Saturday, March28, 2020
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Marine Weather and Tides
Great River, NY

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 6:40AMSunset 7:15PM Saturday March 28, 2020 8:38 PM EDT (00:38 UTC) Moonrise 9:00AMMoonset 11:25PM Illumination 24% Phase: Waxing Crescent; Moon at 5 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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ANZ345 South Shore Bays From Jones Inlet Through Shinnecock Bay- 545 Pm Edt Sat Mar 28 2020
.small craft advisory in effect from 10 pm edt this evening through Sunday afternoon...
Tonight..E winds 10 to 15 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 25 kt late this evening and overnight. Waves 1 ft or less, then around 2 ft. Occasional showers early, then occasional rain. Occasional drizzle after midnight. Patchy fog after midnight with vsby 1 to 3 nm.
Sun..E winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Waves around 2 ft in the morning, then 1 ft or less. Occasional drizzle. Occasional rain. Patchy fog in the morning. Areas of fog in the afternoon. Vsby 1 to 3 nm.
Sun night..NE winds 5 to 10 kt, becoming nw after midnight. Waves 1 ft or less. Chance of light rain and drizzle in the evening. Areas of fog. Vsby 1 to 3 nm.
Mon..W winds 5 to 10 kt. Waves 1 ft or less.
Mon night..N winds 5 to 10 kt. Waves 1 ft or less.
Tue..NE winds around 10 kt. Waves 1 ft or less.
Tue night..E winds around 10 kt. Waves 1 ft or less.
Wed..NE winds around 10 kt. Waves 1 ft or less.
Wed night..N winds around 10 kt. Waves 1 ft or less.
Thu..NW winds around 10 kt. Waves 1 ft or less.
Thu night..NW winds around 10 kt. Waves 1 ft or less.
ANZ300 545 Pm Edt Sat Mar 28 2020
Synopsis for the long island waters and new york harbor.. A warm front will continue to approach from the south overnight, stalling just south of long island Sunday morning. Weak low pressure and a trailing cold front will then move across the waters Sunday night. Low pressure over the western great lakes and new england weakens Monday into Tuesday. Another low passes well south and east during the middle of the week, followed by high pressure to close out the week.


7 Day Forecast for Marine Location Near Great River, NY
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location: 40.72, -73.15     debug


Area Discussion for - New York City/Upton, NY
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FXUS61 KOKX 282311 AFDOKX

Area Forecast Discussion National Weather Service New York NY 711 PM EDT Sat Mar 28 2020

SYNOPSIS. A warm front will continue to approach from the south overnight, stalling just south of Long Island Sunday morning. Weak low pressure and a trailing cold front will then move across the area Sunday night. Low pressure over the western Great Lakes and New England weakens Monday into Tuesday. Another low will pass well south and east during the middle of the week, followed by high pressure to close out the week.

NEAR TERM /UNTIL 6 AM SUNDAY MORNING/. Area of convection across southeast PA may influence how widespread rain is for some of the night. PoPs may have to be lowered a bit after this batch of rain currently over the area moves through. Otherwise, the forecast is on track.

A closed upper low will track toward the Great Lakes tonight, while a high amplitude ridge will work off the eastern seaboard. This will place the area under prolonged period of large scale warm advection. Occasional rain will continue through the night and at times could become moderate. Toward daybreak, as mid level dry air works in aloft, the rain may transition to light rain and drizzle. While all the dynamics are displaced well west of the area, there is decent thermal forcing through the overnight as a 35-40 kt southerly LLJ works across the area.

East winds will strengthen through tonight with the potential for gusts up to 25 mph, mainly near the coast.

Lows will remain well above normal, generally in the mid 40s.

