Monday, August21, 2017 L-36.com


Marine Weather and Tides
Dobbs Ferry, 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 6:10AMSunset 7:45PM Monday August 21, 2017 1:51 PM EDT (17:51 UTC) Moonrise 5:53AMMoonset 7:51PM 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
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ANZ335 Long Island Sound West Of New Haven Ct/port Jefferson Ny- 1238 Pm Edt Mon Aug 21 2017
This afternoon..SW winds 5 to 10 kt. Seas 1 ft or less.
Tonight..SW winds 5 to 10 kt. Seas 1 ft or less. Chance of showers and tstms after midnight.
Tue..SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 ft or less, then around 2 ft in the afternoon.
Tue night..SW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Chance of showers and tstms.
Wed..W winds around 10 kt. Seas 1 ft or less.
Wed night..N winds 5 to 10 kt. Seas 1 ft or less.
Thu..NW winds 5 to 10 kt. Seas 1 ft or less.
Thu night..N winds 5 to 10 kt. Seas 1 ft or less.
Fri..NE winds 5 to 10 kt. Seas 1 ft or less.
Fri night..W winds around 5 kt, becoming N after midnight. Seas 1 ft or less. Winds and seas higher in and near tstms.
ANZ300 1238 Pm Edt Mon Aug 21 2017
Synopsis for the long island waters and new york harbor.. High pressure shifts offshore this afternoon then moves farther offshore tonight into Tuesday. Meanwhile, a cold front will be approaching. The front will pass through on Wednesday, followed by high pressure later this week.

7 Day Forecast for Marine Location Near Dobbs Ferry, NY
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location: 41.02, -73.88     debug


Area Discussion for - New York City/Upton, NY
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Fxus61 kokx 211650
afdokx
area forecast discussion
national weather service new york ny
1250 pm edt Mon aug 21 2017

Synopsis
High pressure over the region moves offshore today and tonight.

A cold front approaches from the west Tuesday and passes through
Tuesday night into Wednesday morning. High pressure then builds
in thereafter through the end of the week with a much drier and
cooler airmass.

Near term until 6 pm this evening
Forecast still mainly on track with just slight adjustments to
temperatures and dewpoints to better match observed trends.

Weak quasi-zonal flow aloft with main upper level jet stream
well northwest of the region. Surface high remains over the
area.

Expecting a mainly dry day with just a slight chance of showers
and thunderstorms for far western orange county late this
afternoon. 850mb temperatures forecast to reach near 15-16
degrees c. Surface temperatures forecast to reach several
degrees warmer than yesterday. Mid 80s to near 90 degrees f for
much of the region with mostly sunny conditions for most
locations.

For sky cover, better chances of having some translucent cirrus
during the timeframe of the partial solar eclipse, which runs
about 120 pm to 400 pm in nyc with a peak at 244 pm, are north
of the city. For long island, the city and adjacent areas of ne
nj, some cirrus still expected but probably not as much
coverage as farther north. Cumulus development is happening
along sea breeze boundaries over long island and ct and slowly
pushing north. Cumulus development may still occur over other
parts of the tri state area, however in almost all cases it
should be no more that scattered.

The western edge of a cirrus shield should be east
of the forks region and SE ct by 200 pm. Another area of
translucent cirrus moving through northern pa would appear to
shift through primarily north of the city in the t cirrus may
however develop and pass through the city and long island during
this period as well, especially if any convection pops up to
our west. Hrrr indicates this convective potential, but may
happen too late to be of much significance. Finally, some
cumulus development along sea breezes this afternoon may cause
some obstruction within about 10 miles of south-facing coasts.

Thinking is that any cumulus would be no more that scattered in
nature for most spots that see it.

Like previous forecast, a look at the hrrrx conveys a slight
decrease during maximum obscuration of Sun during eclipse, so
adjusted temperature a degree downward at 19z (3pm local time).

There is a low risk of rip currents today, becoming moderate
late today at atlantic beaches.

Short term 6 pm this evening through 6 pm Tuesday
Rest of the forecast shows high pressure moving farther offshore
and a cold front gradually approaching from the west. Upper
levels convey an upper level trough with its upper level low based
in ontario approaching the region. Continually more warm and
humid conditions are expected. Forecast has warmer temperatures
Tuesday, getting hot and humid for quite a few locations. Could
see heat indices up to 100 degrees in and around nyc.

Precip forecast remains near or below 30 percent for showers and
thunderstorms. Not much forcing but increasing instability and
possible lee trough forming Tuesday could provide focus for
convergence. Models are pretty minimal with forecast rainfall
amounts overall tonight through Tuesday. Weak trough evident in
lower levels late tonight into early Tuesday will lead to pops
more in low end chance for showers and thunderstorms and then
expecting much of Tuesday to be dry except for interior
locations which will have relatively higher chances for showers
and thunderstorms. These locations will be closer to lee trough
as well.

Long term Tuesday night through Sunday
A cold front approaches the region Tuesday night and pushes across
the forecast area on Wednesday. Expect cloud cover to increase and
showers and thunderstorms to develop and move across the region
through this time frame. By Wednesday evening, skies will begin to
clear and a much cooler airmass will be arriving.

Canadian high pressure builds into the region Thursday through the
weekend, providing dry and sunny conditions. Temperatures will
remain below normal as highs only reach the 70s to near 80 each day.

