Saturday, December14, 2019
Privacy Policy
L-36.com


Marine Weather and Tides
Mamaroneck, 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 7:10AMSunset 4:28PM Saturday December 14, 2019 2:45 AM EST (07:45 UTC) Moonrise 8:00PMMoonset 10:25AM Illumination 93% Phase: Waning Gibbous; Moon at 17 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
    EDIT      (on/off)   Help
ANZ335 Long Island Sound West Of New Haven Ct/port Jefferson Ny- 1048 Pm Est Fri Dec 13 2019
.gale warning in effect from Saturday evening through late Saturday night...
Overnight..E winds 15 to 20 kt with gusts up to 25 kt, becoming ne 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Rain. Areas of fog. Vsby 1 to 3 nm.
Sat..E winds 10 to 15 kt, becoming se in the afternoon. Seas around 2 ft. Rain. Vsby 1 to 3 nm in the morning.
Sat night..SW winds 20 to 25 kt with gusts up to 35 kt. Seas 2 to 4 ft. Chance of rain in the evening.
Sun..W winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft.
Sun night..W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft.
Mon..NW winds 10 to 15 kt with gusts up to 20 kt, becoming sw around 5 kt in the afternoon. Seas 1 ft or less. Chance of rain and freezing rain in the afternoon.
Mon night..E winds 5 to 10 kt. Seas 1 ft or less. Rain and freezing rain likely in the evening, then rain after midnight.
Tue..N winds 5 to 10 kt, becoming nw in the afternoon. Seas 1 ft or less. Rain likely in the morning.
Tue night..NW winds 10 to 15 kt. Seas 1 ft or less.
Wed..W winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 1 ft or less, then around 2 ft in the afternoon.
Wed night..NW winds 15 to 20 kt. Seas 2 to 3 ft.
ANZ300 1048 Pm Est Fri Dec 13 2019
Synopsis for the long island waters and new york harbor.. Deepening low pressure approaching from the south overnight will move across on Saturday and pass north Saturday night into Sunday. High pressure will build across Sunday night. A frontal system will then impact the waters Monday through Tuesday, followed by high pressure on Wednesday.


7 Day Forecast for Marine Location Near Mamaroneck, NY
   Hourly   EDIT   Help
location: 40.93, -73.73     debug


Area Discussion for - New York City/Upton, NY
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KOKX 140410 AFDOKX

Area Forecast Discussion National Weather Service New York NY 1110 PM EST Fri Dec 13 2019

SYNOPSIS. Low pressure will approach from the south overnight, move across on Saturday, then pass north by Saturday night. High pressure will briefly build Sunday night. A frontal system will impact the region Monday through Tuesday, followed by high pressure to close out the week.

NEAR TERM /UNTIL 6 AM SATURDAY MORNING/. Monitoring bands of heavy rainfall south of Long Island. Based on obs to the south, KDIX legacy 1-hr precip had the edge over dual- pol on precip estimates, so expect these heavier bands to dump 1/2 to 3/4 inch of rain for 1-2 hours overnight as they ride up into the area roughly between 04Z-08Z. Have bumped up overnight QPF for coastal areas to indicate at least 1 to 1.5 inches during that time. Storm total rainfall of 2-2.5 inches no likely for Long Island and a good deal of southern CT, with 1.5-2 inches from NYC north/west.

As a coastal front remains nearby, fog will likely develop as well under good WAA, and increasing lower level moisture.

A non diurnal trend in temps will occur.

SHORT TERM /6 AM SATURDAY MORNING THROUGH SATURDAY NIGHT/. Rain continues in the morning ahead of sfc low, and mid/upper level shortwave passing northward ahead of main trough axis. The continuous rain should give way to periods of rain by afternoon as the sfc low and front begin to creep across the area ahead of upper trough. Drier air aloft begins to move in, so the main area of rain pushes north, but periods of lighter rain or showers continue late in the afternoon and into the evening before winding down. The sfc low deepens as it heads across New England. Winds shift throughout the day, east to southeast, then to the SW and eventually west behind the low. Gusty conditions are expected at night behind this departing system.

Mile temperatures in the 50s during the day will fall back into the mid 30s to around 40 at night.

After collaboration with surrounding offices, will hold off on flood watch at this time. More about hydrologic concerns below.

