Monday, December10, 2018 L-36.com


Marine Weather and Tides
Groton, CT

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 7:02AMSunset 4:20PM Monday December 10, 2018 7:50 AM EST (12:50 UTC) Moonrise 10:40AMMoonset 8:23PM 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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ANZ330 Long Island Sound East Of New Haven Ct/port Jefferson Ny- 635 Am Est Mon Dec 10 2018
Today..N winds 10 to 15 kt with gusts up to 20 kt. Seas 1 ft or less.
Tonight..N winds 5 to 10 kt. Seas 1 ft or less, then around 2 ft after midnight.
Tue..N winds around 5 kt, becoming W in the afternoon. Seas around 2 ft in the morning, then 1 ft or less.
Tue night..NW winds 5 to 10 kt. Seas 1 ft or less.
Wed..N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft.
Wed night..NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft.
Thu..E winds 5 to 10 kt, becoming se in the afternoon. Seas 1 ft or less.
Thu night..SE winds 5 to 10 kt. Seas 1 ft or less.
Fri..SE winds 5 to 10 kt. Seas 1 ft or less, then around 2 ft in the afternoon.
Fri night..SE winds 10 to 15 kt. Seas 2 to 3 ft. Chance of rain. Vsby 1 to 3 nm after midnight.
ANZ300 635 Am Est Mon Dec 10 2018
Synopsis for the long island waters and new york harbor.. Canadian high pressure remains in control through Thursday as a low passes well south of the region through this afternoon. A cold front moves through mid week. A frontal system and associated low pressure will impact the area at the end of the week into the first half of the weekend.


7 Day Forecast for Marine Location Near Groton city, CT
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location: 41.3, -72.08     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 101147
afdokx
area forecast discussion
national weather service new york ny
647 am est Mon dec 10 2018

Synopsis
Canadian high pressure remains in control through Thursday as a
low passes well south of the region through this afternoon. A
cold front moves through mid week. A frontal system and
associated low pressure will impact the area at the end of the
week into the first half of the weekend.

Near term until 6 pm this evening
Forecast is on track with only minor edits made to reflect
current conditions.

Despite plenty of sunshine, dry and chilly weather will continue to
start the work week as canadian high pressure builds into the
region. Northerly winds will increase this morning as the pressure
gradient briefly tightens between the building high and a departing
low well south of the region. This will primarily serve to make
highs around 40 feel several degrees cooler. These temperatures are
about five degrees below normal for early-mid december.

Short term 6 pm this evening through 6 pm Tuesday
Winds will become light Monday evening as the pressure gradient
weakens, setting the stage for good radiational cooling conditions
across outlying areas. Overnight lows will fall into the mid teens
in typically cooler outlying areas and to around 30 in new york
city.

Another cool and dry day is expected on Tuesday, with high
temperatures a degree or two colder than today. By afternoon, an
upper trough and associated weak surface low crossing the great
lakes will begin to approach the region, but conditions are expected
to remain dry with little appreciable increase in cloud cover
through the daylight hours.

Long term Tuesday night through Sunday
An upper level northern branch trough will move through the
northeast Tuesday night, bringing a cold front through during this
time frame. Moisture seems limited with this system. In addition,
lift also seems limited in the middle to upper layers, with
subsidence noted in the lower layers. So, will keep a dry forecast
Tuesday night into Wednesday. Lower thicknesses on Wednesday will
mean temperatures remain below normal.

Canadian high pressure builds in from the north and sinks south into
new england Wednesday night, pushing off the new england coast
Thursday. Return southeasterly flow and ridging aloft will allow
temperatures to warm for Friday. Highs on Friday will be a few
degrees above normal for this time of year.

With the high pressure off shore, this opens the door for a frontal
system to our west and low pressure to our southwest to approach the
area on Friday. These systems will impact the region beginning late
Friday Friday night for western sections and overspread the entire
area late Friday night. A weak area of low pressure is forecast to
develop along the frontal boundary that approaches the area and will
push off the mid-atlantic coast Saturday, passing south and east of
long island. There is still some uncertainty with the strength and
track of the system. However, at this time, it appears to be warm
enough for precipitation to start off and remain plain rain
throughout the event.

High pressure builds in late Saturday night, with Sunday being dry.

Aviation 12z Monday through Friday
High pressure remains in control. A weak cold front drops from
the N today, but is expected to dissipate before making it to
any of the local terminals.

