Friday, March5, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Greenport, NY

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:16AMSunset 5:47PM Friday March 5, 2021 2:12 AM EST (07:12 UTC) Moonrise 1:20AMMoonset 11:07AM Illumination 59% Phase: Waning Gibbous; Moon at 21 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
ANZ340 Peconic And Gardiners Bays- 139 Am Est Fri Mar 5 2021
.small craft advisory in effect through this afternoon...
Overnight..NW winds 20 to 25 kt with gusts up to 30 kt. Waves around 2 ft.
Fri..NW winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft.
Fri night..NW winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft.
Sat..NW winds 10 to 15 kt. Waves 1 ft or less.
Sat night..NW winds 10 to 15 kt. Waves 1 ft or less.
Sun..NW winds 5 to 10 kt. Waves 1 ft or less.
Sun night..N winds around 10 kt. Waves 1 ft or less.
Mon..NW winds 5 to 10 kt. Waves 1 ft or less.
Mon night..W winds 5 to 10 kt. Waves 1 ft or less.
Tue..SW winds around 10 kt. Waves 1 ft or less.
Tue night..W winds 5 to 10 kt. Waves 1 ft or less.
ANZ300 139 Am Est Fri Mar 5 2021
Synopsis for the long island waters and new york harbor.. The coastal waters will remain between strong low pressure over the canadian maritimes and high pressure situated over southern canada and the upper midwest through the weekend. The high will build over the waters Sunday and remain in control Monday and Tuesday.


7 Day Forecast for Marine Location Near Greenport, NY
   Hourly   EDIT   Help
location: 41.1, -72.37     debug


Area Discussion for - New York City/Upton, NY
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KOKX 050644 AFDOKX

Area Forecast Discussion National Weather Service New York NY 144 AM EST Fri Mar 5 2021

SYNOPSIS. Low pressure system north of Maine meanders over eastern Canada through Friday as a high pressure over central Canada dives south into the Great Lakes region. The high will build over the region Sunday and remain in control Monday, and then shift to the south and east into the middle of next week. The high moves offshore Wednesday night and Thursday as a cold front slowly approaches from the west.

NEAR TERM /THROUGH TODAY/. Forecast is generally on track. Just a few minor adjustments with respect to winds over land, thus adjusted up with winds for the next few hours.

High pressure north of the Great Lakes Region continues to force dry air from the northwest into the local area. Winds around 15-20 mph drive dew points down from the teens into the single digits overnight. Likewise a chilly night is in store as ambient temperatures fall into the low 20s and upper teens. Sky cover remains rather clear with possibly some mid-level clouds creeping in prior to sunrise as a weak reinforcing cold front pushes south into Long Island.

SHORT TERM /TONIGHT THROUGH 6 PM SATURDAY/. Trough north of Maine remains quasi-stationary through Friday with dry conditions dominating for the day. As the surface low over eastern Canada slowly fills, the high pressure system over central Canada nudges south following the upper level southwesterly flow. Locally this maintains and even slightly strengthens the pressure gradient over the Northeast states and northwest winds over souther New York remain stable 15-20 mph with gusts up to 30 mph. Temperatures by the afternoon will be around 10 degrees colder on average that the day prior settling back in the mid to low 30s. Additionally, wind chills will make it feel like the low 20s even with clear skies.

As the Sun sets expect winds to decouple and gusts to come to a end for the evening. The relaxing winds and end to the mixing should allow dew points to slightly recover overnight. This does help overnight minimums which are expected to be in the mid to low 20s throughout the area.

LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/. Upper ridging will be building into the eastern U.S. beginning Saturday, as a deep closed upper low over eastern Canada and the northeast weakens and slowly tracks east, and continuing into Wednesday. A cool airmass will remain over the northeast Saturday with weak cold advection gradually ending into Saturday night. With surface high pressure to the west Saturday, a gusty northwest flow will dominate, and temperatures will remain up to 10 degrees below normal. Deep northwest flow will continue Saturday night through Sunday night as heights slowly rise with the approach of the ridge axis. Below normal temperatures are expected into Monday, however, weak warm advection begins to setup during Monday as low level winds gradually back, and a warming trend begins. The warming will then continue into the end of the week, with stronger warming expected Wednesday and Thursday as the surface high and upper ridge begin to move offshore. By Thursday temperatures may be as much as 10 to 15 degrees above normal seasonal levels. The southwesterly flow that does set up Tuesday through Thursday will keep temperatures along the coast several degrees lower as ocean water temperature remain in the lower 40s. A frontal system will be approaching for Thursday, however, the trend has been for the eastern ridge to be slower to move offshore as the trough deepens across the central U.S. As a result, will have low to slight chance probabilities for Thursday, with the possibility of Thursday remaining dry.

AVIATION /07Z FRIDAY THROUGH TUESDAY/. VFR with gusty NW winds as the region remains between high pressure over the Midwest and low pressure over the Canadian Maritimes.

NW winds 15-20G25-30kt, which may lull somewhat to 15-20G20-25kt right before the into the AM push, then pick up again to 15-20G25- 30kt, while shifting slightly right of, on, or just left of 310 mag.

. NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty .

Occasional gusts around 30-35 kt are possible through 09z.

OUTLOOK FOR 06Z SATURDAY THROUGH TUESDAY. Friday night and Saturday. VFR. NW winds 10-15G20kt. Saturday night through Tuesday. VFR.