LONG TERM /SUNDAY THROUGH FRIDAY/. Dry conditions expected to start out this period as high pressure builds in from the west. It will be breezy however, as departing low continues to strengthen, allowing the pressure gradient to increase over the region. West winds could gust 25 to 35 mph during the day. Otherwise, conditions will be near seasonable, with temperatures in the lower to middle 40s.

The next system to impact the forecast area comes Monday as the high pushes offshore and a warm front approaches from the southwest while at the same time, an area of low pressure develops over the Ohio Valley. This low is forecast to track along the frontal boundary, moving in the vicinity of the forecast area Tuesday. Models show that the low will not be particularly strong as it heads over our region, but there could be a period of moderate precipitation Monday night associated with the approaching warm front.

Uncertainty with model solutions Monday night onward will make precipitation type difficult to forecast at this point. However, do think thermal profiles will be cold enough at the start to support all snow at the start for most places, with a quick changeover to rain along the coast by mid Monday morning. However, QPF amounts will be light at this point, so little in the way of accumulation is expected.

Despite warming aloft, there may be enough cold air in the lower levels where there may be an extended period of wintry precipitation inland, with freezing rain among the precipitation types. Again, this is 4 to 5 days out and the forecast is likely to change over the next couple of days.

Associated cold front will move through late Monday night into Tuesday. Canadian high pressure builds in Wednesday through the end of next week, bringing below normal temperatures, but dry conditions.

AVIATION /04Z SATURDAY THROUGH WEDNESDAY/. A complex area of low pressure will impact the terminals through Saturday as a series of frontal wave moves across the area overnight into Saturday morning. The main area of low pressure will then pass to the north and west in the afternoon hours, ending a cold front through the area in the evening.

Bottom line, this is a low to moderate confidence wind forecast as multiple low centers impact the area, especially overnight into the morning. Confidence increases during the afternoon and evening hours on Saturday.

Generally, looking at an E-NE flow for the NYC and Lower Hudson Valley terminals through the night. However, the eastern terminals will likely gradually veer to the E/SE. Winds speeds will be 10-15 kt, but possibly stronger at KBDR and KGON where speeds could be closer to 15-20 kt overnight before backing off after 12Z. Winds then significantly increase Saturday evening behind the cold front with W-SW winds 15-20 G25-35kt.

Widespread IFR/LIFR through much of Saturday with improvement to VFR in the evening following the cold frontal passage.

LLWS possible tonight into the morning, mainly east of the NYC terminals. Best chance will be at KGON. OUTLOOK FOR 00Z SUNDAY THROUGH WEDNESDAY. Saturday Night. Scattered showers, mainly early. Improving to VFR with W winds increasing to 15-20kt, G25-35kt. Sunday. VFR. West winds around 20kt,G25-35kt. Sunday night-Monday. VFR. W wind gusts diminish to 20 kt Sunday night. Monday night-Tuesday. MVFR to IFR possible. Chance of snow for inland terminals changing to a wintry mix and then to rain. Chance of mainly rain for coastal terminals, with a period of snow or a wintry mix at the start early Monday night. Wednesday. VFR with NW gusts 25-30kt.

MARINE. Easterly winds ahead of a front and low pressure tonight will continue. Although a few gusts to 25 kt are possible, feel they will be occasional, and not enough for SCA issuance for the non ocean waters. SCA remains in effect for the ocean for marginal winds and rough seas.

On Saturday, low pressure approaches and passes overhead resulting in a lull in winds as they turn to the SE. The winds however will then veer to the SW and W by evening, and increase quickly behind deepening low pressure to the north. Gales are expected during this time frame all waters.

Gales will continue for the ocean waters on Sunday as the pressure gradient increases due to strengthening departing low and building high to the west. There is the potential for gales over the remaining waters, but confidence is low at this point to extend the Gale Warning into Sunday. Winds begin to diminish late in the day Sunday, but should fall below SCA around daybreak Monday. The ocean waters may see SCA wind conditions once again Tuesday as a developing low move in the vicinity.

