Monday, March27, 2017 L-36.com


Marine Weather and Tides
New London, CT

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 6:36AMSunset 7:10PM Monday March 27, 2017 12:32 PM EDT (16:32 UTC) Moonrise 6:34AMMoonset 6:47PM Illumination 0% Phase: New Moon; Moon at 0 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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ANZ340 Peconic And Gardiners Bays- 951 Am Edt Mon Mar 27 2017
.dense fog advisory in effect until noon edt today...
Today..SE winds 5 to 10 kt...becoming sw early this afternoon. Waves 1 ft or less. Areas of dense fog late this patchy fog this afternoon. Rain developing. Vsby 1 nm or less...improving to 1 to 3 nm this afternoon.
Tonight..SE winds around 5 kt...becoming E after midnight. Waves 1 ft or less. Chance of rain after midnight.
Tue..E winds around 5 kt. Waves 1 ft or less. Chance of rain.
Tue night..NE winds 5 to 10 kt. Waves 1 ft or less. Rain likely.
Wed..N winds around 10 kt. Waves 1 ft or less.
Wed night..N winds 10 to 15 kt with gusts up to 20 kt. Waves 1 to 2 ft.
Thu..N winds 10 to 15 kt...becoming nw around 5 kt in the afternoon...then becoming sw in the evening...becoming se after midnight. Waves 1 to 2 ft in the morning...then 1 ft or less.
Fri..SE winds 5 to 10 kt...becoming E 10 to 15 kt. Waves 1 ft or less...then around 2 ft in the afternoon and evening...then 1 ft or less after midnight. Chance of rain.
ANZ300 951 Am Edt Mon Mar 27 2017
Synopsis for long island waters and new york harbor.. A warm front will lift N into the waters today. Weak low pres will approach on Tue...followed by a cold front Tue night. High pressure will build in Wed and Thu. Another low will approach on Fri.

7 Day Forecast for Marine Location Near New London, CT
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location: 41.26, -72.11     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 271427
afdokx
area forecast discussion
national weather service new york ny
1027 am edt Mon mar 27 2017

Synopsis
A warm front will slowly lift into the region today. A cold
front with a wave of low pressure passes through the region
Tuesday night. High pressure builds in for Wednesday and
Thursday, and shifts offshore Thursday night. A low pressure
system approaches from the central united states Thursday night
and impacts the region Friday and Saturday. High pressure
returns for Sunday.

Near term /until 6 pm this evening/
Issued dense fog advisory for long island until 12 noon. Vsby at
all ASOS stations was 1/4 mile or less even at 14z. Rain moving
in from the west and warm front moving onshore may improve vsby
but this remains to be seen.

Also adjusted pop based on trends of radar and in hrrr and gfs
lamp, with one band of rain moving across from late morning
into the early afternoon, followed by scattered showers this
afternoon.

Adjusted high temps upward slightly across long island and
southern ct, with a little more widespread lower 50s.

Short term /6 pm this evening through 6 pm Tuesday/
Convergence aloft in the dry layer does not seem conducive to
much rainfall tonight. As a result, only low chances for rain
were included in the forecast. If rain does develop, it may turn
out to be mainly sprinkles or light drizzle. Surprisingly big
differences exist between the NAM and GFS for Tuesday. The nam
holds off on the deep lift, and therefore the bulk of the rain,
for the entire day. The GFS brings in rain by morning. The ecmwf
supports the nam, by keeping the bulk of the rain with the main
shortwave. The GFS appears to be kicking off convection over
pennsylvania that brings residual energy in. The forecast sides
with the drier solutions, although there may be some showers or
pockets of light rain with weak vorticity advection and a moist
airmass. A blend of the models was used for temperatures.

Long term /Tuesday night through Sunday/
A southern stream shortwave over the oklahoma and kansas area
this Monday morning will weaken and track to the mid atlantic
coast Tuesday and offshore Tuesday night. Meanwhile, a northern
stream longwave trough moving through south central canada moves
east and passes into northern new england Tuesday night. There
is still some differences in whether or not the two systems will
phase, with consensus for the south stream to be more
progressive and remain separate, and farther south than other
models, while dampening and exiting the mid atlantic. The
southern movement will keep an associated warm front to the
south. This southern and separate solution has been the trend
the last several runs. With higher confidence in precipitation
affecting the area, mainly the southern half of the cwa, will
have likely probabilities Tuesday night.

A northwest flow will persist across the region as surface
high pressure builds to the north and the upper northern stream
trough moves slowly off the northeast coast through Thursday
night. The surface high weakens Thursday night as another
southern stream shortwave approaches, however the upper ridge is
holding with the axis shifting east of the area Friday. The
southern stream system will also be weakening as the wave tracks
east. Have brought in chances late Thursday night into Friday
and this may be too quick if the ridge holds. The weakening low
will re develop off the mid atlantic coast Saturday with chances
of precipitation remaining into Saturday night. Cold air will
be in place across the northern tier and some of the
precipitation may fall as snow or a rain snow mix.

