Thursday, October19, 2017 L-36.com


Marine Weather and Tides
South 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 7:11AMSunset 6:09PM Thursday October 19, 2017 11:22 PM EDT (03:22 UTC) Moonrise 6:48AMMoonset 6:29PM 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
    EDIT      (on/off)   Help
ANZ335 Long Island Sound West Of New Haven Ct/port Jefferson Ny- 926 Pm Edt Thu Oct 19 2017
Overnight..W winds 10 to 15 kt. Seas 1 ft or less.
Fri..NW winds 5 to 10 kt. Seas 1 ft or less.
Fri night..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 around 5 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..SW winds 5 to 10 kt. Seas 1 ft or less.
Mon night..S winds around 10 kt. Seas 1 ft or less. Chance of showers after midnight.
Tue..S winds 10 to 15 kt. Seas around 2 ft. Chance of showers. Vsby 1 to 3 nm in the afternoon.
Tue night..S winds 15 to 20 kt. Seas around 2 ft. Showers likely. Vsby 1 to 3 nm in the evening.
ANZ300 926 Pm Edt Thu Oct 19 2017
Synopsis for the long island waters and new york harbor.. A weak cold front move across the waters late tonight. High pressure will then build back in through Saturday, sliding offshore Sunday and Monday. A slow moving frontal system will then approach the waters Tuesday into Tuesday night with a cold frontal passage by early Wednesday.

7 Day Forecast for Marine Location Near South Nyack, NY
   Hourly   EDIT   Help
location: 41.08, -73.9     debug


Area Discussion for - New York City/Upton, NY
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kokx 200251
afdokx
area forecast discussion
national weather service new york ny
1051 pm edt Thu oct 19 2017

Synopsis
A weak cold frontal passage will occur late tonight. High
pressure will dominate from Friday through Monday, moving
offshore Sunday 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 am Friday morning
Analysis of surface theta-e reveals the cold front is beginning
to move across western upstate ny and NW pa. All high res models
forecast the front to quickly move to the south and east
overnight and move offshore around sunrise. The main upper
level trough will track into northern quebec tonight so there
will not be any significant change in airmass other than a minor
drop in dew points.

Just a few-sct high thin cirrus tonight behind the upper trough
winds will gradually shift from the SW to the NW once the front
moves across. Lows tonight fall into the 40s and 50s.

Short term 6 am Friday morning through Friday night
High pressure builds back into the region behind the cold
front. Winds will remain from the northwest and gust into the
upper teens and lower 20s. There is a chance that gusts could be
slightly higher than forecast based on the amount of mixing
that occurs. Conditions remain dry. Winds gradually diminish
overnight, becoming light and variable across the interior.

Max temperatures will climb into the upper 60s and lower 70s on
Friday, with lows Friday night falling into the 40s and 50s. A
mav met ecs blend was used for the short term temperatures.

Long term Saturday through Thursday
Warming trend for the weekend through Monday as the jet stream
remains north of the region with upper level ridging. At this
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 this weekend.

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 03z Friday through Tuesday
A weak cold front approaches from the lower great lakes tonight
and passes through prior to daybreak. High pressure then builds
in from the west through Friday night.

Vfr with only some cirrus through the period.

Sw winds less than 10 kts, gradually veer to the NW through the
overnight. Winds will be right around 310 true during Friday,
around 10 kt with frequent gusts up to 20 kt.

Outlook for 00z Saturday through Tuesday
Friday night-Monday Vfr.

Tuesday MVFR possible in showers. S wind g20-25 kt. Llws
possible.

Marine
Winds east of fire island inlet are close to marginal small
craft levels and this should continue overnight. Seas are also
running right around 5 ft. These conditions will fall below sca
levels early Friday morning behind a cold front passage.

Elsewhere, winds and seas will generally be below small craft
advisory levels through Friday night. There could be some
nearshore gusts approaching 25 kt Friday afternoon on a
relatively strong NW flow.

With high pressure dominating, expecting overall a weak enough
pressure gradient to keep conditions below SCA this weekend
through Monday night on the waters. SCA will be probable for
Tuesday ahead of a cold front as southerly winds strengthen the
southerly fetch. Both wind gusts and seas are forecast to meet
sca thresholds for the ocean for Tuesday and perhaps all waters
Tuesday night.

Fire weather
A special weather statement has been issued for the entire
region on Friday due to enhanced fire danger. Rh values should
drop to 30 to 35 percent while winds gust 20 to 25 mph,
especially late morning into the afternoon.

Hydrology
No hydrologic problems are expected through Monday night. For
Tuesday through early Wednesday, heavy rain will be possible at
times with potential areas of 1 inch or higher. There is much
uncertainty with exact rainfall amounts. Urban and poor drainage
flooding will be possible.

Okx watches warnings advisories
Ct... None.

Ny... None.

Nj... None.