SHORT TERM /6 AM SUNDAY MORNING THROUGH SUNDAY NIGHT/. Warm front stalls just south of Long Island on Sunday with occasional rain and drizzle through most of the day. Gusty east winds along the coast in the morning will diminish through the afternoon. A frontal wave will then approach from the west in the afternoon. While there is marginal elevated instability in the afternoon with height falls aloft, there is no surface based instability and the forcing is week. There could be a brief shower in the evening hours as a weak cold front passes through the area, otherwise any light rain and/or drizzle will taper off during the evening hours.

Highs Sunday will be around 50, with lows again the 40s.

LONG TERM /MONDAY THROUGH SATURDAY/. Stacked low pressure over the western Great Lakes region will track southeast into northern and central New York Monday morning into Tuesday morning, weakening as it does so. Associated cold pool aloft will lead to some instability, while at the surface, an inverted trough will be in place. This will allow enough instability and lift for some light showers through the period, though exactly where they will be is still uncertain. However, highest chances would be for areas closest to the stacked low, which would be for more northern portions of the forecast area. Best chances for showers would be Monday afternoon into the first part of Monday night.

Mainly dry conditions are then forecast Tuesday afternoon through the rest of the week. However, there will be chances for passing showers as a coastal low passes well south and east late Tuesday night into Wednesday, mainly across western and southern sections.

As the storm intensifies and expands well east of the region Thursday night, the western edge of the precipitation field will move westward toward our area. Some vorticity maxima may move through aloft, as well as spokes of surface troughs rotating around the low which will aid in the possibility for showers, but right now, looks to only be a slight chance for extreme eastern areas.

Thereafter, dry conditions are forecast through the end of the week with high pressure building in.

Other than some above normal temperatures for Monday, seasonable temperatures are expected through the week.

AVIATION /00Z SUNDAY THROUGH THURSDAY/. A warm front will approach from the south through tonight. The front becomes stationary south of Long Island on Sunday.

Conditions will continue lowering to MVFR and then IFR through 03z in rain. Timing of lower flight categories this evening may be off by 1-2 hours. The rain should become intermittent overnight and could be in the form of drizzle. Conditions will likely lower to LIFR early Sunday morning in ceilings. Visibilities lower to IFR, but may also become LIFR briefly. IFR, possibly LIFR at times, is expected through Sunday in light rain and drizzle. Some improvement is possible late in the day.

NE winds around 10 kt this evening. NE-E winds become 10-15 kt overnight especially near the coast. Gusts up to 20 kt are also expected near the coast into Sunday morning. NE-E winds around 10-15 kt Sunday morning and afternoon gradually weaken late in the day.

OUTLOOK FOR 00Z MONDAY THROUGH THURSDAY. Sunday Night. IFR or LIFR early, then improving to VFR late. Monday. Mainly VFR. A few showers possible in the afternoon and at night. Tuesday-Wednesday. Mainly VFR. Slight chance of showers Tuesday morning and then again on Wednesday. Thursday. VFR.

MARINE. East winds will continue to gradually strengthen through the evening with SCA conditions developing across all waters with gusts 25 to 30 kt. Seas will build to 5 to 8 ft on the ocean and 2 to 4 ft on the sound, possibly as high as 5 ft in spots. Winds will diminish from west to east on Sunday as the pressure gradient relaxes. However, SCA seas are expected to linger on the ocean waters through Sunday night.

Waves on the ocean waters will remain around 5 ft Monday, diminishing slowly through the day, falling below 5 ft early Monday night. Thereafter, light winds will lend to sub SCA waves.

A coastal storm will pass well south and east of the region in the middle of the week, however it will pass far enough south to allow winds to remain below 25 kt through the forecast period.

HYDROLOGY. Rainfall amounts through Sunday evening will range from 0.50 to 0.75 inches. This will be falling over a long period of time, so no hydrologic impacts are expected with this system. No hydrologic impacts are anticipated through the coming week.

EQUIPMENT. NYC NOAA Weather Radio Station KWO35 (162.55 MHz) is undergoing its final stages of testing, and is operating at full power.

