Tuesday, January16, 2018 L-36.com


Marine Weather and Tides
Portland, 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 7:12AMSunset 4:48PM Tuesday January 16, 2018 2:08 PM EST (19:08 UTC) Moonrise 7:46AMMoonset 5:37PM Illumination 0% Phase: New Moon; Moon at 29 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- 105 Pm Est Tue Jan 16 2018
This afternoon..SE winds around 5 kt. Seas 1 ft or less.
Tonight..E winds 5 to 10 kt. Seas 1 ft or less. Rain and snow after midnight.
Wed..NE winds around 10 kt, becoming nw in the afternoon. Seas around 1 ft. Rain with snow likely.
Wed night..NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft.
Thu..W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft.
Thu night..W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 2 to 4 ft.
Fri..W winds 10 to 15 kt. Seas 2 to 3 ft.
Fri night..W winds 10 to 15 kt. Seas around 2 ft.
Sat..SW winds 10 to 15 kt. Seas 1 to 2 ft.
Sat night..W winds 10 to 15 kt. Seas around 2 ft.
ANZ300 105 Pm Est Tue Jan 16 2018
Synopsis for the long island waters and new york harbor.. High pressure will continue to weaken today, allowing low pressure to approach from the west. Meanwhile, a developing weak coastal low will and pass just east of Montauk on Wednesday before moving up the coast into the canadian maritimes Wednesday night. High pressure will then build to the south through the rest of the week.

7 Day Forecast for Marine Location Near Portland, CT
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location: 41.56, -72.63     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 161737
afdokx
area forecast discussion
national weather service new york ny
1237 pm est Tue jan 16 2018

Synopsis
High pressure continues to move offshore today, allowing low
pressure to approach from the west, passing just north of the
area tonight. Meanwhile, a developing coastal low will develop
and pass just east of montauk during the day Wednesday, then
moves up the coast into the canadian maritimes Wednesday night.

High pressure will then build to the south through Friday,
moving into the western atlantic this weekend. Low pressure will
then approach from the west early next week.

Near term until 6 pm this evening
Minor adjustments made to forecast based on latest conditions.

High pressure continues to push offshore today. This will allow
weak low pressure and associated cold front to approach from
the west.

Most of any light snow or flurries today should be fall across
far northwestern portion of the CWA (lower hudson valley and ne
nj). Little if any snow accumulation. As such, have backed up
the start time of the winter weather advisory for portions of nj
and the lower hudson valley til 4 pm. Otherwise, expect cloudy
skies today. Temperatures today climb into the lower and mid
30s, warmer closer to the coast.

Short term 6 pm this evening through 6 pm Wednesday
Winter weather advisories in effect for northeast new jersey,
the lower hudson valley, southern connecticut and the northern
portion of nyc for late this afternoon through Wednesday.

Low pressure and associated cold front approach the western
portion of the CWA tonight, with the low passing just north of
the region. Meanwhile, a second area of low pressure develops
south of long island tonight, and passes east of montauk early
Wednesday afternoon. The combination of these two system will
bring precipitation to the region. Highest confidence for snow
is north and west of nyc, while the potential for mixed p-types
reduces confidence for the city into long island and coastal
connecticut. Expecting the precipitation to remain mostly all
snow through midnight, then as the developing low approaches, it
should bring some warmer air into the area to change
precipitation over to rain or a rain snow mix across much the
long island, nyc and portions of coastal ct. The changing p-type
has made forecasting snowfall amounts somewhat difficult,
especially right along the rain snow line. For now, thinking the
highest snowfall totals will be across the lower hudson valley
and southern ct, with the exception of southern new london
county. These areas have 4-6 inches of snow forecast. Across ne
nj and the northern portions of nyc, looking at 3-4 inches. The
southern portion of nyc and nassau, 2-3 inches are expected. And
across suffolk county on long island, up to 1 inch. The
heaviest precipitation is expected to fall Tuesday night into
Wednesday morning, then taper off from west to east during the
mid to late afternoon and early evening. 16 00z forecast
guidance has come into better agreement with the track of the
low, however a shift to the west, would increase the chance for
more rain across nyc and ct and potentially increase snowfall
amounts across the interior. A track farther offshore, would
increase snowfall amounts closer to the coast.

Lows tonight fall into the middle and upper 20s across the
interior, while coastal locations fall into the lower 30s. On
Wednesday, highs climb into the lower 30s across the interior,
with middle 30s closer to the coast.

