Saturday, April21, 2018 L-36.com


Marine Weather and Tides
Mastic, NY

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 6:00AMSunset 7:39PM Saturday April 21, 2018 5:45 AM EDT (09:45 UTC) Moonrise 10:40AMMoonset 12:45AM Illumination 35% Phase: Waxing Crescent; Moon at 6 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- 329 Am Edt Sat Apr 21 2018
Today..NW winds around 10 kt, becoming sw 10 to 15 kt late. Waves 1 ft or less.
Tonight..W winds 5 to 10 kt, becoming N after midnight. Waves 1 ft or less.
Sun..NW winds around 5 kt, becoming S 10 to 15 kt in the afternoon. Waves 1 ft or less.
Sun night..SW winds 5 to 10 kt, becoming nw after midnight. Waves 1 ft or less.
Mon..NE winds around 5 kt, becoming se in the afternoon. Waves 1 ft or less.
Mon night..S winds 5 to 10 kt. Waves 1 ft or less.
Tue..SE winds 5 to 10 kt. Waves 1 ft or less.
Tue night..SE winds around 10 kt. Waves 1 ft or less. Chance of rain.
Wed..E winds 10 to 15 kt. Waves around 2 ft. Rain likely.
Wed night..E winds 5 to 10 kt, becoming N after midnight. Waves 1 ft or less. Rain likely, mainly in the evening.
ANZ300 329 Am Edt Sat Apr 21 2018
Synopsis for the long island waters and new york harbor.. High pressure builds in from the west through the weekend, and remains over the region into Monday. A coastal low will affect the region the middle of next week, possibly lingering into late week.

7 Day Forecast for Marine Location Near Mastic, NY
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location: 40.83, -72.84     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 210752
afdokx
area forecast discussion
national weather service new york ny
352 am edt Sat apr 21 2018

Synopsis
High pressure builds in from the west through the weekend, and
remains over the region into Monday. A coastal low will affect
the region the middle of next week, possibly lingering into late
week.

Near term until 6 pm this evening
Deep closed low continues to lift north of new foundland, with mean
troughing continuing over the NE us in its wake. At the surface,
high pressure builds into the region from the west. Although a weak
backside shortwave will have a surface trough moving through the
region in the afternoon evening.

Continued W NW flow today, but weaker than Friday. A gradual
moderation in airmass and deep mixing should allow temps to rise
into the mid to upper 50s. Late day seabreeze possible along
the immediate south coasts. Mostly sunny skies expected, just
few-sct afternoon CU across NE portions of the region with
late day shortwave trough passage. Otherwise just a few wisps
of cirrus.

Short term 6 pm this evening through Monday
Tranquil period with mean troughing in control of the NE us
through the weekend, then giving way to shortwave ridging Sunday
night into Monday. At the surface, high pressure will continue
to build in from the west Sunday and overhead on Monday.

Although, a weak front will move through the region late Sunday
in response to one final kicker shortwave moving through the
region.

A couple of clear and chilly nights tonight and Sunday night.

Areas of frost expected across outlying areas with good
radiational cooling into the upper 20s to lower 30s. Elsewhere
lows generally in upper 30s to lower 40s, and slightly milder
nyc nj metro.

Otherwise, mostly sunny, tranquil and seasonable spring
conditions Sunday and Monday. Highs generally in the upper 50s
to lower 60s on Sunday, with cooler temps along the south coasts
with afternoon sea breeze development. A bit warmer conditions
likely Monday (lower to mid 60s) , especially nyc nj metro and
interior, with continued moderation of airmass and developing
return flow. Along the coast, temps will likely hold in the
upper 50s to lower 60s with return flow and sea breezes
developing in the afternoon.

Long term Monday night through Friday
Upper air pattern will very much resemble early springtime as an
upper low over the mississippi valley this weekend slowly works east
on the heels of the departing trough over the northeast. Models in
good agreement with this energy and associated low pressure system
lifting northward towards the region Tuesday into Wednesday in
response to northern stream shortwave energy moving into the upper
midwest and great lakes. Overrunning rains are likely to develop
across the area Tuesday night and continue through Wednesday,
possibly Wed night.

Thereafter, models diverge in the amplification of this shortwave
energy over the the upper midwest and great lakes region during the
midweek period. This is further complicated by differences in
the amplification the next northern stream shortwave diving
into the great lakes and mississippi river valley for late week.

The evolution of these two troughs will determine the details
for the next low pressure system S affecting the region thu
thru sat. A chance of showers remain in the forecast during this
time to denote the potential.

So uncertainty in the guidance for the end of the week continues,
however, the global models continue to point to some degree of
troughing reestablishing itself across the northeast for next
weekend.

As for temperatures, much of the period will feature seasonable
temperatures with the exception of Wednesday, where onshore flow
will keep highs several degrees below normal.

Aviation 08z Saturday through Wednesday
High pressure will build in through the TAF period going into early
Sunday.VFR conditions are expected. Winds will be near 10 kt or
less through much of the TAF period mainly from W to NW direction.

