Sunday, May26, 2019 L-36.com


Marine Weather and Tides
Great River, NY

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 5:25AMSunset 8:14PM Sunday May 26, 2019 11:17 AM EDT (15:17 UTC) Moonrise 1:44AMMoonset 12:22PM Illumination 49% 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
    EDIT      (on/off)   Help
ANZ345 South Shore Bays From Jones Inlet Through Shinnecock Bay- 624 Am Edt Sun May 26 2019
Today..SW winds 5 to 10 kt. Waves 1 ft or less. Slight chance of showers and tstms late.
Tonight..W winds 5 to 10 kt, becoming nw after midnight. Waves 1 ft or less.
Mon..N winds around 5 kt, becoming se in the afternoon. Waves 1 ft or less.
Mon night..S winds 5 to 10 kt. Waves 1 ft or less.
Tue..SE winds 5 to 10 kt. Waves 1 ft or less. Showers likely.
Tue night..S winds 5 to 10 kt, becoming N after midnight. Waves 1 ft or less. Chance of showers and tstms in the evening. Vsby 1 to 3 nm.
Wed..NE winds around 5 kt, becoming E in the afternoon. Waves 1 ft or less.
Wed night..S winds 5 to 10 kt. Waves 1 ft or less. Chance of showers and tstms in the evening, then chance of showers after midnight. Vsby 1 to 3 nm in the evening.
Thu..SW winds 5 to 10 kt. Waves 1 ft or less. Chance of showers and tstms in the afternoon with vsby 1 to 3 nm.
Thu night..SW winds around 10 kt. Waves 1 ft or less. Chance of showers and tstms in the evening, then chance of showers after midnight. Vsby 1 to 3 nm in the evening. Winds and waves higher in and near tstms.
ANZ300 624 Am Edt Sun May 26 2019
Synopsis for the long island waters and new york harbor.. A cold front approaches today and passes through this evening, followed by weak high pressure for memorial day. Another warm front will approach late Monday night into Tuesday, and remain just south into Wednesday night as weak low pressure moves along the front just south of long island. The front should lift through by Thursday morning, followed by a cold frontal approach later Thursday.


7 Day Forecast for Marine Location Near Great River, NY
   Hourly   EDIT   Help
location: 40.72, -73.15     debug


Area Discussion for - New York City/Upton, NY
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kokx 261456
afdokx
area forecast discussion
national weather service new york ny
1056 am edt Sun may 26 2019

Synopsis
A cold front approaches today and passes through this evening,
followed by weak high pressure for memorial day. Another warm front
will approach late Monday night into Tuesday, and remain just south
into Wednesday night as weak low pressure moves along the front just
south of long island. The front should lift through by Thursday
morning, followed by a cold frontal approach later Thursday. The
front may linger into Friday, then weak high pressure may build in
to start next weekend.

Near term through tonight
The forecast is mostly on track. Skies will continue to clear
this morning as the atmospheric column dries out. This, along
with an offshore wind component for much of the area will allow
for deep mixing and rapid heating this morning into early
afternoon. Mixing up to 800mb with temps at this level at 12-13c
during the mid-afternoon yields highs in the lower 90s across
ne nj and parts of nyc and adjacent suburbs. Immediate south
coasts will likely be limited to upper 70s lower 80s with sw
component to flow and hybrid afternoon sea breeze development
ahead of thermal troughing and approach of cold front.

Elsewhere, widespread mid to upper 80 degree temps, locally 90
degrees. These temps will be about 15-20 degrees above
seasonable. Surface dewpoints will keep heat index values within
a degree or two of the ambient temperature.

A cold front enters from the NW late in the day and moves through
the rest of area this evening. Ahead of it, a weak thermal trough
will develop across the region. Potential for showers and
thunderstorms will limited in spite of the surface heating and
building instability. Mid-level capping and the late timing of
dynamic lift along with limited available moisture will serve
to limit any activity to isolated scattered. Any thunderstorms
that manage to occur could have strong wind gusts with the given
speed shear and relatively dry conditions in the sub-cloud
layer with an inverted-v profile.

Moisture increases this evening along the cold front but with a more
stable atmosphere. Still, a chance of showers and thunderstorms
remains for some areas until around midnight. Drier air pushes in
overnight behind the cold front.

There is a moderate risk of rip current development today.

Short term Monday
Weak high pressure builds in for memorial day with dry weather and
less humid conditions than today. Mostly sunny with high
temperatures still above normal, but not a warm as today.

