Thursday, March30, 2017 L-36.com


Marine Weather and Tides
Niantic, CT

Version 3.4
What's New / NOTES
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 6:31AMSunset 7:13PM Thursday March 30, 2017 2:36 AM EDT (06:36 UTC) Moonrise 8:25AMMoonset 10:21PM Illumination 8% 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- 943 Pm Edt Wed Mar 29 2017
Overnight..N winds 10 to 15 kt. Seas 1 to 2 ft.
Thu..N winds around 10 kt...becoming W in the afternoon. Seas 1 to 2 ft.
Thu night..SW winds around 5 kt...becoming se after midnight. Seas 1 to 2 ft.
Fri..E winds 5 to 10 kt...increasing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 1 ft or less...then around 2 ft in the afternoon. Rain.
Fri night..E winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft. Rain. Vsby 1 to 3 nm in the evening.
Sat..NE winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Rain likely...mainly in the morning.
Sat night..N winds 10 to 15 kt with gusts up to 30 kt... Diminishing to 5 to 10 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. Chance of rain in the evening.
Sun..NW winds 5 to 10 kt. Seas 1 to 2 ft in the morning...then 1 ft or less.
Mon..NW winds 5 to 10 kt...becoming S in the afternoon and evening...then becoming se after midnight. Seas 1 ft or less.
ANZ300 943 Pm Edt Wed Mar 29 2017
Synopsis for long island waters and new york harbor.. High pressure will remain over the region through Thursday. Low pressure will impact the area Thursday night through Saturday. High pressure builds in for Sunday through Monday night. Another area of low pressure affects the region Tuesday. High pressure builds back on Wednesday.

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 300538
afdokx
area forecast discussion
national weather service new york ny
138 am edt Thu mar 30 2017

Synopsis
High pressure will remain over the region through Thursday. Low
pressure will impact the area Thursday night through Saturday.

High pressure builds in for Sunday through Monday night.

Another area of low pressure affects the region Tuesday. High
pressure builds back on Wednesday.

Near term /until 6 am this morning/
High pressure continues to build to the north overnight.

Scattered clouds, and continued winds late this evening and
possibly into the overnight will have an impact on overnight
lows. Assuming north winds of at least 5 kt continue, ideal
radiational cooling may not occur. Raised lows slightly in
spots. Overnight lows will range from the upper 30s to the upper
20s.

Short term /6 am this morning through 6 pm Friday/
High pressure drifts across the forecast area on Thursday,
resulting in fair weather and light winds. Expect mid and high
clouds to move in from the west during the afternoon and
evening. A blend of the guidance, which was in good agreement,
was used for temperatures.

Clouds continue to thicken and lower Thursday night as low
pressure approaches the region. Pops gradually increase
overnight. Will cap pops at high chance for now. Precipitation
will generally be plain rain, however a wintry mix may be
possible across the lower hudson valley and connecticut.

Temperatures on Thursday will only reach the upper 40s and
lower 50s. Lows Thursday night will fall into the 30s.

Long term /Friday night through Wednesday/
Low pressure system will track east on Friday. As this storm
approaches, precipitation will spread across the area from west to
east. Rain may come down moderate to heavy at times Friday into
Friday night as a secondary low develops off the mid atlantic
coast. This storm may produce anywhere between 1 to 1.5 inches
of rainfall from Friday into Saturday morning. While there could
be some urban and poor drainage nuisance flooding, impacts on
rivers and streams is not expected.

After some lingering showers Saturday morning, surface high pressure
builds in thereafter, keeping the area dry through the rest of the
weekend into Monday. High pressure moves offshore Monday night,
allowing for another low to affect the area Tuesday.

Temperatures during the long term will be seasonable, with the
exception of Friday and Saturday.

Aviation /06z Thursday through Monday/
Vfr conditions are expected through much of the TAF period as
high pressure builds in through Thursday. MVFR conditions move
in at the 30 hr TAF sites at the end of the TAF period as low
pressure approaches Thursday night. Light rain is expected after
09z, except a mix of rain and ice pellets for kswf.

Gusts have, for the most part, died off. There may be occasional
gusts to 20 kt, mainly for the city terminals, over the next
hour or two, but they should not be prevailing. Sustained winds
diminish to 10 kt or less overnight into Thursday morning. Sea
breezes develop Thursday afternoon with wind speeds remaining
below 10 kt. Some interior terminals may become light and
variable for Thursday.

Sea breeze timing Thursday could be off by 1-2 hours.

Outlook for 06z Friday through Monday
Thursday night MainlyVFR, chance of rain/snow mix inland and
rain near coast, highest chances overnight.

Friday MVFR/ifr conditions developing in rain for metro
terminals, with ifr in wintry mix possible for northern
terminals in the morning. MVFR/ifr conditions in rain in the
afternoon. SE winds g20-25 kt at the coast.

Friday night and Saturday MVFR/ifr in rain with gradual
improvement by Saturday afternoon/evening. E/ne winds g20-30kt
at coastal terminals.

Sunday-Monday Vfr.

