Sunday, August20, 2017 L-36.com


Marine Weather and Tides
Stony Brook, 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 6:07AMSunset 7:44PM Sunday August 20, 2017 3:56 AM EDT (07:56 UTC) Moonrise 4:41AMMoonset 7:07PM Illumination 4% Phase: Waning Crescent; Moon at 28 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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ANZ335 Long Island Sound West Of New Haven Ct/port Jefferson Ny- 321 Am Edt Sun Aug 20 2017
Today..W winds around 10 kt. Seas 1 ft or less.
Tonight..NW winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas 1 ft or less.
Mon..W winds around 5 kt, becoming sw in the afternoon. Seas 1 ft or less.
Mon night..SW winds 5 to 10 kt. Seas 1 ft or less.
Tue..SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 ft or less...then 1 to 2 ft in the afternoon.
Tue night..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 1 to 2 ft. Chance of showers and tstms.
Wed..W winds 5 to 10 kt. Seas 1 ft or less. Chance of showers and tstms.
Wed night..NW winds 5 to 10 kt. Seas 1 ft or less.
Thu..NW winds 5 to 10 kt. Seas 1 ft or less.
Thu night..N winds 5 to 10 kt. Seas 1 ft or less. Winds and seas higher in and near tstms.
ANZ300 321 Am Edt Sun Aug 20 2017
Synopsis for the long island waters and new york harbor.. High pressure will build into the region today, and then settle to the south and east Monday through Tuesday. A frontal system approaches Tuesday night and crosses the region Wednesday. Canadian high pressure then builds in through Saturday.

7 Day Forecast for Marine Location Near Stony Brook, NY
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location: 40.92, -73.15     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 200733
afdokx
area forecast discussion
national weather service new york ny
333 am edt Sun aug 20 2017

Synopsis
High pressure will build into the region today, and then
settles to the south and east Monday through Tuesday. A frontal
system approaches Tuesday night and crosses the region
Wednesday. Canadian high pressure then builds in through
Saturday.

Near term until 6 pm this evening
Vigorous shortwave pivots northeast of the region this morning
with associated cold front pushing well offshore. In it wake,
zonal upper flow develops with high pressure building in from
the west.

Deep NW flow and subsidence will result in a sunny, comfortably dry,
and seasonably warm day today. Highs generally in the lower to
mid 80s. Late day sea breeze possible along the immediate coast.

There is a moderate risk for rip current development for E li
beaches due to lingering 3 ft @ 6-7 sec swells.

Short term 6 pm this evening through Tuesday
Zonal upper flow continues into mon, and then begins to back a bit
Tuesday ahead of a longwave trough digging into the great lakes.

At the surface... High pressure gradually translates to the south and
southeast tonight into Monday morning. Good radiational cooling
conds tonight, with lows in the 50s across far outlying areas. 60s
to around 70 elsewhere.

As the high builds south and east, heat and humidity will build into
the region Monday into Tuesday. Highs will generally be well into
the 80s to around 90 on Monday, and upper 80s to lower 90s for
Tuesday. Low prob of heat advisory for portions of the nyc nj metro
on Tuesday as humidity levels climb.

Models are indicating potential for isolated diurnal convection
(along sea breeze boundary or hills) on Tuesday as instability
increases and convectively induced vort energy rotates around the
upper ridge. Low predictability on convective details at this
point.

Long term Tuesday night through Saturday
Longwave trough digs into the great lakes Tue into Tue night and
then slides into the NE us for the mid to late week. An associated
frontal system interacting with a sub-tropical airmass will bring
the next chance for organized shower and TSTM activity Tue night
into wed. Low predictability on the convective details at this
point... Contingent on timing of front forcing with diurnal
instability.

Then a significant cool down expected for the end of the week as the
long wave trough settles into the NE us, and canadian high pressure
slowly builds SE from central canada through the midweek. This
will provide mostly sunny, dry and unseasonably cool conditions to
end the week into the weekend.

Aviation 08z Sunday through Thursday
Following a weak cold frontal passage, high pressure will build
in for the remainder of the TAF period.

Vfr through the TAF period. Winds will be near 10 kt or less.

Flow becomes more NW into this morning and then w-sw in the
afternoon with the more SW flow at coastal terminals,
particularly kjfk. Flow generally becomes more NW tonight.

Outlook for 06z Monday through Thursday
Late tonight-Tuesday morning Vfr. SW gusts to near 20kt
Monday late afternoon to early evening.