There is a low risk of rip current development on Sunday.

Long term Monday night through Saturday
Much of this week will feature quasi-zonal flow aloft, with flat
ridging to the south, and a series of passing shortwave troughs
along with a nearby sfc warm front bringing inclement wx at
times beginning late Mon night. The warm front will approach
late Mon night into Tue with showers, also perhaps a few tstms
by Tue evening as mid levels destabilize, but remain just south
as a weak sfc low develops along it and ripples eastward.

The front should remain south until thu, with one more accompanying
round of showers tstms Wed night, then lift through Thu morning as
the flow aloft amplifies just enough in response to a weakening
upper low shearing out into the plains states. This should make thu
the warmest day of the upcoming work week, with highs in the 80s,
which along with dewpoints in the lower 60s, should provide
sufficient instability for afternoon evening tstms ahead of an
approaching cold front. Storms with the front could be strong
per ECMWF gfs consensus, with sfc-based LI -4c to -6c, mid
level flow 40-50 kt, and maglenta and sweat indices as low as 3
and nearing 300 respectively. Some recent events that looked
greater in the long term have not quite panned out, but the
accompanying air mass for this event is likely to be warmer
and more humid and therefor more unstable.

The sfc front could linger nearby into Fri morning per GFS as it
aligns with the flow aloft. With only slight chance pop this far
out in time. Otherwise weak high pressure should build in to
end the work week and start next weekend, before the next in the
train of disturbances follows possibly for next Sunday.

Aviation 15z Sunday through Thursday
A cold front approaches today and passes this evening.

Vfr through this afternoon expected today. Main concern is
convection developing over central pa as of 15z, potentially
working into the nyc nj terminals between 21-23z. Scattered
thunderstorms with strong winds would be the main threat, with
brief MVFR ifr conditions possible.

W winds 10 kt or less will increase as the morning progresses.

Winds should remain sw-w through the day 10-15 kt with gusts up
to 20 kt. The chance for a southerly sea breeze at coastal
terminals is low late this afternoon, but cannot be completely
ruled out. Winds then shift to the NW by evening, then n
overnight as they lighten.

Outlook for 12z Monday through Thursday
Monday Vfr.

Tuesday MVFR or lower in likely showers. SE gusts to 20 kt
possible near the coast.

Wednesday Chance of MVFR or lower in showers thunderstorms,
mainly in the afternoon and evening.

Thursday Chance of MVFR or lower in showers thunderstorms.

Sw wind gusts 20-25 kt.

Marine
Sub-sca conditions today with W to SW winds averaging around 10 kt,
although a late afternoon southerly coastal jet of 15-20 kt is
possible for the ny bight. Seas mostly 3 to 4 feet. Relatively
tranquil conditions expected for Monday.

Expecting quiet conds with respect to prevailing winds seas through
the longer term. Can't totally rule out onshore flow pushing seas
close to 5 ft on the outer ocean waters late day Tue into tue
evening and again Thu night, or sea breezes gusting to 25 kt thu
afternoon on the near shore ocean waters and the south shore bays of
long island. Tstms may also pose a hazard each late day and
evening during mid week, especially on thu.

Hydrology
No hydrologic impacts are anticipated today tonight and probably for
much of the upcoming week.

Equipment
Nyc NOAA weather radio station kwo35 (162.55 mhz) remains off
the air.

Okx watches warnings advisories
Ct... None.

Ny... None.

Nj... None.

Marine... None.

Synopsis... Jc goodman
near term... Jc
short term... Jc
long term... Goodman
aviation... Nv
marine... Jc goodman
hydrology... Jc goodman
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
44069 4 mi48 min SW 12 G 16 65°F 66°F62°F
BRHC3 - 8467150 - Bridgeport, CT 31 mi36 min SSW 8 G 11 68°F 57°F1012.6 hPa
44025 - LONG ISLAND 33 NM South of Islip, NY 32 mi28 min WSW 7.8 G 9.7 62°F 59°F4 ft1014.3 hPa (+0.0)
KPTN6 - 8516945 - Kings Point, NY 33 mi30 min W 1.9 G 2.9 71°F 59°F1014.9 hPa
44065 - Entrance to New York Harbor 38 mi28 min SSW 3.9 G 3.9 63°F 59°F4 ft1014.3 hPa62°F
NWHC3 - 8465705 - New Haven, CT 41 mi30 min SW 11 G 13 63°F 62°F1013.1 hPa
BATN6 - 8518750 - The Battery, NY 46 mi30 min 72°F 60°F1014.2 hPa
ROBN4 - 8530973 - Robins Reef, NJ 49 mi30 min W 9.9 G 14 75°F 1014 hPa
SDHN4 - 8531680 - Sandy Hook, NJ 49 mi30 min W 9.9 G 12 69°F 64°F1015.7 hPa

