Sunday, May20, 2018 L-36.com


Marine Weather and Tides
Larchmont, NY

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:30AMSunset 8:12PM Sunday May 20, 2018 5:49 PM EDT (21:49 UTC) Moonrise 10:44AMMoonset 12:34AM Illumination 35% Phase: Waxing Crescent; Moon at 6 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- 325 Pm Edt Sun May 20 2018
Tonight..NW winds 5 to 10 kt. Seas 1 ft or less. Chance of showers and slight chance of tstms early this evening.
Mon..N winds around 5 kt, becoming W in the afternoon. Seas 1 ft or less.
Mon night..SW winds around 5 kt. Seas 1 ft or less. Chance of rain after midnight.
Tue..SE winds 5 to 10 kt. Seas 1 ft or less. Chance of rain.
Tue night..S winds 5 to 10 kt, becoming sw after midnight. Seas 1 ft or less. Chance of showers in the evening.
Wed..W winds 5 to 10 kt. Seas 1 ft or less.
Wed night..NW winds 5 to 10 kt. Seas 1 ft or less.
Thu..NW winds around 5 kt, becoming W in the afternoon. Seas 1 ft or less.
Thu night..SW winds 5 to 10 kt. Seas 1 ft or less.
Fri..W winds 5 to 10 kt. Seas 1 ft or less.
Fri night..SW winds 5 to 10 kt. Seas 1 ft or less. Winds and seas higher in and near tstms.
ANZ300 325 Pm Edt Sun May 20 2018
Synopsis for the long island waters and new york harbor.. High pressure builds across the area waters tonight and into Monday. A weak frontal system will affect the area from late Monday night into Wednesday. High pressure returns Thursday and remains across the area waters through Friday.

7 Day Forecast for Marine Location Near Larchmont, NY
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location: 40.89, -73.75     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 201939
afdokx
area forecast discussion
national weather service new york ny
339 pm edt Sun may 20 2018

Synopsis
High pressure builds behind a cold front tonight and into Monday.

A weak frontal system affects the area from late Monday night
into Wednesday. High pressure returns Thursday and remains
through Saturday. The next weather system will move across the
region on Sunday.

Near term until 6 am Monday morning
Sct showers and iso tstms developing along a cold front will
push east through late this afternoon. With marginally strong
deep layer shear, a conditional isolated strong thunderstorm
with strong wind gust is possible. Expectation is for
convection to weaken as it moves eastward towards the coast in
the late aft eve due to maritime influence. Clearing conditions
expected tonight as high pressure builds across the region.

Temperatures tonight will be in the low to mid 50s.

Short term 6 am Monday morning through Monday night
Sunny conditions Monday as high pressure builds across the region
with a weak frontal system impacting the area late Monday night.

This will result in some precipitation across the region with
light QPF values. Highs on Monday will generally be in the mid
to upper 70s, except lower 70s across south coasts with
afternoon seabreeze development. Temperatures Monday night will
be in the mid to upper 50s.

Long term Tuesday through Sunday
A weak frontal system will impacting the area Tuesday through
early Wednesday. There are some small timing differences with
the global models with both the onset of warm advection rain and
the possibility of scattered convection lingering into
Wednesday as the airmass change behind a cold front is subtle.

This does not look to be a significant rainfall event.

Additionally, while the westerlies and an upper trough will
remain across the area through midweek, the instability at this
time looks to be only marginal.

High pressure builds across the area on Thursday and remains through
Saturday, resulting in dry weather with above normal temperatures. A
frontal system is then forecast to impact the region Saturday night
into Sunday. Highs on Sunday will be in the low to mid 70s.

Aviation 20z Sunday through Friday
A cold front passes through the terminals 22-00z today.

Vfr through the TAF period. Brief MVFR conds in an iso sct
shower still possible before 22-00z and and iso TSTM is possible
before this time as well. W winds 10-15 kt with gusts up to
around 20 kt becomes NW behind the cold front with winds
diminishing tonight.

Outlook for 18z Monday through Friday
Monday pm Vfr with light S winds.

Tuesday Vfr am, -shra MVFR pm with low chc tstm.

Wednesday Chc -shra MVFR early, thenVFR.

Thurs-fri Vfr.

Marine
Marginal SCA conditions are expected across the coastal ocean
waters into tonight, with sub small craft conditions expected
elsewhere. A weak gradient is expected through the week, keeping all
waters below small craft advisory levels.

Hydrology
No widespread significant hydrologic issues are anticipated
through the next 7 days.

Okx watches warnings advisories
Ct... None.

Ny... None.

