Saturday, December14, 2019
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Marine Weather and Tides
Nyack, NY

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:11AMSunset 4:28PM Saturday December 14, 2019 9:59 PM EST (02:59 UTC) Moonrise 8:00PMMoonset 10:26AM Illumination 88% Phase: Waning Gibbous; Moon at 18 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- 713 Pm Est Sat Dec 14 2019
.gale warning in effect through Sunday afternoon...
Tonight..W winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to 4 ft. Patchy drizzle early this evening. Patchy fog early this evening with vsby 1 to 3 nm.
Sun..W winds around 20 kt with gusts up to 35 kt. Seas around 4 ft.
Sun night..W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft.
Mon..W winds 5 to 10 kt. Seas 1 ft or less. Snow likely in the afternoon with vsby 1 to 3 nm.
Mon night..E winds 5 to 10 kt. Seas 1 ft or less. Snow, sleet and freezing rain in the evening. Rain. Vsby 1 to 3 nm.
Tue..NE winds around 10 kt, becoming N in the afternoon. Seas 1 ft or less. Rain.
Tue night..NW winds 10 to 15 kt with gusts up to 20 kt. Seas 1 ft or less.
Wed..W winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas around 2 ft.
Wed night..NW winds 15 to 20 kt. Seas 2 to 3 ft.
Thu..NW winds 10 to 15 kt. Seas around 2 ft in the morning, then 1 ft or less.
Thu night..NW winds 10 to 15 kt. Seas 1 ft or less.
ANZ300 713 Pm Est Sat Dec 14 2019
Synopsis for the long island waters and new york harbor.. High pressure builds in tonight behind a storm departing to the north, and lasts over the region through Sunday night. A low pressure system will then impact the waters Monday through Tuesday. High pressure returns for Wednesday and Thursday, but with a cold front moving through Wednesday night.


7 Day Forecast for Marine Location Near Nyack, NY
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location: 41.1, -73.91     debug


Area Discussion for - New York City/Upton, NY
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FXUS61 KOKX 150107 AFDOKX

Area Forecast Discussion National Weather Service New York NY 807 PM EST Sat Dec 14 2019

SYNOPSIS. High pressure builds in tonight behind a storm departing to the north, and lasts over the region through Sunday night. A low pressure system impacts the region Monday through Tuesday, then departs to the northeast Tuesday night. High pressure builds into the region on Wednesday and remains over the area through the end of the week.

NEAR TERM /UNTIL 6 AM SUNDAY MORNING/. Dewpoints and temperatures were slightly changed to better match observed trends. Otherwise, forecast is on track.

Low pressure will continue to move farther north of the forecast area tonight. Drier air behind an associated frontal boundary is advecting on a gusty west flow tonight, with leftover patchy drizzle and patchy light fog for Eastern Long Island and Southeast Connecticut. Otherwise, expecting mainly dry conditions and gusty west flow which will continue overnight.

SHORT TERM /6 AM SUNDAY MORNING THROUGH SUNDAY NIGHT/. High pressure slowly builds into the region Sunday. Continued breezy with high temperatures a couple of degrees above normal courtesy of a downsloping wind flow. As for PCPN, will go with a dry forecast, but might eventually need to add in sprinkles north and west of the city as shortwave lift interacts with some moisture arriving from the Great Lakes.

The ridge of high pressure reaches us late at night Sunday with winds becoming lighter. Dry weather continues through the period.

LONG TERM /MONDAY THROUGH SATURDAY/. . STORM SYSTEM MONDAY THROUGH TUESDAY NIGHT .

A low pressure system will be the focus of this time period. Central low develops Mississippi River Valley towards Tennessee Monday and will be deepening with an associated warm front moving into the local region.

Monday afternoon into Monday evening, the region receives warm air advection aloft, isentropic lift, and widespread stratiform precipitation. 850mb freezing line moves north of Long Island and perhaps some of the interior Monday evening and eventually north of the entire region by Tuesday morning. Onset of precip and first few hours, p-type likely will be snow, then a gradual changeover to a wintry mix and then to rain slowly from south to north.

For Tuesday, the central low tracks directly across the local region. Precipitation continues through the day and tapers off behind the low late Tuesday afternoon into the start of Tuesday evening. For p-type, expecting all rain for coastal areas and a wintry mix for the interior. For a part of the day, the interior changes over to plain rain. Precipitation tapers off late.

