Thursday, July29, 2021
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Marine Weather and Tides
Old Greenwich, CT

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
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 5:46AMSunset 8:15PM Thursday July 29, 2021 12:36 PM EDT (16:36 UTC) Moonrise 11:32PMMoonset 11:35AM Illumination 72% Phase: Waning Gibbous; Moon at 20 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- 1021 Am Edt Thu Jul 29 2021
Today..S winds 10 to 15 kt with gusts up to 20 kt. Seas 1 ft or less, then around 2 ft this afternoon. Chance of showers and tstms late this morning and early afternoon, then showers and tstms likely late with vsby 1 to 3 nm.
Tonight..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 1 ft or less. Showers and tstms likely, mainly in the evening. Vsby 1 to 3 nm.
Fri..W winds 10 to 15 kt, becoming nw 15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 1 ft or less, then around 2 ft in the afternoon.
Fri night..NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas around 2 ft.
Sat..W winds 5 to 10 kt. Seas 1 ft or less.
Sat night..W winds 5 to 10 kt. Seas 1 ft or less.
Sun..S winds 5 to 10 kt. Seas 1 ft or less. Chance of showers.
Sun night..SW winds 5 to 10 kt. Seas 1 ft or less. Chance of showers.
Mon..NW winds 5 to 10 kt. Seas 1 ft or less.
Mon night..N winds around 5 kt. Seas 1 ft or less. Winds and seas may be higher in and near tstms.
ANZ300 1021 Am Edt Thu Jul 29 2021
Synopsis for the long island waters and new york harbor.. A warm front will approach today, and may enter the waters late today before a cold front follows tonight. High pressure will build in for Friday into Saturday. Low pressure will pass to the north on Sunday, followed briefly by high pressure on Monday.


7 Day Forecast for Marine Location Near Old Greenwich, CT
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location: 41.01, -73.57     debug


Area Discussion for - New York City/Upton, NY
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FXUS61 KOKX 291434 AFDOKX

Area Forecast Discussion National Weather Service New York NY 1034 AM EDT Thu Jul 29 2021

SYNOPSIS. A warm front will approach from the southwest today, getting very close to the area late today into this evening before a cold frontal passage tonight. A secondary cold front will move through Friday afternoon, followed by high pressure building from the northern Plains through Saturday. Broad low pressure will move across northern New York state Sunday, followed briefly by high pressure on Monday. A low pressure system over the Ohio Valley will then bring unsettled weather through the rest of the week.

NEAR TERM /THROUGH TONIGHT/. This update accounts for some minor adjustments in PoPs and temperatures through the day and into tonight. Forecast remains mainly on track with some light showers trying to develop to our west ahead of a warm front approaching from the south. More substantial forcing and potentially strong to severe thunderstorms are possible ahead of a vigorous shortwave approaching later in the day.

High pressure remains over the area early this morning, with a stationary front extending from Lake Erie SE to the VA Tidewater region. The front should lift slowly NE today as a shortwave trough generating convection from Lake Huron and MI into N IN/IL approaches. An embedded MCV apparent on radar over SW MI will race ESE today across OH and western PA into the into the Mid Atlantic region and likely produce a swath of severe wx. SPC enhanced risk follows the projected path of this MCV into srn PA/NJ, but with the warm front lifting toward the area still expect sct to numerous showers and tstms this afternoon. Initial storms with the approaching warm front are unlikely to be severe due to limited instability/shear, then as instability and lift increase late this afternoon via cooling aloft with the approach of the shortwave trough, and as low level wind profiles increase, showers/tstms should become more numerous late this afternoon into this evening. Given veering/increasing low level wind profiles from SE-S to SW with 25 kt below 1 km AGL, and PW increasing to near 2 inches in the warm sector toward evening, some storms could produce damaging winds and/or very heavy rain, with an isolated tornado not out of the question. Greaser severe/heavy rain potential lies across NE NJ, NYC, and areas just north and east, where SPC has forecast a slight risk of severe tstms. The threat north/east of there is more marginal/conditional depending on the position of the warm front late today and also the track of the MCV.

High temps today should only be in the mid/upper 70s, with lows tonight in the 60s to near 70.

SHORT TERM /FRIDAY THROUGH SATURDAY/. The sfc cold front should pass east early Fri morning, with some lingering showers still possible over SE CT and ern Long Island early. A secondary dry cold front will pass through in the afternoon as the upper trough axis passes, and winds should shift NW and increase to 15-25 mph with gusts 30-35 mph during the late afternoon and early evening.

