Saturday, June24, 2017 L-36.com


Marine Weather and Tides
Greenport, 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 5:16AMSunset 8:29PM Saturday June 24, 2017 9:56 AM EDT (13:56 UTC) Moonrise 5:59AMMoonset 8:57PM 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
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ANZ340 Peconic And Gardiners Bays- 239 Am Edt Sat Jun 24 2017
Today..W winds 10 to 15 kt. Waves 1 ft or less. Patchy fog early this morning. Showers and slight chance of tstms, mainly this morning. Vsby 1 to 3 nm.
Tonight..W winds 5 to 10 kt. Waves 1 ft or less.
Sun..SW winds 5 to 10 kt. Waves 1 ft or less.
Sun night..W winds 5 to 10 kt. Waves 1 ft or less.
Mon..SW winds 5 to 10 kt. Waves 1 ft or less.
Mon night..W winds 5 to 10 kt. Waves 1 ft or less.
Tue..SW winds 5 to 10 kt, becoming W after midnight. Waves 1 ft or less.
Wed..W winds 5 to 10 kt. Waves 1 ft or less. Winds and waves higher in and near tstms.
ANZ300 239 Am Edt Sat Jun 24 2017
Synopsis for the long island waters and new york harbor.. A cold front moves across the waters this morning into the afternoon. A secondary cold front moves across tonight. High pressure builds to the southwest of the waters Sunday into Monday. A weak cold front moves across the waters later Monday. High pressure then builds towards the mid atlantic coast Tuesday and Wednesday.

7 Day Forecast for Marine Location Near Greenport, NY
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location: 41.1, -72.37     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 241142
afdokx
area forecast discussion
national weather service new york ny
742 am edt Sat jun 24 2017

Synopsis
A cold front and low pressure moves across the area this
morning. High pressure builds to our southwest Sunday into
Monday. A weak cold front will move through our area later
Monday. High pressure builds towards the mid atlantic coast
Tuesday and Wednesday, before moving offshore Thursday.

Unsettled weather returns for the end of the week.

Near term until 6 pm this evening
Collab with wpc and SPC this busy morning. Near term concerns
nowcast focused on convection moving through the area, with
far western locations now tapering off. Showers tstms passing
through before noon in eastern zones.

Urban flooding is a concern across NE nj, and nyc metro. Warm
rainfall processes, and accum rates likely to out perform model
data. Limiting factor is short duration, fast movement.

Rainfall rates of 0.5 to 1 inch per hour, with overall QPF up to
an inch, locally higher.

Monitoring for isolated gusty winds, and isolated tornadoes.

Once this activity passes, westerly flow and sunshine will allow
temps to rise quickly, with 80s to near 90 anticipated. Best
chance of 90 will be for nyc metro and NE new jersey. Leaned
toward or even edged higher end of guidance slightly.

There is a moderate risk for rip current development today.

Short term 6 pm this evening through 6 pm Sunday
For tonight, a secondary cold front moves across which will
result in winds becoming more northerly late after its passage.

Dry conditions, light winds and continued mostly clear
conditions will result in radiational cooling. A vast range of
lows will be seen in the region from upper 50s in rural inland
sections to lower 70s in parts of nyc from the met guidance.

Long term Sunday night through Friday
Dry conditions expected on Sunday as a ridge of high pressure builds
towards the mid atlantic coast. Expect high temperatures to be in
the low to mid 80s on Sunday. A weak surface cold front will affect
the local area Monday afternoon into Tuesday. The system will not
have a great deal of moisture associated with it, but cooler
temperatures aloft may spark off a shower or t-storm late
Monday into early Tuesday. High temperatures on Monday and
Tuesday are expected to be in the mid to upper 70s to lower 80s.

High pressure continues to build towards the area on Wednesday and
slowly moves offshore on Friday. A few showers are possible Friday
afternoon. Temperatures will start out in the upper 70s to near 80
on Wednesday then slowly increase to mid to upper 80s by Friday.

Aviation 12z Saturday through Wednesday
A line of showers now spreading across city terminals and exits
quickly this morning. The main concern with any heavier showers
early this morning is for locally heavy rain which can lower
visibilities down to ifr over the next hour or two. Front
timing appears to be sped up a bit, so have adjusted wind shift
and end of showers up.

Winds will switch to west, then briefly just north of west with
frontal passage which should be around 12-13z for city
terminals.VFR for the remainder of the TAF period after front
passes. For a brief time for the late morning and early
afternoon winds may go closer to just north of west (close to
300 or 310 magnetic). Winds gust to around 20 kt for city
terminals until 22z or thereabout.

Outlook for 00z Sunday through Wednesday
Saturday night-Sunday night Vfr. NW wind early Saturday
night, otherwise west wind through Sunday night.

Monday-Tuesday Vfr. A slight chance of shra tsra Monday
afternoon, and a chance of shra tsra on Tuesday.

Wednesday Vfr.

Marine
Rough ocean condition S are expected today into tonight. Gusty
south to southwest, then west winds expected.

Seas remain elevated before subsiding tonight. Sub SCA winds on
non-ocean waters are expected through tonight.