Weak high pressure returns for Sunday into Monday.

Aviation /14z Monday through Friday/
A warm from approaches from the south for late this morning.

This front will lift slowly through during the late
morning/early afternoon hours, possibly washing out across or
just north of the area.

Lower ceilings, drizzle, and fog continue this morning. Expect
widespread sub-ifr at most terminals.

Ifr conditions could last through much of the period, especially
to the north and east of the nyc terminals due to the
uncertainty with the timing and final placement of the warm
front. Confidence has lowered regarding improving visibilities
and ceilings from 18z to 22z across most terminals. In any event
ceilings and visibilities will be low again for Monday night
into Tuesday morning with exact timing and magnitude in
question.

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
LDLC3 - New London Ledge CT - Ledge Light Weather 4 mi32 min ENE 8 G 8.9 43°F 42°F
NLNC3 - 8461490 - New London, CT 7 mi44 min E 1 G 2.9 44°F 40°F1018.5 hPa
MTKN6 - 8510560 - Montauk, NY 17 mi44 min 47°F 39°F1018.3 hPa
44039 - Central Long Island Sound 30 mi77 min NE 9.7 G 9.7 39°F 2 ft
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 39 mi42 min 47°F 43°F4 ft1018.7 hPa (-1.4)47°F
NWHC3 - 8465705 - New Haven, CT 42 mi44 min NNE 7 G 9.9 38°F 39°F1018.7 hPa
QPTR1 - 8454049 - Quonset Point, RI 44 mi44 min SW 2.9 G 5.1
NWPR1 - 8452660 - Newport, RI 45 mi44 min SSE 6 G 8.9 43°F 39°F1018.9 hPa
NAXR1 - Narragansett Bay Reserve, RI 48 mi107 min SSW 2.9 44°F 1020 hPa44°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 48 mi44 min WSW 4.1 G 6

Wind History for New London, CT
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NE2
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N4
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N5
G8

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Groton / New London, Groton / New London Airport, CT6 mi36 minE 50.25 miFog44°F43°F96%1018.5 hPa
Montauk, Montauk Airport, NY16 mi3.6 hrsESE 6 mi43°F43°F100%1020.6 hPa
Westerly, Westerly State Airport, RI18 mi39 minSE 80.25 miLight Rain Fog46°F46°F100%1018.8 hPa

Wind History from GON (wind in knots)
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Last 24hrE12E10E12E14E13E12E9E8E14
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E8E8NE7E7NE7NE7E11E10E10E9E7E8E5
1 day agoN8SE8E4N14N10E6N6N8NE5NE4NE8N4CalmCalmN3N4NW3N4N7NE12NE13NE9
G18
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2 days agoS17SW15SW16SW12SW13SW10S5SW6SW5SW84CalmS3SW3SW3CalmCalmNE3CalmCalmCalmN5NE9NE6

Tide / Current Tables for Little Gull Island, Long Island, New York
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Little Gull Island
Click for Map
Mon -- 03:22 AM EDT     -0.23 feet Low Tide
Mon -- 06:34 AM EDT     Moonrise
Mon -- 06:39 AM EDT     Sunrise
Mon -- 09:48 AM EDT     2.52 feet High Tide
Mon -- 03:40 PM EDT     -0.23 feet Low Tide
Mon -- 06:46 PM EDT     Moonset
Mon -- 07:08 PM EDT     Sunset
Mon -- 10:06 PM EDT     2.64 feet High Tide
Mon -- 10:59 PM EDT     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.50.80.2-0.2-0.10.311.62.12.42.52.21.710.4-0.1-0.20.10.81.52.12.52.62.5

Tide / Current Tables for The Race, Long Island Sound, New York Current
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The Race
Click for Map
Mon -- 02:29 AM EDT     -3.62 knots Max Ebb
Mon -- 05:39 AM EDT     0.00 knots Slack
Mon -- 06:34 AM EDT     Moonrise
Mon -- 06:39 AM EDT     Sunrise
Mon -- 08:31 AM EDT     3.34 knots Max Flood
Mon -- 11:46 AM EDT     -0.00 knots Slack
Mon -- 02:50 PM EDT     -3.71 knots Max Ebb
Mon -- 05:58 PM EDT     0.00 knots Slack
Mon -- 06:46 PM EDT     Moonset
Mon -- 07:08 PM EDT     Sunset
Mon -- 08:53 PM EDT     3.51 knots Max Flood
Mon -- 10:59 PM EDT     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1-2.5-3.5-3.5-2.6-1.10.62.23.23.22.51.2-0.4-2.1-3.3-3.7-3-1.701.83.13.52.91.8

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.