Other than a few patchy stratocu approaching from the northwest
early this morning,VFR conditions will prevail through the taf
period.

N winds generally 7-12kt highest along the coast. A few gusts
to 15-20 kt cannot be ruled out through 18z or so. Winds
diminish as the afternoon progresses, and lighten further this
evening.

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
LDLC3 - New London Ledge CT - Ledge Light Weather 0 mi36 min N 9.9 G 12 28°F 1019.4 hPa20°F
NLNC3 - 8461490 - New London, CT 4 mi33 min N 4.1 G 6 24°F 47°F1018.8 hPa
MTKN6 - 8510560 - Montauk, NY 19 mi33 min 34°F 41°F1018.4 hPa
44039 - Central Long Island Sound 32 mi51 min N 14 G 16 33°F 46°F2 ft
QPTR1 - 8454049 - Quonset Point, RI 41 mi39 min NNW 9.9 G 12 29°F 43°F1018.5 hPa
NWPR1 - 8452660 - Newport, RI 42 mi39 min N 12 G 17 32°F 38°F1018.1 hPa
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 42 mi61 min N 21 G 25 36°F 49°F4 ft1017.7 hPa (-0.0)26°F
NWHC3 - 8465705 - New Haven, CT 44 mi33 min NE 2.9 G 2.9 27°F 46°F1019.8 hPa
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 46 mi39 min N 8 G 13 29°F 1018.4 hPa
NAXR1 - Narragansett Bay Reserve, RI 46 mi66 min N 7 29°F 1018 hPa19°F
CPTR1 - 8452944 - Conimicut Light, RI 48 mi33 min NNW 14 G 17 31°F 41°F1018.4 hPa

Wind History for New London, CT
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Groton / New London, Groton / New London Airport, CT3 mi55 minN 510.00 miFair23°F17°F78%1018.8 hPa
Westerly, Westerly State Airport, RI15 mi58 minNNW 510.00 miFair25°F18°F75%1018.8 hPa
Montauk, Montauk Airport, NY17 mi57 minN 11 G 19 mi34°F23°F64%1018.5 hPa
Chester, Chester Airport, CT23 mi56 minNNW 510.00 miFair25°F15°F69%1018.3 hPa

Wind History from GON (wind in knots)
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Last 24hrN4CalmNW4NW4W8W8W5W8W7W8SW12SW8
G19
W13NW6NW4NW6NW3CalmCalmN3N5N4N3N5
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NW8NW10NW3NW4W3CalmNE5NW3CalmCalmCalmCalmCalmCalmCalmCalm
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Tide / Current Tables for Silver Eel Pond, Fishers Island, N.Y.
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Silver Eel Pond
Click for Map
Mon -- 05:07 AM EST     0.36 feet Low Tide
Mon -- 07:02 AM EST     Sunrise
Mon -- 09:39 AM EST     Moonrise
Mon -- 10:46 AM EST     2.56 feet High Tide
Mon -- 04:18 PM EST     Sunset
Mon -- 05:49 PM EST     0.06 feet Low Tide
Mon -- 07:23 PM EST     Moonset
Mon -- 11:26 PM EST     2.03 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.91.51.20.90.50.40.511.72.22.52.52.31.91.510.60.20.10.40.91.41.82

Tide / Current Tables for The Race, Long Island Sound, New York Current
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The Race
Click for Map
Mon -- 01:06 AM EST     -0.00 knots Slack
Mon -- 03:58 AM EST     -2.64 knots Max Ebb
Mon -- 07:02 AM EST     Sunrise
Mon -- 07:03 AM EST     0.00 knots Slack
Mon -- 09:39 AM EST     Moonrise
Mon -- 09:53 AM EST     2.55 knots Max Flood
Mon -- 01:08 PM EST     -0.00 knots Slack
Mon -- 04:19 PM EST     -3.07 knots Max Ebb
Mon -- 04:19 PM EST     Sunset
Mon -- 07:23 PM EST     Moonset
Mon -- 07:39 PM EST     0.00 knots Slack
Mon -- 10:24 PM EST     2.47 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.30.1-1.2-2.3-2.6-2.2-1.3-0.11.22.22.52.11.30.2-1.1-2.4-3-2.9-2-0.90.51.72.42.3

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for New York City/Upton, NY (7,2,3,4)
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Ground Weather Radar Station Boston, MA
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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.