Detailed information, including hourly TAF wind component forecasts, can be found at: http:/www.weather.gov/zny/n90

MARINE. With the gusty winds, elevated seas, and low temperatures expected later tonight into Friday morning, updated to add a chance of light freezing spray to the ocean waters and eastern Long Island Sound.

Persistent SCA criteria offshore winds remain through the short-term forecast. Particularly offshore gusts between 25-30 kts are expected through Saturday morning. Waves are anticipated to hold around 4 feet through late Friday before beginning to wane possibly Saturday morning.

Small craft advisory wind gusts will be possible across all the forecast waters Saturday morning as deep low pressure continues to meander through the Canadian Maritimes and high pressure builds to the west. In addition, ocean seas will be subsiding to below 5 feet in a west to northwest flow. Conditions will be gradually improving through Saturday from west to east, as high pressure builds toward the waters from the northwest. There is some uncertainty as to how quickly the high builds toward the forecast waters, and SCA conditions may linger into late Saturday. After Saturday tranquil conditions are expected into early next week as high pressure dominates.

HYDROLOGY. The dry weather regime will continue, thus there are no hydrologic concerns into the middle of next week.

OKX WATCHES/WARNINGS/ADVISORIES. CT . None. NY . None. NJ . None. MARINE . Small Craft Advisory until 6 PM EST this evening for ANZ330- 335-338-340-345. Small Craft Advisory until 7 AM EST Saturday for ANZ350-353- 355.

SYNOPSIS . DJ/MET NEAR TERM . JE/DJ SHORT TERM . DJ LONG TERM . MET AVIATION . JC MARINE . DJ/MET HYDROLOGY . DJ/MET


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
44039 - Central Long Island Sound 15 mi73 min WNW 25 G 33 29°F 37°F5 ft
LDLC3 - New London Ledge CT - Ledge Light Weather 21 mi63 min NW 21 G 32 26°F 1004.5 hPa
MTKN6 - 8510560 - Montauk, NY 22 mi55 min 28°F 1007.7 hPa
NLNC3 - 8461490 - New London, CT 23 mi55 min 26°F 1007.5 hPa
NWHC3 - 8465705 - New Haven, CT 31 mi55 min NNW 19 G 27 28°F 37°F1009.3 hPa
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 33 mi43 min NW 27 G 37 30°F 42°F1008.2 hPa19°F
BRHC3 - 8467150 - Bridgeport, CT 43 mi55 min NW 7 G 12 26°F 37°F1009.3 hPa

Wind History for New London, CT
(wind in knots)    EDIT      (on/off)   Help
Last
24hr
1 day
ago
2 days
ago

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chester, Chester Airport, CT21 mi78 minNW 13 G 2710.00 miFair23°F1°F39%1006.8 hPa
The Gabreski Airport, NY23 mi20 minNW 17 G 2710.00 miFair26°F8°F46%1008.5 hPa
Groton / New London, Groton / New London Airport, CT23 mi17 minNW 12 G 2110.00 miPartly Cloudy25°F4°F40%1007.1 hPa
Montauk, Montauk Airport, NY24 mi19 minNW 15 G 25 mi28°F10°F47%1007.4 hPa

Link to 5 minute data for KSNC

Wind History from SNC (wind in knots)
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
12
AM
1
AM
2
AM
Last 24hrCalmNW4CalmCalm3CalmCalmNW7
G13
NW13
G28
NW15NW14
G25
NW14
G27
NW10
G24
NW11
G24
NW14
G21
NW16
G25
NW12NW11
G22
NW8
G22
NW15
G27
NW13
G21
NW15
G24
NW16
G24
NW13
G23
1 day agoW6
G12
4W8
G13
W7
G14
5
G12
W6
G12
W84
G11
W6NW7
G12
5
G14
W86NW9NW7
G14
NW4
G10
NW3--NW4CalmNW4NW5NW6NW3
2 days agoNW14
G26
NW15
G31
NW22
G40
NW11
G39
NW11
G28
NW13
G22
NW14
G27
NW18
G32
NW17
G29
NW18
G26
NW18
G31
NW17
G23
NW19
G30
NW7
G18
NW10
G26
NW13
G22
W8
G16
W6
G14
3W34365

Tide / Current Tables for Greenport, Shelter Island Sound, New York
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Shinnecock Canal, Railroad Bridge, New York Current
   EDIT      (on/off)   Help   One Week of Data
Shinnecock Canal
Click for Map
Fri -- 12:19 AM EST     Moonrise
Fri -- 01:52 AM EST     -0.00 knots Slack
Fri -- 05:06 AM EST     -1.56 knots Max Ebb
Fri -- 06:17 AM EST     Sunrise
Fri -- 08:52 AM EST     0.00 knots Slack
Fri -- 10:07 AM EST     Moonset
Fri -- 11:08 AM EST     1.18 knots Max Flood
Fri -- 02:04 PM EST     -0.00 knots Slack
Fri -- 05:22 PM EST     -1.43 knots Max Ebb
Fri -- 05:45 PM EST     Sunset
Fri -- 08:32 PM EST     Last Quarter
Fri -- 08:53 PM EST     0.00 knots Slack
Fri -- 11:34 PM EST     1.55 knots Max Flood
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
1.30.8-0.1-0.9-1.4-1.6-1.4-1-0.60.10.81.21.10.70.1-0.7-1.2-1.4-1.4-1-0.50.10.91.5

Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS Local Image of Northeast    EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
Link to Loop

Other links: GEOS-West     Contential US     Full GOES-East
Ground Weather Radar Station




Please read website Cookie, Privacy, and Disclamers by clicking HERE.