Friday, May26, 2017 L-36.com


Marine Weather and Tides
Groton, CT

Version 3.4
What's New / NOTES
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 5:18AMSunset 8:12PM Friday May 26, 2017 8:24 PM EDT (00:24 UTC) Moonrise 6:20AMMoonset 9:10PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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- 811 Pm Edt Fri May 26 2017
Tonight..NW winds 5 to 10 kt. Seas 1 to 2 ft. Showers early this evening.
Sat..NW winds 5 to 10 kt...becoming S in the afternoon. Seas 1 ft or less.
Sat night..SE winds around 5 kt. Seas 1 ft or less.
Sun..SE winds around 5 kt...becoming S in the afternoon. Seas 1 ft or less.
Sun night..S winds 5 to 10 kt. Seas 1 ft or less.
Mon..SE winds 5 to 10 kt. Seas 1 ft or less. Chance of showers. Chance of tstms in the afternoon.
Mon night..E winds 5 to 10 kt...becoming ne after midnight. Seas 1 ft or less. Chance of tstms in the evening. Chance of showers.
Tue..E winds around 5 kt...becoming sw. Seas 1 ft or less. Chance of showers at night.
Wed..W winds 5 to 10 kt. Seas 1 ft or less. Winds and seas higher in and near tstms.
ANZ300 811 Pm Edt Fri May 26 2017
Synopsis for long island waters and new york harbor.. Low pressure departs the new england coast tonight as weak high pressure settles over the waters. A weak wave of low pressure passes to the south Saturday into Saturday night. A series of weak lows or troughs of low pressure move through the area Sunday through Wednesday.

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 262022
afdokx
area forecast discussion
national weather service new york ny
422 pm edt Fri may 26 2017

Synopsis
Low pressure departs the new england coast tonight as weak high
pressure settles over the region. A weak wave of low pressure
passes to the south Saturday into Saturday night. A series a weak
waves of low pressure or troughs will move through the northeast
Sunday through Thursday. A cold front is expected to move
through the region Friday.

Near term until 6 am Saturday morning
Weak instability and heating within deep cyclonic flow has developed
a few isolated showers this afternoon. Coverage looks to remain
isolated. With loss of heating this evening and now real defined
source for lift, any showers will dissipate.

Heights aloft will continue to rise tonight as low pressure
continues to depart the new england coast. Clouds will dissipate
somewhat, but there is enough low level moisture for at least partly
cloudy skies overnight.

Lows will range from the lower 50s inland to the middle and upper
50s near the coast.

There is a high risk of rip currents into this evening.

Short term 6 am Saturday morning through Saturday night
Main concern for Saturday is with a convectively induced shortwave
that is currently located over the upper mississippi river valley.

Models have not been handling this energy very well as depicted with
dprog dt at h5. However, it appears they are beginning to handle
this feature better with just some timing differences overall. The
shortwave is forecast to quickly traverse through the ohio valley
tonight and then towards the region on Saturday. Prefer to follow a
blend of the nam, 3-km NAM and ecmwf, which brings the shortwave
offshore late afternoon and early evening. The gfs, gefs, and cmc
are a bit slower and do not bring it offshore until overnight
Saturday. Have elected to go with slight chance pops, mainly
for the western half of the area, as better lift and moisture
appears to pass to the south of the region.

Otherwise, mostly cloudy skies are expected with high temperatures
around 70 in nyc and middle and upper 60s elsewhere.

Clouds gradually decrease Saturday night as ridging builds aloft.

Lows will be near normal.

Long term Sunday through Friday
With a delay in the timing of the northern stream longwave
trough and the shortwave rotating through the base of the trough
have delayed the probabilities of showers until late in the day
Sunday; and mainly across the far west and southwest zones.

Aloft, an upper ridge axis will still be west of the region at
12z Sunday with heights rising until the afternoon. At the
surface a weak high will be moving off the coast. Then as the
shortwave moves into the region probabilities increase Sunday
night into Monday. At the surface the will be weak forcing as a
weak cold front moves into the region. A thermal ridge also
moves into the area Monday afternoon. Monday may be one of the
warmer days of next week. With weak surface based instability,
and increasing aloft along with increasing CAPE will have
thunderstorms Monday afternoon into the evening. There is still
some uncertainty with the timing of the upper trough and
shortwave for Sunday and Monday.

The closed upper low and longwave trough will be slow to move
east through the week as a series of shortwaves rotate through
the trough, while at the surface weak lows, or troughs move
through the area. There remains a lot of uncertainty with the
timing and placement of the systems through the upcoming week.

And, there will be a prolonged period of unsettled weather. Will
carry slight chance to low chance probabilities through the
week, although there may be periods of dry weather.