With downslope flow, temps daytime Fri in NYC metro and along the coast should reach the lower/mid 80s, with upper 70s to the NW. Fairly strong CAA for this time of year will result in some of the cooler temps seen so far this summer Fri night, with lows in the lower 60s in NYC, in the 50s most elsewhere, and some upper 40s well inland and in the Long Island Pine Barrens.

Dry wx should continue on Sat, with fair wx cu and also some mid level clouds mainly inland as a shortwave trough aloft approaches upstate NY and New England. High temps should range from the lower 80s in the NYC metro area, to the mid/upper 70s elsewhere.

LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/. An active synoptic pattern is expected to continue into the long term forecast. A trough axis extending from eastern Canada into the Great Lakes region pivots into New York state Sunday. A shortwave trough accelerates through the base of the trough reaching southern New York late Sunday into Monday morning provides the lift needed for additional showers and thunderstorms. It still uncertain how far south the showers will extend but the model agreement is valid enough for chance PoPs. The lull Monday afternoon is expected to be brief as the overall longwave trough deepens a second system late Monday into Tuesday beneath a 100kt upper level jet. This low pressure system rides the southwest flow from the Carolinas into the waters south of Island as a coastal low. This promotes another fair chance for showers Tuesday but the overall intensity will be questionable. Temperatures for the first half of the long term change little with max temps in the low 80s and overnight minimums in the mid 60s.

Heading into the middle of the week next week, long range guidance shows the southern portion of the longwave trough slowing its eastward movement and possibly becoming a cut off upper level low. This could setup a pattern of rich Gulf moisture being advected into the area coupled with slow synoptic progression. The uncertainty in where the axis of 1.80 to 2.00 in PWATS settles remains high. For now be aware of heavy rain potential in the latter half of the week next week.

AVIATION /14Z THURSDAY THROUGH MONDAY/. A warm front approaches from the southwest this afternoon and a frontal system pushes through the area this afternoon and evening.

MVFR cigs may have a hard time improving until potential line of shra/tsra moving in from the west in late afternoon/evening. NYC/NJ terminals have best chance of seeing a line of tsra in the aft/eve, which could be potentially strong to severe.

Timing of improvement in cigs this evening will depend on when organized convection moves through, but likelihood that MVFR/IFR cigs will return overnight tonight with isolated showers possible through midnight.

Mainly S-SE flow 8-12kt for coastal terminals will continue through the afternoon. Uncertainty on wind direction increases later this afternoon and evening especially in and around thunderstorms.

West north west winds following the day's storms 5-10 kts overnight could increase to 10-15kts with potential gusts Friday morning into the afternoon.

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

MVFR cigs likely continue into evening push. A line of tsra 20-02z could have MVFR to IFR conditions and wind gusts greater than what is currently indicated in the TAFs.

OUTLOOK FOR 12Z FRIDAY THROUGH MONDAY. Friday. Mainly VFR. Slight chance of a shower. NW winds G20kt late day/evening. Saturday. VFR. Sunday. Mainly VFR with chance of showers . mainly at night. Monday. VFR.

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

MARINE. Issued SCA for the ocean waters for late this afternoon into tonight. S flow with an approaching warm front likely to gust up to 25 kt during this time on the ocean, with seas building to 5 ft. Tstms will also present a hazard during this time.

After a brief lull, SCA conds likely on all waters Fri afternoon/night after a secondary cold frontal passage, with gusts 25-30 kt, also ocean seas building to 4-6 ft. Conds should fall below SCA criteria by Sat AM.

Winds Saturday evening are out of the southwest 10-15 kt and seas hover around 3 ft, so overall sub-SCA conditions likely to continue through Sunday, though ocean seas pick up to around 4-5 feet late Sunday ahead of a cold front. Northwest winds Monday become NE on Tuesday with the passage of a coastal low.

HYDROLOGY. There is the potential for 1/2 to 1 inch of rainfall this afternoon and tonight, with locally higher amounts possible. Minor urban and poor drainage flooding is possible.

TIDES/COASTAL FLOODING. A moderate risk of rip current development will develop at ocean beaches on Thursday due to building S wind waves and lingering SE swell. There is a moderate risk of rip current development at the ocean beaches again on Friday despite offshore flow, due to residual 3 ft S swell.

