Saturday, August19, 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 6:08AMSunset 7:48PM Saturday August 19, 2017 1:36 AM EDT (05:36 UTC) Moonrise 3:37AMMoonset 6:23PM Illumination 10% 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- 932 Pm Edt Fri Aug 18 2017
Tonight..S winds 10 to 15 kt with gusts up to 20 kt, becoming sw 5 to 10 kt late. Seas around 2 ft late this evening, then 1 ft or less. Patchy fog. Showers likely late this evening. Slight chance of tstms. Chance of showers after midnight. Vsby 1 to 3 nm.
Sat..W winds 5 to 10 kt. Seas 1 ft or less.
Sat night..W winds 5 to 10 kt. Seas 1 ft or less.
Sun..W winds 5 to 10 kt. Seas 1 ft or less.
Sun night..NW winds 5 to 10 kt. Seas 1 ft or less.
Mon..NW winds around 5 kt, becoming sw in the afternoon. Seas 1 ft or less.
Mon night..SW winds 5 to 10 kt. Seas 1 ft or less.
Tue..SW winds 5 to 10 kt. Seas 1 ft or less.
Tue night..SW winds around 10 kt. Seas 1 ft or less. Chance of showers and tstms after midnight.
Wed..W winds around 10 kt. Seas 1 ft or less, then around 2 ft in the afternoon. Chance of showers and tstms.
Wed night..NW winds 5 to 10 kt. Seas 1 ft or less. Chance of showers and tstms in the evening. Winds and seas higher in and near tstms.
ANZ300 932 Pm Edt Fri Aug 18 2017
Synopsis for the long island waters and new york harbor.. A cold front will move slowly east across the area late tonight, then stall just east of long island on Saturday. High pressure will follow Saturday night through Tuesday. A cold front will pass across the area Wednesday night followed by high pressure.

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 190300
afdokx
area forecast discussion
national weather service new york ny
1100 pm edt Fri aug 18 2017

Synopsis
A cold front will move slowly east across the area late tonight,
then stall just east of long island on Saturday. High pressure
will follow Saturday night through Tuesday. A cold front will
pass across the area Wednesday night followed by high pressure.

Near term until 6 am Saturday morning
Main update this evening to cancel the flash flood and severe
thunderstorm watches, as convection is rapidly diminishing in
intensity. A few spotty convective showers and stratiform
precipitation remain, but should pose little threat for the
remainder of the evening.

Leftover showers and tstms will end with the passage of the cold
front between 06z and 12z overnight. With light winds forecast
during this time, areas of fog will develop, possibly dense
across long island and southern ct where significant rainfall
fell earlier in the day.

Short term 6 am Saturday morning through Saturday night
With a digging upstream trough approaching Saturday, the cold
front may not make it too far off the long island coast. In
fact, it's possible that it might retrograde a bit until the
passage of this trough Saturday night.

Dryer air will advect east across the area Saturday night as
high pressure advects east toward the area.

Long term Sunday through Friday
A broad area of high pres will build in Sun and mon. This will
produce seasonable temps and mostly clear skies. A thermal ridge
will build into the region Tue into wed, producing a mini heat
wave. Some spots, particularly across nern nj, may hit the 2 day
heat advy criteria. As subtropical moisture becomes entrained
in the flow, an increase in high clouds can be expected by wed.

The cold frontal timing has slowed slightly from the previous
12z model suite, so right now the timing is for the late aftn
and eve. Although the best chance for tstms will be with the
fropa wed, there will be chances prior, albeit lower, due to the
unstable airmass and onset of lowering heights. Because of the
progged position of the front and tendency of the guidance to
smooth out the temp gradient, highs were manually raised on wed.

A significant cool down then looks to follow for the end of the
week. The models have been very consistent with this signal,
although the exact magnitude of the cold airmass remains in
question. It would not be totally surprising to see some lows in
the furthest outlying areas touch the upr 40s next weekend.

Aviation 03z Saturday through Wednesday
A cold front will pass through the area late tonight, then stall
nearby on Saturday.

Cold front in eastern pa is expected to push through the metro
terminals between 08z and 12z. There could be an isold shower
accompanying its passage but coverage too limited to include in
forecast. Generally expect MVFR to locally ifr to return to the
terminals by 05z and remain until the winds shift to the W nw
late tonight. Timing in tafs could be + - 1-2 hours.VFR then
returns W to E early Sat morning. Seabreezes expected at coastal
terminal during the aftn.

Outlook for 00z Sunday through Wednesday
Saturday night-Monday Vfr.

Tuesday Isolated showers and thunderstorms possible with
MVFR or lower conditions,otherwiseVFR.

