Tuesday, September17, 2019 L-36.com


Marine Weather and Tides
Groton, CT

Version 3.4
NOTICE
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:29AMSunset 6:56PM Tuesday September 17, 2019 4:43 PM EDT (20:43 UTC) Moonrise 8:54PMMoonset 9:34AM Illumination 86% Phase: Waning Gibbous; Moon at 18 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- 329 Pm Edt Tue Sep 17 2019
Tonight..NE winds 5 to 10 kt. Seas 1 to 2 ft.
Wed..NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Wed night..NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Thu..NE winds 5 to 10 kt. Seas 2 to 3 ft.
Thu night..SE winds around 5 kt, becoming nw around 5 kt after midnight. Seas around 2 ft.
Fri..W winds around 5 kt. Seas 2 to 3 ft.
Fri night..W winds 5 to 10 kt. Seas 2 to 3 ft.
Sat..NW winds 5 to 10 kt, becoming sw in the afternoon. Seas around 2 ft in the morning, then 1 ft or less.
Sat night..SW winds around 5 kt. Seas 1 ft or less.
Sun..SW winds 5 to 10 kt. Seas 1 ft or less.
Sun night..SW winds around 10 kt. Seas 1 ft or less.
ANZ300 329 Pm Edt Tue Sep 17 2019
Synopsis for the long island waters and new york harbor.. High pressure will dominate the weather pattern through 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 171926
afdokx
area forecast discussion
national weather service new york ny
326 pm edt Tue sep 17 2019

Synopsis
High pressure will dominate the weather pattern through the
weekend. A cold front may cross the region early next week.

Near term through Wednesday
Surface high pressure will remain north of the region tonight.

Meanwhile, an upper level trough will remain northeast of the
area. The combination of an increasing northeast flow and a
shortwave rounding the base of the trough will result in an
increase in cloud cover late tonight through Wednesday morning.

Tonight, will start off mostly clear skies but skies become
partly to mostly cloudy towards daybreak and continue through
much of the morning and into the afternoon, with some clearing
expected late. Despite the partly to mostly cloudy skies,
conditions will remain dry.

Temperatures may be tricky tonight especially across the
eastern half of the area, as initially clear skies will allow
for some radiational cooling before clouds increase. For now,
think the thicker cloud cover will move in late enough that
temperatures will be able to fall off quickly this evening
before remaining nearly steady towards daybreak. This will
result in lows ranging from the mid to upper 40s in typically
cooler outlying locations to around 60 in new york city.

Temperatures on Wednesday will then remain several degrees below
normal with a good deal of cloud cover and persistent northeast
flow. Highs will be in the 60s and lower 70s.

There is a moderate risk of rip currents at atlantic ocean
beaches for the remainder of the evening.

There is a high risk of rip currents at atlantic ocean beaches
on Wednesday due to long period swells from distant hurricane
humberto.

Short term Wednesday night
High pressure near the region Wednesday night will result in
clearing skies and dry conditions. Lows Wednesday night will
fall into the 40s and 50s.

Long term Thursday through Tuesday
Psuedo-omega blocked pattern late week with the region on the
northeast side of eastern us upper ridging in between deep western
us troughing and western atlantic troughing interacting with
hurricane humberto. This blocking eventually breaks down, with upper
ridging sliding eastward into the area this weekend, as humberto and
western atlantic troughing gradually shear ne. Western us troughing
gradually slides northeast towards the region Monday and through
Tuesday. At the surface, canadian high pressure builds overhead
Thursday, with sprawling high pressure establishing itself east of
the mississippi river for late week into the start of the weekend. A
weak backdoor cold front does appear to slide through the region
Saturday, with high pressure slowly sliding east Sunday into Monday.

Tranquil and moderating temps to near seasonable levels Thu and then
above normal Fri (mid to upper 70s), as center of high pressure
gradually slides to the south of the region. Potential for good
radiational cooling conds Thu night, with lows in the 40s across
outlying areas. A weak cold front move through Friday night, with n
flow early, giving way to return flow Saturday night into Monday
ahead of approaching shortwave cold front. Temps Saturday into
Monday should rise well above seasonable levels(lower to mid 80s),
with increasing humidity levels Sunday into Monday.

Next chance for measurable precip appears to come late Monday into
Monday night with approach of next trough, with better model
agreement on approaching shortwave energy on Monday and slide
through Tuesday.

