Saturday, March25, 2017 L-36.com


Marine Weather and Tides
Greenport West, 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 6:41AMSunset 7:10PM Saturday March 25, 2017 7:30 AM EDT (11:30 UTC) Moonrise 5:25AMMoonset 4:32PM Illumination 5% Phase: Waning Crescent; Moon at 27 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- 632 Am Edt Sat Mar 25 2017
Today..N winds around 5 kt...becoming ne this afternoon. Seas 1 to 2 ft. Chance of light rain early this afternoon. Light rain likely late.
Tonight..NE winds 5 to 10 kt...increasing to 10 to 15 kt after midnight. Seas 1 to 2 ft. Light rain likely. Patchy fog. Vsby 1 to 3 nm.
Sun..E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Chance of light rain or drizzle.
Sun night..E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Light rain likely...mainly after midnight.
Mon..E winds 10 to 15 kt...becoming se in the afternoon. Seas 2 to 3 ft. Rain likely.
Mon night..S winds 5 to 10 kt...diminishing to around 5 kt after midnight. Seas 1 to 2 ft. Chance of rain.
Tue..E winds around 5 kt...becoming ne. Seas 1 to 2 ft...then 1 ft or less. Chance of rain.
Wed..N winds 5 to 10 kt. Seas 1 ft or less.
ANZ300 632 Am Edt Sat Mar 25 2017
Synopsis for long island waters and new york harbor.. A back door cold front approaches...and moves south of the ocean waters late in the day. Low pressure gradually approaches from the west Sunday...and moves across on Monday. Another frontal system may impact the region Tuesday and Wednesday.

7 Day Forecast for Marine Location Near Greenport West, NY
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location: 41.1, -72.4     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 251031
afdokx
area forecast discussion
national weather service new york ny
631 am edt Sat mar 25 2017

Synopsis
A cold front over southeastern new york and southern new
england will drift south through the tri-state region today. An
unsettled weather pattern continues Sunday into the middle of
next week. Cold front to our south returns to the region Sunday
night into Monday and moves offshore Monday night. Another
frontal system approaches on Tuesday and moves across Tuesday
night into Wednesday. High pressure returns Thursday ahead of
the next front on Friday.

Near term /until 6 pm this evening/
Minor adjustments needed for temperature and dew point trends.

Have lowered temperatures across ct and southeastern ny more due
to rapid southward advancement of the cold front. Previous
discussion follows.

Temperatures are generally mild this morning amidst cloudy
conditions and subtle warm advection in southerly flow. High
temperatures will likely be achieved this morning or into the
early afternoon before a cold front begins to move through the
area from northeast to southwest. Initially very little
precipitation is expected to reach the ground, but gradual
saturation and increased forcing for ascent with an approaching
upper low and the cold front will lead to the development of
light rain by afternoon- evening.

Short term /6 pm this evening through 6 pm Sunday/
Warm/moist advection will continue above the surface in broad
westerly then southwesterly flow, while cooler conditions at the
surface behind the cold front will maintain a strong inversion
over the area. Overall a favorable set up for patchy fog and
continued cloudy conditions as well as light rain or drizzle
through the weekend as an upper low slowly approaches the
region.

Long term /Sunday night through Friday/
Rain chances increase Sunday night into Monday as a short wave
passes through the area, allowing a warm front to return
northward. A second short wave quickly follows for Tuesday into
Wednesday, with the attendant surface trough/cold front moving
through Tuesday night. Temperatures Tuesday are expected to be
above normal as southerly flow strengthens following the warm
frontal passage. By Wednesday, flow returns to a west-northwest
direction with subsidence, enhanced by downslope flow and
clearing skies again leading to another potentially above normal
temperature day. The unsettled pattern continues through the end
of the week, with a degree of uncertainty for Thursday and
Friday depending on the overall evolution of a series of upper
waves emanating from the pacific.

Aviation /12z Saturday through Wednesday/
A cold front passes south of the terminals this morning. High
pressure then builds down from the north into Saturday evening.

Vfr until 17z-18z, then MVFR conditions develop in light rain
and fog. Ifr conditions likely late this afternoon, with patchy
lifr conditions possible.

S-sw winds less than 10 kt become light and variable 12z-13z as
the front nears, then winds shift to NE with the cold front
passage, 10 kt or less.

Outlook for 06z Sunday through Wednesday
Saturday night-Monday Ifr likely with lifr or lower
possible. Periods of rain, drizzle and fog.

Monday night-Tuesday night MVFR or lower possible.

Wednesday BecomingVFR. NW winds g15-20kt possible in the
afternoon.

Marine
A back door cold front was approaching from southern new england
into southeastern new york. The front is expected to move
slowly across the waters this morning into this afternoon. A
weak surface pressure gradient was keeping winds below small
craft advisory levels. However, ocean seas east of fire island
inlet were running 4 to 6 feet with a component of a short
period southerly swell. With the passage of the cold front an
east to northeast flow develops and persists at least through
the weekend as the cold front remains south of the waters. The
long fetch easterly flow will allow for ocean seas to remain at
minimal small craft levels into at least Sunday and possibly
into the beginning of the week. There may be a brief period late
this afternoon into this evening when ocean seas will be below
small craft levels.

