Sunday, December10, 2017 L-36.com


Marine Weather and Tides
Nyack, 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 7:09AMSunset 4:28PM Sunday December 10, 2017 7:18 PM EST (00:18 UTC) Moonrise 12:28AMMoonset 1:37PM Illumination 50% Phase: Third Quarter Moon; Moon at 22 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- 346 Pm Est Sun Dec 10 2017
Tonight..W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Scattered snow showers after midnight with vsby 1 to 3 nm.
Mon..W winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 2 ft. Scattered snow showers in the morning with vsby 1 to 3 nm.
Mon night..SW winds around 5 kt, becoming se after midnight. Seas 1 ft or less. Chance of rain and snow after midnight with vsby 1 to 3 nm.
Tue..SE winds 5 to 10 kt, becoming sw 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 1 ft or less, then around 2 ft in the afternoon. Rain likely in the morning, then chance of showers in the afternoon.
Tue night..W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft.
Wed..W winds 20 to 25 kt with gusts up to 35 kt. Seas 3 to 5 ft.
Wed night..W winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to 6 ft.
Thu..W winds 15 to 20 kt. Seas 3 to 5 ft, subsiding to 2 to 3 ft in the afternoon.
Thu night..N winds 10 to 15 kt. Seas around 2 ft in the evening, then 1 ft or less.
Fri..W winds 5 to 10 kt. Seas 1 ft or less. Chance of snow in the afternoon with vsby 1 to 3 nm.
Fri night..W winds 5 to 10 kt. Seas 1 ft or less. Chance of snow in the evening with vsby 1 to 3 nm.
ANZ300 346 Pm Est Sun Dec 10 2017
Synopsis for the long island waters and new york harbor.. A trough of low pressure passes through late tonight with high pressure building in briefly on Monday. Low pressure then tracks across the great lakes Monday night, sending a warm front across the waters Tuesday morning, then followed by a strong cold front in the afternoon. High pressure slowly builds back through Thursday. Another low pressure system moves through by late week.

7 Day Forecast for Marine Location Near Nyack, NY
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location: 41.1, -73.91     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 102336
afdokx
area forecast discussion
national weather service new york ny
636 pm est Sun dec 10 2017

Synopsis
A trough of low pressure passes through late tonight with high
pressure building in briefly on Monday. Low pressure then tracks
across the great lakes Monday night, sending a warm front across
part of the area Tuesday morning, then followed by a strong cold
front in the afternoon. Intensifying low pressure will move
from the new england coast into the canadian maritimes from
Tuesday night into Wednesday night, then slowly loosen its grip
on the area on Thursday as weak high pressure slides across. An
alberta clipper low will pass to the south on Thursday, then
another low will develop just off the coast late Friday into
Friday night.

Near term until 6 am Monday morning
A shortwave and upper trough axis approach from the west tonight
with a low pressure trough at the surface. The best combination of
lift and moisture arrive after midnight with isolated to scattered
snow showers. Lows around 30 across the city and adjacent suburbs
with 20s for the rest of the tri-state area.

Short term 6 am Monday morning through Tuesday
High pressure briefly builds in behind the departing trough Monday
morning with a lingering snow shower still possible east of the
city. Partly to mostly sunny in the morning, then higher-level
clouds begin to increase in the afternoon. High temperatures will be
a few degrees below normal.

Low pressure moves across the great lakes Monday night. An
associated warm front approaches us with increasing chances of pcpn
late at night, more likely NW of the city. A digging upper trough
and the low center then approach us during Tuesday. Associated
deeper moisture and lift bring then likelihood of pcpn across the
most of the rest of the area during the morning. The low passes us
to the north before exiting during the afternoon with maybe a
secondary low center moving through the tri-state area. Expect pcpn
chances to diminish in the afternoon with the best lift and moisture
exiting. A cold front then follows shortly thereafter, so pcpn
chances will continue through the day.

