Thursday, March23, 2017 L-36.com


Marine Weather and Tides
East Hampton, NY

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:46AMSunset 7:08PM Thursday March 23, 2017 12:17 PM EDT (16:17 UTC) Moonrise 4:03AMMoonset 2:25PM Illumination 16% Phase: Waning Crescent; Moon at 26 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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ANZ350 Moriches Inlet Ny To Montauk Point Ny Out 20 Nm- 1042 Am Edt Thu Mar 23 2017
Today..NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Tonight..NW winds 10 to 15 kt with gusts up to 20 kt...becoming sw 5 to 10 kt after midnight. Seas 2 to 3 ft in the evening... Then 1 ft or less.
Fri..SW winds 15 to 20 kt. Gusts up to 30 kt in the afternoon. Seas around 2 ft...building to 4 to 6 ft in the afternoon.
Fri night..SW winds 20 to 25 kt...diminishing to 15 to 20 kt after midnight. Seas 5 to 7 ft.
Sat..SW winds 10 to 15 kt with gusts up to 20 kt...becoming W 5 to 10 kt in the afternoon. Seas 4 to 6 ft...subsiding to 3 to 4 ft in the afternoon. Chance of light rain in the afternoon.
Sat night..NW winds 10 to 15 kt...becoming ne 15 to 20 kt with gusts up to 25 kt after midnight. Seas 3 to 5 ft. Rain likely.
Sun..E winds 15 to 20 kt. Seas 4 to 6 ft. Rain likely.
Mon..E winds 10 to 15 kt...becoming ne. Seas around 4 ft. Rain likely in the daytime...then chance of rain in the evening.
ANZ300 1042 Am Edt Thu Mar 23 2017
Synopsis for long island waters and new york harbor.. High pressure builds today and passes to the east tonight. A warm front moves across the region Friday. The warm front north of the region Friday night and Saturday will move back southwestward Saturday night into Sunday. A weak low develops along the front and the low and front eventually move east of the region by Monday night of next week.

7 Day Forecast for Marine Location Near East Hampton, NY
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location: 40.61, -71.94     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 231345
afdokx
area forecast discussion
national weather service new york ny
945 am edt Thu mar 23 2017

Synopsis
High pressure builds today, and passes to the east tonight. A
warm front moves across the region Friday. The warm front
north of the region Friday night and Saturday will move back
southwestward Saturday night into Sunday as a back door cold
front. A weak low develops along the front and the low and
front eventually move east of the region by Monday night and
Tuesday of next week. Another cold front approaches for next
Wednesday.

Near term /until 6 pm this evening/
The forecast is on track this morning. Only slight adjustments
were made to temperatures and dewpoints to better match observed
trends.

The center of high pressure builds to our west, and passes to the
south this afternoon. Upper trough tracks further to the east.

A dry, chilly day is expected, with lighter NW winds than what was
observed yesterday. A few gusts are possible in the NW flow, but
winds will diminish this afternoon and back to the west as the high
tracks south.

Temperatures, after a cold start to the day, will rebound through
the 30s, but will peak about 10 degrees below normal, upper 30s to
lower 40s.

Plenty of sunshine is expected.

Short term /6 pm this evening through 6 pm Friday/
Upper ridge to the west flattens tonight and Friday as closed low
moves across the mid section of the country. Surface high pressure
passes east of the area.

A warm front then approaches Friday morning, with a weak shortwave
riding along the top of the ridge, passing across the area Friday.

Winds remain light tonight as they become variable or light s/sw.

With cold airmass in place, temperatures will fall into the 20s
and 30s as high clouds increase. Some locations may radiate
into the teens. Still quite cold.

Increasing moisture riding over the top of the flattening ridge will
approach Friday morning. Light precip associated with warm air
advection is anticipated. Expect a brief period of light
precipitation to push through, with higher coverage NW zones, and
less SE zones per model consensus.

As for ptype, this could be problematic. Depending on when precip
moves in, looks like shortly after 12z, a wintry mix is possible.

Snow, sleet and freezing rain is a good bet, especially away from
the coast. Again, depending on precip onset.

Temps near the coast should be warm enough for plain rain. Qpf
should be under a tenth of an inch, so this is not a big event. But,
slick travel is possible as sfc/road temps may be cold enough for
some light icing.

Long term /Friday night through Wednesday/
Upper levels convey polar jet staying north of the region during
the long term.

