Friday, March5, 2021
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Marine Weather and Tides
Stony Brook, 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 6:18AMSunset 5:49PM Friday March 5, 2021 8:55 PM EST (01:55 UTC) Moonrise 1:23AMMoonset 11:10AM Illumination 51% 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
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ANZ335 Long Island Sound West Of New Haven Ct/port Jefferson Ny- 558 Pm Est Fri Mar 5 2021
.small craft advisory in effect through late tonight...
Tonight..NW winds 15 to 20 kt with gusts up to 30 kt, becoming W 10 to 15 kt with gusts up to 25 kt late this evening and overnight. Seas 1 to 2 ft.
Sat..NW winds 10 to 15 kt with gusts up to 20 kt. Seas 1 to 2 ft.
Sat night..NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 1 ft or less.
Sun..NW winds 5 to 10 kt. Seas 1 ft or less.
Sun night..N winds around 10 kt. Seas 1 ft or less.
Mon..NW winds 5 to 10 kt, becoming W 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 5 to 10 kt. Seas 1 ft or less.
Wed..S winds 5 to 10 kt. Seas 1 ft or less.
Wed night..SW winds around 10 kt. Seas 1 ft or less.
ANZ300 558 Pm Est Fri Mar 5 2021
Synopsis for the long island waters and new york harbor.. The waters will remain between strong low pressure over eastern canada and high pressure building southeast from central canada into the upper midwest to start the weekend. The high builds over the waters Sunday, and then shifts to the south and east into the middle of next week.


7 Day Forecast for Marine Location Near Stony Brook, NY
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location: 40.92, -73.15     debug


Area Discussion for - New York City/Upton, NY
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FXUS61 KOKX 052342 AFDOKX

Area Forecast Discussion National Weather Service New York NY 642 PM EST Fri Mar 5 2021

SYNOPSIS. The region will remain between strong low pressure over Eastern Canada and high pressure building southeast from central Canada into the Upper Midwest to start the weekend. High pressure builds across the area Sunday, and then shifts to the south and east into the middle of next week. The high moves offshore Wednesday and Thursday. A cold front approaches from the west Thursday and becomes nearly stationary across the region Friday.

NEAR TERM /UNTIL 6 AM SATURDAY MORNING/. Updated for dew points running lower than forecast as a dry airmass remains across the region. Otherwise, updated for current temperatures and winds, and gusts.

A slowly dissipating polar vortex over eastern Canada will remain nearly stationary through Saturday. This will maintain a deep-layered NW flow, which will funnel unseasonably cold air into the region for the weekend.

Gusty NW winds up to 30 mph early in the evening will gradually weaken through the overnight. A large area of cyclonic flow across eastern Canada and the Northeast will also allow for low-level moisture to filter in at the base of an inversion around 85h, resulting in partly to mostly cloudy skies the second half of the night.

Lows tonight will range from around 20 inland, to the lower and mid 20s at the coast. This is about 5 degrees below normal.

SHORT TERM /6 AM SATURDAY MORNING THROUGH SATURDAY NIGHT/. Unseasonably cold conditions will continue due the aforementioned upper low across eastern Canada. NW winds will also be weaker on Saturday, but still looking at gusts 20-25 mph. RH values will be higher, 30 to 40 percent, so no plans for a fire weather statement. KBDI also still supports high ground level moisture.

Clouds will be more prevalent on Saturday with cyclonic flow and continued cold advection. Much of the area should be mostly cloudy in the afternoon due to steepening low-level lapse rates and weak instability. Have maintained snow flurries well north and west of NYC. A WNW flow is typically not conducive for this, but cyclonic flow could help sustain snow shower activity farther downwind of the eastern Great Lakes.

Highs Saturday will top out in the lower 30s inland, the to mid and upper 30s at the coast (highest NYC metro).

Skies clear Saturday night with the loss of heating and high pressure building in from the west. Lows will range from the upper teens inland, to the lower and mid 20s at the coast.

LONG TERM /SUNDAY THROUGH FRIDAY/. The eastern trough and low over eastern Canada early Sunday will be a little slower to move eastward, and heights will beginning to rise late Sunday afternoon as the upper ridge moves into the Great Lakes region. Heights will then continue to rise through Wednesday night as the ridge is re enforced from a building ridge moving in from the central U.S and the Gulf of Mexico region.

Deep northwest flow continues into Sunday night with temperatures remaining below normal. 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 20 degrees above normal seasonal levels, especially across inland locations, away from the influence of cooler ocean waters. Ocean waters temperatures remain in the lower 40s. At this time no record highs are in jeopardy Wednesday and Thursday with record highs in the upper 60s and 70s.

The forecast has become a little more uncertain with the approach of a cold front for Thursday into Friday, as the eastern ridge is a little more amplified and split flow has now developed with the northern stream trough farther to the north, mainly across southern Canada, and the shortwave moving out of the western trough and tracking into the plains and then the Great Lakes upper midwest region. The cold front will be a little slower to move into the area, and then become nearly stationary as the southern stream frontal wave moves into the Appalachians late Friday. With the uncertainty and to keep some continuity will have slight chance to low end chance probabilities mainly Thursday night through Friday. And while Friday will likely remain above normal for temperatures, cloud cover, and the timing of the front will affect the highs for the day.

