Monday, May29, 2017 L-36.com


Marine Weather and Tides
Shelter Island Heights, NY

Version 3.4
What's New / NOTES
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 5:18AMSunset 8:17PM Monday May 29, 2017 11:08 AM EDT (15:08 UTC) Moonrise 9:26AMMoonset 12:00AM Illumination 17% Phase: Waxing Crescent; Moon at 4 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
ANZ340 Peconic And Gardiners Bays- 1015 Am Edt Mon May 29 2017
Today..E winds 15 to 20 kt with gusts up to 20 kt...diminishing to 10 to 15 kt with gusts up to 20 kt this afternoon. Waves around 2 ft. Showers late this morning and early afternoon...then chance of showers late. Patchy fog. Vsby 1 to 3 nm.
Tonight..NE winds 5 to 10 kt. Waves 1 ft or less. Chance of showers in the evening. Patchy drizzle. Patchy fog. Vsby 1 to 3 nm.
Tue..SE winds 5 to 10 kt. Waves 1 ft or less. Patchy fog in the morning with vsby 1 to 3 nm.
Tue night..SE winds 5 to 10 kt. Waves 1 ft or less. Chance of showers in the evening...then showers likely after midnight.
Wed..S winds 5 to 10 kt. Waves 1 ft or less. Chance of showers in the morning.
Wed night..SW winds 5 to 10 kt. Waves 1 ft or less.
Thu..W winds 5 to 10 kt. Waves 1 ft or less.
Fri..SW winds 5 to 10 kt. Waves 1 ft or less. Chance of showers at night.
ANZ300 1015 Am Edt Mon May 29 2017
Synopsis for long island waters and new york harbor.. A low pressure system passes to the south...then southeast through tonight. A weak frontal boundary approaches from the west Tuesday then crosses the area Tuesday night. A weak cold front then moves over the tri-state from Wednesday into Wednesday night. High pressure builds across the mid-atlantic coast Thursday and Thursday night. A cold front approaches from the west Friday.

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


Area Discussion for - New York City/Upton, NY
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kokx 291426
afdokx
area forecast discussion
national weather service new york ny
1026 am edt Mon may 29 2017

Synopsis
A low pressure system approaches passes through into this
evening. A weak cold front approaches from the west Tuesday,
then crosses the area Tuesday night... Followed by another on
Wednesday. High pressure then builds to the south through
Thursday night. Another cold front approaches on Friday then
slowly crosses the area Friday night.

Near term until 6 pm this evening
Two vorticity maximums ahead of a broader upper low to the west
are influencing the development of showers across the area this
morning. Localized brief moderate to heavy rainfall will be
possible as another round moves across nj into portions of
southern ny ct including long island, evident in upstream
observations and given convective appearance on satellite.

Showers gradually taper off from west to east by evening, though
with onshore flow expect a continuation of patchy drizzle and
fog.

Unseasonably cool temperatures today as clouds and rain keep
temperatures in the upper 50s to around 60 for highs, some 10 to
15 degrees below normal.

There is a moderate risk of rip currents for area beaches.

Short term 6 pm this evening through 6 pm Tuesday
Frontal system pushes east of the area tonight, along with the
coastal storm. After some lingering showers early this evening,
conditions should remain dry. However, drizzle and fog may
persist overnight, with low level moisture trapped under an
inversion.

Another front approaches slowly from the west. Chances for rain
increase from west to east during the day Tuesday. Enough
instability for some thunder, but nothing severe expected.

Temperatures continue to be below normal.

Long term Tuesday night through Sunday
The models continue to have differences in how they handle the very
broad closed low that will be over SE canada Tuesday night through
Thursday night. As a result they also differ in the strength and
timing of shortwaves rotating around the base of the low, and hence
on the precise timing of precipitation during this time frame.

However, do have likely pops in for Tuesday night, as the models do
agree there should be some measurable rainfall across the region
then, but do have differences in timing during the night. Lows
Tuesday night should be a few degrees above normal.

For Wednesday and Wednesday night have mainly chance pops across
northern zones and slight chance pops across southern zones. With
showalter indices progged to 0 to -2, also have a slight chance of
thunder in for Wednesday afternoon and evening. Highs Wednesday and
lows Wednesday night should be a few degrees above normal as well.

Zonal flow sets up Thursday and Thursday night, and it appears the
region and with significant shortwaves progged to the NE and NW during
this time frame, have gone with a dry forecast then.

The model differences become even more noticeable Friday-Saturday.

For Friday, do have chance pops throughout by afternoon and continue
through Friday evening (along with a slight chance of thunder). Then
limit pops to slight chance from late Friday night-Saturday morning.

Then go with a dry forecast late Saturday Saturday night as both the
gfs and ECMWF show the core of the closed low to the NE then.

The new ECMWF has joined the 00z GFS in keeping Sunday dry, but
noting it previously had a coastal low approaching (now just
suppressed farther s), do have slight chance pops for Sunday.

Temperatures Thursday through Saturday night will feature near
normal highs and lows a few degrees above normal. Highs Sunday are
currently forecast to be a few degrees below normal.

