Friday, December15, 2017 L-36.com


Marine Weather and Tides
Southold, NY

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 7:08AMSunset 4:23PM Friday December 15, 2017 10:26 PM EST (03:26 UTC) Moonrise 5:26AMMoonset 4:03PM Illumination 5% 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
    EDIT      (on/off)   Help
ANZ330 Long Island Sound East Of New Haven Ct/port Jefferson Ny- 950 Pm Est Fri Dec 15 2017
.small craft advisory in effect through Saturday evening...
Tonight..W winds 5 to 10 kt, increasing to 15 to 20 kt with gusts up to 30 kt. Seas 1 ft or less, then 2 to 4 ft after midnight. Snow, mainly this evening. Vsby 1 to 3 nm until early morning.
Sat..W winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 3 to 5 ft.
Sat night..NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 2 to 4 ft.
Sun..NW winds 5 to 10 kt with gusts up to 20 kt, becoming W in the afternoon. Seas 1 ft or less.
Sun night..SW winds around 5 kt. Seas 1 ft or less. Chance of rain and snow after midnight.
Mon..SW 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 15 to 20 kt. Seas 3 to 5 ft.
Wed..W winds 20 to 25 kt. Seas 3 to 5 ft.
Wed night..NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Seas 2 to 4 ft.
ANZ300 950 Pm Est Fri Dec 15 2017
Synopsis for the long island waters and new york harbor.. Low pressure departs out to sea overnight. A series of weak low pressure and frontal systems will pass through the area this weekend through mid week.

7 Day Forecast for Marine Location Near Southold, NY
   Hourly   EDIT   Help
location: 41.08, -72.45     debug


Area Discussion for - New York City/Upton, NY
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kokx 160241
afdokx
area forecast discussion
national weather service new york ny
941 pm est Fri dec 15 2017

Synopsis
Low pressure departs overnight. A series of weak low pressure
and frontal systems will pass through the area this weekend
through mid week.

Near term until 6 am Saturday morning
Back edge of accumulating snow will push east of E LI SE ct
through around 11 pm.

Generally 1 to 2 inches have fallen across the nyc nj metro,
westchester and SW coastal ct, with 2 to 3 inches across nassau
and suffolk counties.

An additional 1 2 to 1 inch possible for extreme SE ct and e
suffolk before coming to an end.

Otherwise... Vigorous shortwave pivots east overnight with low
pressure departing out to sea. Clearing and increasing winds
are expected overnight 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 6 am Saturday morning through Saturday night
Polar upper low pivots southeast into new england on Sat and
offshore Saturday night. Wnw CAA low flow over the great lakes,
accompanied by shortwave lift and left front of 150 kt jet
streak, should be enough to extend light snow shower activity
into the region later Sat morning through Sat afternoon. A
dusting is possible in spots, particularly NW hills.

Otherwise, breezy and chilly on Sat with abundant cloud cover
and glancing caa. Temps will likely hold in the lower to mid 30s
for much of the region, with windchills in the 20s.

Shortwave slides east Sat night, with high pressure building in
from the west. This will have snow showers tapering from W to e
early in the evening, with potential for good radiational
cooling conds for outlying areas later Sat night. Temps should
fall into the teens for outlying areas, with mid-upper 20s for
urban centers.

Long term Sunday through Friday
Models in good agreement with a fairly progressive upper
pattern in place through this period, with a series of weak
frontal systems moving through the region Sunday night through
midweek as a muted northern stream longwave trough slides from
the great lakes into the northeast.

First system of note will be Sunday night into Monday as the
closed low currently over baja mexico, shears towards the ne
ahead of a developing western us trough. Models differing in
the strength of this energy and amounts of moisture drawn
northward, but potential exists for a light precip event Sunday
night into Monday morning. Thermal profiles suggest a start as
snow or wintry mix, transitioning to rain for nyc li, but
potentially remaining a wintry mix for the interior into Monday
morning. Too early for specific details on this light precip
event, but potential exists for hazardous travel conditions
n&nw of nyc LI for Monday morning commute.