Warm advection ahead of the main portion of the storm will make this
a mixed pcpn event. Primarily rain is expected for the city,
adjacent suburbs and coastal section, although some snow can mix in
at first. Farther inland, snow or a snow rain mix changes over to
rain by noon on Tuesday. Only perhaps the elevated sections of
western orange county could see an all-snow event. Snow
accumulations expected to be 1 or two inches for the northern
suburbs with perhaps 3 inches in some spots across orange county.

Less than inch is expected anywhere else where snow manages to
accumulate. Highs in the 40s expected for most spots on Tuesday with
even some 50 degree readings for long island.

Long term Tuesday night through Sunday
At the start of the period, blustery and cold weather expected from
Tuesday night into Thursday as intensifying surface low pressure
moves from the eastern new england coast up into the maritimes. The
parent upper low trough will be closing off and becoming negatively
tilted during this time, and a strong vort MAX rotating around the
upper low may help spark a few snow showers late Tue night into wed
morning, especially out east. Blustery conditions expected as the
pressure gradient tightens up on the back side of the low, with
sustained winds 25-35 mph and gusts 45-50 mph possible Wed into wed
night. With temps falling to the teens and lower 20s Wed night, wind
chills should fall to 0 to 5 below well inland, and to the single
digits in nyc metro and along the coast. High temps both Wed thu
should range from the mid 20s to lower 30s.

Ecmwf has been more consistent than the GFS in the longer term
beyond Wed night and was followed for the most part. A weak alberta
clipper low should pass just south on Thu as an associated mid level
impulse passes just south, then another low should develop close by
late Friday as a more significant negatively-tilted upper trough
swings through, that could bring a period of light snow fri
afternoon evening.

Upper level flow after passage of the upper trough on Friday should
become zonal, with moderating temps, rising to the upper 30s lower
40s on sat, and into the 40s on Sunday. A surface low passing well
to the north may manage to produce a few sprinkles showers of snow
or rain late Sat night into Sunday in the low level warm advection
to its southeast.

Aviation 00z Monday through Friday
A cold front will approach tonight and pass on Monday.

Vfr through 6z, then ceilings drop to around 3000 ft with snow
showers in the area into the morning. Ceilings improve toVFR
after 15z, withVFR through the remainder of the TAF period.

Generally westerly winds through the TAF period. Direction will
be just south of west until the frontal passage on Monday, then
will become just north of west. Occasional gusts tonight, then
more frequent gusts to 20 kt on Monday. Gusts will end after
23z.

Outlook for 00z Tuesday through Thursday
Monday night-Tuesday MVFR or lower expected after 6z with a
wintry mix to rain at northern terminals and rain at southern
terminals. Conditions improve toVFR Tuesday afternoon. Se-sw
winds g15-25kt possible.

Tuesday night-Wednesday MainlyVFR, with a chance of MVFR in snow
showers. W-nw winds g20-35kt probable.

Wednesday night-Thursday night Vfr. W-sw winds g15-25kt possible.

Friday MVFR possible with snow. W-nw winds g15-20kt possible.

Marine
Sca conditions expected on the ocean waters through Monday
with winds and seas meeting criteria. Did not have enough
confidence to remove the SCA over the eastern sound and bays.

Looks like a marginal event, but have decided to let the
advisory continue through tonight. Winds and seas subside below
criteria Monday night. Winds and seas then increase during
Tuesday with SCA conds becoming likely on some of the waters.

As intensifying low pressure pulls away, gales should develop on the
ocean Tue night, with SCA conds on the remaining waters. NW gales
expected on all waters Wed night into Thu with a tight pressure
gradient and strong cold air advection. SCA conds may linger into
thu, then quiet conditions expected Thu night into fri, though winds
and seas in westerly flow after the passage of a weak low Fri night
could flirt once again with SCA levels.

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. See our headline news on
the web at: http: weather.Gov nyc
the riverhead NOAA weather radio station wxm-80 (162.475 mhz)
is currently out of service. NWS technicians are working with
verizon to restore service. An estimated time of return to
service is not currently known.

Okx watches warnings advisories
Ct... None.

Ny... None.

Nj... None.

Marine... Small craft advisory until 6 pm est Monday for anz350-353-355.

Small craft advisory until 6 am est Monday for anz330-340.