Waves on the ocean on Sunday will range 6 to 13 ft on Sunday. 5 to 8 ft waves are possible across the eastern sound, especially extreme eastern areas of the sound. Waves diminish during the day Sunday and Sunday night, falling below SCA before daybreak Monday on the eastern sound, and by late Monday morning for the ocean. Waves on the ocean build again Monday night as the frontal system and low pressure affect the waters. 5 to 8 ft waves are possible into Tuesday night.

HYDROLOGY. Have seen an uptick in guidance for rainfall tonight into Saturday. Rainfall of 1.5 to 2.5 inches now likely, with the higher amts across Long Island and most of southern CT, also grazing parts of NYC. Most likely impact is areal, poor drainage, and urban flooding. Across northeast NJ, collaborated with neighbor office, and feel most impacts remains across the Passaic river basin. However, some impact in the local HSA is possible, depending on where heaviest rain occurs.

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.

TIDES/COASTAL FLOODING. There is increasing potential for minor coastal flooding with the high tide cycle during Saturday morning (departures of 1 to 2 ft are needed to reach minor benchmarks). This will be due to onshore winds with an approaching storm combined with relatively high astronomical tides due to a nearly full moon.

There is a bit of uncertainty on timing of windshift from SE to SW Saturday morning, which is reflected in a sizable spread of Stevens ensemble. Forecast below is based on a blend of ETSS, ESTOFS and approximately a 75th percentile Stevens ensemble forecast.

Minor coastal flooding is expected along the south shore bays of Nassau and Queens counties, as well as along the coast of SW CT and S Westchester due to a combo of water levels around minor flood levels and some wave actions. Localized minor flooding is likely along the most vulnerable locales of lower NY Harbor, eastern bays and north shore of LI, and along SE CT.

Along the Atlantic Ocean beach front breaking surf of 8 to 13 ft (highest eastern LI) will cause significant beach flooding and erosion during the times of high tide Saturday into Saturday Night. Scattered areas of dune erosion and localized washovers are possible during the times of high tide Saturday morning into afternoon.

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

OKX WATCHES/WARNINGS/ADVISORIES. CT . Coastal Flood Advisory from noon to 3 PM EST Saturday for CTZ009-010. NY . Coastal Flood Advisory from noon to 3 PM EST Saturday for NYZ071. Coastal Flood Advisory from 7 AM to noon EST Saturday for NYZ178-179. NJ . None. MARINE . Gale Warning from 6 PM Saturday to 6 AM EST Sunday for ANZ330- 335-338-340-345-350-353-355. Small Craft Advisory until 6 PM EST Saturday for ANZ350-353- 355.



SYNOPSIS . JP/PW NEAR TERM . Goodman/JP/PW SHORT TERM . PW LONG TERM . JP AVIATION . JC MARINE . Goodman/JP/PW HYDROLOGY . PW TIDES/COASTAL FLOODING . // EQUIPMENT . //


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44022 - Execution Rocks 3 mi45 min NE 21 G 27 47°F 32°F47°F
44040 - Western Long Island Sound 8 mi60 min ENE 21 G 27 48°F 3 ft48°F
KPTN6 - 8516945 - Kings Point, NY 8 mi45 min ENE 12 G 18 48°F 44°F1006.7 hPa (-7.6)
BATN6 - 8518750 - The Battery, NY 22 mi45 min 50°F 45°F1005.8 hPa (-7.3)
ROBN4 - 8530973 - Robins Reef, NJ 26 mi45 min NE 12 G 17 50°F 1005.7 hPa (-7.3)
BGNN4 - 8519483 - Bergen Point West Reach, NJ 30 mi45 min 49°F 44°F1006 hPa (-7.1)
MHRN6 30 mi45 min NNE 15 G 19
BRHC3 - 8467150 - Bridgeport, CT 34 mi51 min ENE 9.9 G 13 48°F 44°F1008 hPa
SDHN4 - 8531680 - Sandy Hook, NJ 35 mi45 min ENE 14 G 22 51°F 44°F1005.2 hPa (-7.3)
44069 38 mi45 min E 16 G 18 49°F 39°F49°F
44065 - Entrance to New York Harbor 39 mi25 min SSE 18 G 21 55°F 1004.2 hPa55°F