Nhc track forecasts for humberto have been consistent in slowly
tracking it east and then northeast through the next 5 days, well
out to sea. The likely indirect impacts will be dangerous
rip longshore currents and rough surf at atlantic ocean beaches
starting Wednesday as long period swells and wind waves begin to
increase. Potential for high surf (5-9ft)late Thu into Fri as the
most energetic E SE swells arrive from humberto. Beach flooding and
erosion issues likely during the times of high tide Wed thru fri
with E to W sweep, but potential for dune erosion and localized
washovers looks to be low. Refer to the national hurricane center
for official forecast information on humberto.

Aviation 19z Tuesday through Sunday
High pressure continues to build in from the north through
Wednesday, while hurricane huberto tracks well offshore over the
western atlantic. This will keep the area under a prolonged
period of northerly flow.

MainlyVFR. There is a low chance of an MVFR ceiling in the
morning.

Northeast winds around 10 kts for the remainder of this
afternoon, veering a bit this evening at less than 10 kt, then
increasing to 10 to 15 kt on Wednesday. Gusts 15 to 20 kt
possible Wednesday, mainly east of the nyc terminals.

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 mi44 min N 12 G 16 71°F 1018.4 hPa (-0.3)45°F
NLNC3 - 8461490 - New London, CT 4 mi62 min NE 4.1 G 8 70°F 69°F1019 hPa
MTKN6 - 8510560 - Montauk, NY 19 mi62 min 69°F 70°F1019.3 hPa
QPTR1 - 8454049 - Quonset Point, RI 41 mi62 min NNE 12 G 16 1019.7 hPa
NWPR1 - 8452660 - Newport, RI 42 mi62 min NNE 13 G 19 67°F 63°F1019.6 hPa
NWHC3 - 8465705 - New Haven, CT 44 mi56 min NE 9.9 G 14 73°F 71°F1018.2 hPa
NAXR1 - Narragansett Bay Reserve, RI 46 mi119 min NE 12 72°F 1020 hPa53°F
PRUR1 46 mi62 min 68°F 49°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 46 mi56 min ENE 9.9 G 13 68°F 1020.3 hPa
CPTR1 - 8452944 - Conimicut Light, RI 48 mi56 min NE 11 G 15 67°F 69°F1019.7 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 mi1.8 hrsN 1210.00 miPartly Cloudy74°F46°F38%1019 hPa
Westerly, Westerly State Airport, RI15 mi51 minN 810.00 miA Few Clouds72°F48°F43%1019.4 hPa
Montauk, Montauk Airport, NY17 mi50 minVar 5 mi70°F50°F49%1019.7 hPa
Chester, Chester Airport, CT23 mi49 minNNE 9 G 1510.00 miFair73°F42°F33%1019.6 hPa

Link to 5 minute data for KGON

Wind History from GON (wind in knots)
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Last 24hrSW11------Calm--N6----------CalmN4N4----N8N12N15
G21
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N12NE11
1 day agoSW8W7W5W4------------NE3----CalmCalm------NW3NW5W5NW9NW5N6
2 days agoS12S13S11S13S10--------------------NW3--NW11NW64--SW11SW9SW10

Tide / Current Tables for Silver Eel Pond, Fishers Island, N.Y.
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Silver Eel Pond
Click for Map
Tue -- 06:15 AM EDT     0.44 feet Low Tide
Tue -- 06:30 AM EDT     Sunrise
Tue -- 09:33 AM EDT     Moonset
Tue -- 11:46 AM EDT     2.68 feet High Tide
Tue -- 06:46 PM EDT     0.41 feet Low Tide
Tue -- 06:54 PM EDT     Sunset
Tue -- 08:53 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.52.21.81.310.60.50.61.11.72.32.62.72.52.11.61.10.80.50.40.71.31.92.2

Tide / Current Tables for The Race, Long Island Sound, New York Current
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The Race
Click for Map
Tue -- 01:52 AM EDT     -0.00 knots Slack
Tue -- 04:58 AM EDT     -2.87 knots Max Ebb
Tue -- 06:30 AM EDT     Sunrise
Tue -- 08:01 AM EDT     0.01 knots Slack
Tue -- 09:33 AM EDT     Moonset
Tue -- 10:56 AM EDT     2.71 knots Max Flood
Tue -- 02:07 PM EDT     -0.01 knots Slack
Tue -- 05:19 PM EDT     -2.97 knots Max Ebb
Tue -- 06:54 PM EDT     Sunset
Tue -- 08:28 PM EDT     0.01 knots Slack
Tue -- 08:53 PM EDT     Moonrise
Tue -- 11:19 PM EDT     2.54 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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21-0.2-1.5-2.5-2.9-2.4-1.4-01.32.32.72.31.30.2-1.1-2.3-2.9-2.8-1.9-0.60.71.82.5

Weather Map
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wmap_A
GEOS 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 (16,3,4,5)
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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.