDT     Moonset
Tue -- 10:45 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.6-1.9-1.8-1.2-0.60.31.31.81.61.20.3-0.7-1.4-1.8-1.9-1.4-0.70.11.11.81.81.50.8-0.3

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 (23,6,7,8)
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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.