Saturday, May27, 2017 L-36.com


Marine Weather and Tides
New York, 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 5:27AMSunset 8:18PM Saturday May 27, 2017 7:52 AM EDT (11:52 UTC) Moonrise 7:26AMMoonset 10:21PM Illumination 4% Phase: Waxing Crescent; Moon at 2 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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ANZ338 NEw York Harbor- 633 Am Edt Sat May 27 2017
Today..NW winds 5 to 10 kt...becoming S late. Waves 1 ft or less. Slight chance of showers late.
Tonight..SE winds 5 to 10 kt. Waves 1 ft or less. Patchy drizzle after midnight.
Sun..SE winds 5 to 10 kt. Waves 1 ft or less. Patchy drizzle in the morning.
Sun night..SE winds 10 to 15 kt. Waves 1 to 2 ft. Chance of light rain after midnight.
Mon..SE winds 10 to 15 kt...diminishing to 5 to 10 kt in the afternoon. Waves 1 to 2 ft in the morning...then 1 ft or less. Showers likely. Chance of tstms in the afternoon.
Mon night..NE winds around 5 kt. Waves 1 ft or less.
Tue..E winds around 5 kt...becoming sw. Waves 1 ft or less. Chance of showers at night.
Wed..W winds around 5 kt...becoming 5 to 10 kt. Waves 1 ft or less. Winds and waves higher in and near tstms.
ANZ300 633 Am Edt Sat May 27 2017
Synopsis for long island waters and new york harbor.. Multiple weak waves of low pressure will pass to the south through Monday...as high pressure gradually builds down from southeastern canada. This high will retreat to the northeast Monday night...followed by a series of weak fronts moving across from Tuesday through Wednesday.

7 Day Forecast for Marine Location Near New York, NY
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location: 40.55, -73.89     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 271029
afdokx
area forecast discussion
national weather service new york ny
629 am edt Sat may 27 2017

Synopsis
Multiple weak waves of low pressure pass to the south through
Monday, as high pressure gradually builds down from southeastern
canada. This high retreats to the northeast Monday night. A
series of weak fronts or troughs of low pressure cross the area
Tuesday through Thursday. Weak high pressure then builds in
through Friday, as a front stalls to the south of long island.

Near term until 6 pm this evening
Made minor changes this update to reflect the latest trends in
observations and guidance. The forecast appears on track.

Hi-res models indicate that a convective complex currently over
ohio passes just to the SW S of the area this afternoon
(consistent with trajectory of mean 850-500 hpa flow). Do have
slight chance pops over the SW 1 5 of the CWA late this
afternoon in case convection strays a bit farther to the NE than
currently progged, but would not be surprised if entire area
stayed dry today as northern stream shortwave ridging builds to
the north.

Highs today should be near normal, with some Sun expected this
afternoon, leaned towards warm edge of guidance.

Short term 6 pm this evening through 6 pm Sunday
Northern stream 850-500 hpa ridging builds in tonight, as
onshore flow sets up below 900 hpa. Could end up seeing some
patchy drizzle late tonight into early Sunday morning as a
result. Lows tonight should be a few degrees above normal.

The aforementioned ridge axis transits over the area Sunday,
with moisture trapped under the subsidence inversion making for
a mostly cloudy day. Given expected cloud cover and onshore
flow, did cut back on highs to around 5-10 degrees below normal.

This was based on blending NAM ecwmf 2-meter temperatures in
with met ecs guidance and a mix down from 975-925 hpa per bufkit
soundings.

Long term Sunday night through Friday
The northern stream ridge slides offshore Sunday night, allowing
for light rain to overspread most of the area with some modest
isentropic ascent (could remain dry over far eastern portions).

A northern stream shortwave rotates across the area around the
base of a closed low over ontario northern great lakes Monday.