Wednesday Scattered showers and thunderstorms with MVFR
possible. Gusty southwest wind to 20 kt.

Marine
A small craft advisory SCA remains in effect across the atlantic
ocean coastal waters through tonight as a cold front approaches.

Heavy showers and tstms are likely. Areas of dense fog are
possible until sunrise.

Weather conditions improve with the passage of a cold front
Saturday morning as winds and seas fall below SCA levels.

Winds and seas will increase ahead of a cold frontal passage late
Tuesday and Wednesday. Seas on the ocean may linger AOA 5 ft Wed ngt
behind the front. Winds and seas thereafter are progged to remain
blw SCA lvls.

Hydrology
A few spotty showers are possible tonight ahead of a cold front
but are not expected to pose a risk of flash flooding.

Impacts from potential showers and thunderstorms Tuesday into
Wednesday are uncertain at this point.

Okx watches warnings advisories
Ct... None.

Ny... None.

Nj... None.

Marine... Small craft advisory until 6 am edt Saturday for anz350-353-
355.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KPTN6 - 8516945 - Kings Point, NY 21 mi48 min W 6 G 8.9 75°F 74°F1008.8 hPa
BATN6 - 8518750 - The Battery, NY 28 mi48 min 74°F 75°F1008.8 hPa
ROBN4 - 8530973 - Robins Reef, NJ 32 mi48 min W 9.9 G 12 1009.6 hPa
MHRN6 34 mi48 min W 6 G 8
BGNN4 - 8519483 - Bergen Point West Reach, NJ 34 mi48 min 74°F 76°F1009.1 hPa
BRHC3 - 8467150 - Bridgeport, CT 39 mi54 min SW 4.1 G 6 74°F 75°F1008.1 hPa
SDHN4 - 8531680 - Sandy Hook, NJ 44 mi48 min WSW 8.9 G 11 74°F 77°F1008.3 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 mi40 minS 39.00 miPartly Cloudy73°F71°F94%1008.6 hPa
Teterboro, Teterboro Airport, NJ18 mi45 minSW 310.00 miA Few Clouds74°F72°F94%1008.4 hPa
New York City, Central Park, NY22 mi45 minWSW 410.00 miFair74°F72°F94%1008.8 hPa
New York, La Guardia Airport, NY22 mi45 minWSW 710.00 miLight Rain76°F72°F88%1008.6 hPa

Wind History from HPN (wind in knots)
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Last 24hrSE4SE4E4SE5S6SE6SE5SE5SE364S5S6S84S7S4S7S6S43W5CalmS3
1 day agoCalmNW5CalmCalmN6N3NE6E6E3SE6Calm3E5S7SE8SE8SE8S6S4S3SE3SE4E5E4
2 days agoCalmW5W6W4NW5NW7NW9NW8N9NW7N12
G16
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NW8NW4NW5W5N3CalmNW3CalmW3N5NW4

Tide / Current Tables for Tarrytown, Hudson River, New York
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Tarrytown
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Sat -- 02:48 AM EDT     0.03 feet Low Tide
Sat -- 03:37 AM EDT     Moonrise
Sat -- 06:09 AM EDT     Sunrise
Sat -- 08:41 AM EDT     3.43 feet High Tide
Sat -- 02:54 PM EDT     0.06 feet Low Tide
Sat -- 06:23 PM EDT     Moonset
Sat -- 07:47 PM EDT     Sunset
Sat -- 08:59 PM EDT     4.07 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.60.90.200.51.42.32.93.33.43.12.41.60.90.30.10.51.52.53.43.94.13.93.2

Tide / Current Tables for Haverstraw (Hudson River), New York Current
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Haverstraw (Hudson River)
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Sat -- 02:32 AM EDT     -1.45 knots Max Ebb
Sat -- 03:37 AM EDT     Moonrise
Sat -- 06:09 AM EDT     Sunrise
Sat -- 06:18 AM EDT     0.00 knots Slack
Sat -- 08:28 AM EDT     0.80 knots Max Flood
Sat -- 11:12 AM EDT     -0.00 knots Slack
Sat -- 02:47 PM EDT     -1.40 knots Max Ebb
Sat -- 06:23 PM EDT     0.00 knots Slack
Sat -- 06:23 PM EDT     Moonset
Sat -- 07:48 PM EDT     Sunset
Sat -- 08:53 PM EDT     1.13 knots Max Flood
Sat -- 11:55 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.6-1.1-1.4-1.4-1.2-0.8-0.20.40.80.80.60.1-0.5-1-1.3-1.4-1.2-0.8-0.30.511.110.6

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 (1,6,7,8)
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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.