Aviation 14z Monday through Friday
A weakening frontal system will approach from the west, while
low pressure passes off to the southeast today. The area will
be between the two systems, under an area of weak high
pressure. This will result in widespread clouds and periods of
light rain and or drizzle.

Expect widespread MVFR CIGS through this evening, with local
ifr at khpn. Showers moving in from the west could bring tempo
ifr vsby to the nyc metros toward midday, with thunder chances
nil as instability off to the west weakens. Thereafter could see
tempo ifr CIGS at any time from mid afternoon into the evening,
but the main push for ifr CIGS looks to be after midnight
tonight.

High confidence in E to ene winds 8-15 kt this morning,
diminishing to 10 kt or less this afternoon. Confidence still
only medium at best on wind direction this evening, which could
range anywhere from NW to se, but speeds should be light.

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
MTKN6 - 8510560 - Montauk, NY 21 mi50 min 52°F 53°F1013.9 hPa
LDLC3 - New London Ledge CT - Ledge Light Weather 22 mi38 min ENE 14 G 16 52°F 1013.1 hPa50°F
NLNC3 - 8461490 - New London, CT 25 mi50 min NE 5.1 G 7 53°F 54°F1014.2 hPa
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 30 mi78 min 53°F 54°F6 ft1012.1 hPa (+0.0)53°F
NWHC3 - 8465705 - New Haven, CT 33 mi50 min E 7 G 13 56°F 60°F1014.4 hPa
BRHC3 - 8467150 - Bridgeport, CT 45 mi50 min E 13 G 18 55°F 1013.5 hPa
44069 46 mi68 min E 16 G 21 56°F 64°F56°F

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
11
AM
12
PM
1
PM
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
Last
24hr
S9
S10
S10
G13
S11
S11
S10
S6
G10
S5
G8
SE9
S7
SE4
E4
E2
E3
E4
NE3
NE2
N2
G5
E2
G5
E5
G9
E7
G11
NE5
G9
NE4
G9
NE3
1 day
ago
N3
G6
N2
G9
N2
NE3
NE2
S6
G9
S8
S8
SW5
G8
SW3
G6
SW2
G5
SW1
S3
N3
--
--
SE2
E3
SE3
S4
S4
S3
S7
S8
2 days
ago
NW3
G8
W7
G11
W5
G9
S5
S4
S4
S5
S3
S4
S4
W2
G5
N1
G4
NW2
NW2
G6
N2
NW1
G4
NW3
G7
NW2
NW1
W2
N3
N5
NE2
N4
G7

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
The Gabreski Airport, NY21 mi75 minENE 710.00 miLight Rain54°F51°F90%1014.1 hPa
Montauk, Montauk Airport, NY23 mi74 minE 10 G 15 mi52°F51°F97%1014.3 hPa
Chester, Chester Airport, CT24 mi73 minENE 610.00 miMostly Cloudy52°F51°F100%1013.9 hPa

Wind History from FOK (wind in knots)
12
PM
1
PM
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
Last 24hrS10S11S9S8SE10SE8SE8E5E6SE7SE5SE8E5E5E5E7E8E6E8E7E9
G22
E10NE7E7
1 day ago--W8S5--S7SE6SE6S4S3S5CalmS3SE3CalmS3SW3CalmSE4SE3S3S6S6S9S7
2 days agoW10W12SW5SW6
G16
S5CalmW10
G19
3CalmN7N5N8NW6NW4NW6W3CalmW3CalmW4NW10N12N8N10
G16

Tide / Current Tables for Greenport, Long Island Sound, New York
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Greenport
Click for Map
Mon -- 01:35 AM EDT     3.37 feet High Tide
Mon -- 05:20 AM EDT     Sunrise
Mon -- 08:08 AM EDT     -0.26 feet Low Tide
Mon -- 09:26 AM EDT     Moonrise
Mon -- 02:19 PM EDT     2.66 feet High Tide
Mon -- 08:13 PM EDT     Sunset
Mon -- 08:21 PM EDT     0.22 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.93.33.32.92.21.50.70.1-0.3-0.10.51.21.92.42.62.62.21.61.10.60.20.30.81.5

Tide / Current Tables for Shinnecock Canal, Railroad Bridge, New York Current
   EDIT      (on/off)   Help   One Week of Data
Shinnecock Canal
Click for Map
Mon -- 12:40 AM EDT     -0.00 knots Slack
Mon -- 03:52 AM EDT     -2.03 knots Max Ebb
Mon -- 05:21 AM EDT     Sunrise
Mon -- 07:32 AM EDT     0.00 knots Slack
Mon -- 09:27 AM EDT     Moonrise
Mon -- 10:00 AM EDT     1.47 knots Max Flood
Mon -- 01:02 PM EDT     -0.00 knots Slack
Mon -- 04:09 PM EDT     -1.72 knots Max Ebb
Mon -- 07:35 PM EDT     0.00 knots Slack
Mon -- 08:13 PM EDT     Sunset
Mon -- 10:20 PM EDT     1.75 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.7-0.4-1.2-1.8-2-1.7-1.2-0.50.41.21.51.40.90-0.8-1.4-1.7-1.5-1-0.40.41.31.71.7

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 (11,2,3,4)
      (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.