Even with onshore flow, showalter indices are progged down to -2
to -4 by afternoon in response to fairly steep mid-upper level
lapse rates, have opted for showers, with a chance of
thunderstorms by afternoon. Given showalter indices cannot rule
out some locally strong storms and cannot 100% rule out a
severe cell or two. The main threat would be large hail - with
wet bulb zero heights progged at 8-9 thousand feet late Monday
afternoon early Monday evening. The marine inversion likely will
prevent any gusts to severe levels.

The showers with embedded thunderstorms should come to an end
from SW to NE Monday night as the shortwave trough exits to the
ne.

The closed upper low and longwave trough will be slow to move
east through the middle to late part of next week as a series
of shortwaves rotate through the trough, while at the surface
weak lows, or troughs move through the area. There remains a lot
of uncertainty with the timing and placement of the systems
through the upcoming week. As a result, there could be a
prolonged period of unsettled weather. Will carry slight chance
to low chance probabilities through Thursday, highest over
northern zones, closest to the closed low any shortwaves
rotating around it. For now have gone with a dry forecast
Thursday night and Friday as the main axis of the opening
closed low is progged to lift to the northeast.

Aviation 12z Saturday through Wednesday
MainlyVFR through the TAF period, but there could be a brief
period of 030-035 CIGS from about 15z-18z give or take an hour
today. There will also be a slight chance of showers for the
nyc metro terminals from about 20z-23z as a weakening
disturbance passes just south.

Nw winds will diminish into this morning. Sea breezes should
develop along the coast this afternoon, reaching
klga kewr kteb khpn late this afternoon, after about 20z. Some
guidance is indicating potential for an ene rather than s
breeze to develop at klga, so will have to watch for this
potential.

Outlook for 06z Sunday through Wednesday
Late tonight MVFR CIGS developing with some patchy drizzle.

Chance of ifr CIGS toward daybreak at khpn kisp.

Sunday MVFR and any local ifr CIGS gradually improving toVFR
by afternoon.

Sunday night Vfr, but with chance of light rain late.

Monday MVFR conds likely and ifr conds possible. Showers
likely and chance of tstms.

Monday night Conds improving toVFR by late evening.

Tuesday-Wednesday MainlyVFR. Chance of showers tstms mainly
nw of the nyc metro terminals.

Marine
Seas at 44017 have fallen to 4.3 ft, therefore have cancelled
the SCA for hazardous seas for anz-350. Otherwise, only minor
changes were made with this update to reflect the latest trends
in observations and guidance.

A relaxed pressure gradient over the waters around long island
will limit winds to around 10 kt or less through Sunday night.

Se winds increasing to 15-20 kt on Mon could lead to ocean seas
reaching 5 ft again Mon afternoon evening. Otherwise, outside
of any tstms on Monday, winds seas on the waters should remain
tranquil.

Hydrology
No significant widespread hydrologic impacts are expected
through at least the middle of next week.

Tides coastal flooding
The combination of high astronomical tides and southerly swell
will keep water levels within striking distance of minor coastal
flood benchmarks for several high tide cycles into early next
week. A coastal flood advisory is in effect for the high tide
cycle tonight for the south shore bays of brooklyn queens nassau,
also for the shores of westchester fairfield along western long
island sound.

Okx watches warnings advisories
Ct... Coastal flood advisory from midnight tonight to 3 am edt
Sunday for ctz009.

Ny... Coastal flood advisory from midnight tonight to 3 am edt
Sunday for nyz071.

Coastal flood advisory from 9 pm this evening to 2 am edt
Sunday for nyz074-075-178-179.

Nj... None.

Marine... None.

