Mamaroneck, NY Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Mamaroneck, NY


December 7, 2023 7:34 AM EST (12:34 UTC)
Sunrise 7:04AM   Sunset 4:28PM   Moonrise  2:25AM   Moonset 2:23PM 

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. Privacy and Cookie policy

Marine Forecasts
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ANZ335 Long Island Sound West Of New Haven Ct/port Jefferson Ny- 542 Am Est Thu Dec 7 2023
Today..W winds 5 to 10 kt with gusts up to 20 kt. Seas 1 ft or less. Chance of flurries late this morning. Chance of snow showers and slight chance of showers early this afternoon, then chance of sprinkles and slight chance of snow showers late.
Tonight..W winds 5 to 10 kt. Seas 1 ft or less.
Fri..NE winds around 5 kt, becoming E in the afternoon. Seas 1 ft or less.
Fri night..SE winds around 5 kt. Seas 1 ft or less.
Sat..SE winds around 5 kt. Seas 1 ft or less.
Sat night..S winds around 5 kt. Seas 1 ft or less.
Sun..S winds 15 to 20 kt with gusts up to 30 kt. Seas around 2 ft. Showers likely. Vsby 1 to 3 nm.
Sun night..SW winds 20 to 25 kt with gusts up to 40 kt. Seas 2 to 4 ft. Showers. Vsby 1 to 3 nm.
Mon..W winds 20 to 25 kt with gusts up to 35 kt. Seas 2 to 4 ft. Chance of showers.
Mon night..W winds 15 to 20 kt with gusts up to 30 kt. Seas around 2 ft.

ANZ300 542 Am Est Thu Dec 7 2023
Synopsis for the long island and connecticut coastal waters.. A weakening low pressure area along a front approaches the region today into early this evening. High pressure then moves across the area later tonight and then moves offshore Friday. High pressure will be in control Friday and Saturday. A strong cold front approaches on Sunday and passes through during Sunday night. High pressure then builds in on Monday and remains in control through Monday night.


7 Day Forecast for Marine Location Near Mamaroneck, NY
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Area Discussion for - New York City/Upton, NY
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NOTE: mouseover dotted underlined text for definition
FXUS61 KOKX 071039 AFDOKX

Area Forecast Discussion National Weather Service New York NY 539 AM EST Thu Dec 7 2023

SYNOPSIS
A weakening low pressure area along a front approaches the region today into early this evening. High pressure then moves across the area later tonight and then moves offshore Friday. High pressure will be in control Friday and Saturday. A strong cold front approaches on Sunday and passes through during Sunday night. High pressure then builds in on Monday and remains in control through the middle of next week.

NEAR TERM /UNTIL 6 PM THIS EVENING/
Minor adjustments were made to hourly temperatures for this morning to account for current observations. Otherwise, the forecast remains on track.

Aloft, in the mid levels, a shortwave approaches with its positive vorticity advection this morning into this afternoon.

At the surface, a weakening low pressure area may bring a few light rain or snow showers into mainly western parts of the region.
Forcing and moisture will be limited so the precipitation may end up materializing as just sprinkles or flurries. Little to no measurable precipitation is expected. Timing of chance POPs coincide with warmest temperatures so no snow accumulations expected.

The precipitation forecast was created after evaluating the reflectivity forecasts of mesoscale models such as the HRRR, HRW NSSL, HRW ARW, HRW FV3 and the NAM Nest which all depict discrete areas of light precipitation across parts of the region late this morning into this afternoon.

A weakening pressure gradient will allow for lighter winds but extra clouds will mitigate daytime high temperatures. These are forecast to range upper 30s to lower 40s. A blend of NBM and NBM 50th percentile was used for the max temperature forecast.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM FRIDAY/
The large scale feature across the local region will be high pressure building in more later at night, which will have its center remain well to the north and south of the region. This will keep the pressure gradient more relaxed. Also, the local area will be in the weaker part of this high pressure.

In the mid levels, that shortwave that was mentioned in the near term section will still be nearby. For the easternmost parts of the region, there will be some positive vorticity advection. The mesoscale models depict pop up shower activity in the vicinity of the Twin Forks for the evening hours into the start of the overnight. Coverage is isolated to scattered at most. With well established westerly flow and limited moisture, keeping the POPs only slight chance for Eastern Long Island and flurries or sprinkles in nearby sections along the coast as well as into SE Connecticut.

Dry conditions expected outside of the eastern parts of the region this evening and by overnight for the entire forecast region.
These dry conditions continue through Friday.

Winds overall will be relatively light due to the weak pressure gradient.

Low temperatures for tonight will range mid 20s to mid 30s. A blend of NBM, MAV, MET guidance was used.

Temperatures will warm up Friday compared to the previous day with more return SW flow developing which will allow for low level warm air advection. Again used a blend of NBM, MAV and MET guidance with forecast highs ranging from low to upper 40s.

LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/
Ridging aloft occurs on Friday night and Saturday with surface high pressure in control, keeping us dry. Associated subsidence will compress the boundary layer further increasing temperatures aloft and raising the pressure. This in turn will lead to a lower lapse rate, so any mixing of these temperatures down to the surface will not be a warm if it weren't for the subsidence inversion. Highs on Saturday will be slightly above normal in the mid-50s for southern coastal areas. Northern interior areas will be in the low-50s. SOuth winds will also help with warming and keeping overnight lows from cooling too much.

Global 00Z guidance is mostly in agreement with the evolution of a frontal system late Sunday into Monday with only minor timing differences. A longwave trough will develop in Colorado and New Mexico moving into the Great Plains allowing a Colorado Low to develop in north Texas/Oklahoma Saturday morning. A shortwave develops within the longwave trough in the Upper Midwest that accelerates the low northeast into the Great Lakes and subsequently into Canada Saturday night. The longwave then becomes much more amplified as it moves into the Mississippi and Ohio River Valleys.
It develops another low in the Tennessee Valley on Sunday morning along a strong cold front extending from the first low that has now moved into Quebec. Unlike previous guidance, as the trough moves towards us and passes Sunday into Monday, it is no longer expected to become negatively tilted. The only 00Z guidance with this solution is the UKMET. This means this system may not be as potent as previously forecasted, but it still will be and may pass by a little quicker once it has arrived. Sunday night into early Monday morning the cold front is expected to pass with the low overhead, which will then further develop as it moves into New England on Monday.

A strong low-level jet is expected to develop ahead of the front, leading to strong warm air advection at the surface. Highs will reach the low-60s on Sunday, preceding the cold front. The low-level jet will reach its peak over the eastern half of the CWA where winds are expected to be the strongest around midnight at about 60-70 kts (model guidance varies between 50 and 80 kts), with south winds first beginning to increase across the area Sunday afternoon. Wind gusts are currently projected to peak 40-45 mph for the southern half of the CWA with northern interior areas reaching peak gusts around 35-40 mph. After the frontal passage late Sunday night into early MOnday morning, breezy WNW winds will take over sustained at 15-20 mph on Monday before weakening Monday night as the pressure gradient weakens from the departing low.

Rain is expected to start in the late afternoon to evening on Sunday then clear after the frontal passage before or just after daybreak on Monday. Mostly rain is expected, but light brief snow or flurries are possible in Western Passaic or Orange county before the rain ends as the air rapidly cools and dries.
PWATs will be around 1.3 to 1.6" which is right around or just above the max moving average. Its reasonable to assume that periods of moderate or heavy rain will be possible. With the quick moving front, however, it may not last long enough for any significant flooding concerns, with only minor nuisance flooding being the more likely outcome. 1-2 inches are expected in total. NBM probabilities show around 60-80% chance of greater than 1" in 24 hours with that lowering to 40-60% chance of greater than 2" of rainfall in 24 hours. The higher chances would likely be concentrated in the western half of the CWA.

High pressure then builds in through the rest of Monday and remains in control through Wednesday with an extended period of dry weather and near normal temperatures.

AVIATION /12Z THURSDAY THROUGH MONDAY/
A weakening low pressure area along a front approaches the region today into early this evening. High pressure then moves across the area later tonight and then moves offshore Friday.

Mainly VFR conditions expected through the TAF period. Ceilings lower ahead of an approaching weak low today with a chance of MVFR in the afternoon, mainly due to ceilings, but north and west of NYC terminals MVFR visibilities will be possible as well. Light rain showers or sprinkles and/or light snow showers or flurries are possible in the afternoon for the NYC and Lower Hudson Valley terminals. Some snow flurries are possible near KGON for this evening also.

Winds will become more westerly with wind speeds generally near 5-10 kt through much of the TAF period.

...NY Metro(KEWR/KLGA/KJFK/KTEB) TAF Uncertainty...

Timing of MVFR may vary a few hours from TAF.

OUTLOOK FOR 06Z FRIDAY THROUGH MONDAY...

Late Friday Night-Saturday: VFR.

Sunday: MVFR or lower in developing rain from west to east during the day. S winds increasing with gusts 30 to 40 kt, mainly at night. Highest winds will be at the coastal terminals. LLWS likely.

Monday: VFR with NW winds 15-25 kt.

Detailed information, including hourly TAF wind component forecasts, can be found at: https:/ www.weather.gov/zny/n90

MARINE
Below SCA conditions are expected across the forecast waters today through Friday with a relatively weak pressure gradient in place. Conditions are forecast to remain below SCA thresholds Friday night through Saturday night.

Winds and seas should ramp up quickly during Sunday with small craft conditions quickly going to gales in all likelihood by late in the day/early evening. Solid gales are expected across all waters Sunday night, with gales likely lingering into Monday morning for most of the waters. Ocean seas are likely build to 10-15 feet during this time with waves over 5 ft across portions of eastern Long Island Sound.