The dry and cooler conditions are expected to continue into
Monday.

Aviation 18z Monday through Saturday
Vfr through the TAF period as high pressure remains in control.

An isolated shower or TSTM possible late day near kswf, and
early evening for khpn and the nyc metros. Given earlier
upstream activity over western ny, which has died down but
should refire this afternoon, have enough confidence to mention
vcts at kswf.

Sea breezes are in at kbdr kgon, and while direction at most
other terminals continues to vary between SW and w. A more s-sw
sea breeze should set in this afternoon at kjfk kisp and reach
klga late, and kewr kteb could be on the edge of a harbor breeze
late as well. Gusts 15-18 kt likely.

S-sw winds diminish to less than 10 kt this evening.

There is also low potential for development of low clouds fog
late tonight with MVFR or lower flight cat, mainly at
kjfk kisp kgon.

Ny metro enhanced aviation weather support...

detailed information, including hourly TAF wind component forecasts,
can be found at: http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KPTN6 - 8516945 - Kings Point, NY 16 mi52 min NW 1.9 G 2.9 83°F 74°F1021 hPa (-1.2)
BATN6 - 8518750 - The Battery, NY 23 mi52 min 82°F 76°F1021.2 hPa (-1.0)
ROBN4 - 8530973 - Robins Reef, NJ 27 mi52 min SSE 12 G 14 1022 hPa (-1.0)
BGNN4 - 8519483 - Bergen Point West Reach, NJ 30 mi52 min 87°F 77°F1021.4 hPa (-1.0)
MHRN6 30 mi52 min SSW 5.1 G 8.9
SDHN4 - 8531680 - Sandy Hook, NJ 39 mi52 min SSE 8.9 G 11 80°F 78°F1021 hPa (-1.0)
BRHC3 - 8467150 - Bridgeport, CT 39 mi52 min SSW 8.9 G 12 80°F 74°F1020.5 hPa (-1.1)
44065 - Entrance to New York Harbor 46 mi62 min S 9.7 G 12 77°F 78°F1 ft1021.6 hPa (-0.5)69°F
44069 48 mi52 min SW 9.7 G 12 78°F 79°F69°F

Wind History for Kings Point, NY
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
White Plains - Westchester County Airport, NY9 mi56 minVar 410.00 miFair83°F60°F46%1020.8 hPa
Teterboro, Teterboro Airport, NJ14 mi61 minWSW 710.00 miFair86°F57°F39%1020.7 hPa
New York City, Central Park, NY17 mi61 minno data10.00 miFair85°F61°F45%1021.2 hPa
New York, La Guardia Airport, NY17 mi61 minSSW 1010.00 miMostly Cloudy87°F60°F40%1020.9 hPa
Caldwell, Essex County Airport, NJ23 mi59 minSSW 710.00 miFair85°F63°F48%1021.9 hPa

Wind History from HPN (wind in knots)
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Last 24hrNW10NW10W8NW7NW6W5W3W3CalmNW3NW3NW3W3NW4NW3NW4NW4NW3W6W63664
1 day agoW7
G15
W6W6W7W4W3W4W3W4W3NW4W6W6W10W8W13W9
G16
NW11NW9NW11NW8W10W8NW8
2 days agoS6S84S7S4S7S6S43W5CalmS3W5W6W5W5W5W5W6NW6NW6CalmNW6NW5

Tide / Current Tables for Dobbs Ferry, Hudson River, New York
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Dobbs Ferry
Click for Map
Mon -- 04:19 AM EDT     -0.39 feet Low Tide
Mon -- 05:52 AM EDT     Moonrise
Mon -- 06:11 AM EDT     Sunrise
Mon -- 10:09 AM EDT     4.02 feet High Tide
Mon -- 02:31 PM EDT     New Moon
Mon -- 04:29 PM EDT     -0.24 feet Low Tide
Mon -- 07:44 PM EDT     Sunset
Mon -- 07:50 PM EDT     Moonset
Mon -- 10:23 PM EDT     4.45 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
321.10.2-0.4-0.20.71.92.93.743.83.12.11.20.4-0.2-0.10.723.144.44.4

Tide / Current Tables for Haverstraw (Hudson River), New York Current
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Haverstraw (Hudson River)
Click for Map
Mon -- 12:46 AM EDT     -0.00 knots Slack
Mon -- 04:20 AM EDT     -1.56 knots Max Ebb
Mon -- 05:52 AM EDT     Moonrise
Mon -- 06:11 AM EDT     Sunrise
Mon -- 07:59 AM EDT     0.00 knots Slack
Mon -- 10:15 AM EDT     0.99 knots Max Flood
Mon -- 01:02 PM EDT     -0.00 knots Slack
Mon -- 02:31 PM EDT     New Moon
Mon -- 04:38 PM EDT     -1.50 knots Max Ebb
Mon -- 07:45 PM EDT     Sunset
Mon -- 07:50 PM EDT     Moonset
Mon -- 08:09 PM EDT     0.00 knots Slack
Mon -- 10:34 PM EDT     1.20 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.5-0.2-0.8-1.3-1.5-1.5-1.2-0.700.710.90.60-0.6-1.1-1.4-1.5-1.2-0.8-0.10.71.11.2

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 (13,3,4,5)
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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.