Aviation 20z Friday through Wednesday
Low pres will track SE of nova scotia tonight... And then out to
sea Saturday.

Vfr. Isolated showers into early evening with possible brief
MVFR and gusts to 30 kt.

Gusty W wnw winds to 25 kt into early evening push... Diminishing
into tonight. Light NW winds for Sat morning push. S se
seabreeze development Sat afternoon.

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 0 mi39 min SW 5.1 G 6 57°F 1004.2 hPa55°F
NLNC3 - 8461490 - New London, CT 4 mi54 min S 5.1 G 7 60°F 54°F1004.1 hPa
MTKN6 - 8510560 - Montauk, NY 19 mi54 min 59°F 55°F1004.6 hPa
QPTR1 - 8454049 - Quonset Point, RI 41 mi54 min SE 1.9 G 4.1 58°F 58°F1004.6 hPa
NWPR1 - 8452660 - Newport, RI 42 mi54 min S 1.9 G 2.9 57°F 56°F1004 hPa
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 42 mi94 min 57°F 55°F7 ft1004.1 hPa (+0.9)57°F
NWHC3 - 8465705 - New Haven, CT 44 mi54 min ENE 8.9 G 13 65°F 60°F1005 hPa
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 46 mi54 min Calm G 0 58°F 1004.1 hPa
NAXR1 - Narragansett Bay Reserve, RI 46 mi99 min Calm 58°F 1004 hPa57°F
CPTR1 - 8452944 - Conimicut Light, RI 48 mi54 min SE 1 G 1.9 57°F 57°F1004.3 hPa

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
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Last
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N3
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NE5
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S2
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G6
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G14
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Groton / New London, Groton / New London Airport, CT3 mi28 minN 08.00 miLight Rain57°F55°F93%1004.9 hPa
Westerly, Westerly State Airport, RI15 mi31 minN 010.00 miOvercast61°F57°F87%1004.9 hPa
Montauk, Montauk Airport, NY17 mi90 minSSE 3 mi61°F57°F90%1004.4 hPa
Chester, Chester Airport, CT23 mi29 minN 010.00 miOvercast61°F60°F100%1005.4 hPa

Wind History from GON (wind in knots)
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Last 24hrNE9NE10NE7N3N11N9SE3N5N8N10N7N10NW10NW9NW8W6SW7SW4SW6SW5S3S3CalmCalm
1 day agoE9E5NE4NE5NE8NE8NE8NE9NE10NE12NE10E12NE12E16
G25
E14
G22
E11
G19
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G20
E12NE10NE13NE8
G18
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2 days agoS3CalmS6E4S5E3E4CalmCalmCalmNE4NE5NE8N6E6SE6E9SE12
G20
E14SE17
G22
SE14E12E14E10

Tide / Current Tables for Silver Eel Pond, Fishers Island, N.Y.
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Silver Eel Pond
Click for Map
Fri -- 04:34 AM EDT     -0.43 feet Low Tide
Fri -- 05:20 AM EDT     Sunrise
Fri -- 06:20 AM EDT     Moonrise
Fri -- 10:10 AM EDT     2.69 feet High Tide
Fri -- 04:37 PM EDT     -0.07 feet Low Tide
Fri -- 08:10 PM EDT     Sunset
Fri -- 09:09 PM EDT     Moonset
Fri -- 10:26 PM EDT     3.49 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.41.60.80.1-0.3-0.40.211.82.42.72.62.11.50.90.40-00.51.42.33.13.43.4

Tide / Current Tables for The Race, Long Island Sound, New York Current
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The Race
Click for Map
Fri -- 12:04 AM EDT     -0.00 knots Slack
Fri -- 03:15 AM EDT     -4.42 knots Max Ebb
Fri -- 05:20 AM EDT     Sunrise
Fri -- 06:20 AM EDT     Moonrise
Fri -- 06:33 AM EDT     0.00 knots Slack
Fri -- 09:23 AM EDT     3.72 knots Max Flood
Fri -- 12:40 PM EDT     -0.00 knots Slack
Fri -- 03:38 PM EDT     -3.80 knots Max Ebb
Fri -- 06:42 PM EDT     0.01 knots Slack
Fri -- 08:10 PM EDT     Sunset
Fri -- 09:10 PM EDT     Moonset
Fri -- 09:40 PM EDT     3.87 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.1-1.8-3.5-4.4-4.1-2.9-1.10.92.73.63.52.61.2-0.6-2.4-3.6-3.7-2.8-1.30.62.43.63.83

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 (20,4,5,8)
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Ground Weather Radar Station Boston, MA
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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.