Monday, May20, 2019 L-36.com


Marine Weather and Tides
Mamaroneck, NY

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 5:31AMSunset 8:11PM Monday May 20, 2019 10:43 AM EDT (14:43 UTC) Moonrise 10:08PMMoonset 6:59AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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- 943 Am Edt Mon May 20 2019
Today..SW winds 10 to 15 kt. Seas 1 ft or less. Isolated showers and tstms early this afternoon. Scattered showers and tstms late.
Tonight..W winds 10 to 15 kt, becoming nw after midnight. Seas around 2 ft. Scattered showers and tstms in the evening.
Tue..NW winds 10 to 15 kt. Seas 2 to 3 ft.
Tue night..NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft in the evening, then 1 ft or less.
Wed..NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 1 ft or less.
Wed night..W winds around 5 kt, becoming S after midnight. Seas 1 ft or less.
Thu..S winds 5 to 10 kt. Seas 1 ft or less.
Thu night..S winds 5 to 10 kt, becoming sw after midnight. Seas 1 ft or less. Chance of showers.
Fri..N winds 5 to 10 kt, becoming ne in the afternoon. Seas 1 ft or less.
Fri night..SE winds 5 to 10 kt. Seas 1 ft or less. Winds and seas higher in and near tstms.
ANZ300 943 Am Edt Mon May 20 2019
Synopsis for the long island waters and new york harbor.. A cold front will approach today and pass tonight. High pressure builds in from the west on Tuesdat, and over the area on Wednesday. A quick moving frontal system will likely affect the region Thursday night, with a series of subsequent weak frontal systems possible into the weekend.


7 Day Forecast for Marine Location Near Mamaroneck village, 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 201417
afdokx
area forecast discussion
national weather service new york ny
1017 am edt Mon may 20 2019

Synopsis
A cold frontal passage will occur tonight. High pressure will
return for the middle of next week. A quick moving frontal
system will likely affect the region Thursday night, with a
series of subsequent weak frontal systems possible into the
weekend.

Near term through tonight
Main challenge today will be with convection and isolated severe
storms. The latest SPC day 1 convective outlook continues with a
marginal risk for severe storms late this afternoon and evening
for much of the region except for portions of the lower hudson
valley and SW interior connecticut.

Visible satellite imagery shows some middle level clouds but
overall a scenario setting up for significant daytime heating
this morning into the early afternoon. This should lead to
destabilization adding to the convective potential. The main
triggers are generally from an approaching cold front and any
pre-frontal trough surface convergence.

Timing of convective initiation looks to begin 18-20z across the
nw interior and then quickly move east with a broken line of
showers storms in the hudson river corridor 20-22z, and then
moving across southern connecticut and long island 22-00z.

Effective bulk shear is progged to between 30-40 kt. The best
low level backing of the winds still appears to lie across the
lower hudson valley and interior SW ct where the slight risk
resides.

The 00z href updraft helicity probabilities are greatest north
of the CWA where better forcing and ingredients are likely to
line up. However, isolated severe storms cannot be ruled out
anywhere across the region based on the given conditions today.

Sea breeze convergence along the coast could also support a
strong to severe storm as well.

The activity comes to an end from west to east this evening with
much of the high res guidance showing any convection offshore by
02z. The front should move offshore shortly thereafter.

Temps today will be well above normal in the lower to middle 80s
away from the immediate coast, but should be able to reach the
70s elsewhere.

Short term Tuesday
Deep mixing on breezy NW flow. Fairly uniform temps with no sea
breeze. Parts of LI may have the warmest highs due to the lower
elevation and lack of a sea breeze. Very dry with min rh around
30 percent.

Long term Tuesday night through Sunday
Complex blocky upper pattern in place at the start of the long term
period (tue night) with an omega block extending from the mid
atlantic region through the great lakes and into south central
canada, a closed low exiting northern new england, and a longwave
double barreled upper low across the plains and great basin.

As the closed low departs new england and tracks across the
canadian maritimes and into the northern atlantic Tue night wed,
upper level ridging to the west will build towards the area and
strengthen over the SE states. The closed low over the plains
pivots to the north while gradually weakening but its remnant
energy will eventually ride atop the periphery of the upper
level ridge through the upper great lakes southern canada and
then new england Thu night. Model guidance is in pretty good
agreement with this with just some slight timing issues to work
out.

The upper pattern amplifies over the eastern us on Fri as one
shortwave exits and remnant energy from the closed low over the
great basin tracks through the upper plains and eventually
consolidates with a large upper level low over northern and
central canada Fri night sat. The upper pattern starts to
diverge at this point with more noticeable differences at the
sfc.

In terms of sensible weather, dry and seasonable into Thu as
high pres shifts across the northeast. Increasing chances for
showers with isold tstms Thu aftn Thu night as low pres tracks
through new england. Dry and warm weather then returns for
fri Fri night with high pres building in. A slow moving frontal
system approaches on sat, with the increase for showers mainly
sat night. This boundary may stall over the area on sun.

Temperatures will be near normal during the day Wed with a
canadian continental airmass, although temps Wed night could be
unseasonably chilly in outlying areas, dipping into the 40s.

Otherwise temps should gradually moderate to above seasonable
levels by late weekend.