With seas being the main hazard have converted to a small craft for
hazardous seas, Sunday west of fire island inlet, and today through
Sunday east of fire island inlet.

From late Monday through Monday night, sub-sca conditions are
forecast with an overall weak pressure gradient. Seas may build
again to around 5 feet Tuesday as a cold front passes through the
waters. Otherwise winds and seas should remain below SCA levels into
Wednesday.

Hydrology
Rain chances gradually increase through Monday, with around a
half inch to an inch accumulation overall. Unsettled conditions
will continue through the week. With rain expected over a broad
period of time, no hydrologic concerns are anticipated at this
time.

Okx watches/warnings/advisories
Ct... None.

Ny... None.

Nj... None.

Marine... Small craft advisory for hazardous seas from 6 am to 6 pm edt
Sunday for anz355.

Small craft advisory for hazardous seas until 6 pm edt Sunday
for anz350-353.

Synopsis... Md/met
near term... Md
short term... Md
long term... Md
aviation... Met
marine... Met
hydrology... Md


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44039 - Central Long Island Sound 14 mi61 min NE 1.9 G 1.9 41°F
LDLC3 - New London Ledge CT - Ledge Light Weather 22 mi36 min Calm G 1 42°F 37°F
NLNC3 - 8461490 - New London, CT 24 mi43 min N 1 G 1.9 40°F 40°F1019.9 hPa
MTKN6 - 8510560 - Montauk, NY 24 mi43 min 41°F 38°F1020.7 hPa
NWHC3 - 8465705 - New Haven, CT 30 mi43 min ENE 2.9 G 5.1 41°F 39°F1020.2 hPa
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 34 mi41 min 44°F 43°F6 ft1020.5 hPa (+1.8)43°F
BRHC3 - 8467150 - Bridgeport, CT 42 mi43 min N 2.9 G 2.9 40°F 1019.6 hPa

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
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N2
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SW11
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SW15
G22
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G22
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G21
SW9
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G13
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G10
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NW4
G7
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G7
N9
G14
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G11
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G14
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G11
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G14
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G15
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G11
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G15
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G8
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G5
W1
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G6
SE1
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N4
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ago
NW3
NW7
G12
N10
G18
NW11
G26
NW7
G19
N12
G23
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G18
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N14
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G19
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G21
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G17
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G13
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G13
NW4
G10
N5
G11
N6
G10
N5
G10
N6
G9
NW4
W2
G5
NW2

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
The Gabreski Airport, NY22 mi38 minN 08.00 miFair39°F36°F89%1020.5 hPa
Groton / New London, Groton / New London Airport, CT24 mi95 minENE 310.00 miFair38°F35°F89%1019 hPa

Wind History from SNC (wind in knots)
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Last 24hrNW7NW9NW7
G14
NW6NW11NW10N8NW10
G16
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G18
NW8
G16
NW13
G25
NW11
G18
W10
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G15
NW8CalmCalmNW5CalmCalmCalmCalmCalmCalm
1 day agoW5NW12
G19
W8W6
G14
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G18
NW17
G24
NW20
G33
NW19
G33
NW22
G35
NW28
G42
NW18
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NW23
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NW14
G32
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G30
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G26
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G27
NW11
G27
NW11
G20
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G19
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N10NW8
2 days agoNW5N4CalmSW5CalmNW4NW464--3
G10
6SW8SW8
G13
SW6SW4W5W3N6NW5N4--W5W4

Tide / Current Tables for Hashamomuck Beach, Long Island, New York
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Hashamomuck Beach
Click for Map
Sat -- 03:39 AM EDT     0.18 feet Low Tide
Sat -- 05:24 AM EDT     Moonrise
Sat -- 06:44 AM EDT     Sunrise
Sat -- 10:03 AM EDT     4.47 feet High Tide
Sat -- 04:05 PM EDT     -0.05 feet Low Tide
Sat -- 04:31 PM EDT     Moonset
Sat -- 07:07 PM EDT     Sunset
Sat -- 10:28 PM EDT     4.53 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.91.910.30.20.71.52.53.54.24.54.23.42.31.20.3-00.2123.13.94.54.4

Tide / Current Tables for Shinnecock Canal, Railroad Bridge, New York Current
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Shinnecock Canal
Click for Map
Sat -- 02:20 AM EDT     0.00 knots Slack
Sat -- 04:57 AM EDT     1.48 knots Max Flood
Sat -- 05:24 AM EDT     Moonrise
Sat -- 06:44 AM EDT     Sunrise
Sat -- 08:03 AM EDT     -0.00 knots Slack
Sat -- 11:15 AM EDT     -1.65 knots Max Ebb
Sat -- 02:54 PM EDT     0.00 knots Slack
Sat -- 04:32 PM EDT     Moonset
Sat -- 05:23 PM EDT     1.43 knots Max Flood
Sat -- 07:07 PM EDT     Sunset
Sat -- 08:23 PM EDT     -0.00 knots Slack
Sat -- 11:35 PM EDT     -1.65 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.2-0.8-0.20.61.31.51.40.90.1-0.8-1.3-1.6-1.5-1.1-0.60.111.41.41.10.4-0.5-1.2-1.6

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 (7,2,3,4)
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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.