Friday, October20, 2017 L-36.com


Marine Weather and Tides
Guilford Center, 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 7:07AMSunset 6:02PM Friday October 20, 2017 8:39 AM EDT (12:39 UTC) Moonrise 7:44AMMoonset 6:55PM Illumination 0% Phase: New Moon; Moon at 0 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- 728 Am Edt Fri Oct 20 2017
Today..NW winds 10 to 15 kt. Seas 2 to 3 ft.
Tonight..NW winds 5 to 10 kt. Seas 1 ft or less.
Sat..N winds around 5 kt, becoming S in the afternoon. Seas 1 ft or less.
Sat night..SW winds 5 to 10 kt. Seas 1 ft or less.
Sun..SW winds around 5 kt, becoming S in the afternoon. Seas 1 ft or less.
Sun night..S winds 5 to 10 kt. Seas 1 ft or less.
Mon..S winds 5 to 10 kt. Seas 1 ft or less.
Mon night..S winds 10 to 15 kt. Seas 1 ft or less, then around 2 ft after midnight. Chance of showers after midnight.
Tue..S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 4 ft. Chance of showers. Vsby 1 to 3 nm in the afternoon.
Tue night..S winds 15 to 20 kt. Seas 2 to 4 ft. Chance of showers in the evening, then showers likely after midnight. Vsby 1 to 3 nm in the evening.
ANZ300 728 Am Edt Fri Oct 20 2017
Synopsis for the long island waters and new york harbor.. High pressure builds in through Saturday, sliding offshore Sunday and Monday. A slow moving frontal system will then approach the waters Tuesday with a cold frontal passage early Wednesday.

7 Day Forecast for Marine Location Near Guilford Center, CT
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location: 41.27, -72.67     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 201136
afdokx
area forecast discussion
national weather service new york ny
736 am edt Fri oct 20 2017

Synopsis
Mild high pressure dominates through Monday. A slow moving
frontal system will then approach the area Tuesday into Tuesday
night with a cold frontal passage by early Wednesday. The front
is slow to depart farther away with a wave of low pressure
developing along it and approaching the area mid into late next
week.

Near term until 6 pm this evening
730 am edt update - forecast on track no changes as cold front
has pushed offshore and high pressure is building in. NW flow
prevails through the day with perhaps some gusts in the upper
teens late this morning and aftn. With no sensible change in
airmass and mostly clear skies, highs will be similar to
yesterday, mainly upper 60s to lower 70s except mid 70s in the
ny nj metro area.

Short term 6 pm this evening through 6 pm Saturday
Ridging continues to build into the region with weak WAA through
the short term providing dry and unseasonably warm conditions.

Even though optimal conditions will exist for radiational
cooling tonight, clear skies and light calm winds, the WAA will
limit its impact. 925mb temps at 12z this morning are progged
to be between 10c and 12c, and increase to 15-16c by 12z sat.

Sunny conditions expected on Sat with just few-sct cirrus. Highs
will remain above normal ranging in the mid to upper 70s except
on the twin forks of LI and SE coastal ct.

Long term Saturday night through Thursday
Warm weather continues through Monday as the jet stream remains
north of the region with upper level ridging. At the surface,
the dominant feature will be high pressure eventually moving
offshore and the resulting s-sw flow. Mainly clear sky
conditions are expected to continue through Sunday.

Clouds increase Monday into Monday night ahead of the next
frontal system. The next chance of rain showers arrives late
Monday night into Tuesday, when a deep upper level trough
approaches from the west.

The trough further deepens Tuesday along the eastern seaboard
with increasing meridional flow. This will give plentiful
moisture to a developing frontal system at the surface. The
frontal system will be approaching the region Tuesday into
Tuesday night with the region being in the warm sector to the
east of the low with strengthening southerly flow, thereby
increasing warm air advection. Precipitable water increases to
near 1.5 inches from the moisture advection. This is much above
normal for this time of year. According to okx sounding
climatology, it would be above the 90th percentile. Some
moderate to heavy rainfall will be possible.

