Friday, October20, 2017 L-36.com


Marine Weather and Tides
Greenport West, 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 6:02PM Friday October 20, 2017 2:03 PM EDT (18:03 UTC) Moonrise 7:43AMMoonset 6:54PM Illumination 0% Phase: New Moon; Moon at 0 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
    EDIT      (on/off)   Help
ANZ330 Long Island Sound East Of New Haven Ct/port Jefferson Ny- 1256 Pm Edt Fri Oct 20 2017
This afternoon..NW winds 10 to 15 kt. Seas 2 to 3 ft.
Tonight..NW winds 5 to 10 kt. Seas 1 ft or less.
Sat..N winds around 5 kt, becoming S in the afternoon. Seas 1 ft or less.
Sat night..SW winds 5 to 10 kt. Seas 1 ft or less.
Sun..SW winds around 5 kt, becoming S in the afternoon. Seas 1 ft or less.
Sun night..S winds 5 to 10 kt. Seas 1 ft or less.
Mon..S winds 5 to 10 kt. Seas 1 ft or less.
Mon night..S winds 10 to 15 kt. Seas 1 ft or less, then around 2 ft after midnight. Chance of showers after midnight.
Tue..S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 4 ft. Chance of showers. Vsby 1 to 3 nm in the afternoon.
Tue night..S winds 15 to 20 kt. Seas 2 to 4 ft. Chance of showers in the evening, then showers likely after midnight. Vsby 1 to 3 nm in the evening.
ANZ300 1256 Pm Edt Fri Oct 20 2017
Synopsis for the long island waters and new york harbor.. High pressure builds in through Saturday, sliding offshore Sunday and Monday. A slow moving frontal system will then approach the waters Tuesday with a cold frontal passage early Wednesday.

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


Area Discussion for - New York City/Upton, NY
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kokx 201728
afdokx
area forecast discussion
national weather service new york ny
128 pm edt Fri oct 20 2017

Synopsis
Mild high pressure dominates through Monday. A slow moving
frontal system will then approach the area Tuesday into Tuesday
night with a cold frontal passage by early Wednesday. The front
is slow to depart farther away with a wave of low pressure
developing along it and approaching the area mid into late next
week.

Near term until 6 pm this evening
Minor updates to increase wind speeds and decrease dew points in
the nyc urban areas, as deeper mixing has occurred behind this
morning's frontal passage. NW flow will prevail through the day
with gusts gradually decreasing through the evening as high
pressure builds across the area. Otherwise, no sensible change
in air mass with mostly clear skies and highs similar to
yesterday, mainly in the upper 60s to lower 70s, and a few
degrees higher in the ny nj metro areas.

Short term 6 pm this evening through 6 pm Saturday
Ridging continues to build into the region with weak WAA through
the short term providing dry and unseasonably warm conditions.

Even though optimal conditions will exist for radiational
cooling tonight, clear skies and light calm winds, the WAA will
limit its impact. 925mb temps at 12z this morning are progged
to be between 10c and 12c, and increase to 15-16c by 12z sat.

Sunny conditions expected on Sat with just few-sct cirrus. Highs
will remain above normal ranging in the mid to upper 70s except
on the twin forks of LI and SE coastal ct.

Long term Saturday night through Thursday
Warm weather continues through Monday as the jet stream remains
north of the region with upper level ridging. At the surface,
the dominant feature will be high pressure eventually moving
offshore and the resulting s-sw flow. Mainly clear sky
conditions are expected to continue through Sunday.

Clouds increase Monday into Monday night ahead of the next
frontal system. The next chance of rain showers arrives late
Monday night into Tuesday, when a deep upper level trough
approaches from the west.

The trough further deepens Tuesday along the eastern seaboard
with increasing meridional flow. This will give plentiful
moisture to a developing frontal system at the surface. The
frontal system will be approaching the region Tuesday into
Tuesday night with the region being in the warm sector to the
east of the low with strengthening southerly flow, thereby
increasing warm air advection. Precipitable water increases to
near 1.5 inches from the moisture advection. This is much above
normal for this time of year. According to okx sounding
climatology, it would be above the 90th percentile. Some
moderate to heavy rainfall will be possible.

The cold front moves across Wednesday morning, with a
substantial decrease in precipitable water thereafter to less
than 1 inch. The front slows down and is slow to depart away
from the region. The numerical forecast models show weak low
pressure development along it and the low approaching the region
mid into late next week, with rain shower chances continuing.

Temperatures are expected to be well above normal this weekend
through Tuesday with a gradual decline thereafter. Highs this
weekend through Tuesday are forecast to be well into the 70s
with lows trending to be well into the 50s and near 60 for some
locations along the coast and nyc. The highs are forecast to be
more in the 60s for next Wednesday and next Thursday.

Aviation 18z Friday through Wednesday
Vfr through the TAF period as high pressure builds in from the
west through tonight, then begins to move offshore Saturday.