OKX WATCHES/WARNINGS/ADVISORIES. CT . None. NY . None. NJ . None. MARINE . Small Craft Advisory from 2 PM this afternoon to midnight EDT tonight for ANZ353-355. Small Craft Advisory from 2 PM this afternoon to 6 AM EDT Friday for ANZ350.

SYNOPSIS . BG/DJ NEAR TERM . BG/MW SHORT TERM . BG LONG TERM . DJ AVIATION . IRD/DJ MARINE . BG/DJ HYDROLOGY . BG/DJ TIDES/COASTAL FLOODING . BG


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44040 - Western Long Island Sound 4 mi66 min S 12 G 18 76°F 65°F
44022 - Execution Rocks 12 mi51 min S 14 76°F 68°F
KPTN6 - 8516945 - Kings Point, NY 17 mi48 min SW 18 G 21 75°F 1015.9 hPa
BRHC3 - 8467150 - Bridgeport, CT 24 mi48 min S 6 G 13 74°F 74°F1014.9 hPa
BATN6 - 8518750 - The Battery, NY 32 mi48 min 76°F 73°F1015.6 hPa
44069 33 mi36 min S 12 G 16 73°F 80°F69°F
ROBN4 - 8530973 - Robins Reef, NJ 36 mi48 min S 19 G 20 74°F 1015.1 hPa
BGNN4 - 8519483 - Bergen Point West Reach, NJ 40 mi48 min 77°F 76°F1015 hPa
MHRN6 40 mi48 min S 11 G 13
NWHC3 - 8465705 - New Haven, CT 40 mi48 min S 12 G 15 74°F 75°F1016.3 hPa
SDHN4 - 8531680 - Sandy Hook, NJ 44 mi48 min SSE 13 G 17 75°F 1016.1 hPa
44065 - Entrance to New York Harbor 45 mi26 min S 14 G 18 75°F1014.7 hPa

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 mi40 minS 10 G 2010.00 miMostly Cloudy75°F64°F69%1014.6 hPa
Farmingdale - Republic Airport, NY21 mi43 minS 14 G 2010.00 miMostly Cloudy77°F67°F71%1015.8 hPa
New York, La Guardia Airport, NY23 mi45 minS 1710.00 miOvercast79°F64°F60%1014.7 hPa

Link to 5 minute data for KHPN

Wind History from HPN (wind in knots)
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N7N85NE4N4CalmCalmS5SE4CalmCalmCalmCalmCalmCalmCalmSW5S3S7S7S10
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1 day agoS33S7S6S10
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S7S5NW15NW10NW12Calm3W4CalmSW3N4NW6NW5NW7N6N4N13N11NW11
2 days agoNW6NW11NW6NW10W8W6CalmW3NW3NW4CalmNW4NW4NW4NW5NW5NW5NW5NW4S3CalmNW445

Tide / Current Tables for Stamford, Connecticut (2)
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Stamford
Click for Map
Thu -- 03:47 AM EDT     7.18 feet High Tide
Thu -- 05:47 AM EDT     Sunrise
Thu -- 10:08 AM EDT     0.52 feet Low Tide
Thu -- 11:35 AM EDT     Moonset
Thu -- 04:15 PM EDT     7.38 feet High Tide
Thu -- 08:13 PM EDT     Sunset
Thu -- 10:40 PM EDT     0.78 feet Low Tide
Thu -- 11:30 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.64.25.86.97.26.55.33.82.31.10.50.92.13.75.36.77.37.16.24.83.31.910.8

Tide / Current Tables for Throg's Neck, Long Island Sound, New York Current
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Throg's Neck
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Thu -- 01:18 AM EDT     -0.00 knots Slack
Thu -- 04:25 AM EDT     -0.65 knots Max Ebb
Thu -- 05:49 AM EDT     Sunrise
Thu -- 07:27 AM EDT     0.00 knots Slack
Thu -- 10:33 AM EDT     0.89 knots Max Flood
Thu -- 11:36 AM EDT     Moonset
Thu -- 01:24 PM EDT     -0.00 knots Slack
Thu -- 04:47 PM EDT     -0.66 knots Max Ebb
Thu -- 07:47 PM EDT     0.00 knots Slack
Thu -- 08:13 PM EDT     Sunset
Thu -- 10:59 PM EDT     0.92 knots Max Flood
Thu -- 11:32 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.1-0.2-0.4-0.6-0.6-0.3-0.10.10.40.80.80.40.1-0.1-0.4-0.6-0.7-0.5-0.200.20.70.9

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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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