Friday, April20, 2018 L-36.com


Marine Weather and Tides
East Marion, NY

Version 3.4
What's New / NOTES
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.
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.

Sunrise 6:00AMSunset 7:37PM Friday April 20, 2018 2:35 PM EDT (18:35 UTC) Moonrise 9:39AMMoonset 12:00AM Illumination 29% Phase: Waxing Crescent; Moon at 5 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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ANZ330 Long Island Sound East Of New Haven Ct/port Jefferson Ny- 200 Pm Edt Fri Apr 20 2018
This afternoon..W winds 10 to 15 kt with occasional gusts up to 25 kt. Seas around 2 ft.
Tonight..NW winds 10 to 15 kt. Seas around 2 ft.
Sat..NW winds 5 to 10 kt, becoming W in the afternoon. Seas 1 ft or less.
Sat night..N winds 5 to 10 kt. Seas 1 ft or less.
Sun..NW winds 5 to 10 kt, becoming sw in the afternoon. Seas 1 ft or less.
Sun night..SW winds 5 to 10 kt, becoming W after midnight. Seas 1 ft or less.
Mon..N winds around 5 kt, becoming S in the afternoon. Seas 1 ft or less.
Mon night..SW winds 5 to 10 kt. Seas 1 ft or less.
Tue..S winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas 1 ft or less.
Tue night..SE winds 5 to 10 kt. Seas 1 ft or less. Chance of rain after midnight.
ANZ300 200 Pm Edt Fri Apr 20 2018
Synopsis for the long island waters and new york harbor.. High pressure builds in from the west through tonight and remains over the waters through Monday. A coastal low approaches from the southeastern seaboard Tuesday, and moves through Wednesday, and to the northeast of the area Thursday.

7 Day Forecast for Marine Location Near East Marion CDP, NY
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location: 41.17, -72.32     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 201809
afdokx
area forecast discussion
national weather service new york ny
209 pm edt Fri apr 20 2018

Synopsis
High pressure builds in the west through tonight, then remains
over the region into Monday. A coastal low will likely affect
the region the middle of next week.

Near term until 6 pm this evening
Forecast does remain on track, with winds slowly diminishing.

Only minor updates to temperatures and dew points this
afternoon.

Closed upper low and associated coastal low lift north through
the canadian maritimes today, with trough axis moving through by
early afternoon.

Cyclonic flow remains with a gusty NW flow. Despite deep
mixing, 850 hpa temps of around -5 c will keep temps 7-10
degrees below seasonal normals.

Short term 6 pm this evening through 6 pm Saturday
Deep closed low continues to lift north along the eastern
canadian seaboard, with mean troughing continuing over the NE us
in its wake. At the surface, high pressure builds into the
region from the west. Although a weak backside shortwave will
have a surface trough moving through the region in the
afternoon.

Clear and chilly conditions tonight, with areas of frost across
outlying areas where temps radiatively cool to the upper 20s to
lower 30s. Elsewhere lows generally in the mid 30s.

Continued W NW flow on Saturday, but weaker than today. A
gradual moderation in airmass and deep mixing should allow temps
to rise into the mid to upper 50s. Mostly sunny skies expected,
with just few-sct afternoon CU with shortwave trough passage.

Long term Saturday night through Thursday
The northern branch of the upper level jet will be near to just
south of the region late this weekend and then will be moving
north of the region for Monday. The southern branch of the upper
level jet getting enhanced by an upper level trough near the
gulf early next week will be approaching the region towards
midweek along with the upper level trough. The southern branch
shows some phasing northeast of the region going into next
Thursday with the rest of the southern branch staying south and
west of the region.

At the surface, a large area of high pressure and its
subsidence will keep minimal clouds late this weekend. The high
will move offshore late Monday through Tuesday. During this
timeframe, the airmass will moderate as winds will be lighter
due to a weak pressure gradient.

Towards the middle of next week, particularly starting Tuesday
night is when rain chances return to the forecast. This will be
as a low pressure system approaches from the southeast coast.

The low center itself, appearing in the models as a triple
point, moves across late Wednesday or Wednesday night. Then this
low will move north to northeast of the region Thursday. Its
magnitude remains rather weak so not much of an increase in
pressure gradient is expected. Winds will not increase that much
as a result.