Mid levels transition from zonal flow Friday night through Saturday
night to ridging Sunday, which will be followed by an approaching
shortwave on the back end of the ridge. The axis of this trough
moves across on Monday. Behind this shortwave, more quasi-zonal flow
will be established. There will be a larger shortwave approaching
from the northwest for the middle of next week.

At the surface, Friday night through Saturday will be when the
region is in the warm sector. The warm front will be north of the
region. Then, the front will start to shift southwestward, coming
back through the region as a back door cold front Sunday. The front
will stay west of the region and high pressure will stay well east
of the region going through Sunday evening setting up easterly
flow. For late Sunday night, the front will slide back east
with weak low pressure developing along it. The weak low and
front stay near the region Monday with more SE flow developing
ahead of the low and finally these move east of the region
Monday night and Tuesday. Another cold front approaches for the
middle of next week.

Overall, an unsettled weather pattern sets up leading to less
diurnal temperature range as the airmass becomes more cool
maritime from an increasing easterly flow with rounds of light
to perhaps moderate rain at times.

Temperatures are warmest on Saturday with area in the warm sector as
highs are forecast to range from the low 50s to low 60s. Sunday
looks to be the coolest day in the long term with a back door cold
front moving in as highs that day range from the low to mid 40s.

Otherwise the rest of the days feature highs in the upper 40s to
low 50s for most locations. Lows at night through the long term
are pretty consistent, in the upper 30s to low 40s for a
majority of the area.

Aviation /14z Thursday through Monday/
High pressure builds in from the west today, then slides
offshore to the southeast into Friday morning.

Vfr through the TAF period.

Nw-wnw flow with gusts of around 15-20kt at all terminals from
late morning into mid afternoon. Wind gusts should abate by late
afternoon, with winds becoming light and variable at all
terminals this evening. Kjfk could see light ssw-s flow (just
above 5 kt) establish itself by late in the TAF period.

Ny metro enhanced aviation weather support...

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

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 8 mi88 min 26°F 42°F3 ft1035.5 hPa (+1.4)6°F
MTKN6 - 8510560 - Montauk, NY 30 mi48 min 26°F 37°F1034.7 hPa
LDLC3 - New London Ledge CT - Ledge Light Weather 49 mi38 min NNW 15 G 20 29°F -4°F

Wind History for New London, CT
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N11
G18
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G23
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G17
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N7
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S11
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G18
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G8
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G7
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G26
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N5
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G14
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G11
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E1
NE1
NW1
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--
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Montauk, Montauk Airport, NY32 mi24 minW 7 G 16 mi31°F1°F29%1034.4 hPa

Wind History from MTP (wind in knots)
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Last 24hrNW16
G30
NW19
G36
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G28
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NW16
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1 day agoW6W8SW3W7S7SW4SW5Calm5SW6W6CalmCalmCalmCalmCalmSW4W7NW12
G18
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G27
NW21
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G32
2 days agoNW7NW9W8W9W8
G16
W7W3W3W3W5W6W3W4W4NW4W4W4W4W4W3W3W5W6W6

Tide / Current Tables for Promised Land, Napeague Bay, Long Island Sound, New York
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Promised Land
Click for Map
Thu -- 12:30 AM EDT     0.45 feet Low Tide
Thu -- 04:04 AM EDT     Moonrise
Thu -- 06:16 AM EDT     2.26 feet High Tide
Thu -- 06:46 AM EDT     Sunrise
Thu -- 01:05 PM EDT     0.17 feet Low Tide
Thu -- 02:24 PM EDT     Moonset
Thu -- 06:52 PM EDT     2.04 feet High Tide
Thu -- 07:04 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.50.81.31.82.12.32.21.91.61.20.80.40.20.30.81.31.71.921.91.61.31

Tide / Current Tables for Montauk, Fort Pond Bay, Long Island Sound, New York
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Montauk
Click for Map
Thu -- 12:09 AM EDT     0.47 feet Low Tide
Thu -- 04:04 AM EDT     Moonrise
Thu -- 06:25 AM EDT     2.02 feet High Tide
Thu -- 06:45 AM EDT     Sunrise
Thu -- 12:46 PM EDT     0.24 feet Low Tide
Thu -- 02:24 PM EDT     Moonset
Thu -- 06:47 PM EDT     1.82 feet High Tide
Thu -- 07:03 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.60.91.21.51.8221.71.41.10.70.30.20.50.81.21.51.71.81.71.41.10.8

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.