Marine
Northerly winds continue overnight as low pressure tracks out
to sea and high pressure builds into the region. Winds
overnight are expected to generally remain below SCA levels,
however a few isolated gusts to 25 kt may be possible,
especially on the eastern waters. Winds and seas will remain
below small craft conditions through Thursday night.

Winds should remain below 25 kt through Friday morning. An
approaching frontal system will increase the pressure gradient
across the waters and bring wind gusts along the ocean waters to 25
kt to 30 kt Friday afternoon into Saturday. Peconic and gardiner's
bays may see gusts 25 kt to 30 kt late Friday night into Saturday,
while the back bays may see 25 kt gusts Friday night. Winds diminish
Saturday night, and remain below SCA criteria for the rest of the
long term.

Waves build to 5 to 8 ft on the ocean Friday night into Saturday
morning, then diminish Saturday night, but should remain above 5 ft
through Sunday morning. Thereafter, waves remain below 5 ft through
the rest of the long term.

Hydrology
Between 1 and 1.5 inches of QPF is possible from Thursday night
through Saturday morning. While there could be some urban and poor
drainage nuisance flooding, impacts on rivers and streams is not
expected.

Tides/coastal flooding
An approaching low pressure system will likely bring some minor
coastal flood impacts to vulnerable coastal communities during
the Friday night high tide. Tidal departures of 1 to 1 1/2 ft
are needed to reach minor flood levels and 2 to 2 1/2 ft for
moderate flood levels during that time.

Okx watches/warnings/advisories
Ct... None.

Ny... None.

Nj... None.

Marine... None.

Synopsis... Bc/fig
near term... Bc/pw
short term... Bc
long term... Fig
aviation... Jp
marine... Bc/fig/pw
hydrology... Bc/fig
tides/coastal flooding...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LDLC3 - New London Ledge CT - Ledge Light Weather 10 mi37 min NNW 8.9 G 11 39°F 23°F
NLNC3 - 8461490 - New London, CT 12 mi49 min N 4.1 G 6 38°F 41°F1021.9 hPa
44039 - Central Long Island Sound 23 mi52 min NW 7.8 G 9.7 40°F 1 ft
NWHC3 - 8465705 - New Haven, CT 36 mi49 min NW 5.1 G 7 39°F 41°F1023.4 hPa
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 38 mi47 min 41°F 42°F4 ft1022 hPa (-0.5)27°F

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
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N6
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G10
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E6
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G7
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N3
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N7
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N4
NE1

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Groton / New London, Groton / New London Airport, CT12 mi41 minN 510.00 miFair37°F21°F54%1021.8 hPa
Montauk, Montauk Airport, NY20 mi1.7 hrsNNW 10 mi41°F24°F51%1022.5 hPa

Wind History from GON (wind in knots)
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Last 24hrN6N6N10N7N8N11N15
G20
N14N15N9N11NW12N12
G18
NW16
G22
N15
G24
NW15
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N14
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N8
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G27
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N11N6N5
1 day agoN6E3NE3E3SE4E8E8E7E9E11SE7SE11E6E5E6NE6E7E7E3NE7N5NE6N7N7
2 days agoE7NE7NE7E11E10E10E9E7E8E5SE3S3CalmNW7S6W3SW4W4NW6NW9N7N6N6N4

Tide / Current Tables for Plum Gut Harbor, Plum Island, Long Island, New York
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Plum Gut Harbor
Click for Map
Thu -- 06:25 AM EDT     -0.52 feet Low Tide
Thu -- 06:35 AM EDT     Sunrise
Thu -- 08:25 AM EDT     Moonrise
Thu -- 12:20 PM EDT     2.89 feet High Tide
Thu -- 06:34 PM EDT     -0.22 feet Low Tide
Thu -- 07:12 PM EDT     Sunset
Thu -- 10:21 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.43.12.51.70.80.1-0.5-0.40.21.122.62.92.82.41.710.3-0.1-0.20.31.32.22.9

Tide / Current Tables for The Race, Long Island Sound, New York Current
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The Race
Click for Map
Thu -- 01:33 AM EDT     -0.00 knots Slack
Thu -- 04:44 AM EDT     -4.11 knots Max Ebb
Thu -- 06:34 AM EDT     Sunrise
Thu -- 07:56 AM EDT     0.00 knots Slack
Thu -- 08:24 AM EDT     Moonrise
Thu -- 10:49 AM EDT     3.59 knots Max Flood
Thu -- 02:02 PM EDT     -0.00 knots Slack
Thu -- 05:06 PM EDT     -3.73 knots Max Ebb
Thu -- 07:11 PM EDT     Sunset
Thu -- 08:10 PM EDT     0.01 knots Slack
Thu -- 10:20 PM EDT     Moonset
Thu -- 11:09 PM EDT     3.67 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.51-0.8-2.6-3.8-4.1-3.3-1.70.11.93.23.62.91.70.1-1.7-3.1-3.7-3.3-2-0.31.533.7

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 (2,6,7,8)
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Ground Weather Radar Station Upton, NY
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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.