Marine Weather and Tides
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 5:19AM||Sunset 8:10PM||Tuesday May 23, 2017 1:06 AM EDT (05:06 UTC)||Moonrise 4:09AM||Moonset 5:33PM||Illumination 7%|
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|ANZ237 Block Island Sound- 716 Pm Edt Mon May 22 2017 |
.small craft advisory in effect until 4 am edt Tuesday...
Tonight..S winds 10 to 15 kt...diminishing to 5 to 10 kt after midnight. Gusts up to 20 kt. Seas 2 to 3 ft. Areas of fog. Showers. A chance of tstms this evening... Then a slight chance of tstms after midnight. Vsby 1 to 3 nm...decreasing to 1 nm or less after midnight.
Tue..NE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 nm or less.
Tue night..E winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 nm.
Wed..E winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
Wed night..E winds around 10 kt. Gusts up to 20 kt after midnight. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 to 3 nm.
Thu..E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 nm.
Thu night..E winds 10 to 15 kt with gusts up to 20 kt... Becoming se 5 to 10 kt after midnight. Seas 3 to 5 ft. Patchy fog. Showers likely. Vsby 1 to 3 nm.
Fri..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Showers likely. Vsby 1 to 3 nm.
Fri night..W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers.
Sat..NE winds 5 to 10 kt. Seas 2 to 4 ft.
Sat night..S winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height...which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height.
|ANZ200 716 Pm Edt Mon May 22 2017 |
Synopsis for massachusetts and rhode island coastal waters.. A cold front will move across the waters Tuesday morning. A series of low pres systems will track near the waters late Tuesday into Friday with periods of unsettled weather. For information on possible hazardous weather beyond the 24-36 hour forecast period...please visit www.weather.gov/boston and follow the current hazards link above the map on the left.
7 Day Forecast for Marine Location Near Norwich, CTHourly EDIT Help
Area Discussion for - New York City/Upton, NY  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 kokx 230440|
area forecast discussion
national weather service new york ny
1240 am edt Tue may 23 2017
A weak frontal system passes through the region tonight, stalling
in the mid atlantic region Tuesday. Weak high pressure builds
in for Tuesday. Meanwhile, a wave of low pressure will move
along the frontal boundary, south of the region, Tuesday and
Tuesday night. Weak high pressure builds in on Wednesday,
followed by low pressure Thursday into Friday. High pressure
returns for the beginning half of the upcoming holiday weekend,
but low pressure may bring some unsettled weather during the
Near term /until 6 am this morning/
Minor updates this evening to reflect current temperature and
dew point trends. The weak frontal boundary is now across
eastern ct and long island. Any patchy dense fog should
gradually improve through the morning from west to east
following the frontal boundary. Previous discussion follows.
Widespread rain has moved to the east of the area. Have
adjusted pops downward based on the latest radar trends. Weak
wave of low pressure near the DELMARVA continues to slide to the
east. High resolution models continue to show this system
linking up with the front as it moves to the east tonight.
Latest trends however have any redevelopment of rain staying
offshore as deepest moisture and lift likely remain to the east.
Have therefore lowered pops after midnight to account for these
Gradual clearing is expected behind the front. Temperatures
remain nearly steady for much of the night, but could fall into
the upper 40s/lower 50s NW of the city towards daybreak.
Short term /6 am this morning through 6 pm Wednesday/
The cold frontal boundary will remain stalled to the south,
through the mid atlantic region and DELMARVA Tuesday, and weak
mid and low level ridging builds. Will keep the area dry through
most of the day and then bring in probabilities late in the day
to the south as a wave begins to move along the frontal
The wave passes to the south with some differences in placement
Tuesday and Tuesday night with the NAM just about totally dry
while the GFS is a little farther north. At this time leaned a
little more closer to the GFS and brought chance across about
the south half of the area.
The wave does pass through quickly and precipitation may be|
ended across the eastern zones by Wednesday morning.
Long term /Wednesday night through Monday/
Weak high pressure builds in behind a departing offshore low on
Wednesday. Only a slight chance of a shower in the morning mainly
over long island. Partly sunny otherwise, and a blend of mav/nam mos
looked good for high temperatures.
The next system to bring rainfall to the area arrives late Wednesday
night, with rainfall being most likely Thursday into Thursday night.
Went a little cooler than most guidance, particularly over western
zones as a triple point low approaches, but the associated warm
front extending to its east might only push through some of the
eastern zones, if at all. Some elevated instability should be
present, so have included isolated tstms for thurs and thurs night.
Also included areas of fog for late weds night into thurs morning
with the warm front not too far off to the south.
For Friday, the storm exits to the ne, but is still close enough for
a chance of showers, especially over the NE zones. Some lower level
instability combined with a cold pool aloft may also result in a
tstm over parts of ct as well.