The low will be well east of the area, to North Atlantic waters offshore of Cape Cod by Tuesday night. Drying conditions are expected Tuesday night as the low deepens and accelerates northeast to eventually southeast of Nova Scotia by early Wednesday.

For specifics, CONSRaw heavily utilized with temperatures, and dewpoints. More of an overall consensus weight used for Monday with temperatures and dewpoints. Temperatures will easily get to their wet bulb values once steady precip moves in Monday. Lowered ambient temperatures 1-2 degrees late Monday afternoon through Monday evening. Most snow accumulations will be Monday afternoon through Monday night, particularly between around 3pm and around 8pm for much of the coast when wet bulb temperatures will be below freezing. NYC and Long Island above freezing thereafter with slowly rising temperatures thereafter into early Tuesday. Forecast dewpoints are above freezing along the coast and NYC overnight through Tuesday. Mostly snow for interior from around 3pm Monday until around midnight. Thereafter it is wintry mix interior to rain at coast. Overall, forecast has a 1-4 inch snow event, with around a tenth of an inch of ice across interior.

Upper level dynamics with this event convey an approaching longwave trough with a SW to NE jet streak Monday into Monday night. Upper level jet max moves across the local area Tuesday into Tuesday night. The upper level jet appears from the forecast models to be southerly dominant with not much phasing apparent in the mid levels. The associated parent low at the surface deepens about 10 mb from Monday afternoon into Tuesday evening.

For the rest of the long term, high pressure starts to build back into the region on Wednesday and will remain over the area through the end of the week. Expect dry conditions with temperatures below normal. Low pressure may impact the area over the weekend.

AVIATION /01Z SUNDAY THROUGH THURSDAY/. Low pressure to the north will continue pulling away through Sunday. Main concern will be gusty SW-W winds, sustained 15-25kt with gusts 25-35kt, strongest late Sunday morning and Sunday afternoon. Otherwise, IFR cigs at KISP/KGON should lift to MVFR later this evening, then MVFR cigs extending back into all of NJ and adjacent eastern PA should lift to VFR overnight. OUTLOOK FOR 00Z MONDAY THROUGH THURSDAY. Sunday night. VFR with diminishing WNW winds. Monday. Snow with IFR conds becoming likely, mainly in the afternoon and especially for the NYC metros/KHPN/KISP. Monday night. For the NYC metros and coastal terminals, mixed precip should gradually change to rain. For KHPN/KSWF, mixed wintry precip including sleet/freezing rain should change to rain late at KHPN. IFR possible. Tuesday. Mixed wintry precip including sleet/freezing rain at KSWF should change rain. Rain elsewhere. IFR conds, possibly improving to MVFR in the afternoon. Tuesday night. VFR. NW winds G20kt NYC metros/KISP mainly eve. Wednesday. VFR. NW winds G25kt mainly afternoon. Thursday. VFR.

MARINE. Winds pick up from the SW, then W tonight with a Gale Warning remaining on all waters. Gales should last through Sunday, and have extended the warning for the ocean, and eastern LI Sound/Bays into a portion of the evening. Winds then subside overnight Sunday with sub-advisory conds on all waters except on the ocean east of Fire Island Inlet.

Conditions on the waters are below SCA Monday through very early Tuesday. Late Tuesday morning through Tuesday night, SCA conditions will become more probable across the ocean while non-ocean waters remain below SCA. SCA conditions are expected Wednesday and Thursday as winds and seas remain elevated.

HYDROLOGY. Any additional rain accumulation into this evening will be very light. The only remaining flooding concerns are for the larger stem rivers in CT where levels continue to gradually rise into this evening due to a combination of the recent rainfall and melting snow to the north.

Another significant rainfall event is possible Monday through Tuesday, with liquid equivalent QPF of 0.5 to 1.25 inches possible. There is uncertainty in this amount given uncertainty in the track of the low and frontal positions.

EQUIPMENT. NYC NOAA Weather Radio Station KWO35 (162.55 MHz) is still operating at reduced power.

OKX WATCHES/WARNINGS/ADVISORIES. CT . None. NY . None. NJ . None. MARINE . Gale Warning until 6 PM EST Sunday for ANZ335-338-345. Gale Warning until 10 PM EST Sunday for ANZ330-340-350-353-355.