Nj... None.

Marine... Small craft advisory until 11 pm edt this evening for anz350-
353-355.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KPTN6 - 8516945 - Kings Point, NY 6 mi49 min N 13 G 15 71°F 56°F1014.3 hPa (-0.0)
BATN6 - 8518750 - The Battery, NY 19 mi49 min 78°F 58°F1014 hPa (+0.0)
ROBN4 - 8530973 - Robins Reef, NJ 23 mi49 min WNW 16 G 19 80°F 1013.8 hPa (+0.0)
BGNN4 - 8519483 - Bergen Point West Reach, NJ 27 mi49 min 79°F 61°F1013.6 hPa (+0.0)
MHRN6 28 mi49 min WNW 20 G 22
SDHN4 - 8531680 - Sandy Hook, NJ 32 mi49 min W 8.9 G 9.9 71°F 61°F1014.7 hPa (+0.0)
BRHC3 - 8467150 - Bridgeport, CT 36 mi55 min WNW 5.1 G 13 79°F 54°F1012.1 hPa
44065 - Entrance to New York Harbor 36 mi39 min S 5.8 G 7.8 62°F 54°F1013.7 hPa59°F

Wind History for Kings Point, NY
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
New York, La Guardia Airport, NY10 mi58 minNW 14 G 1910.00 miMostly Cloudy78°F60°F54%1012.9 hPa
White Plains - Westchester County Airport, NY13 mi1.9 hrsWNW 610.00 miMostly Cloudy74°F66°F76%1013.1 hPa
New York City, Central Park, NY14 mi58 minNW 810.00 miOvercast79°F61°F54%1013.4 hPa
New York, Kennedy International Airport, NY16 mi58 minW 1410.00 miMostly Cloudy82°F64°F55%1013.2 hPa
Teterboro, Teterboro Airport, NJ16 mi58 minNW 1110.00 miOvercast79°F63°F58%1013.1 hPa
Farmingdale - Republic Airport, NY21 mi56 minWNW 10 G 2010.00 miMostly Cloudy82°F62°F51%1012.9 hPa

Wind History from LGA (wind in knots)
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Last 24hrNE8NE8NE6NE4E6NE4N3E4CalmE3N3E4CalmS6S7SW9SW7SW10W9W13
G24
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W12NW14
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1 day agoNE11NE9
G19
NE10E10E14NE9NE10NE9NE13NE14NE14NE14NE12E10E8NE10NE11NE11NE11NE11NE10NE9NE8NE9
2 days agoSW55S6S63CalmCalmCalmS3CalmNE6E4NE6NE14NE12NE16
G21
NE17
G22
E15NE16
G21
NE16E15NE14E14NE12

Tide / Current Tables for Execution Rocks, Long Island Sound, New York
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Execution Rocks
Click for Map
Sun -- 12:33 AM EDT     Moonset
Sun -- 03:25 AM EDT     8.12 feet High Tide
Sun -- 05:33 AM EDT     Sunrise
Sun -- 10:43 AM EDT     -0.12 feet Low Tide
Sun -- 10:44 AM EDT     Moonrise
Sun -- 04:23 PM EDT     7.40 feet High Tide
Sun -- 08:10 PM EDT     Sunset
Sun -- 11:02 PM EDT     0.70 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.44.76.9887.46.34.320.60-0.10.62.54.96.77.47.36.85.43.31.70.90.7

Tide / Current Tables for Throg's Neck, Long Island Sound, New York Current
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Throg's Neck
Click for Map
Sun -- 12:33 AM EDT     Moonset
Sun -- 01:02 AM EDT     -0.00 knots Slack
Sun -- 04:33 AM EDT     -0.74 knots Max Ebb
Sun -- 05:33 AM EDT     Sunrise
Sun -- 07:13 AM EDT     0.00 knots Slack
Sun -- 10:45 AM EDT     Moonrise
Sun -- 10:50 AM EDT     1.01 knots Max Flood
Sun -- 01:25 PM EDT     -0.00 knots Slack
Sun -- 05:01 PM EDT     -0.76 knots Max Ebb
Sun -- 07:46 PM EDT     0.00 knots Slack
Sun -- 08:10 PM EDT     Sunset
Sun -- 11:17 PM EDT     1.03 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40-0.2-0.5-0.7-0.7-0.5-0.10.10.40.810.60.1-0.1-0.4-0.6-0.8-0.6-0.300.20.61

Weather Map and Satellite Images
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wmap_A
GOES Local Image of Northeast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for New York City/Upton, NY (17,4,5,8)
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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.