HYDROLOGY
No hydrologic issues expected through Saturday night.

1 to 2 inches of rain are possible from late Sunday afternoon through Monday morning. It appears that the heaviest rainfall is most likely to occur during Sunday night. Minor flooding will be possible, mainly Sunday night - confidence in this is moderate.
Cannot completely rule out flash flooding either, but this is a lower confidence forecast as chances are low given flash flood guidance and the progressive nature of the storm system.

OKX WATCHES/WARNINGS/ADVISORIES
CT...None.
NY...None.
NJ...None.
MARINE...None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
44022 - Execution Rocks 3 mi35 min W 12 34°F 30.0621°F
KPTN6 - 8516945 - Kings Point, NY 8 mi47 min W 9.9G12 33°F 47°F30.08
BATN6 - 8518750 - The Battery, NY 22 mi47 min 33°F 48°F30.03
ROBN4 - 8530973 - Robins Reef, NJ 26 mi47 min W 8.9G12 32°F 30.08
BGNN6 30 mi47 min 32°F 46°F30.08
MHRN6 30 mi47 min W 9.9G11
BRHC3 - 8467150 - Bridgeport, CT 34 mi47 min NW 2.9G5.1 28°F 51°F30.00
SDHN4 - 8531680 - Sandy Hook, NJ 35 mi47 min WNW 12G16 34°F 45°F30.11
44069 38 mi35 min 33°F 41°F24°F
44065 - Entrance to New York Harbor 39 mi35 min 14G21 53°F30.04

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Wind History for Kings Point, NY
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KHPN WESTCHESTER COUNTY,NY 10 sm38 minW 0610 smClear30°F18°F59%30.02
KLGA LAGUARDIA,NY 13 sm43 minWNW 0710 smMostly Cloudy34°F16°F47%30.07
KTEB TETERBORO,NJ 18 sm43 minW 0610 smClear30°F18°F59%30.07
KJFK JOHN F KENNEDY INTL,NY 20 sm43 minWNW 1310 smMostly Cloudy32°F18°F55%30.08
KFRG REPUBLIC,NY 22 sm41 minW 0610 smClear32°F18°F55%30.06
KJRB DOWNTOWN MANHATTAN/WALL ST,NY 22 sm38 minW 08G1410 smClear34°F19°F55%30.09

Wind History from HPN
(wind in knots)


Tide / Current for Mamaroneck, New York
   
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Mamaroneck
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Thu -- 12:18 AM EST     1.39 feet Low Tide
Thu -- 01:24 AM EST     Moonrise
Thu -- 06:49 AM EST     6.89 feet High Tide
Thu -- 07:05 AM EST     Sunrise
Thu -- 01:18 PM EST     1.25 feet Low Tide
Thu -- 01:23 PM EST     Moonset
Thu -- 04:26 PM EST     Sunset
Thu -- 07:18 PM EST     6.32 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Mamaroneck, New York, Tide feet
12
am
1.4
1
am
1.4
2
am
1.9
3
am
3.3
4
am
5
5
am
6.3
6
am
6.8
7
am
6.9
8
am
6.6
9
am
5.5
10
am
3.7
11
am
2.2
12
pm
1.5
1
pm
1.3
2
pm
1.4
3
pm
2.2
4
pm
3.8
5
pm
5.3
6
pm
6.1
7
pm
6.3
8
pm
6.2
9
pm
5.6
10
pm
4
11
pm
2.3



Tide / Current for Throg's Neck, Long Island Sound, New York Current
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Throg's Neck
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Thu -- 12:59 AM EST     0.76 knots Max Flood
Thu -- 01:24 AM EST     Moonrise
Thu -- 03:45 AM EST     -0.00 knots Slack
Thu -- 07:05 AM EST     Sunrise
Thu -- 07:13 AM EST     -0.57 knots Max Ebb
Thu -- 10:08 AM EST     0.00 knots Slack
Thu -- 01:24 PM EST     Moonset
Thu -- 01:25 PM EST     0.85 knots Max Flood
Thu -- 04:27 PM EST     Sunset
Thu -- 04:39 PM EST     -0.00 knots Slack
Thu -- 07:43 PM EST     -0.56 knots Max Ebb
Thu -- 10:53 PM EST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Throg's Neck, Long Island Sound, New York Current, knots
12
am
0.5
1
am
0.8
2
am
0.5
3
am
0.2
4
am
-0
5
am
-0.2
6
am
-0.4
7
am
-0.6
8
am
-0.5
9
am
-0.2
10
am
-0
11
am
0.1
12
pm
0.4
1
pm
0.8
2
pm
0.8
3
pm
0.4
4
pm
0.1
5
pm
-0.1
6
pm
-0.3
7
pm
-0.5
8
pm
-0.6
9
pm
-0.4
10
pm
-0.1
11
pm
0




Weather Map
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Upton, NY,



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