Tuesday, November21, 2017 L-36.com


Marine Weather and Tides
Mastic, NY

Version 3.4
What's New / NOTES
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.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:45AMSunset 4:29PM Tuesday November 21, 2017 12:42 PM EST (17:42 UTC) Moonrise 10:16AMMoonset 8:08PM Illumination 9% Phase: Waxing Crescent; Moon at 3 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- 1152 Am Est Tue Nov 21 2017
.small craft advisory in effect through this evening...
This afternoon..SW winds 20 to 25 kt with gusts up to 30 kt. Waves around 2 ft.
Tonight..SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Waves around 2 ft in the evening, then 1 ft or less. Rain after midnight.
Wed..W winds 10 to 15 kt, becoming nw in the afternoon. Gusts up to 25 kt. Waves 1 ft or less, then around 2 ft in the afternoon. Chance of rain in the morning.
Wed night..N winds 10 to 15 kt. Gusts up to 25 kt in the evening. Waves around 2 ft.
Thu..NW winds 5 to 10 kt, becoming W in the afternoon. Waves 1 ft or less.
Thu night..W winds around 10 kt. Waves 1 ft or less.
Fri..W winds 5 to 10 kt. Waves 1 ft or less.
Fri night..SW winds 5 to 10 kt. Waves 1 ft or less.
Sat..SW winds 10 to 15 kt. Waves 1 ft or less.
Sat night..W winds around 10 kt. Waves 1 ft or less.
ANZ300 1152 Am Est Tue Nov 21 2017
Synopsis for the long island waters and new york harbor.. A cold front passes through early Wednesday followed by high pressure. A warm front will lift through on Saturday, followed by a cold front Saturday night.

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 211701
afdokx
area forecast discussion
national weather service new york ny
1201 pm est Tue nov 21 2017

Synopsis
A cold front approaches from the west today and passes through
early Wednesday followed by high pressure. A warm front moves
north Saturday followed by a cold front Saturday night. High
pressure builds to the west Sunday and Monday.

Near term until 6 pm this evening
Forecast on track. Mainly sunny day with patchy cirrus. High
temperatures a few degrees above normal due to SW flow ahead of
approaching northern stream trough. Gusty winds this afternoon
20-30 mph, with the highest gusts along the coast due to
increasing surface pressure gradient.

Short term 6 pm this evening through 6 pm Wednesday
Rather impressive shortwave over the gulf of mexico with
convection firing in the right rear quadrant of 100 kt jet
streak. This convection lifts rapidly across fl to off the
carolina coast this evening. Jet then strengthens to 120 kt
ahead of the sharpening of the northern stream shortwave.

Nwp, including the gefs, SREF and hrefv2 (replaced spc's sseo)
ensembles all support rain moving into nyc long island and s.

Ct before sunrise. Have raise pops significantly from previous
forecast due the observed dynamics and the consensus of the
latest nwp.

Rain will move east of the region by noon though as colder air
rushes in Wednesday afternoon with gusty NW winds and clearing
skies.

Long term Wednesday night through Monday
Long range models are in good agreement through fri, with
noticeable differences starting Sat as a shortwave approaching
from the northern rockies interacts with a canadian vortex near
hudson bay. This is leading to timing and amplitude differences
with the 00z ec now developing a cutoff low over new england sun
night. GFS remains open.

As such, no big changes to the previous forecast through the
end of the week, but have cut back on the extent of pops
associated with the warm FROPA on Sat as models have trended
slower and drier. Southern stream shortwave and developing sfc
low passes well S and E of the area Sat sat night as a cold
front moves through the local area. Not much moisture for the
front to work with have kept the forecast dry Sat night.

Since the upper pattern is a bit uncertain next weekend, this
offshore low will need to be watched. If the full latitude
trough amplifies more, the low would shift to the west and could
result in potential impacts.

A secondary cold front with a reinforcing shot of cold air
could bring a few showers to the area on Sun with gusty winds
developing in its wake. Vigorous shortwave in the GFS which ec
is weaker. Schc to low chc pops with this feature. Soundings
mostly support rain at this time, although could get some wet
snowflakes Sun morning N and W of nyc.

Daytime temperatures are expected to be below normal through
the period, except on Sat in the warm sector. Overnight lows
also below normal except Fri Sat nights where they'll be near
normal.

Aviation 18z Tuesday through Sunday
High pressure slides further of the mid-atlantic coast today. A cold
front approaches from the west tonight.

Vfr through at least midnight. MVFR then develops at ct long
island city terminals from E to w. Low chance at ifr ct long
island terminals and very low chance city terminals. Should
stayVFR at kswf through the TAF period.

Sw winds increase to around 10-15g20-25kt by mid-late morning.

Winds diminish late this afternoon early this evening. With
gusts abating during the evening. Winds become light and
variable outside of kjfk klga overnight.