Tuesday afternoon-Wednesday A chance of showers and
thunderstorms with MVFR or lower conditions possible. SW gusts
20-25kt Tuesday afternoon through Tuesday night.

Wednesday night-Thursday Vfr.

Marine
Sub-sca conditions expected through Tuesday afternoon as high
pressure traverses southeast through the waters.

Winds and seas will increase ahead of a cold frontal Tuesday
into Tuesday night. Marginal SCA gusts possible Tue aft tue
night with ocean seas building to SCA levels Tue night wed.

In the wake of the front, winds and seas are expected to fall
below SCA levels for late week as high pressure slowly builds
towards the area.

Hydrology
Dry conditions through Monday.

Hydrologic impacts from potential showers and thunderstorms
Tuesday into Wednesday are uncertain at this point.

Okx watches warnings advisories
Ct... None.

Ny... None.

Nj... None.

Marine... None.

Synopsis... Nv
near term... Nv
short term... Nv
long term... Maloit nv
aviation... Jm
marine... Nv
hydrology... Nv


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44069 16 mi57 min W 12 G 16 78°F 78°F71°F
BRHC3 - 8467150 - Bridgeport, CT 18 mi45 min WSW 2.9 G 6 73°F 76°F1011.7 hPa
NWHC3 - 8465705 - New Haven, CT 28 mi39 min W 1.9 G 2.9 73°F 78°F1012 hPa
KPTN6 - 8516945 - Kings Point, NY 33 mi39 min NNW 12 G 15 75°F 74°F1012.8 hPa
44025 - LONG ISLAND 33 NM South of Islip, NY 46 mi67 min W 12 G 16 76°F 75°F3 ft1012.8 hPa (+0.0)69°F
BATN6 - 8518750 - The Battery, NY 48 mi39 min 73°F 75°F1013.2 hPa
44065 - Entrance to New York Harbor 48 mi67 min W 16 G 18 75°F 76°F3 ft1012.2 hPa (+0.4)65°F

Wind History for Bridgeport, CT
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Islip, Long Island Mac Arthur Airport, NY9 mi61 minW 510.00 miFair73°F69°F87%1011.9 hPa
Shirley, Brookhaven Airport, NY17 mi61 minW 510.00 miFair74°F70°F88%1012.1 hPa
Bridgeport, Sikorsky Memorial Airport, CT18 mi65 minW 410.00 miFair73°F66°F79%1012 hPa
Farmingdale - Republic Airport, NY19 mi64 minWNW 410.00 miFair73°F66°F79%1012.4 hPa

Wind History from ISP (wind in knots)
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Last 24hrCalmSW4SW4CalmNW5NW65CalmSW6S11SW11SW12SW9SW10SW11SW9SW7SW6SW4W4CalmS6SW6W5
1 day agoS5S6SE7S8S12S9SE10SW10
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2 days agoN6N6N4NE4E66SE7SE6S8SE11S8SE6S8SE9S7S6SE7S7SE6SE5S7S6SE8S7

Tide / Current Tables for Stony Brook, Smithtown Bay, Long Island Sound, New York
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Stony Brook
Click for Map
Sun -- 04:41 AM EDT     Moonrise
Sun -- 04:43 AM EDT     -0.44 feet Low Tide
Sun -- 06:07 AM EDT     Sunrise
Sun -- 10:48 AM EDT     6.57 feet High Tide
Sun -- 05:01 PM EDT     -0.21 feet Low Tide
Sun -- 07:06 PM EDT     Moonset
Sun -- 07:43 PM EDT     Sunset
Sun -- 11:09 PM EDT     7.19 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.84.22.50.9-0.2-0.40.31.83.55.16.36.55.94.73.11.50.3-0.20.31.63.35.16.57.2

Tide / Current Tables for Cedar Beach, Long Island, New York
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Cedar Beach
Click for Map
Sun -- 04:40 AM EDT     Moonrise
Sun -- 04:43 AM EDT     -0.41 feet Low Tide
Sun -- 06:07 AM EDT     Sunrise
Sun -- 10:47 AM EDT     7.18 feet High Tide
Sun -- 04:57 PM EDT     -0.17 feet Low Tide
Sun -- 07:05 PM EDT     Moonset
Sun -- 07:43 PM EDT     Sunset
Sun -- 11:08 PM EDT     7.85 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.34.62.81.1-0.1-0.40.423.85.66.87.26.453.31.60.3-0.20.41.93.85.77.27.8

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 (3,6,7,8)
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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.