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

Synopsis... Bc jm
near term... Ds
short term... Bc
long term... Jm
aviation... Dw
marine... Bc jm
fire weather... Bc
hydrology... Jm


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
44022 - Execution Rocks 16 mi53 min SSW 14 G 18 67°F 51°F
44040 - Western Long Island Sound 19 mi94 min SW 14 G 19 66°F 1 ft52°F
KPTN6 - 8516945 - Kings Point, NY 20 mi53 min W 9.9 G 12 65°F 66°F1019.4 hPa
BATN6 - 8518750 - The Battery, NY 27 mi53 min 64°F 66°F1019.6 hPa
ROBN4 - 8530973 - Robins Reef, NJ 31 mi53 min WSW 11 G 13 63°F 1019.5 hPa
MHRN6 33 mi53 min SW 9.9 G 14
BGNN4 - 8519483 - Bergen Point West Reach, NJ 33 mi53 min 62°F 66°F1018.9 hPa
BRHC3 - 8467150 - Bridgeport, CT 39 mi53 min NNW 1.9 G 5.1 61°F 66°F1017.8 hPa
SDHN4 - 8531680 - Sandy Hook, NJ 43 mi53 min SW 8.9 G 9.9 61°F 64°F1019.9 hPa

Wind History for Kings Point, NY
(wind in knots)    EDIT      (on/off)   Help
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
24hr
SW6
SW6
SW7
S5
S4
S4
S4
SW6
SW6
G9
SW8
SW7
SW6
W12
G16
W10
G13
W10
SW11
G14
SW15
SW12
G17
SW12
SW12
SW7
G10
SW8
G11
W11
W11
1 day
ago
W10
W8
SW9
W9
G12
W8
W10
SW7
W5
SW7
SW5
NW7
NW6
N6
--
--
SW3
NW4
W4
SW10
SW11
G14
S9
S7
S4
S4
2 days
ago
N15
G19
NE12
G16
NE13
N10
G14
NE11
G16
NE13
G16
NE15
NE11
G17
NE15
E10
G17
NE11
G17
NE12
G16
E5
G10
NE2
G7
W2
SW1
S2
S2
G6
SW4
SW12
SW8
SW10
SW9
SW9

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
White Plains - Westchester County Airport, NY10 mi27 minW 310.00 miFair61°F44°F54%1018 hPa
Teterboro, Teterboro Airport, NJ17 mi32 minSSW 410.00 miFair61°F45°F56%1018.5 hPa
New York City, Central Park, NY21 mi32 minno data10.00 miFair63°F45°F52%1018.7 hPa
New York, La Guardia Airport, NY21 mi32 minSW 810.00 miA Few Clouds65°F46°F51%1018.6 hPa
Caldwell, Essex County Airport, NJ24 mi30 minSW 410.00 miFair58°F48°F70%1019.5 hPa

Wind History from HPN (wind in knots)
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
11
PM
Last 24hr3W4W3CalmCalmCalmCalmCalmCalm4SW4SW8SW9
G16
S8
G15
S7
G17
SW76S5S6S3Calm45W3
1 day agoCalmW3W3W3W6NW5NW5W5W6W5NW7NW7NW6N3NW6NW63S3CalmS4S4S3CalmW3
2 days agoNW7NW5NW6N6NW4NW5NW3N4NW4N8N10NW7NW653W3CalmS4S3CalmS3CalmS3Calm

Tide / Current Tables for Tarrytown, Hudson River, New York
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Tarrytown
Click for Map
Thu -- 04:25 AM EDT     -0.06 feet Low Tide
Thu -- 06:47 AM EDT     Moonrise
Thu -- 07:11 AM EDT     Sunrise
Thu -- 10:27 AM EDT     3.91 feet High Tide
Thu -- 03:12 PM EDT     New Moon
Thu -- 04:49 PM EDT     0.03 feet Low Tide
Thu -- 06:08 PM EDT     Sunset
Thu -- 06:29 PM EDT     Moonset
Thu -- 10:43 PM EDT     3.60 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.821.20.500.10.81.82.73.43.93.83.32.51.70.90.300.51.42.33.13.53.6

Tide / Current Tables for Haverstraw (Hudson River), New York Current
   EDIT      (on/off)   Help   One Week of Data
Haverstraw (Hudson River)
Click for Map
Thu -- 12:45 AM EDT     -0.00 knots Slack
Thu -- 04:20 AM EDT     -1.42 knots Max Ebb
Thu -- 06:48 AM EDT     Moonrise
Thu -- 07:12 AM EDT     Sunrise
Thu -- 07:53 AM EDT     0.00 knots Slack
Thu -- 10:21 AM EDT     1.05 knots Max Flood
Thu -- 01:13 PM EDT     -0.00 knots Slack
Thu -- 03:12 PM EDT     New Moon
Thu -- 04:49 PM EDT     -1.46 knots Max Ebb
Thu -- 06:08 PM EDT     Sunset
Thu -- 06:29 PM EDT     Moonset
Thu -- 08:25 PM EDT     0.00 knots Slack
Thu -- 10:41 PM EDT     0.92 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.5-0.2-0.7-1.1-1.4-1.4-1.1-0.70.10.8110.70.1-0.5-1-1.3-1.5-1.3-1-0.30.40.90.9

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 (23,6,7,8)
      (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.