Friday, December15, 2017 L-36.com


Marine Weather and Tides
Norwalk, CT

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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 7:10AMSunset 4:27PM Friday December 15, 2017 9:03 AM EST (14:03 UTC) Moonrise 5:30AMMoonset 4:07PM Illumination 8% Phase: Waning Crescent; Moon at 27 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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ANZ335 Long Island Sound West Of New Haven Ct/port Jefferson Ny- 610 Am Est Fri Dec 15 2017
.small craft advisory in effect from this evening through Saturday afternoon...
Today..W winds around 5 kt. Seas 1 ft or less. Chance of snow this afternoon with vsby 1 to 3 nm.
Tonight..W winds 10 to 15 kt, increasing to 15 to 20 kt with gusts up to 25 kt after midnight. Seas 2 to 3 ft. Snow likely in the evening with vsby 1 to 3 nm.
Sat..W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft.
Sat night..NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft in the evening, then 1 ft or less.
Sun..NW winds around 5 kt, becoming sw around 5 kt in the afternoon. Seas 1 ft or less.
Sun night..SW winds around 5 kt. Seas 1 ft or less. Chance of snow. Chance of rain. Vsby 1 to 3 nm.
Mon..W winds around 5 kt. Seas 1 ft or less.
Mon night..W winds 5 to 10 kt. Seas 1 ft or less.
Tue..SW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 1 ft or less, then around 2 ft in the afternoon.
Tue night..W winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 4 ft.
ANZ300 610 Am Est Fri Dec 15 2017
Synopsis for the long island waters and new york harbor.. High pressure shifts offshore this morning as low pressure over the carolinas tracks to the mid atlantic coast. This low will strengthen as it tracks northeast through the evening and continues out to sea tonight. High pressure then builds in through Sunday. A series of weak low pressure and frontal systems will pass through mid week.

7 Day Forecast for Marine Location Near Norwalk city, CT
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location: 41.1, -73.42     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 151131
afdokx
area forecast discussion
national weather service new york ny
631 am est Fri dec 15 2017

Synopsis
High pressure shifts offshore this morning as low pressure
over the carolinas tracks to the mid atlantic coast. This low
will strengthen as it tracks northeast through the evening and
continues out to sea tonight. High pressure then builds in
through Sunday. A series of weak low pressure and frontal
systems will pass through mid week.

Near term through tonight
Forecast is on track. Some suburban and rural locations have
radiated quite well early this morning, westhampton airport
dropped to 2 degrees at 10z!! Have made some minor adjustments
to hourly t TD the next few hours, which should rebound quickly
after sunrise.

Otherwise, high pressure over the area this morning, will shift
offshore as the energy from both the northern as southern
streams approach from the west consolidating near the mid
atlantic coast this aftn and eve. Weak low pressure currently
over interior portions of the carolinas will gradually track
towards the va n. Carolina coast this morning and continue ne
while strengthening this evening. Guidance is in good agreement
that the low passes outside of the 40n 70w benchmark, but it's
pcpn shield will overspread the area in the form of snow mid-
late afternoon, just in time for the evening commute. 00z
guidance has come in wetter than previous runs, especially at
the coast with qfp values ranging from a tenth to a quarter of
an inch, highest values over eastern long island. There will be
some fluff factor with temps ranging from mid 20s to lower 30s
at the onset although the lower temps will be N and W of nyc,
where lower amounts of pcpn are expected. Most of the lower
hudson valley, northern portions of NE nj and interior SW ct are
expected to see less than an inch with the rest of the area
(except eastern suffolk) ranging between 1 and 2 inches. A
winter weather advsy has been issues for eastern suffolk county
with accumulations of 2-3 inches expected.

Snow tapers off from W to E between 00z and 06z tonight with
clearing and increasing winds as the pressure gradient tightens
between the strengthening departing low, and strong high
pressure over the SE us. Another chilly night with lows in the
ranging from upper teens well inland to mid 20s at the coast.

Short term Saturday
Mean trough axis shifts offshore on Sat with gradual rising
heights aloft. Could see some lake ocean effect streamers come
close to the forecast area, although high res guidance is not
indicating we will be impacted by these. Right now, just expect
an increase in cloud cover during the day. Otherwise, a breezy
westerly flow and weak WAA should help temps rebound into the
30s.

Long term Saturday night through Thursday
Fairly good agreement with the operational models in the long term.

Generally, zonal flow in the upper levels through the middle of next
week, allowing for a progressive pattern.

At the surface, high pressure moves overhead during the day Sunday
and then pushes offshore Sunday night. This allow a warm front to
approach and lift north of the area from Sunday night through Monday
morning. Light overrunning precipitation will occur during this time
frame. Models differ somewhat on timing. Uncertainty will also lie
in precipitation type. Best chances for frozen would be inland
areas, with a rain snow mix along the coast changing to plain rain
late Sunday night. The rain snow line will move north Monday
morning, with plain rain expected everywhere by Monday afternoon.