OKX WATCHES/WARNINGS/ADVISORIES. CT . None. NY . None. NJ . None. MARINE . Small Craft Advisory from 10 PM this evening to noon EDT Sunday for ANZ335-338. Small Craft Advisory from 10 PM this evening to 6 PM EDT Sunday for ANZ330-340-345. Small Craft Advisory until 6 AM EDT Monday for ANZ350-353-355.

SYNOPSIS . JP/DW NEAR TERM . DW/DS SHORT TERM . DW LONG TERM . JP AVIATION . DS MARINE . JP/DW HYDROLOGY . JP/DW EQUIPMENT .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44040 - Western Long Island Sound 28 mi38 min ENE 16 G 21 44°F 2 ft42°F
BRHC3 - 8467150 - Bridgeport, CT 31 mi68 min ENE 8 G 11 45°F 44°F1018.6 hPa
44025 - LONG ISLAND 33 NM South of Islip, NY 32 mi48 min 12 G 14 48°F 45°F3 ft1017.2 hPa (+0.4)
44022 - Execution Rocks 33 mi53 min ENE 18 G 23 44°F 32°F44°F
KPTN6 - 8516945 - Kings Point, NY 33 mi68 min ENE 4.1 G 7 44°F 50°F1018.4 hPa
44065 - Entrance to New York Harbor 38 mi48 min NE 14 G 16 46°F 3 ft1017.2 hPa45°F
NWHC3 - 8465705 - New Haven, CT 41 mi68 min E 5.1 G 7 45°F 44°F1018.7 hPa
BATN6 - 8518750 - The Battery, NY 46 mi68 min 46°F 46°F1017.5 hPa
ROBN4 - 8530973 - Robins Reef, NJ 49 mi68 min ENE 11 G 12 45°F 1016.8 hPa
SDHN4 - 8531680 - Sandy Hook, NJ 49 mi68 min ENE 13 G 18 47°F 47°F1017.3 hPa

Wind History for Bridgeport, CT
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Islip, Long Island Mac Arthur Airport, NY6 mi42 minE 9 G 183.00 miLight Rain Fog/Mist47°F45°F93%1018.4 hPa
Farmingdale - Republic Airport, NY14 mi45 minE 11 G 178.00 miLight Rain48°F44°F86%1017.7 hPa
Shirley, Brookhaven Airport, NY17 mi42 minVar 66.00 miLight Rain Fog/Mist48°F44°F86%1018.8 hPa

Link to 5 minute data for KISP

Wind History from ISP (wind in knots)
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Last 24hrW3W5W3N4NW4CalmN4NE5E6E7E7E11E10E12E13E9E10E6NE6E6NE5E6E7E9
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Tide / Current Tables for Great River, Connetquot River, Long Island, New York
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Great River
Click for Map
Sat -- 02:03 AM EDT     0.73 feet High Tide
Sat -- 06:41 AM EDT     Sunrise
Sat -- 08:48 AM EDT     0.05 feet Low Tide
Sat -- 08:59 AM EDT     Moonrise
Sat -- 02:34 PM EDT     0.64 feet High Tide
Sat -- 07:13 PM EDT     Sunset
Sat -- 08:45 PM EDT     0.06 feet Low Tide
Sat -- 11:25 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.70.70.70.60.50.30.20.100.10.30.40.60.60.60.60.50.30.20.10.10.10.3

Tide / Current Tables for Fire Island Radiobeacon, Long Island, New York
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Fire Island Radiobeacon
Click for Map
Sat -- 06:38 AM EDT     0.05 feet Low Tide
Sat -- 06:42 AM EDT     Sunrise
Sat -- 09:00 AM EDT     Moonrise
Sat -- 12:01 PM EDT     0.64 feet High Tide
Sat -- 06:35 PM EDT     0.06 feet Low Tide
Sat -- 07:14 PM EDT     Sunset
Sat -- 11:25 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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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 (20,4,5,8)
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Ground Weather Radar Station Upton, NY
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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 numerous 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.