Ny metro enhanced aviation weather support...

detailed information... Including hourly TAF wind component fcsts can
be found at: http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44069 16 mi87 min SW 18 G 21 51°F 46°F39°F
44039 - Central Long Island Sound 23 mi72 min SW 18 G 23 55°F 3 ft
BRHC3 - 8467150 - Bridgeport, CT 30 mi42 min SW 12 G 20 54°F 51°F1017.9 hPa
NWHC3 - 8465705 - New Haven, CT 32 mi42 min SW 14 G 16 52°F 51°F1018.7 hPa (-2.3)
44040 - Western Long Island Sound 40 mi57 min SW 19 G 25 54°F 2 ft37°F
44025 - LONG ISLAND 33 NM South of Islip, NY 44 mi52 min SW 23 G 27 55°F 56°F7 ft1019.9 hPa (-1.4)
44022 - Execution Rocks 47 mi42 min SSW 18 G 23 55°F 36°F
KPTN6 - 8516945 - Kings Point, NY 49 mi42 min W 17 G 24 53°F 51°F1019.1 hPa (-1.9)
MTKN6 - 8510560 - Montauk, NY 49 mi42 min 56°F 52°F1019.6 hPa (-1.3)

Wind History for Bridgeport, CT
(wind in knots)    EDIT      (on/off)   Help
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Last
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NW9
G18
W6
G13
NW8
G17
W8
G16
NW6
G13
W4
G9
SW3
G8
SW5
G10
W5
G9
W3
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SW2
SW3
G9
W5
G9
NW1
G4
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G5
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G6
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G13
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G16
1 day
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NW11
G17
NW13
G25
NW11
G20
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G22
NW9
G17
NW11
G21
NW7
G15
NW5
G17
W4
G12
W8
G15
W5
G8
W4
G8
W7
G11
NW6
G14
NW6
G13
NW10
G14
W5
G9
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G12
W6
G10
W3
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G10
W7
G16
NW9
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SW4
G7
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G12
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G12
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G17
SW11
G18
SW9
G13
SW6
G9
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G12
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G17
SW9
G13
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G7
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G9
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G17
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SW9
G14
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G15
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G14
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G17
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G16
SW12
G16
SW11
G18
W6
G17
W13
G20
NW12
G24

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Shirley, Brookhaven Airport, NY1 mi1.8 hrsSSW 12 G 2310.00 miFair56°F39°F53%1020.7 hPa
The Gabreski Airport, NY11 mi49 minSSW 13 G 2210.00 miFair57°F37°F49%1020.2 hPa
Islip, Long Island Mac Arthur Airport, NY14 mi1.8 hrsSSW 12 G 2210.00 miPartly Cloudy56°F37°F51%1020.3 hPa

Wind History from HWV (wind in knots)
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Last 24hrW13
G26
W11
G18
W14W9
G17
W6SW6W6SW6W7W4S33SW4S3SW5SW6SW5SW5SW3SW6SW10S13
G22
S12
G23
S14
G22
1 day agoW26
G33
NW19
G33
NW21
G35
NW20
G27
NW18
G25
NW22
G32
NW13
G26
NW13
G20
W8NW11W5W8W8W6W8NW12
G20
NW11
G24
W9
G15
W8W11W12
G22
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W14
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NW12
G25
2 days agoS12S11S14
G19
S13
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S12S11S9
G16
SW11
G20
SW8S6S11S13S13
G23
S13
G24
SW16
G26
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G28
S14
G24
S15
G27
S15
G27
SW15
G25
SW13
G26
W18
G31
W24
G34
W20
G37

Tide / Current Tables for Moriches Coast Guard Station, Long Island, New York
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Moriches Coast Guard Station
Click for Map
Tue -- 03:53 AM EST     0.21 feet Low Tide
Tue -- 06:45 AM EST     Sunrise
Tue -- 08:56 AM EST     2.39 feet High Tide
Tue -- 09:15 AM EST     Moonrise
Tue -- 04:28 PM EST     Sunset
Tue -- 04:32 PM EST     0.07 feet Low Tide
Tue -- 07:08 PM EST     Moonset
Tue -- 09:25 PM EST     1.93 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.20.80.50.30.20.51.21.82.22.42.321.51.10.70.30.10.10.61.21.71.91.91.7

Tide / Current Tables for Shinnecock Canal, Railroad Bridge, New York Current
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Shinnecock Canal
Click for Map
Tue -- 01:44 AM EST     -1.43 knots Max Ebb
Tue -- 05:03 AM EST     0.00 knots Slack
Tue -- 06:44 AM EST     Sunrise
Tue -- 07:38 AM EST     1.49 knots Max Flood
Tue -- 09:14 AM EST     Moonrise
Tue -- 10:59 AM EST     -0.00 knots Slack
Tue -- 02:15 PM EST     -1.63 knots Max Ebb
Tue -- 04:27 PM EST     Sunset
Tue -- 05:57 PM EST     0.00 knots Slack
Tue -- 07:06 PM EST     Moonset
Tue -- 08:08 PM EST     1.11 knots Max Flood
Tue -- 11:16 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1-1.3-1.4-1.1-0.6-00.81.41.51.20.8-0-0.8-1.3-1.6-1.5-1.1-0.600.81.110.80.2

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Northeast    EDIT
Geos

Wind Forecast for New York City/Upton, NY (12,3,4,5)
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Ground Weather Radar Station Upton, NY
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weather_mapweather_map weather_map

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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.