Thereafter, models in fairly good agreement with the broad bu
shallow northern stream trough approaching the region on
Tuesday and sliding through during the midweek. At the surface,
the primary low pressure system rides through quebec ontario
with trailing cold front approaching the region Tuesday night.

Overall, appears to be mainly a light QPF event for the Monday
night into Tuesday evening period, due to limited interaction
between northern and southern stream. Thermal profile suggests
precip would be mainly liquid, but could be dealing with
freezing rain across interior Monday night as cold air
typically has a tough time scouring our in this setup.

Upper trough swings through the NE Tue night into Wed with a
glancing shot of modifying arctic air in the wake of the cold
front for Wed thu.

Upper flow flattens and even becomes a bit ridged for Thursday
ahead of the next northern stream trough digging into the upper
plains, which should allow for a moderation in temps ahead of
next potential frontal system.

Aviation 02z Saturday through Wednesday
Low pressure quickly passes to the east overnight as it
deepens.

Any lingering MVFR or ifr conditions eastern terminals (kisp,
kgon) will quickly improve as the snow departs before 4 or 5z.

Otherwise,VFR has returned and skies clear overnight. Expect
increasing clouds during the day Saturday. Ceilings between 3-5
kft expected from late morning through the afternoon. Local
MVFR or ifr conditions cannot be ruled out in snow showers.

Westerly winds 5 to 10 kt increase overnight. Occasional gusts
to around 20 kt are possible overnight, otherwise speeds remain
10 to 15 kt.

Westerly winds increase Saturday after 13-15z, with speeds 15 to 20
kt and gusts 20 to 30 kt.

Outlook for 00z Sunday through Wednesday
Sat night Vfr.

Sun Vfr during the day. Chance MVFR in a mix of -ra -sn towards
midnight.

Mon Low chance MVFR in -ra for coastal terminals, light wintry
mix inland. Improvement as the day progresses.

Tue MVFR possible with a slight chance of showers.

Wed Vfr. NW winds g20-30kt

Marine
The pressure gradient will continue to tighten overnight as low
pres passes S and E of the waters. SCA conds are expected to
develop tonight and continue through sat, with the potential for
occasional gale force gusts on mainly the ocean waters late
tonight through Saturday morning.

Winds and waves diminish below SCA Saturday night as high
pressure builds in.

Next chance for SCA conditions possibly as early as late
Tuesday Tue eve ahead of approaching cold front, but higher
likelihood of widespread SCA Tuesday night through Wednesday
night with tight pressure gradient and strong CAA in wake of
cold front. Gales are possible during this time frame.

Hydrology
No significant hydrologic impacts expected.

Equipment
Nyc NOAA weather radio station kwo-35 (162.55 mhz) is off the
air for an extended period of time.

Okx watches warnings advisories
Ct... Winter weather advisory until 10 pm est this evening for
ctz009-010.

Winter weather advisory until 1 am est Saturday for ctz011-012.

Ny... Winter weather advisory until 10 pm est this evening for
nyz078-080-177-179.

Winter weather advisory until 1 am est Saturday for nyz079-081.

Nj... None.

Marine... Small craft advisory until 7 pm est Saturday for anz330-335-
338-340-345.

Small craft advisory until 1 am est Sunday for anz350-353-355.

Synopsis... Ds nv
near term... Ds nv
short term... Nv
long term... Nv
aviation... Pw
marine... Ds nv
hydrology... Ds nv
equipment...



Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44039 - Central Long Island Sound 12 mi56 min WNW 12 G 16 29°F
MTKN6 - 8510560 - Montauk, NY 26 mi38 min 31°F 43°F1010.6 hPa
NLNC3 - 8461490 - New London, CT 27 mi38 min N 4.1 G 5.1 23°F 49°F1010.9 hPa
NWHC3 - 8465705 - New Haven, CT 28 mi38 min NNW 7 G 9.9 24°F 43°F1012.2 hPa
BRHC3 - 8467150 - Bridgeport, CT 39 mi44 min NW 5.1 G 8 24°F 42°F1011.7 hPa

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
-12
PM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
Last
24hr
NW1
NW2
NW1
W1
SW4
NW1
W2
W1
NW1
--
W3
G6
S1
N1
NW1
NW1
N2
N2
G5
N2
N2
NE2
N2
N4
G7
N6
1 day
ago
W9
G14
W6
G13
W6
G11
W6
G10
W4
G10
NW3
N3
NE2
NE3
G6
NE4
NE4
N3
N4
G9
N4
G10
N6
N7
G11
N9
G13
NW10
G17
NW9
G15
NW3
G6
NW3
N5
N5
G8
NW2
2 days
ago
NW4
G10
NW4
G9
N7
G13
NW4
G11
NW4
G8
NW7
G16
NW9
G15
NW6
G14
W6
G10
W6
G14
W7
G15
NW10
G19
NW8
G20
NW9
G19
NW8
G21
NW10
G22
W7
G25
NW6
G19
W7
G17
W5
G17
W6
G17
W9
G14
W9
G15
W5
G11

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
The Gabreski Airport, NY19 mi33 minW 63.00 miLight Snow Fog/Mist27°F24°F89%1012.1 hPa
Chester, Chester Airport, CT21 mi31 minN 05.00 miLight Snow23°F21°F93%1010.5 hPa

Wind History from FOK (wind in knots)
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
Last 24hrW5W5CalmCalmCalmCalmE3CalmCalmCalmCalmCalmNE4E3SE4NE3N5NE8NW3NW4NW3NW4W4W6
1 day agoW11W12W12W7CalmN4NE3NE6N10N7N4N9N10NW8NW12NW15NW13
G20
NW7W8NW9W10W4W7W5
2 days agoNW12NW15
G21
W9W12
G27
W20
G29
W16
G27
W16W15
G23
W18
G25
W15
G26
W17
G28
W23
G31
W17
G39
W26
G32
W23
G32
W19
G37
W22
G30
W22
G30
W18
G25
W11W15
G20
SW8W7W10

Tide / Current Tables for Horton Point, Long Island Sound, New York
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Horton Point
Click for Map
Fri -- 02:24 AM EST     0.12 feet Low Tide
Fri -- 04:25 AM EST     Moonrise
Fri -- 07:08 AM EST     Sunrise
Fri -- 08:47 AM EST     4.29 feet High Tide
Fri -- 02:59 PM EST     -0.13 feet Low Tide
Fri -- 03:03 PM EST     Moonset
Fri -- 04:22 PM EST     Sunset
Fri -- 09:15 PM EST     3.81 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.60.70.20.20.71.62.53.54.14.33.93.12.110.2-0.10.10.81.72.63.43.83.73.1

Tide / Current Tables for Shinnecock Canal, Railroad Bridge, New York Current
   EDIT      (on/off)   Help   One Week of Data
Shinnecock Canal
Click for Map
Fri -- 01:08 AM EST     0.00 knots Slack
Fri -- 04:21 AM EST     1.56 knots Max Flood
Fri -- 04:25 AM EST     Moonrise
Fri -- 07:04 AM EST     -0.00 knots Slack
Fri -- 07:07 AM EST     Sunrise
Fri -- 10:11 AM EST     -1.58 knots Max Ebb
Fri -- 01:54 PM EST     0.00 knots Slack
Fri -- 03:03 PM EST     Moonset
Fri -- 04:22 PM EST     Sunset
Fri -- 04:47 PM EST     1.21 knots Max Flood
Fri -- 07:11 PM EST     -0.00 knots Slack
Fri -- 10:21 PM EST     -1.49 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.8-0.10.81.31.51.50.90.1-0.7-1.3-1.6-1.5-1.3-0.80.10.81.11.20.90.2-0.6-1.1-1.5-1.4

Weather Map and Satellite Images
       (on/off)   Help
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 (22,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Upton, NY
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.