SYNOPSIS . JC/JM NEAR TERM . JC/JM SHORT TERM . JC LONG TERM . BC/JM AVIATION . Goodman MARINE . JC/JM HYDROLOGY . JC/JM EQUIPMENT .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44022 - Execution Rocks 18 mi45 min WSW 19 G 29 48°F 32°F41°F
44040 - Western Long Island Sound 20 mi70 min WSW 21 G 31 49°F 3 ft42°F
KPTN6 - 8516945 - Kings Point, NY 21 mi60 min WNW 18 G 25 49°F 44°F992.6 hPa (+3.3)
BATN6 - 8518750 - The Battery, NY 28 mi60 min 47°F 46°F993.2 hPa (+3.5)
ROBN4 - 8530973 - Robins Reef, NJ 32 mi60 min W 26 G 29 49°F 992.7 hPa (+3.4)
BGNN4 - 8519483 - Bergen Point West Reach, NJ 34 mi60 min 48°F 45°F993.2 hPa (+3.4)
MHRN6 34 mi60 min WSW 17 G 31
BRHC3 - 8467150 - Bridgeport, CT 39 mi66 min WSW 15 G 22 51°F 44°F989.8 hPa
SDHN4 - 8531680 - Sandy Hook, NJ 44 mi60 min W 21 G 30 47°F 45°F993.6 hPa (+3.5)

Wind History for Kings Point, NY
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
White Plains - Westchester County Airport, NY10 mi2.1 hrsWSW 13 G 2110.00 miOvercast50°F42°F74%990.1 hPa
Teterboro, Teterboro Airport, NJ18 mi69 minWSW 14 G 2510.00 miOvercast49°F39°F71%992.4 hPa
New York, La Guardia Airport, NY22 mi69 minWSW 11 G 2410.00 miOvercast50°F39°F66%992.3 hPa
New York City, Central Park, NY22 mi69 minWSW 12 G 2210.00 miOvercast49°F39°F69%992.3 hPa

Link to 5 minute data for KHPN

Wind History from HPN (wind in knots)
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1 day agoSE3CalmCalmCalmCalmNE3E5E6E5E6E4E5E6E6E6E5E5E5E5E6E8E9E4E8
2 days agoW11
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W6W8NW14NW10NW10W7W7NW11NW10N9NW5N55N6NW3SE3S4CalmCalmSE3CalmSE3

Tide / Current Tables for Tarrytown, Hudson River, New York
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Tarrytown
Click for Map
Sat -- 05:16 AM EST     -0.03 feet Low Tide
Sat -- 07:12 AM EST     Sunrise
Sat -- 09:25 AM EST     Moonset
Sat -- 10:55 AM EST     3.73 feet High Tide
Sat -- 04:27 PM EST     Sunset
Sat -- 06:05 PM EST     -0.18 feet Low Tide
Sat -- 06:59 PM EST     Moonrise
Sat -- 11:48 PM EST     2.97 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.82.41.60.80.3-00.10.9233.63.73.63.12.31.40.60.1-0.20.10.91.82.52.9

Tide / Current Tables for Haverstraw (Hudson River), New York Current
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Haverstraw (Hudson River)
Click for Map
Sat -- 01:45 AM EST     -0.00 knots Slack
Sat -- 05:26 AM EST     -1.25 knots Max Ebb
Sat -- 07:13 AM EST     Sunrise
Sat -- 08:50 AM EST     0.00 knots Slack
Sat -- 09:26 AM EST     Moonset
Sat -- 11:16 AM EST     1.10 knots Max Flood
Sat -- 02:23 PM EST     -0.00 knots Slack
Sat -- 04:27 PM EST     Sunset
Sat -- 06:03 PM EST     -1.45 knots Max Ebb
Sat -- 06:59 PM EST     Moonrise
Sat -- 09:51 PM EST     0.00 knots Slack
Sat -- 11:47 PM EST     0.76 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.3-0.1-0.7-1-1.2-1.2-0.9-0.40.10.71.110.70.2-0.4-0.9-1.3-1.4-1.3-0.9-0.50.10.6

Weather Map
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wmap_A
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for New York City/Upton, NY (21,6,7,8)
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Ground Weather Radar Station Upton, NY
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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.