Wind History for Kings Point, NY
(wind in knots)    EDIT      (on/off)   Help
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
Last
24hr
E4
--
SE1
E1
E2
NE1
NE3
E4
E4
E3
E2
E4
E4
NE4
E3
E1
NE3
NE7
E5
G8
NE7
NE6
E6
G10
E8
G12
E12
G18
1 day
ago
N14
G17
N13
G16
N15
G19
N14
G17
N13
G18
NE7
G12
NE10
NE9
NE6
G10
NE7
NE3
G6
NW1
SW4
S3
S2
S4
S4
S4
S1
S3
--
SE4
E2
E2
2 days
ago
E4
G7
E7
G12
E6
G9
NE6
G10
NE7
NE5
NE4
G7
N1
--
SW4
NW10
G14
NW14
NW16
G20
NW22
NW20
NW18
G24
NW20
G26
NW17
G23
N14
G18
N17
G21
N17
G21
N12
G17

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
White Plains - Westchester County Airport, NY10 mi1.8 hrsENE 123.00 miRain Fog/Mist49°F48°F97%1009.7 hPa
New York, La Guardia Airport, NY13 mi54 minNE 201.50 miHeavy Rain Fog/Mist and Breezy48°F46°F93%1006.5 hPa
New York City, Central Park, NY16 mi54 minENE 11 G 221.75 miHeavy Rain Fog/Mist50°F48°F93%1006.6 hPa
Teterboro, Teterboro Airport, NJ18 mi54 minNNW 53.00 miRain Fog/Mist50°F50°F100%1006.7 hPa
New York, Kennedy International Airport, NY19 mi54 minENE 91.50 miHeavy Rain Fog/Mist55°F55°F100%1006.4 hPa
Farmingdale - Republic Airport, NY22 mi52 minE 14 G 223.00 miHeavy Rain Fog/Mist55°F53°F93%1006.1 hPa

Link to 5 minute data for KHPN

Wind History from HPN (wind in knots)
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
Last 24hrNE3E5E6E5E6E4E5E6E6E6E5E5E5E5E6E8E9E4E8E8NE9
G16
E10
G17
NE12NE12
1 day agoNW10NW10W7W7NW11NW10N9NW5N55N6NW3SE3S4CalmCalmSE3CalmSE3SE3CalmCalmCalmCalm
2 days agoNW6N7N8N8N4N6CalmE4CalmCalmCalmSW3CalmW4W4W5W8
G14
W11
G21
W14
G17
W11
G17
W12
G19
W6W8NW14

Tide / Current Tables for Mamaroneck, New York
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Mamaroneck
Click for Map
Sat -- 05:57 AM EST     0.18 feet Low Tide
Sat -- 07:11 AM EST     Sunrise
Sat -- 09:24 AM EST     Moonset
Sat -- 12:03 PM EST     8.40 feet High Tide
Sat -- 04:27 PM EST     Sunset
Sat -- 06:44 PM EST     -0.50 feet Low Tide
Sat -- 06:59 PM EST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
7.476.14.52.40.70.20.51.435.57.68.47.96.95.43.21-0.3-0.5-0.113.25.7

Tide / Current Tables for Throg's Neck, Long Island Sound, New York Current
   EDIT      (on/off)   Help   One Week of Data
Throg's Neck
Click for Map
Sat -- 01:02 AM EST     -0.74 knots Max Ebb
Sat -- 03:37 AM EST     0.00 knots Slack
Sat -- 07:11 AM EST     Sunrise
Sat -- 07:23 AM EST     1.00 knots Max Flood
Sat -- 09:24 AM EST     Moonset
Sat -- 09:47 AM EST     -0.00 knots Slack
Sat -- 01:25 PM EST     -0.72 knots Max Ebb
Sat -- 03:57 PM EST     0.00 knots Slack
Sat -- 04:27 PM EST     Sunset
Sat -- 07:00 PM EST     Moonrise
Sat -- 07:47 PM EST     0.99 knots Max Flood
Sat -- 10:08 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
-0.6-0.7-0.6-0.20.10.30.60.90.90.4-0.1-0.3-0.5-0.7-0.7-0.400.20.40.810.60.1-0.2

Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS Local Image of    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 (2,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Upton, NY
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This webiste uses cookies to save your settings. No personal information is saved. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. I do not keep site logs longer than I need to to keep bad actors off the site. Basically, I delete them after looking at them. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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.