Weak high pressure then returns for Saturday. Will go with a dry
forecast and slightly above normal temperatures for now. The timing
of the next low pressure system is still uncertain at this point.
Some overrunning rainfall could move in by daybreak Sunday. The
system would figure to move slowly enough for Monday to be affected
as well. Will go with chc pop for now for both days.
Aviation /06z Tuesday through Saturday/
A front will cross the area tonight, as a series of weak lows
track south of long island into Tuesday evening.
Ifr/lifr conditions should continue through at least 6z, and
probably last until after the front passes (4-9z from W to e).
It appears conditions should improve fairly rapidly behind the
front, so expect most areas to beVFR by around 12z.
Light and variable winds shift to the n-ne at 10kt behind the
front. An afternoon seabreeze is probable at all but
kswf/khpn/kteb - where winds should be mainly light and
variable all day Tuesday. Occasional gusts to 15-20kt are
possible Tuesday 12-16z Tuesday.
Ny metro enhanced aviation weather support...
detailed information, including hourly TAF wind component fcsts,
can be found at:
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|NLNC3 - 8461490 - New London, CT||11 mi||48 min||W 1 G 1.9||57°F||55°F||1013.6 hPa|
|MTKN6 - 8510560 - Montauk, NY||33 mi||48 min||57°F||52°F||1013.9 hPa|
|QPTR1 - 8454049 - Quonset Point, RI||36 mi||48 min||SSW 2.9 G 4.1|
|PTCR1 - 8452951 - Potter Cove, Prudence Island, RI||40 mi||48 min||W 1.9 G 5.1||57°F||1013.8 hPa|
|NWPR1 - 8452660 - Newport, RI||40 mi||48 min||WSW 4.1 G 5.1||56°F||55°F||1013.8 hPa|
|NAXR1 - Narragansett Bay Reserve, RI||40 mi||81 min||SW 5.1||56°F||1014 hPa||56°F|
|44039 - Central Long Island Sound||40 mi||81 min||NE 3.9 G 3.9||56°F||56°F|
|PVDR1||41 mi||48 min||SSE 6 G 6||57°F||1013.5 hPa||57°F|
|FOXR1 - 8454000 - Providence, RI||41 mi||48 min||S 5.1 G 6||57°F||60°F||1013.1 hPa|
|CPTR1 - 8452944 - Conimicut Light, RI||41 mi||48 min||S 6 G 8||56°F||59°F||1013.9 hPa|
|NWHC3 - 8465705 - New Haven, CT||47 mi||48 min||NNE 7 G 8||56°F||59°F||1014.2 hPa|
|FRXM3||49 mi||48 min||58°F||57°F|
Wind History for New London, CT(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Groton / New London, Groton / New London Airport, CT||13 mi||70 min||N 0||2.50 mi||Fog/Mist||57°F||55°F||96%||1013.5 hPa|
|Willimantic, Windham Airport, CT||17 mi||74 min||N 4||6.00 mi||Fog/Mist||57°F||55°F||93%||1014.3 hPa|
|Westerly, Westerly State Airport, RI||19 mi||73 min||N 0||2.00 mi||Fog/Mist||57°F||57°F||100%||1014.1 hPa|
|Chester, Chester Airport, CT||24 mi||71 min||NW 3||0.15 mi||Fog||55°F||55°F||100%||1014.2 hPa|
Wind History from GON (wind in knots)
|1 day ago||Calm||Calm||NE||Calm||N||Calm||NE||N||Calm||S||S||S||S||S||S||S||S||S||S||S||S||SW||SW||S|
|2 days ago||N|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
Click for Map
Tue -- 02:27 AM EDT -0.10 feet Low Tide
Tue -- 04:08 AM EDT Moonrise
Tue -- 05:22 AM EDT Sunrise
Tue -- 08:13 AM EDT 3.32 feet High Tide
Tue -- 02:31 PM EDT 0.02 feet Low Tide
Tue -- 05:32 PM EDT Moonset
Tue -- 08:08 PM EDT Sunset
Tue -- 08:35 PM EDT 4.20 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|The Race |
Click for Map
Tue -- 12:45 AM EDT -3.65 knots Max Ebb
Tue -- 04:01 AM EDT 0.00 knots Slack
Tue -- 04:09 AM EDT Moonrise
Tue -- 05:22 AM EDT Sunrise
Tue -- 06:50 AM EDT 3.11 knots Max Flood
Tue -- 10:06 AM EDT -0.00 knots Slack
Tue -- 01:07 PM EDT -3.39 knots Max Ebb
Tue -- 04:11 PM EDT 0.00 knots Slack
Tue -- 05:31 PM EDT Moonset
Tue -- 07:09 PM EDT 3.49 knots Max Flood
Tue -- 08:07 PM EDT Sunset
Tue -- 10:25 PM EDT -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of Northeast EDIT
Wind Forecast for New York City/Upton, NY (1,6,7,8)(on/off)  Help
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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.