Little, if any accumulation is expected with QPF amounts of only a
few hundredths of an inch.

Surface cold front then approaches Monday night and pushes through
Tuesday. Warmer temperatures expected on Monday and Tuesday with
warm air advection continuing out ahead of the front in the warm
sector of the frontal system. Temperatures will be slightly above
normal on Monday, and a few degrees warmer on Tuesday. Cooler
temperatures for Wednesday and Thursday.

Conditions will become breezy for Tuesday night into Wednesday as
the pressure gradient tightens between the parent low from the cold
front that tracks into the canadian maritimes and the high pressure
building in from the southwest.

Aviation 12z Friday through Tuesday
High pressure slides east this morning, giving way to an area of low
pressure passing south of the region this evening.

Vfr this morning. Clouds gradually lower and thicken late this
morning and afternoon. Snow then overspread the terminals after
18z, with conditions falling to MVFR and eventually ifr for the
late afternoon and evening. Expect a widespread 1-2 inches,
except at kswf where less than 1 inch is expected.

Snow ends and conditions return toVFR between 03z-06z.

Light and variable winds this morning become westerly at 5-10 kt
this afternoon. Winds increase tonight with some gusts to 20kt after
midnight.

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
BRHC3 - 8467150 - Bridgeport, CT 14 mi52 min N 1.9 G 4.1 18°F 43°F1019.3 hPa
44022 - Execution Rocks 22 mi34 min WSW 1.9 G 5.8 25°F 11°F
KPTN6 - 8516945 - Kings Point, NY 27 mi46 min SSE 2.9 G 4.1 23°F 42°F1020.5 hPa
NWHC3 - 8465705 - New Haven, CT 30 mi46 min NE 4.1 G 6 19°F 43°F1020.3 hPa
44069 33 mi64 min Calm G 3.9 24°F 45°F13°F
44039 - Central Long Island Sound 41 mi71 min NW 3.9 G 5.8 25°F 1 ft
BATN6 - 8518750 - The Battery, NY 42 mi46 min 23°F 46°F1020.3 hPa
ROBN4 - 8530973 - Robins Reef, NJ 46 mi46 min SW 6 G 8.9 23°F 1020.3 hPa

Wind History for Bridgeport, CT
(wind in knots)    EDIT      (on/off)   Help
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Last
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N3
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NW9
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NE1
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SE11
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bridgeport, Sikorsky Memorial Airport, CT16 mi72 minN 010.00 miFair19°F8°F62%1019.8 hPa
White Plains - Westchester County Airport, NY16 mi68 minN 010.00 miFair19°F8°F62%1019.4 hPa
Danbury, Danbury Municipal Airport, CT19 mi71 minN 010.00 miFair14°F8°F77%1019.7 hPa

Wind History from HPN (wind in knots)
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Last 24hrN6N6NW6NW12NW15
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NW11W9W12
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NW13NW10W8NW9NW10NW5NW4NW3Calm
1 day agoNW16
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NW10NW30NW23NW15W21
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3CalmCalmNE3NE3N7N7N8
2 days agoS4SE5S7CalmW5W8W8W7W5W11
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G33

Tide / Current Tables for South Norwalk, Connecticut
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South Norwalk
Click for Map
Fri -- 03:08 AM EST     0.28 feet Low Tide
Fri -- 04:29 AM EST     Moonrise
Fri -- 07:11 AM EST     Sunrise
Fri -- 09:11 AM EST     7.59 feet High Tide
Fri -- 03:07 PM EST     Moonset
Fri -- 03:45 PM EST     -0.18 feet Low Tide
Fri -- 04:25 PM EST     Sunset
Fri -- 09:41 PM EST     6.79 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.72.20.90.30.61.83.55.36.87.67.36.24.72.91.20.1-0.10.623.75.46.56.76.1

Tide / Current Tables for Stamford, Connecticut
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Stamford
Click for Map
Fri -- 03:01 AM EST     0.29 feet Low Tide
Fri -- 04:29 AM EST     Moonrise
Fri -- 07:12 AM EST     Sunrise
Fri -- 09:05 AM EST     7.74 feet High Tide
Fri -- 03:07 PM EST     Moonset
Fri -- 03:38 PM EST     -0.19 feet Low Tide
Fri -- 04:26 PM EST     Sunset
Fri -- 09:35 PM EST     6.92 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.62.10.80.30.823.85.67.17.77.36.24.62.81.10-0.10.72.245.76.76.86.1

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 (9,2,3,4)
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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.