Thursday, May25, 2017 L-36.com


Marine Weather and Tides
Napeague, 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 8:11PM Thursday May 25, 2017 4:07 PM EDT (20:07 UTC) Moonrise 5:32AMMoonset 7:59PM 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- 353 Pm Edt Thu May 25 2017
.small craft advisory in effect until 6 pm edt this evening...
Tonight..E winds 10 to 15 kt...diminishing to 5 to 10 kt after midnight...then becoming S late. Gusts up to 25 kt early...then gusts up to 20 kt for the reminder of this evening. Waves around 2 ft this evening...then 1 ft or less. Patchy fog this evening. Chance of light rain and drizzle this evening. Showers and scattered tstms late this evening and overnight. Vsby 1 to 3 nm this evening.
Fri..W winds 10 to 15 kt. Waves 1 to 2 ft. Showers likely in the morning.
Fri night..NW winds 5 to 10 kt. Waves 1 ft or less.
Sat..N winds 5 to 10 kt...becoming se in the afternoon. Waves 1 ft or less.
Sat night..SE winds around 5 kt. Waves 1 ft or less.
Sun..E winds 5 to 10 kt. Waves 1 ft or less.
Sun night..E winds 5 to 10 kt. Waves 1 ft or less. Chance of light rain or drizzle.
Mon..SE winds around 5 kt. Waves 1 ft or less. Chance of rain in the daytime.
Tue..SW winds 5 to 10 kt. Waves 1 ft or less. Chance of showers at night. Winds and waves higher in and near tstms.
ANZ300 353 Pm Edt Thu May 25 2017
Synopsis for long island waters and new york harbor.. Low pressure tracks through the waters tonight and then off the new england coast on Friday. Weak high pressure builds in Friday night and Saturday...then gives way to high pressure building down from southeastern canada for the weekend. This high then retreats to the northeast early next week as weak low pressure tracks to the south. A cold front approaches from the west on Tuesday

7 Day Forecast for Marine Location Near Napeague, NY
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location: 41, -72.08     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 251825
afdokx
area forecast discussion
national weather service new york ny
225 pm edt Thu may 25 2017

Synopsis
Low pressure will deepen over the mid-atlantic today, track through
the tri-state region tonight and into the maritimes on Friday. A
broad area of high pressures builds in for the first half of the
weekend, then a slow moving frontal system will bring the potential
for showers from Sunday into Tuesday.

Near term through Friday
Middle level drying is fast approaching from the south and west
early this afternoon. The back edge of the steady rain is now
moving through the nyc metro and will continue tracking
northward into the early afternoon. As the middle levels dry
out, we will be left with just a chance for light rain or
drizzle. Some uncertainty on whether or not there will be any
precipitation this afternoon, with the highest confidence in
continued low clouds and areas of fog.

Easterly winds will be gradually weaken this afternoon as the
pressure gradient slackens, but a few gusts up to 20-25 mph
possible near the coast early.

Attention then turns to the h5 low, currently over the ohio
valley and a vigorous piece of energy located across the
southeast. The upper low will swing this vorticity energy
towards the region tonight, with impressive dpva aloft and
steepening lapse rates in the middle levels. The models all
produce convective precip. As a result, showers and embedded
thunderstorms are expected overnight.

The upper low reaches the gulf of me on fri. This will allow
for decreasing coverage and intensity of showers through the
day. The downslope flow could allow for clearing, especially
along the coast, by the end of the day.

Temps will be below normal today, then will nudge closer on fri
as the rain ends. A blend of the guidance and raw model data
was used.

Short term Friday night through Sunday night
Weak ridging builds in Fri ngt and Sat which will attempt to
produce fair weather. There is a suggestion of shrtwv energy
swinging thru on sat. If this materializes, isold-sct shwrs will
be possible. A rainy day however is not expected attm. A broad
upr lvl low then drops into the midwest, producing SW flow aloft
across the fcst area sun. This will produce an increasing
chance for shwrs, particularly Sun aftn thru Sun ngt.

Temps will remain close to or blw normal thru the period. The
superblend was used.

Long term Monday through Wednesday
The upr low over the midwest will drive a slow moving frontal
sys thru the region for the beginning of the week. There is
some uncertainty wrt the timing, with the ECMWF slightly faster
than the gfs. Chance pops remain in the fcst.