The winds will initially be NW going into early today and then back
to a more westerly direction during the afternoon with some SW flow
as a sea breeze for some terminals. Also for this afternoon into
early evening, there will be some wind gusts to 15-20 kt. The timing
and duration of any sea breezes is uncertain with wind direction
possibly varying about 20-40 degrees comparing observed to forecast
for this afternoon. The timing of the SW flow could also be 2-3
hours off from forecast.

Outlook for 06z Sunday through Wednesday
Late tonight through Tuesday Vfr.

Tuesday night through Wednesday MVFR or lower conditions
increasingly likely with rain.

Marine
Tranquil conditions expected this weekend through next Tuesday with
high pressure in control and a weak pressure gradient.

Low pressure moving up the eastern seaboard Tuesday into
Wednesday will result in increasing winds and building seas with
sca conditions likely to return by Wednesday morning.

Hydrology
Dry conditions are expected through Tuesday, with area rivers
and streams gradually receding.

A widespread rainfall is expected for the middle of next week
with the possibility of moderate to heavy rain. Predictability
is low on rainfall amounts and hydrologic impacts at this time.

Equipment
Nyc NOAA weather radio station kwo-35 (162.55 mhz) remains off
the air.

Okx watches warnings advisories
Ct... None.

Ny... None.

Nj... None.

Marine... None.

Synopsis... Nv
near term... Nv
short term... Nv
long term... Nv dw
aviation... Jm
marine... Nv dw
hydrology... Nv dw
equipment...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44039 - Central Long Island Sound 23 mi46 min WNW 14 G 16 40°F 1 ft
BRHC3 - 8467150 - Bridgeport, CT 30 mi52 min NNW 4.1 G 6 37°F 42°F1027.7 hPa
NWHC3 - 8465705 - New Haven, CT 32 mi46 min N 6 G 9.9 39°F 45°F1028.1 hPa (+0.6)
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 43 mi56 min NW 14 G 16 41°F 42°F3 ft1027.1 hPa (+0.9)32°F
44025 - LONG ISLAND 33 NM South of Islip, NY 44 mi56 min NW 14 G 16 42°F 42°F2 ft1028.3 hPa (+0.8)
KPTN6 - 8516945 - Kings Point, NY 49 mi46 min N 8.9 G 11 40°F 44°F1029.7 hPa (+0.6)
MTKN6 - 8510560 - Montauk, NY 49 mi46 min 40°F 44°F1027 hPa (+0.8)

Wind History for Bridgeport, CT
(wind in knots)    EDIT      (on/off)   Help
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Last
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NW4
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Shirley, Brookhaven Airport, NY1 mi1.8 hrsNW 610.00 miFair37°F28°F70%1027.9 hPa
The Gabreski Airport, NY11 mi53 minNW 610.00 miFair33°F24°F70%1028.2 hPa
Islip, Long Island Mac Arthur Airport, NY14 mi1.8 hrsWNW 710.00 miFair37°F27°F67%1028 hPa

Wind History from HWV (wind in knots)
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Last 24hrNW12NW11N13
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1 day agoN6N8NE34N15
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N8N8N3NW6NW7NW10NW8W10NW14NW9NW9NW9NW8W10NW10NW12NW8W9NW8
2 days agoW8
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SW7SW4S3S3CalmCalmCalm3N3Calm

Tide / Current Tables for Moriches Coast Guard Station, Long Island, New York
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Moriches Coast Guard Station
Click for Map
Sat -- 12:03 AM EDT     2.57 feet High Tide
Sat -- 12:44 AM EDT     Moonset
Sat -- 06:03 AM EDT     Sunrise
Sat -- 07:49 AM EDT     0.08 feet Low Tide
Sat -- 10:40 AM EDT     Moonrise
Sat -- 12:51 PM EDT     2.18 feet High Tide
Sat -- 07:36 PM EDT     Sunset
Sat -- 07:52 PM EDT     0.27 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.62.52.21.71.20.70.40.10.10.411.622.221.71.20.80.50.30.30.51.11.8

Tide / Current Tables for Shinnecock Canal, Railroad Bridge, New York Current
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Shinnecock Canal
Click for Map
Sat -- 12:43 AM EDT     Moonset
Sat -- 02:09 AM EDT     -0.00 knots Slack
Sat -- 05:22 AM EDT     -1.67 knots Max Ebb
Sat -- 06:02 AM EDT     Sunrise
Sat -- 09:12 AM EDT     0.00 knots Slack
Sat -- 10:38 AM EDT     Moonrise
Sat -- 11:29 AM EDT     1.24 knots Max Flood
Sat -- 02:29 PM EDT     -0.00 knots Slack
Sat -- 05:38 PM EDT     -1.42 knots Max Ebb
Sat -- 07:36 PM EDT     Sunset
Sat -- 09:09 PM EDT     0.00 knots Slack
Sat -- 11:51 PM EDT     1.56 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.410.1-0.8-1.4-1.6-1.6-1.2-0.7-0.10.61.21.20.90.4-0.4-1.1-1.4-1.4-1.1-0.6-0.10.61.3

Weather Map and Satellite Images
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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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for New York City/Upton, NY (5,6,7,8)
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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 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.