The cold front moves across Wednesday morning, with a
substantial decrease in precipitable water thereafter to less
than 1 inch. The front slows down and is slow to depart away
from the region. The numerical forecast models show weak low
pressure development along it and the low approaching the region
mid into late next week, with rain shower chances continuing.

Temperatures are expected to be well above normal this weekend
through Tuesday with a gradual decline thereafter. Highs this
weekend through Tuesday are forecast to be well into the 70s
with lows trending to be well into the 50s and near 60 for some
locations along the coast and nyc. The highs are forecast to be
more in the 60s for next Wednesday and next Thursday.

Aviation 12z Friday through Tuesday
Vfr through the TAF period as high pressure builds in from the
west.

Good confidence in the wind forecast with the typical 20
degrees of variability either side of forecast through the day.

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
44039 - Central Long Island Sound 9 mi175 min WNW 12 G 16 63°F 2 ft
NWHC3 - 8465705 - New Haven, CT 13 mi52 min NW 6 G 8 57°F 66°F1019.5 hPa
BRHC3 - 8467150 - Bridgeport, CT 28 mi58 min NNW 4.1 G 5.1 55°F 65°F1019.2 hPa
NLNC3 - 8461490 - New London, CT 31 mi52 min N 5.1 G 7 56°F 64°F1018.6 hPa
LDLC3 - New London Ledge CT - Ledge Light Weather 32 mi40 min NW 9.9 G 12 57°F 1018.3 hPa (+1.8)46°F
MTKN6 - 8510560 - Montauk, NY 41 mi52 min 62°F 63°F1018.4 hPa
44069 45 mi100 min WNW 9.7 G 14 59°F 61°F51°F

Wind History for New Haven, CT
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
New Haven, Tweed-New Haven Airport, CT11 mi47 minNNW 810.00 miPartly Cloudy57°F46°F69%1019.5 hPa
Chester, Chester Airport, CT12 mi45 minN 010.00 miFair55°F46°F72%1019.3 hPa
Meriden, Meriden Markham Municipal Airport, CT19 mi47 minWNW 610.00 miFair53°F45°F74%1019.4 hPa

Wind History from HVN (wind in knots)
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Last 24hrCalmSW3SW7SW11
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SW945Calm4CalmCalmN4NW4NW10NW8
1 day agoCalmW3CalmSW75S8S7S6SW5S3CalmSW5SW5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoN7N9N833SW6W5S7SW10SW5SW6S10SW8
G15
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W7W6SW5W84W6W56

Tide / Current Tables for Guilford Harbor, Connecticut
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Guilford Harbor
Click for Map
Fri -- 05:46 AM EDT     0.10 feet Low Tide
Fri -- 07:08 AM EDT     Sunrise
Fri -- 07:43 AM EDT     Moonrise
Fri -- 12:02 PM EDT     6.02 feet High Tide
Fri -- 06:01 PM EDT     Sunset
Fri -- 06:15 PM EDT     -0.19 feet Low Tide
Fri -- 06:55 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.65.13.92.61.30.30.10.71.83.24.55.665.64.53.11.70.5-0.200.92.13.54.7

Tide / Current Tables for Branford, Branford River, Connecticut
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Branford
Click for Map
Fri -- 05:54 AM EDT     0.10 feet Low Tide
Fri -- 07:09 AM EDT     Sunrise
Fri -- 07:44 AM EDT     Moonrise
Fri -- 12:08 PM EDT     6.80 feet High Tide
Fri -- 06:02 PM EDT     Sunset
Fri -- 06:23 PM EDT     -0.19 feet Low Tide
Fri -- 06:55 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.45.84.63.11.60.50.10.61.83.456.26.86.45.33.72.10.7-0.1-00.92.33.85.2

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 (8,2,3,4)
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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.