Good confidence in the wind forecast with the typical 20
degrees of variability either side of forecast through the day.

Gusts continue up to around 20 kt, with the gusts becoming more
occasional after 20z with the gusts expected to end around 22z.

Winds become light and variable to near calm tonight. Saturday
morning a S to SW light flow develops.

Ny metro enhanced aviation weather support...

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

Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LDLC3 - New London Ledge CT - Ledge Light Weather 22 mi49 min NW 17 G 21 68°F 1016.9 hPa34°F
NLNC3 - 8461490 - New London, CT 24 mi64 min NNW 6 G 11 70°F 64°F1017.7 hPa (-1.6)
MTKN6 - 8510560 - Montauk, NY 24 mi64 min 64°F 63°F1017.6 hPa (-2.1)
NWHC3 - 8465705 - New Haven, CT 30 mi64 min NNW 13 G 19 67°F 66°F1019 hPa (-1.5)
BRHC3 - 8467150 - Bridgeport, CT 42 mi64 min W 8 G 12
44069 46 mi64 min WSW 7.8 G 9.7 65°F 62°F47°F

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
Last
24hr
SW10
G18
SW7
G15
SW10
G16
SW10
G14
SW8
G12
SW7
G11
SW8
G14
SW6
G10
SW8
G11
SW5
SW4
SW3
W4
W3
G7
N2
NE1
N3
NW2
N4
NW4
G10
NW6
G14
NW4
G8
NW6
G11
NW6
G11
1 day
ago
SW10
SW5
G12
SW5
G10
SW5
SW4
S1
S2
--
NE1
N2
N1
N1
N3
N4
N4
N3
N4
N2
N4
N2
SW7
G11
SW6
G12
SW9
G13
SW11
G15
2 days
ago
NE4
S10
G13
SW7
G11
SW6
G9
SW5
SW3
W2
SW3
SW3
NW2
W2
W1
NW2
W3
W3
G7
W2
G6
SW3
W2
W3
NW2
NW1
G4
SW3
W4
G7
W1
G6

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chester, Chester Airport, CT20 mi69 minWNW 11 G 179.00 miFair68°F33°F28%1018.6 hPa
The Gabreski Airport, NY22 mi71 minWNW 1210.00 miFair69°F32°F25%1019.4 hPa
Groton / New London, Groton / New London Airport, CT24 mi68 minNW 1110.00 miFair70°F36°F29%1017.8 hPa

Wind History from SNC (wind in knots)
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
Last 24hrSW10
G17
S8
G18
SW8
G16
S7
G12
S7SW7S6S5CalmSW46W7
G16
W64W3NW5NW5W3W6NW7NW7
G14
6
G13
NW8NW9
G15
1 day agoS6SW8SW7SW3SW3CalmSW4CalmSW3SW3CalmCalmCalmSW3CalmCalmSW3CalmS346SW11
G17
SW8
G18
S11
2 days agoN3CalmSW5SW5SW3CalmSW6SW4SW3SW4SW3SW365
G10
W8W7
G12
4CalmW4CalmW33NW44

Tide / Current Tables for Hashamomuck Beach, Long Island, New York
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Hashamomuck Beach
Click for Map
Fri -- 12:01 AM EDT     4.69 feet High Tide
Fri -- 05:54 AM EDT     0.06 feet Low Tide
Fri -- 07:07 AM EDT     Sunrise
Fri -- 07:42 AM EDT     Moonrise
Fri -- 12:16 PM EDT     5.00 feet High Tide
Fri -- 06:00 PM EDT     Sunset
Fri -- 06:23 PM EDT     -0.13 feet Low Tide
Fri -- 06:54 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.74.43.52.41.20.40.10.41.32.43.64.554.842.81.60.5-0.1-00.61.62.73.7

Tide / Current Tables for Shinnecock Canal, Railroad Bridge, New York Current
   EDIT      (on/off)   Help   One Week of Data
Shinnecock Canal
Click for Map
Fri -- 01:03 AM EDT     -1.72 knots Max Ebb
Fri -- 04:30 AM EDT     0.00 knots Slack
Fri -- 07:07 AM EDT     Sunrise
Fri -- 07:10 AM EDT     1.72 knots Max Flood
Fri -- 07:42 AM EDT     Moonrise
Fri -- 10:16 AM EDT     -0.00 knots Slack
Fri -- 01:33 PM EDT     -1.80 knots Max Ebb
Fri -- 05:04 PM EDT     0.00 knots Slack
Fri -- 06:01 PM EDT     Sunset
Fri -- 06:55 PM EDT     Moonset
Fri -- 07:32 PM EDT     1.46 knots Max Flood
Fri -- 10:32 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.5-1.7-1.5-1.1-0.50.51.41.71.61.20.3-0.6-1.3-1.7-1.8-1.4-0.9-0.10.91.41.41.20.5-0.4

Weather Map and Satellite Images
       (on/off)   Help
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 (14,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Upton, NY
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.