One feature to note though will be the significant precipitable
water. There is some model indication that this parameter will
reach 1 to 1.25 inch Wednesday. This happens to be when most
model precipitation is forecast as well, coinciding with the
most vertical lift. There is a chance there could be some heavy
rain at times as the precipitable water value will be
approaching or even exceeding the 90th percentile for that time
of year according to okx precipitable water sounding
climatology.

The rain will be likely Wednesday into Wednesday evening, with
chances of rain remaining into Thursday as well with the upper
level trough to the west of the region.

Aviation 18z Friday through Wednesday
A weak trough of low pressure crosses the area this afternoon.

High pressure then builds in from the west into Saturday
morning.

Vfr through the TAF period.

Wind gusts around 25 kts are expected through the afternoon.

Winds will then abate this evening, with speeds decreasing to
around 10kt. City and coastal terminals will lose their gusts
after 0z, with inland terminals a few hours sooner. Winds will
range around 10 kts late Saturday morning and afternoon. Wind
direction will start off NW on Saturday, before becoming more
westerly towards the early afternoon for the city terminals.

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
LDLC3 - New London Ledge CT - Ledge Light Weather 16 mi41 min NW 17 G 23 48°F 24°F
44039 - Central Long Island Sound 18 mi36 min WNW 12 G 16 44°F 2 ft
NLNC3 - 8461490 - New London, CT 18 mi48 min NW 9.9 G 18 49°F 42°F1018.7 hPa
MTKN6 - 8510560 - Montauk, NY 21 mi48 min 44°F 43°F1019.2 hPa
NWHC3 - 8465705 - New Haven, CT 32 mi48 min N 17 G 21 46°F 45°F1020.6 hPa
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 36 mi46 min W 19 G 23 42°F 42°F4 ft1019.9 hPa (+1.0)30°F
BRHC3 - 8467150 - Bridgeport, CT 46 mi54 min NNW 8 G 16 47°F 43°F1020.2 hPa

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
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N2
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NW7
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G22
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N1
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G10
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SW8
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G11
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G15
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G16
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G12
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G12

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chester, Chester Airport, CT18 mi41 minNW 1210.00 miFair50°F24°F37%1019.6 hPa
Groton / New London, Groton / New London Airport, CT18 mi1.7 hrsWNW 15 G 2210.00 miFair50°F26°F39%1018.3 hPa
Montauk, Montauk Airport, NY22 mi1.7 hrsWNW 11 G 17 mi49°F30°F48%1019.2 hPa

Wind History from HTO (wind in knots)
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Last 24hrNW5NW8
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NW8W8
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1 day agoW11
G23
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SW7SW5SW5SW4SW4CalmCalmCalmSW3CalmSE3N3N6NE3NE5N13
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N7NE6CalmN4
2 days agoSW9
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W6W12
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W7W5W5W4W9
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G25
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G17

Tide / Current Tables for Orient, Long Island Sound, New York
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Orient
Click for Map
Fri -- 01:34 AM EDT     3.27 feet High Tide
Fri -- 06:02 AM EDT     Sunrise
Fri -- 08:33 AM EDT     -0.09 feet Low Tide
Fri -- 09:39 AM EDT     Moonrise
Fri -- 02:16 PM EDT     2.48 feet High Tide
Fri -- 07:34 PM EDT     Sunset
Fri -- 08:38 PM EDT     0.35 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.93.23.22.92.21.50.90.3-0-00.41.11.82.22.52.421.510.70.40.40.71.5

Tide / Current Tables for The Race, Long Island Sound, New York Current
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The Race
Click for Map
Fri -- 03:06 AM EDT     -0.00 knots Slack
Fri -- 06:01 AM EDT     Sunrise
Fri -- 06:23 AM EDT     -3.58 knots Max Ebb
Fri -- 09:38 AM EDT     Moonrise
Fri -- 09:38 AM EDT     0.01 knots Slack
Fri -- 12:30 PM EDT     2.97 knots Max Flood
Fri -- 03:45 PM EDT     -0.00 knots Slack
Fri -- 06:49 PM EDT     -2.99 knots Max Ebb
Fri -- 07:33 PM EDT     Sunset
Fri -- 09:51 PM EDT     0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.22.71.50.1-1.4-2.7-3.5-3.4-2.4-10.51.92.82.92.11-0.3-1.7-2.7-3-2.4-1.20.21.6

Weather Map and Satellite Images
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wmap_A
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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for New York City/Upton, NY (14,3,4,5)
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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.