Conditions across the area waters are expected to remain below
small craft advisory levels Sunday through the middle of the
week.

Hydrology
The threat for minor urban and poor drainage flooding with
localized flash flooding continues this morning. Total rain
expected is 0.5 to 1 inch with locally higher amounts. With
tropical moisture from the remnants of cindy getting entrained
along the front, heavy rain likely this morning.

There are no hydrologic impacts expected Sunday and through the
end of the week.

Tides coastal flooding
Astronomical tides are running very high, especially during the
evening high tide cycles.

Less than 1 ft of surge is needed during these evening high tide
cycles for minor flooding, and in some cases less then 1 2 ft.

The expected S SW flow is not favorable for surge, but a
background anomaly will likely be enough for minor coastal
flooding of the most vulnerable coastal locales along the south
shore bays of western long island, along jamaica bay, and along
western long island sound during this time.

Equipment
Kokx weather radar is scheduled for maintenance starting today june
23rd for a period of 3 days.

Okx watches warnings advisories
Ct... None.

Ny... None.

Nj... None.

Marine... Small craft advisory until 2 am edt Sunday for anz355.

Small craft advisory until 6 am edt Sunday for anz350-353.

Synopsis... Pw
near term... Pw
short term... Pw
long term... Fig
aviation... Je
marine... Pw
hydrology... Pw
tides coastal flooding...

equipment...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44039 - Central Long Island Sound 15 mi177 min SSW 12 G 16 72°F 1 ft70°F
LDLC3 - New London Ledge CT - Ledge Light Weather 21 mi42 min SW 4.1 G 5.1 69°F 1000.8 hPa68°F
MTKN6 - 8510560 - Montauk, NY 22 mi39 min 69°F 65°F1001.6 hPa
NLNC3 - 8461490 - New London, CT 23 mi39 min WSW 2.9 G 2.9 71°F 63°F1001.3 hPa
NWHC3 - 8465705 - New Haven, CT 31 mi39 min SSW 5.1 G 6 69°F 71°F1002.1 hPa
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 33 mi67 min 67°F 64°F7 ft1001.8 hPa (-1.7)67°F
BRHC3 - 8467150 - Bridgeport, CT 43 mi39 min SSW 5.1 G 6 70°F 1001.4 hPa
44069 47 mi57 min W 9.7 G 16 71°F 75°F71°F

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
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Last
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S9
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SW5
G9
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NE1
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--
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G7

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chester, Chester Airport, CT21 mi4.4 hrsVar 410.00 miFair72°F71°F100%1002.4 hPa
Groton / New London, Groton / New London Airport, CT23 mi61 minNW 61.00 miHeavy Rain Fog/Mist70°F69°F97%1001 hPa
The Gabreski Airport, NY23 mi64 minW 61.00 miThunderstorm in Vicinity Heavy Rain Fog/Mist71°F69°F94%1002.1 hPa
Montauk, Montauk Airport, NY24 mi63 minS 3 mi71°F70°F96%1002.2 hPa

Wind History from SNC (wind in knots)
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Last 24hrSW4SW66S7S7S10S9S11SW7S15
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1 day agoCalmNW6NW66CalmNW6
G13
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SW75S3S4S5S45SW5SW5SW5SW4W4
2 days agoCalm45SW8
G14
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SW9CalmSW6W3SW3CalmCalmCalmCalmCalmNW4NW3

Tide / Current Tables for Greenport, Shelter Island Sound, New York
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Greenport
Click for Map
Sat -- 05:13 AM EDT     -0.49 feet Low Tide
Sat -- 05:17 AM EDT     Sunrise
Sat -- 05:59 AM EDT     Moonrise
Sat -- 11:05 AM EDT     2.72 feet High Tide
Sat -- 05:16 PM EDT     -0.12 feet Low Tide
Sat -- 08:25 PM EDT     Sunset
Sat -- 08:57 PM EDT     Moonset
Sat -- 11:29 PM EDT     3.54 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.22.51.70.80-0.5-0.30.41.222.52.72.62.11.50.90.3-0.100.71.62.53.13.5

Tide / Current Tables for Shinnecock Canal, Railroad Bridge, New York Current
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Shinnecock Canal
Click for Map
Sat -- 12:58 AM EDT     -2.10 knots Max Ebb
Sat -- 04:34 AM EDT     0.00 knots Slack
Sat -- 05:19 AM EDT     Sunrise
Sat -- 06:00 AM EDT     Moonrise
Sat -- 06:56 AM EDT     1.63 knots Max Flood
Sat -- 09:56 AM EDT     -0.00 knots Slack
Sat -- 01:12 PM EDT     -1.91 knots Max Ebb
Sat -- 04:30 PM EDT     0.00 knots Slack
Sat -- 07:15 PM EDT     2.13 knots Max Flood
Sat -- 08:25 PM EDT     Sunset
Sat -- 08:57 PM EDT     Moonset
Sat -- 10:34 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.9-2.1-1.8-1.3-0.60.51.41.61.40.9-0.1-1-1.6-1.9-1.7-1.2-0.50.51.62.121.60.7-0.5

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 (9,2,3,4)
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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.