Wind History for Bridgeport, CT
(wind in knots)    EDIT      (on/off)   Help
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
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
Last
24hr
SW10
G15
SW10
SW8
G14
S10
G13
SW10
G14
S8
G11
S11
S11
G16
SW10
G14
SW8
G15
SW8
G12
SW7
G10
SW7
SW8
SW7
G10
SW8
G13
SW4
G7
SW4
SW3
W3
G6
W2
G5
W4
G9
NW2
G5
S6
1 day
ago
N10
G20
N12
G19
N14
G19
N13
G19
NW11
G19
NW13
G20
N11
G17
N11
G19
N11
G16
N7
N10
G13
N5
G8
N4
G7
N4
N3
NE3
S6
S5
SW1
S1
G4
SW5
SW5
S8
S8
G11
2 days
ago
SW5
G11
S7
G11
SE5
G8
SE6
S8
G12
SW7
G10
SE6
SW6
G10
SW9
SW5
G9
S5
S5
SW4
NW3
G6
W2
G7
W6
SW4
--
NW4
G8
NW4
G7
W8
G12
NW6
G13
NW6
G15
N6
G18

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Islip, Long Island Mac Arthur Airport, NY6 mi22 minW 1010.00 miA Few Clouds81°F63°F54%1013.5 hPa
Farmingdale - Republic Airport, NY14 mi25 minW 12 G 1510.00 miFair78°F63°F60%1013.8 hPa
Shirley, Brookhaven Airport, NY17 mi22 minW 11 G 1610.00 miFair79°F61°F54%1013.6 hPa

Wind History from ISP (wind in knots)
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
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
Last 24hrSW10SW8
G15
SW9S10
G18
S11S11S10
G18
S11S9S11S14S10
G20
S7S11SW9SW7SW9SW8SW6SW5W6W7NW9W10
1 day agoNW15
G25
NW17
G27
N18
G26
NW15
G25
NW21
G26
NW16NW14
G21
NW15N13N11N10N7SE11SE6SE8SE5E4E3E3CalmSW5SW6S8SW7
2 days agoS9S11
G18
S15
G20
S11
G19
SW18
G26
S10SW11SW10
G16
SW10SW9S8SW10SW11W7W6W5W6W6W12
G19
NW19
G31
NW19
G26
NW17
G33
NW13
G21
NW15
G23

Tide / Current Tables for Great River, Connetquot River, Long Island, New York
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Great River
Click for Map
Sun -- 01:43 AM EDT     Moonrise
Sun -- 05:21 AM EDT     0.68 feet High Tide
Sun -- 05:26 AM EDT     Sunrise
Sun -- 12:02 PM EDT     0.13 feet Low Tide
Sun -- 12:23 PM EDT     Moonset
Sun -- 12:34 PM EDT     Last Quarter
Sun -- 06:02 PM EDT     0.62 feet High Tide
Sun -- 08:12 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
0.20.30.40.50.60.70.70.60.40.30.20.20.10.20.30.40.50.60.60.60.50.40.30.3

Tide / Current Tables for Fire Island Radiobeacon, Long Island, New York
   EDIT      (on/off)   Help   One Week of Data
Fire Island Radiobeacon
Click for Map
Sun -- 01:43 AM EDT     Moonrise
Sun -- 02:48 AM EDT     0.68 feet High Tide
Sun -- 05:27 AM EDT     Sunrise
Sun -- 09:52 AM EDT     0.13 feet Low Tide
Sun -- 12:23 PM EDT     Moonset
Sun -- 12:34 PM EDT     Last Quarter
Sun -- 03:29 PM EDT     0.62 feet High Tide
Sun -- 08:12 PM EDT     Sunset
Sun -- 10:14 PM EDT     0.22 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
0.50.60.70.70.60.50.40.30.20.10.10.20.30.40.50.60.60.60.50.40.30.30.20.2

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_A
GOES Local Image of Northeast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for New York City/Upton, NY (11,2,3,4)
      (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.