Tuesday, November21, 2017 L-36.com


Marine Weather and Tides
West Hampton Dunes, 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 6:45AMSunset 4:29PM Tuesday November 21, 2017 2:35 PM EST (19:35 UTC) Moonrise 10:16AMMoonset 8:07PM Illumination 10% Phase: Waxing Crescent; Moon at 3 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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ANZ345 South Shore Bays From Jones Inlet Through Shinnecock Bay- 1152 Am Est Tue Nov 21 2017
.small craft advisory in effect through this evening...
This afternoon..SW winds 20 to 25 kt with gusts up to 30 kt. Waves around 2 ft.
Tonight..SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Waves around 2 ft in the evening, then 1 ft or less. Rain after midnight.
Wed..W winds 10 to 15 kt, becoming nw in the afternoon. Gusts up to 25 kt. Waves 1 ft or less, then around 2 ft in the afternoon. Chance of rain in the morning.
Wed night..N winds 10 to 15 kt. Gusts up to 25 kt in the evening. Waves around 2 ft.
Thu..NW winds 5 to 10 kt, becoming W in the afternoon. Waves 1 ft or less.
Thu night..W winds around 10 kt. Waves 1 ft or less.
Fri..W winds 5 to 10 kt. Waves 1 ft or less.
Fri night..SW winds 5 to 10 kt. Waves 1 ft or less.
Sat..SW winds 10 to 15 kt. Waves 1 ft or less.
Sat night..W winds around 10 kt. Waves 1 ft or less.
ANZ300 1152 Am Est Tue Nov 21 2017
Synopsis for the long island waters and new york harbor.. A cold front passes through early Wednesday followed by high pressure. A warm front will lift through on Saturday, followed by a cold front Saturday night.

7 Day Forecast for Marine Location Near West Hampton Dunes, NY
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location: 40.78, -72.69     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 211810
afdokx
area forecast discussion
national weather service new york ny
110 pm est Tue nov 21 2017

Synopsis
A cold front approaches from the west today and passes through
early Wednesday followed by high pressure. A warm front moves
north Saturday followed by a cold front Saturday night. High
pressure builds to the west Sunday and Monday.

Near term until 6 pm this evening
Forecast on track. Mainly sunny day with patchy cirrus. High
temperatures a few degrees above normal due to SW flow ahead of
approaching northern stream trough. Gusty winds this afternoon
20-30 mph, with the highest gusts along the coast due to
increasing surface pressure gradient.

Short term 6 pm this evening through 6 pm Wednesday
Rather impressive shortwave over the gulf of mexico with
convection firing in the right rear quadrant of 100 kt jet
streak. This convection lifts rapidly across fl to off the
carolina coast this evening. Jet then strengthens to 120 kt
ahead of the sharpening of the northern stream shortwave.

Nwp, including the gefs, SREF and hrefv2 (replaced spc's sseo)
ensembles all support rain moving into nyc long island and s.

Ct before sunrise. Have raise pops significantly from previous
forecast due the observed dynamics and the consensus of the
latest nwp.

Rain will move east of the region by noon though as colder air
rushes in Wednesday afternoon with gusty NW winds and clearing
skies.

Long term Wednesday night through Monday
Long range models are in good agreement through fri, with
noticeable differences starting Sat as a shortwave approaching
from the northern rockies interacts with a canadian vortex near
hudson bay. This is leading to timing and amplitude differences
with the 00z ec now developing a cutoff low over new england sun
night. GFS remains open.

As such, no big changes to the previous forecast through the
end of the week, but have cut back on the extent of pops
associated with the warm FROPA on Sat as models have trended
slower and drier. Southern stream shortwave and developing sfc
low passes well S and E of the area Sat sat night as a cold
front moves through the local area. Not much moisture for the
front to work with have kept the forecast dry Sat night.

Since the upper pattern is a bit uncertain next weekend, this
offshore low will need to be watched. If the full latitude
trough amplifies more, the low would shift to the west and could
result in potential impacts.

A secondary cold front with a reinforcing shot of cold air
could bring a few showers to the area on Sun with gusty winds
developing in its wake. Vigorous shortwave in the GFS which ec
is weaker. Schc to low chc pops with this feature. Soundings
mostly support rain at this time, although could get some wet
snowflakes Sun morning N and W of nyc.

Daytime temperatures are expected to be below normal through
the period, except on Sat in the warm sector. Overnight lows
also below normal except Fri Sat nights where they'll be near
normal.

Aviation 18z Tuesday through Sunday
High pressure will slide further of the mid-atlantic coast
today. A cold front will approach from the west late tonight as
low pressure moves up the coast, with the front passing through
during Wed morning.

Vfr until late tonight, then rain with the weak low moving up
the coast will spread into the terminals late tonight into wed
morning, with MVFR conds developing by about 10z-11z at first,
then ifr conds at kisp kgon after 12z-13z.