Synopsis... Jc goodman
near term... Jc
short term... Jc
long term... Goodman
aviation... Jmc maloit
marine... Jc goodman
hydrology... Jc goodman
equipment...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44022 - Execution Rocks 18 mi64 min SW 16 G 21 39°F 25°F
44040 - Western Long Island Sound 20 mi90 min WSW 19 G 29 40°F 2 ft27°F
KPTN6 - 8516945 - Kings Point, NY 21 mi49 min WNW 11 G 18 38°F 46°F1016.2 hPa
BATN6 - 8518750 - The Battery, NY 28 mi49 min 38°F 48°F1016.4 hPa
ROBN4 - 8530973 - Robins Reef, NJ 32 mi49 min SW 9.9 G 12 37°F 1016.4 hPa
MHRN6 34 mi49 min SW 7 G 11
BGNN4 - 8519483 - Bergen Point West Reach, NJ 34 mi49 min 35°F 47°F1015.8 hPa
BRHC3 - 8467150 - Bridgeport, CT 39 mi49 min WSW 7 G 13 36°F 47°F1014.3 hPa
SDHN4 - 8531680 - Sandy Hook, NJ 44 mi49 min WSW 12 G 15 37°F 45°F1016.8 hPa

Wind History for Kings Point, NY
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
White Plains - Westchester County Airport, NY10 mi83 minWSW 710.00 miMostly Cloudy34°F21°F59%1014.8 hPa
Teterboro, Teterboro Airport, NJ18 mi28 minSW 710.00 miFair36°F21°F57%1015.2 hPa
New York City, Central Park, NY22 mi28 minVar 410.00 miFair36°F21°F55%1015.4 hPa
New York, La Guardia Airport, NY22 mi28 minSW 1110.00 miPartly Cloudy38°F19°F48%1015.5 hPa

Wind History from HPN (wind in knots)
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Last 24hrNW7NW9NW10NW11NW9NW10NW8W5W6W10W8W7W7W7W9W8W8W10W9W6W6W4W7W5
1 day agoW6W5NW8W4W3CalmW3CalmW3N3NE3N3N4N7NE4N4N4N3N6N5N6N8N8N9
2 days agoW765W5W5W6W9W7W3W5W5W4W5W6W8W5NW6CalmSW4S5W43W44

Tide / Current Tables for Tarrytown, Hudson River, New York
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Tarrytown
Click for Map
Sun -- 02:53 AM EST     Last Quarter
Sun -- 03:33 AM EST     3.21 feet High Tide
Sun -- 07:09 AM EST     Sunrise
Sun -- 09:48 AM EST     0.35 feet Low Tide
Sun -- 12:36 PM EST     Moonset
Sun -- 03:45 PM EST     3.21 feet High Tide
Sun -- 04:26 PM EST     Sunset
Sun -- 10:28 PM EST     0.04 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.42.12.83.13.22.72.11.40.90.50.40.71.42.22.73.13.22.92.31.61.10.50.10.1

Tide / Current Tables for Haverstraw (Hudson River), New York Current
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Haverstraw (Hudson River)
Click for Map
Sun -- 01:00 AM EST     0.00 knots Slack
Sun -- 02:53 AM EST     Last Quarter
Sun -- 03:12 AM EST     0.82 knots Max Flood
Sun -- 06:05 AM EST     -0.00 knots Slack
Sun -- 07:10 AM EST     Sunrise
Sun -- 09:44 AM EST     -1.18 knots Max Ebb
Sun -- 12:37 PM EST     Moonset
Sun -- 01:22 PM EST     0.00 knots Slack
Sun -- 03:30 PM EST     0.80 knots Max Flood
Sun -- 04:26 PM EST     Sunset
Sun -- 06:25 PM EST     -0.00 knots Slack
Sun -- 10:15 PM EST     -1.29 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.7-00.60.80.80.50.1-0.5-0.8-1.1-1.2-1-0.8-0.20.40.80.80.60.2-0.3-0.7-1.1-1.3-1.2

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 (19,4,5,8)
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Ground Weather Radar Station Upton, NY
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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.