Long term Wednesday night through Tuesday
On the heels of an upper trough passing offshore early Thursday, a
progressive southern branch of the polar jet will become dominant
across the lower 48, with a a gradual warmup as the air mass
transitions to pacific origin. Daytime highs on Thursday will be or
just above near freezing, rising to the upper 40s and lower 50s by
Sunday Monday.

Conditions will be mainly dry as a large area of high pressure over
the lower mississippi valley translates slowly east and passes to
the south through the week and offshore this weekend.

A southern branch storm system then approaches late in the weekend
into early next week, with a surface low forecast to track up into
the great lakes. The trailing cold front moves through Monday night.

This is likely to be a rain event with a deep layered southerly flow
preceding the system, but with cold sfc air initially there could be
some mixed precip inland late Sunday night Monday morning inland nw
of nyc.

Aviation 18z Tuesday through Sunday
High pressure retreats to the northeast today. An area of low
pressure approaches from the south into tonight, then tracks to near
cape cod by early Wednesday afternoon.

Conditions expected to gradually lower to MVFR this afternoon
and evening, then lower to ifr overnight as precipitation
becomes steadier. Precipitation will largely hold off until
after sunset, except at kswf where occasional snow showers will
be possible through the day. Expect all snow at kswf. A
rain snow mix or perhaps all rain will be possible for the
remainder of the terminals, with all rain most likely at kisp
and kgon. All sites may receive a quick accumulation of snow as
the system departs Wednesday morning.

Light and variable winds become SE at less than 10 kt at city
terminals this afternoon, then light and variable again this
evening, before becoming NE at less than 10 kt tonight.

Ny metro enhanced aviation weather support...

detailed information... Including hourly TAF wind component fcsts can
be found at: http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NWHC3 - 8465705 - New Haven, CT 24 mi51 min WSW 4.1 G 5.1 29°F 34°F1031.5 hPa
44039 - Central Long Island Sound 29 mi69 min ENE 5.8 G 7.8 30°F
NLNC3 - 8461490 - New London, CT 32 mi51 min SSW 1.9 G 2.9 35°F 37°F1031.2 hPa
LDLC3 - New London Ledge CT - Ledge Light Weather 34 mi44 min ESE 2.9 G 2.9 33°F 1033.4 hPa27°F
BRHC3 - 8467150 - Bridgeport, CT 40 mi57 min ESE 5.1 G 6 29°F 34°F1030.8 hPa

Wind History for New Haven, CT
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NE5
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N16
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Meriden, Meriden Markham Municipal Airport, CT11 mi76 minN 010.00 miOvercast30°F21°F69%1031.5 hPa
Hartford, Hartford-Brainard Airport, CT12 mi76 minN 010.00 miOvercast0°F0°F%1031.6 hPa
Chester, Chester Airport, CT14 mi74 minS 410.00 miOvercast36°F24°F65%1030.8 hPa
New Haven, Tweed-New Haven Airport, CT23 mi76 minE 510.00 miOvercast32°F21°F66%1031.2 hPa

Wind History from MMK (wind in knots)
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Last 24hr655555554NW33CalmCalmSE6SE4W3CalmCalmCalmW4CalmCalmCalmCalm
1 day agoN7NW86N55NW4555NW76N8N764656546665
2 days agoNW13
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N11
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Tide / Current Tables for Portland, Connecticut
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Portland
Click for Map
Tue -- 12:28 AM EST     1.79 feet High Tide
Tue -- 06:45 AM EST     Moonrise
Tue -- 07:12 AM EST     0.13 feet Low Tide
Tue -- 07:14 AM EST     Sunrise
Tue -- 12:34 PM EST     2.39 feet High Tide
Tue -- 04:36 PM EST     Moonset
Tue -- 04:46 PM EST     Sunset
Tue -- 07:53 PM EST     -0.14 feet Low Tide
Tue -- 09:18 PM EST     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.81.81.61.310.70.30.10.30.81.522.32.42.11.81.30.90.40-0.10.20.71.3

Tide / Current Tables for Higganum Creek, Connecticut River, Connecticut
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Higganum Creek
Click for MapNote: Tidal information only applies during low river stages.

Tue -- 06:29 AM EST     0.16 feet Low Tide
Tue -- 06:45 AM EST     Moonrise
Tue -- 07:13 AM EST     Sunrise
Tue -- 11:58 AM EST     2.54 feet High Tide
Tue -- 04:36 PM EST     Moonset
Tue -- 04:46 PM EST     Sunset
Tue -- 07:05 PM EST     -0.12 feet Low Tide
Tue -- 09:18 PM EST     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
21.81.51.20.80.50.20.20.71.31.92.42.52.421.61.10.60.1-0.10.10.61.21.7

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 (14,3,4,5)
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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.