Aviation 14z Monday through Friday
A pre frontal trough moves into the region this afternoon as a cold
front also approaches. The cold front is expected to pass through
the terminals from around 00z northwest to 03z east.

Vfr outside of sct bkn line of showers tstms, which will move
through the region this afternoon and early evening.

Sw winds 10-15 kt with gusts 20-25 kt. Winds will shift to the nw
with the cold front passage and briefly gust 20-25 kt as the front
moves through the terminals.

Ny metro enhanced aviation weather support...

detailed information, including hourly TAF wind component fcsts, can
be found at: http:

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
KPTN6 - 8516945 - Kings Point, NY 8 mi56 min WNW 11 G 13 72°F 59°F1011.1 hPa
BATN6 - 8518750 - The Battery, NY 22 mi56 min 72°F 58°F1010.3 hPa
ROBN4 - 8530973 - Robins Reef, NJ 26 mi56 min W 12 G 19 75°F 1010 hPa
BGNN4 - 8519483 - Bergen Point West Reach, NJ 30 mi62 min 77°F 60°F1010.2 hPa
MHRN6 30 mi56 min SW 14 G 19
BRHC3 - 8467150 - Bridgeport, CT 34 mi62 min SSW 8 G 9.9 69°F 57°F1009.4 hPa
SDHN4 - 8531680 - Sandy Hook, NJ 35 mi56 min W 12 G 15 70°F 61°F1011.8 hPa
44069 38 mi74 min WSW 12 G 16 62°F 62°F60°F
44065 - Entrance to New York Harbor 39 mi44 min S 12 G 14 60°F 1010.6 hPa (+0.0)58°F

Wind History for Kings Point, NY
(wind in knots)    EDIT      (on/off)   Help
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
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
Last
24hr
SW11
SW10
SW18
SW19
G24
SW20
SW18
SW21
SW23
G28
SW23
SW22
SW16
G20
SW12
G15
SW10
G13
S9
S8
S8
G11
S5
S5
S9
S12
SW9
SW10
SW9
W8
1 day
ago
NE5
NE3
E4
NE2
NE2
--
SW10
SW13
SW14
SW17
SW16
SW12
G15
SW13
G16
SW13
SW10
SW9
SW5
S4
S3
S7
S6
SW8
SW8
G12
SW9
2 days
ago
SW7
G12
SW10
G15
SW16
SW13
SW9
G13
S9
SW8
G11
SW5
NW7
NW8
NW2
SW3
N12
--
N10
N8
NE9
NE7
G11
NE3
N5
N6
NE6
G9
NE6
NE5
G8

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
White Plains - Westchester County Airport, NY10 mi1.8 hrsWSW 38.00 miPartly Cloudy71°F66°F84%1009.7 hPa
New York, La Guardia Airport, NY13 mi53 minW 1010.00 miMostly Cloudy77°F64°F66%1009.9 hPa
New York City, Central Park, NY16 mi53 minVar 610.00 miA Few Clouds76°F66°F72%1009.9 hPa
Teterboro, Teterboro Airport, NJ18 mi53 minWSW 11 G 1910.00 miFair78°F66°F67%1009.6 hPa
New York, Kennedy International Airport, NY19 mi53 minSW 1110.00 miMostly Cloudy78°F68°F71%1010.5 hPa
Farmingdale - Republic Airport, NY22 mi51 minSW 810.00 miA Few Clouds74°F63°F69%1010.3 hPa

Wind History from HPN (wind in knots)
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
-12
PM
Last 24hr------------------------------------------------
1 day ago------------------------------------------------
2 days ago------------------------------------------------

Tide / Current Tables for Mamaroneck, New York
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Mamaroneck
Click for Map
Mon -- 01:03 AM EDT     8.46 feet High Tide
Mon -- 05:33 AM EDT     Sunrise
Mon -- 06:59 AM EDT     Moonset
Mon -- 07:45 AM EDT     -0.84 feet Low Tide
Mon -- 01:41 PM EDT     7.56 feet High Tide
Mon -- 07:49 PM EDT     0.15 feet Low Tide
Mon -- 08:10 PM EDT     Sunset
Mon -- 10:08 PM EDT     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
8.18.58.16.64.11.80.3-0.6-0.80.22.556.77.47.56.74.72.510.40.20.82.85.3

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
Mon -- 01:21 AM EDT     -0.80 knots Max Ebb
Mon -- 04:27 AM EDT     0.00 knots Slack
Mon -- 05:33 AM EDT     Sunrise
Mon -- 07:00 AM EDT     Moonset
Mon -- 07:29 AM EDT     1.08 knots Max Flood
Mon -- 10:39 AM EDT     -0.00 knots Slack
Mon -- 01:46 PM EDT     -0.79 knots Max Ebb
Mon -- 04:55 PM EDT     0.00 knots Slack
Mon -- 07:54 PM EDT     1.03 knots Max Flood
Mon -- 08:10 PM EDT     Sunset
Mon -- 10:08 PM EDT     Moonrise
Mon -- 10:55 PM EDT     -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
-0.6-0.8-0.7-0.4-0.10.10.5110.50.2-0.1-0.4-0.7-0.8-0.6-0.200.30.810.70.2-0

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_A
GOES 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 (10,2,3,4)
      (on/off)   Help

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

Ad by Google

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.