Wednesday, September26, 2018 L-36.com


Marine Weather and Tides
Niantic, CT

Version 3.4
What's New / NOTES
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 6:39AMSunset 6:39PM Wednesday September 26, 2018 7:04 AM EDT (11:04 UTC) Moonrise 7:52PMMoonset 7:58AM Illumination 97% Phase: Waning Gibbous; Moon at 16 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- 353 Am Edt Wed Sep 26 2018
Today..S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt late this morning and afternoon. Seas 2 to 3 ft. Chance of showers.
Tonight..SW winds 10 to 15 kt, becoming nw after midnight. Seas 2 to 3 ft. Tstms likely in the evening. Chance of showers.
Thu..N winds 10 to 15 kt with gusts up to 20 kt, becoming ne 5 to 10 kt in the afternoon. Seas 2 to 3 ft.
Thu night..E winds 5 to 10 kt. Seas around 2 ft. Chance of showers.
Fri..E winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 ft or less. Chance of showers.
Fri night..W winds 5 to 10 kt. Seas 1 ft or less.
Sat..W winds around 5 kt. Seas 1 ft or less.
Sat night..SW winds 5 to 10 kt, becoming nw after midnight. Seas 1 ft or less.
Sun..NW winds 5 to 10 kt, becoming W in the afternoon. Seas 1 ft or less.
Sun night..NW winds 5 to 10 kt, becoming N after midnight. Seas 1 ft or less. Winds and seas higher in and near tstms.
ANZ300 353 Am Edt Wed Sep 26 2018
Synopsis for the long island waters and new york harbor.. A cold front will approach and move through tonight. High pressure returns on Thursday and then builds to the north on Friday as a wave of low pressure passes to the south. A stronger high pressure builds from the west over the weekend.


7 Day Forecast for Marine Location Near Niantic, CT
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location: 41.23, -72.24     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 260957
afdokx
area forecast discussion
national weather service new york ny
557 am edt Wed sep 26 2018

Synopsis
A warm front will slowly move north of the area tonight,
followed by a cold front Wednesday and Wednesday night. High
pressure returns on Thursday and then builds to the north on
Friday as a wave of low pressure passes to the south. A stronger
high pressure builds from the west over the weekend and then
offshore early next week.

Near term until 6 pm this evening
The main story today will be the potential for severe
thunderstorms as a cold front approaches from the west. Prior to
its approach, showers and thunderstorms will develop and move
over the area, mainly across long island and connecticut early
this morning. The primary focus for these showers and
thunderstorms is the warm front that is still in the vicinity.

As the warm front lifts north, coverage should decrease until
the cold front approaches later this afternoon. However, the
chance for showers and thunderstorms remains until then.

The cold front will approach this afternoon. Out ahead of the
front, a line of showers and thunderstorms is forecast to
develop. Some of these showers and thunderstorms will be strong,
with gusty winds of 30-40 mph, and possibly severe, with
damaging wind gusts of up to 60 mph. Lifted indices in the -4 to
-6 range support the potential for severe, given the cold front
as the primary lifting mechanism. There will be a decent amount
of instability with MUCAPE values in the 1000-2000 j kg range.

Also associated with these storms will be brief, heavy rainfall.

The rainfall is not expected to be nearly as high as yesterday.

However, southern connecticut has very low one hour flash flood
guidance of 0.25" hr or less thanks to the very heavy rain that
fell yesterday. Despite the fact that the rainfall will be
lower today as compared to yesterday, flash flooding will once
again be possible, mainly for connecticut.

There is a high rip current risk for the atlantic beaches
today.

Short term 6 pm this evening through Thursday night
The threat for severe storms will continue through about
midnight across the tri-state area, until the cold front pushes
off the east coast. Also, the continued threat for flash
flooding for connecticut will continue. Thereafter, chances for
showers and thunderstorms decreases as high pressure builds in
from the northwest.

The cold front will remain just to our south, and a slight
chance for showers may continue across mainly long island for
Thursday. A weak area of low pressure will develop along the
frontal boundary, and unsettled weather will come back into the
picture for Thursday night into Friday.

There is a low rip current risk for the atlantic beaches on
Thursday.

Long term Friday through Tuesday
The low moves offshore into Friday night with a stronger high
building into the region for the rest of the weekend. This high
will likely move offshore early next week with the approach of
the next frontal system.

Temperatures should average near normal through the long term period
with highs in the upper 60s and lower 70s and nighttime
temperatures mainly in the lower and middle 50s.

Aviation 10z Wednesday through Sunday
Warm front will lift north of the terminals this morning, followed
by a cold front this evening and tonight.

Heavy rain showers have re-developed east of nyc. These showers
should linger through the early morning hours, mainly across kisp,
kbdr and kgon. We should then see a break in the precipitation,
before additional showers and thunderstorms return to the region
this afternoon and evening as a cold front approaches and moves
across the area. Some of these storms will be capable of gusty winds
and heavy rain.

Winds will continue to diminish overnight. Light and variable
winds will be likely across the lower hudson valley. S-sw winds
of 10 to 15 kt expected today, then become NW behind the cold
front after 00z tonight.

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 10 mi34 min SSW 11 G 13 71°F 1018.5 hPa70°F
NLNC3 - 8461490 - New London, CT 12 mi34 min SSW 1.9 G 5.1 70°F 68°F1017.3 hPa
MTKN6 - 8510560 - Montauk, NY 19 mi34 min 71°F 69°F1017.4 hPa
44039 - Central Long Island Sound 23 mi49 min S 5.8 G 7.8 72°F 71°F1 ft
NWHC3 - 8465705 - New Haven, CT 36 mi34 min S 4.1 G 4.1 70°F 72°F1017 hPa
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 38 mi74 min S 12 G 14 70°F 67°F6 ft1018.1 hPa (-1.7)70°F

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
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NE4
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G10
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1 day
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N6
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NE6
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E4
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N5
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N4
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N6
G9
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G10

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Groton / New London, Groton / New London Airport, CT12 mi68 minS 93.00 miThunderstorm in Vicinity Rain Fog/Mist71°F71°F100%1017.6 hPa
Chester, Chester Airport, CT18 mi69 minS 6 G 121.75 miLight Rain72°F71°F100%1017.6 hPa
Montauk, Montauk Airport, NY20 mi70 minVar 5 mi71°F71°F100%1018.4 hPa

Wind History from GON (wind in knots)
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Last 24hrNE10E12E10
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S18S15S13S13S13SW9SW9S13S9
1 day agoN7N7NE16
G20
NE14
G24
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G21
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G26
NE16NE15
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G21
NE10NE13NE13NE12NE9NE9NE10NE10NE10NE10NE9NE10NE12NE11NE10
2 days agoNE5N5N6N6N6N5CalmCalmSW4CalmNE4CalmCalmN3N3CalmCalmCalmN3N6N6N7N8N9

Tide / Current Tables for Plum Gut Harbor, Plum Island, Long Island, New York
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for The Race, Long Island Sound, New York Current
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map and Satellite Images
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wmap_A
GOES Local Image of    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 Upton, NY
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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.