Gusty SW winds mostly 10-15 kt with gusts 20-25 kt (kgon higher)
should gradually diminish close to and after sunset, to 10 kt or
less by late evening on. Winds will shift NW with cold fropa
mainly early Wed morning, with speeds not picking up until close
to midday in the nyc metros as the rain ends.

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 22 mi65 min SW 19 G 23 52°F 46°F40°F
44039 - Central Long Island Sound 25 mi95 min SSW 19 G 25 56°F 3 ft
NWHC3 - 8465705 - New Haven, CT 37 mi47 min SW 14 G 16 52°F 51°F1017.6 hPa
BRHC3 - 8467150 - Bridgeport, CT 38 mi53 min SSW 9.9 G 17 55°F 51°F1016.8 hPa
MTKN6 - 8510560 - Montauk, NY 43 mi47 min 55°F 53°F1018.2 hPa
44025 - LONG ISLAND 33 NM South of Islip, NY 44 mi45 min SW 25 G 31 56°F 56°F8 ft1018.3 hPa (-2.5)
44040 - Western Long Island Sound 49 mi50 min SW 16 G 21 56°F 2 ft37°F
LDLC3 - New London Ledge CT - Ledge Light Weather 49 mi35 min SW 24 G 28 56°F 1016.8 hPa (-2.1)41°F

Wind History for New Haven, CT
(wind in knots)    EDIT      (on/off)   Help
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NW13
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1 day
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NW21
G29
NW21
G27
NW20
G27
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G23
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G21
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G18
NW10
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G19
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G25
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G28
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SW12
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G17
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SW13
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SW9
G12
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G18
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G22
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G21
NW24
G37
NW22
G33
NW16
G21
NW17
G24

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
The Gabreski Airport, NY5 mi42 minSW 12 G 2410.00 miFair56°F37°F51%1018.6 hPa
Shirley, Brookhaven Airport, NY9 mi39 minSSW 18 G 2510.00 miFair and Breezy56°F39°F55%1018.1 hPa
Islip, Long Island Mac Arthur Airport, NY22 mi39 minSSW 17 G 2410.00 miMostly Cloudy57°F37°F49%1017.9 hPa

Wind History from FOK (wind in knots)
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Last 24hrW11
G25
W10
G17
W7W8W12W10W10W7SW6W9SW8SW4SW8SW6SW7SW4SW7SW9
G15
SW11
G19
SW13
G19
SW12
G23
SW13
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SW15
G27
SW12
G24
1 day agoW23
G31
W17
G29
W12
G24
NW15
G26
W15
G29
NW14
G23
W11W10W14W6W8W8W12
G21
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G25
W14NW15
G23
W10W9W18
G25
W21
G30
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G25
W18
G24
W18
G23
W17
G23
2 days agoS14
G22
S15
G23
S10
G22
S10
G21
S11
G17
SW11
G22
SW10
G20
S6S12
G21
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G26
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G24
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G27
W25
G34
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W18
G32
W26
G37
NW23
G36

Tide / Current Tables for Moriches Coast Guard Station, Long Island, New York
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Moriches Coast Guard Station
Click for Map
Tue -- 03:53 AM EST     0.21 feet Low Tide
Tue -- 06:45 AM EST     Sunrise
Tue -- 08:56 AM EST     2.39 feet High Tide
Tue -- 09:15 AM EST     Moonrise
Tue -- 04:28 PM EST     Sunset
Tue -- 04:32 PM EST     0.07 feet Low Tide
Tue -- 07:08 PM EST     Moonset
Tue -- 09:25 PM EST     1.93 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.20.80.50.30.20.51.21.82.22.42.321.51.10.70.30.10.10.61.21.71.91.91.7

Tide / Current Tables for Shinnecock Canal, Railroad Bridge, New York Current
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Shinnecock Canal
Click for Map
Tue -- 01:44 AM EST     -1.43 knots Max Ebb
Tue -- 05:03 AM EST     0.00 knots Slack
Tue -- 06:44 AM EST     Sunrise
Tue -- 07:38 AM EST     1.49 knots Max Flood
Tue -- 09:14 AM EST     Moonrise
Tue -- 10:59 AM EST     -0.00 knots Slack
Tue -- 02:15 PM EST     -1.63 knots Max Ebb
Tue -- 04:27 PM EST     Sunset
Tue -- 05:57 PM EST     0.00 knots Slack
Tue -- 07:06 PM EST     Moonset
Tue -- 08:08 PM EST     1.11 knots Max Flood
Tue -- 11:16 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1-1.3-1.4-1.1-0.6-00.81.41.51.20.8-0-0.8-1.3-1.6-1.5-1.1-0.600.81.110.80.2

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 (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.