Weak ridging builds in Tuesday, followed by more shortwaves
rotating around the S canada closed low, which has slid a bit
farther E into hudson bay NW ontario), Tuesday night and
Wednesday - with maybe some more isolated- scattered showers.

Temperatures should be within a few degrees of either side of
normal Sunday-Monday night, then run above normal Tuesday-
Wednesday.

Aviation 18z Thursday through Tuesday
An area of low pressure will move northeast over the region
tonight... And just to the northeast of the region Friday.

Ifr lifr CIGS continue into tonight. Potential for lifr
visibilities this evening in dz fog. Showers with a chance for
thunderstorms between 03z and 10z. Heavy downpours are the main
threat.

Gradual improvement to MVFRVFR CIGS Friday morning... With
quicker improvement toVFR vsby. Chance for showers.

Easterly winds 10-20 kt with gusts to 25 kt this
afternoon... Weakening this evening. Light and variable winds
tonight... Becoming northwest and gusty Friday morning.

Ny metro enhanced aviation weather support...

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

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MTKN6 - 8510560 - Montauk, NY 7 mi49 min 56°F 53°F1003.4 hPa
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 21 mi137 min 53°F 53°F6 ft1003.9 hPa (-1.2)53°F
LDLC3 - New London Ledge CT - Ledge Light Weather 21 mi37 min NE 13 G 17 58°F 1002.9 hPa56°F
NLNC3 - 8461490 - New London, CT 25 mi49 min NE 2.9 G 7 58°F 56°F1003.7 hPa
44039 - Central Long Island Sound 32 mi97 min E 19 G 23 55°F 4 ft54°F
NWHC3 - 8465705 - New Haven, CT 48 mi49 min ENE 6 G 12 60°F 59°F1002.9 hPa

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
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SW7
G11
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NE1
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G6
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SE6
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G12
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G6
NE2
NE2

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Montauk, Montauk Airport, NY10 mi73 minENE 8 G 16 mi55°F55°F100%1004.3 hPa
Groton / New London, Groton / New London Airport, CT23 mi71 minE 122.00 miLight Rain Fog/Mist60°F57°F90%1003.8 hPa

Wind History from MTP (wind in knots)
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Last 24hrE6
G15
E8E8CalmE5E54E4NE5E5E6E6E8E7E7
G14
E9
G19
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G19
E10
G23
E9
G20
E13
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1 day ago44Calm--SW4CalmCalmCalmCalmCalmCalmCalmCalmE4NE4NE5E4E7NE65E8
G16
E9
G15
E7E7
2 days ago5SE7SE66S5--5SW4CalmCalm3NW6--N4N4N5NW6NW5N6N43W3S44

Tide / Current Tables for Promised Land, Napeague Bay, Long Island Sound, New York
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Promised Land
Click for Map
Thu -- 03:39 AM EDT     -0.36 feet Low Tide
Thu -- 05:22 AM EDT     Sunrise
Thu -- 05:31 AM EDT     Moonrise
Thu -- 09:21 AM EDT     2.68 feet High Tide
Thu -- 03:42 PM EDT     -0.08 feet Low Tide
Thu -- 03:46 PM EDT     New Moon
Thu -- 07:58 PM EDT     Moonset
Thu -- 08:08 PM EDT     Sunset
Thu -- 09:38 PM EDT     3.49 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.70.90.2-0.2-0.30.10.91.72.32.72.62.21.610.40-0.10.41.22.22.93.43.53.1

Tide / Current Tables for The Race, Long Island Sound, New York Current
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The Race
Click for Map
Thu -- 02:25 AM EDT     -4.28 knots Max Ebb
Thu -- 05:21 AM EDT     Sunrise
Thu -- 05:31 AM EDT     Moonrise
Thu -- 05:42 AM EDT     0.00 knots Slack
Thu -- 08:33 AM EDT     3.62 knots Max Flood
Thu -- 11:49 AM EDT     -0.00 knots Slack
Thu -- 02:47 PM EDT     -3.76 knots Max Ebb
Thu -- 03:46 PM EDT     New Moon
Thu -- 05:51 PM EDT     0.01 knots Slack
Thu -- 07:58 PM EDT     Moonset
Thu -- 08:09 PM EDT     Sunset
Thu -- 08:49 PM EDT     3.87 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.5-3.2-4.2-4.1-3-1.40.62.33.53.52.71.4-0.3-2.1-3.4-3.7-3-1.50.32.13.53.93.21.9

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 (16,3,4,5)
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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.