AVIATION /00Z SATURDAY THROUGH WEDNESDAY/. The region remains between high pressure centered over south central Canada and low pressure centered over southeastern Canada.

VFR through TAF period. Stratocumulus likely Saturday may produce ceilings around 4K ft mid-morning throughout the afternoon

NW winds will diminish this evening, but still gust 20-25kt. Occasional gusts of 25-30 kt are possible through 03Z. W-NW winds near 15kt with gusts to 20 kt possible Saturday.

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

Winds could vary on either side of 310 degrees at any point tonight but more likely to stay left of 310 magnetic.

Occasional gusts 25-30 kt are possible through 03Z

OUTLOOK FOR 00Z SUNDAY THROUGH WEDNESDAY. Saturday night through Wednesday. VFR.

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

MARINE. No changes to winds and seas at this time.

SCA conditions will continue tonight, lingering into the morning on the ocean waters. Gusty NW winds on the backside of low pressure across eastern Canada will gradually weaken into Saturday night as high pressure builds in from the west.

With high pressure dominating across the forecast waters Sunday through Wednesday winds and seas will remain below SCA levels. With high pressure off the coast Thursday, as a cold front approaches, southwesterly winds will strengthen, and ocean seas will be approaching 5 feet late Wednesday night.

HYDROLOGY. No hydrologic concerns through the period.

OKX WATCHES/WARNINGS/ADVISORIES. CT . None. NY . None. NJ . None. MARINE . Small Craft Advisory until 6 AM EST Saturday for ANZ330-335- 338-340-345. Small Craft Advisory until 1 PM EST Saturday for ANZ350-353- 355.

SYNOPSIS . MET/DW NEAR TERM . DW SHORT TERM . DW LONG TERM . MET AVIATION . JP MARINE . MET/DW HYDROLOGY . MET/DW


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BRHC3 - 8467150 - Bridgeport, CT 18 mi56 min NW 4.1 G 7 32°F 37°F1011.1 hPa (+2.3)
NWHC3 - 8465705 - New Haven, CT 28 mi56 min NNW 11 G 13 33°F 36°F1011.9 hPa (+2.7)
44039 - Central Long Island Sound 30 mi56 min W 19 G 27 34°F 37°F4 ft
44022 - Execution Rocks 31 mi56 min W 12 G 16 34°F 10°F
KPTN6 - 8516945 - Kings Point, NY 33 mi56 min N 13 G 17 35°F 1013.1 hPa (+1.8)
44025 - LONG ISLAND 33 NM South of Islip, NY 46 mi46 min WNW 21 G 25 41°F1011.9 hPa
44065 - Entrance to New York Harbor 48 mi46 min W 19 G 23 41°F1012 hPa
BATN6 - 8518750 - The Battery, NY 48 mi56 min 35°F 38°F1012.9 hPa (+1.6)

Wind History for Bridgeport, CT
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Islip, Long Island Mac Arthur Airport, NY9 mi60 minWNW 1110.00 miFair32°F3°F29%1011.5 hPa
Shirley, Brookhaven Airport, NY17 mi60 minWNW 810.00 miFair32°F4°F30%1011.8 hPa
Bridgeport, Sikorsky Memorial Airport, CT18 mi64 minWNW 9 G 1510.00 miFair34°F1°F25%1011.2 hPa
Farmingdale - Republic Airport, NY19 mi63 minNW 810.00 miFair34°F2°F25%1011.9 hPa

Link to 5 minute data for KISP

Wind History from ISP (wind in knots)
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Tide / Current Tables for Stony Brook, Smithtown Bay, Long Island Sound, New York
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Stony Brook
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Fri -- 12:22 AM EST     Moonrise
Fri -- 03:41 AM EST     6.34 feet High Tide
Fri -- 06:20 AM EST     Sunrise
Fri -- 10:10 AM EST     Moonset
Fri -- 10:15 AM EST     -0.15 feet Low Tide
Fri -- 04:20 PM EST     5.42 feet High Tide
Fri -- 05:48 PM EST     Sunset
Fri -- 08:32 PM EST     Last Quarter
Fri -- 10:33 PM EST     0.37 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.33.95.36.16.35.64.42.91.50.4-0.10.112.33.74.85.45.34.53.32.11.10.50.4

Tide / Current Tables for Mount Sinai Harbor, Long Island Sound, New York
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Mount Sinai Harbor
Click for Map
Fri -- 12:22 AM EST     Moonrise
Fri -- 03:38 AM EST     6.27 feet High Tide
Fri -- 06:19 AM EST     Sunrise
Fri -- 10:09 AM EST     Moonset
Fri -- 10:23 AM EST     -0.15 feet Low Tide
Fri -- 04:17 PM EST     5.36 feet High Tide
Fri -- 05:48 PM EST     Sunset
Fri -- 08:32 PM EST     Last Quarter
Fri -- 10:41 PM EST     0.36 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.23.85.26.16.25.64.42.91.60.5-0.100.92.23.64.75.35.24.43.32.21.20.50.4

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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.
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