Synopsis... Maloit
near term... Maloit
short term... Maloit
long term... Maloit met
aviation... Goodman
marine... Goodman met
hydrology... Maloit met
tides coastal flooding...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SDHN4 - 8531680 - Sandy Hook, NJ 9 mi52 min W 7 G 8 61°F 61°F1010.9 hPa (+1.3)
ROBN4 - 8530973 - Robins Reef, NJ 12 mi52 min W 6 G 7 62°F 1012.1 hPa (+1.2)
BATN6 - 8518750 - The Battery, NY 12 mi52 min 63°F 59°F1011.3 hPa (+1.3)
BGNN4 - 8519483 - Bergen Point West Reach, NJ 15 mi52 min 62°F 60°F1011.7 hPa (+1.4)
MHRN6 16 mi52 min SW 5.1 G 6
44065 - Entrance to New York Harbor 16 mi62 min W 7.8 G 9.7 58°F 57°F3 ft1011.5 hPa (+1.5)56°F
KPTN6 - 8516945 - Kings Point, NY 19 mi52 min NNE 6 G 8.9 61°F 59°F1011.4 hPa (+1.6)
44022 - Execution Rocks 25 mi52 min 61°F 55°F
44040 - Western Long Island Sound 33 mi67 min NW 3.9 G 3.9 58°F 55°F
44025 - LONG ISLAND 33 NM South of Islip, NY 44 mi62 min WNW 5.8 G 5.8 58°F 55°F4 ft1011 hPa (+1.8)
44069 44 mi172 min NW 3.9 G 5.8 59°F 63°F58°F

Wind History for Sandy Hook, NJ
(wind in knots)    EDIT      (on/off)   Help
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E4
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
New York, Kennedy International Airport, NY10 mi61 minNW 910.00 miPartly Cloudy64°F55°F75%1011.7 hPa
New York City, Central Park, NY16 mi61 minVar 410.00 miFair61°F55°F81%1011.5 hPa
New York, La Guardia Airport, NY16 mi61 minNW 710.00 miPartly Cloudy63°F54°F73%1011.3 hPa
Newark, Newark International Airport, NJ19 mi61 minN 010.00 miMostly Cloudy61°F55°F84%1011.6 hPa
Teterboro, Teterboro Airport, NJ23 mi61 minN 010.00 miFair57°F54°F90%1011.2 hPa

Wind History from JFK (wind in knots)
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Last 24hrNW4W7W11W10W10W14W17
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1 day agoE9E11E17
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E7E8NE11E9NE14N10NW11N16NW7NW6NW7N7N7
2 days agoNE8NE6N8N7NE11N12NE10E5S6SE11E9E11E8E12E10E11E11E10E13E11E10
G21
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G19
E12

Tide / Current Tables for Barren Island, Rockaway Inlet, Jamaica Bay, New York
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Barren Island
Click for Map
Sat -- 03:51 AM EDT     -0.90 feet Low Tide
Sat -- 05:29 AM EDT     Sunrise
Sat -- 07:26 AM EDT     Moonrise
Sat -- 09:47 AM EDT     5.80 feet High Tide
Sat -- 03:54 PM EDT     -0.57 feet Low Tide
Sat -- 08:16 PM EDT     Sunset
Sat -- 10:04 PM EDT     6.81 feet High Tide
Sat -- 10:20 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.82.10.6-0.5-0.9-0.21.33.14.65.55.85.13.82.30.9-0.2-0.60.11.63.55.26.46.86.4

Tide / Current Tables for The Narrows, Midchannel, New York Harbor, New York Current
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The Narrows
Click for Map
Sat -- 02:48 AM EDT     -2.71 knots Max Ebb
Sat -- 05:29 AM EDT     Sunrise
Sat -- 06:22 AM EDT     0.00 knots Slack
Sat -- 07:27 AM EDT     Moonrise
Sat -- 08:41 AM EDT     1.97 knots Max Flood
Sat -- 11:45 AM EDT     -0.01 knots Slack
Sat -- 03:01 PM EDT     -2.41 knots Max Ebb
Sat -- 06:19 PM EDT     0.00 knots Slack
Sat -- 08:17 PM EDT     Sunset
Sat -- 09:01 PM EDT     2.48 knots Max Flood
Sat -- 10:21 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.7-1.8-2.5-2.7-2.2-1.5-0.50.81.81.91.60.9-0.3-1.4-2.1-2.4-2.1-1.3-0.30.822.52.21.6

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Mid-Atlantic    EDIT
Geos

Wind Forecast for New York City/Upton, NY (7,2,3,4)
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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.