Wednesday, April21, 2021
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Marine Weather and Tides
New York, 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 6:06AMSunset 7:42PM Wednesday April 21, 2021 3:48 PM EDT (19:48 UTC) Moonrise 1:17PMMoonset 3:23AM Illumination 74% Phase: Waxing Gibbous; Moon at 10 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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ANZ338 NEw York Harbor- 1253 Pm Edt Wed Apr 21 2021
.small craft advisory in effect through Thursday afternoon...
.severe Thunderstorm watch 97 in effect until 6 pm edt this evening...
This afternoon..S winds around 15 kt, becoming W late. Gusts up to 25 kt. Waves 2 to 3 ft. Numerous tstms. Showers. Vsby 1 to 3 nm.
Tonight..NW winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to 3 ft. Chance of showers in the evening.
Thu..W winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to 3 ft.
Thu night..W winds 15 to 20 kt. Gusts up to 30 kt in the evening. Waves 2 to 3 ft.
Fri..W winds around 15 kt with gusts up to 25 kt. Waves 1 to 2 ft..
Fri night..W winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves 1 ft or less.
Sat..SW winds 5 to 10 kt. Waves 1 ft or less.
Sat night..SE winds around 10 kt with gusts up to 20 kt. Waves 1 ft or less. Rain likely.
Sun..N winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. Rain likely.
Sun night..NW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Winds and waves may be higher in and near tstms.
ANZ300 1253 Pm Edt Wed Apr 21 2021
Synopsis for the long island waters and new york harbor.. A strong cold front will move across the area this afternoon into early this evening. A frontal wave along the front will rapidly deepens, while passing to the west today, heading up into the canadian maritimes tonight into Thursday. At the same time, high pressure will build to the south and west of the area Thursday into Friday, passing offshore on Saturday.


7 Day Forecast for Marine Location Near New York, NY
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location: 40.55, -73.89     debug


Area Discussion for - New York City/Upton, NY
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FXUS61 KOKX 211806 AFDOKX

Area Forecast Discussion National Weather Service New York NY 206 PM EDT Wed Apr 21 2021

SYNOPSIS. A strong cold front will move across the area this afternoon into early this evening. A frontal wave along the front will rapidly deepen, while passing to the west today, heading up into the Canadian Maritimes tonight into Thursday. At the same time, high pressure will build to the south and west of the area Thursday into Friday, passing offshore on Saturday. Low pressure approaches from the southwest Saturday night, passing just to the south on Sunday. High pressure then builds back into the area for the start of the new work week.

NEAR TERM /UNTIL 8 PM THIS EVENING/. A severe thunderstorm watch is in effect for the entire region until 6PM this evening. Main threat is for damaging winds. The strong cold front will make for fast moving showers and thunderstorms, so any heavy rain will be very brief in duration. Therefore, no flooding is expected.

This is a low CAPE high shear environment. The low attached to the cold front will be deepening through the afternoon as it moves through New England. Bulk shear 0-6 km around 50 kt and surface CAPE of about 300-600 J/kg will be enough to give these thunderstorms the threat to produce damaging winds. The main mode for cells will be a squall line. Winds ahead of the line with the strengthening southerly synoptic flow ahead of the cold front are gusting up to 25 to 30 mph, especially along the coast.

Mesoscale models generally indicate that by around 4PM the main squall line of showers and thunderstorms will be across Southwest Connecticut and Western Long Island and just exiting the forecast region east of New London Connecticut and Eastern Long Island around 6PM.

Temperatures ahead of the line of thunderstorms will generally stay in the 60 to 70 degree range. The clouds and showers and thunderstorms will limit the temperatures.

Following the cold front, strong cold advection with a sharp shift of winds to the NW and deep cyclonic flow will allow for good mixing and gusty west winds (up to 35 mph).

SHORT TERM /8 PM THIS EVENING THROUGH FRIDAY NIGHT/. Any lingering showers will pass to the east early this evening. Clearing skies and gusty west winds will prevail. This combined with an unseasonably cold night across the region will give a winter-like feel. Overnight lows across the interior will drop to around 30, with the lower to mid 30s elsewhere. The freeze watch for Western Passaic, Orange, Putnam, Fairfield, and northern Middlesex have been upgraded to a freeze warning. Ironically, today is considered the start date for the growing season across this area.

Gusty winds continue on Thursday as the low pressure strengthens while moving over the Canadian Maritimes. High pressure also builds to our south and west, creating a strong pressure gradient over the region. W-NW wind gusts 25 to 35 mph are likely, and could reach 40 mph near the coast. Highs on Thursday will be well below normal in the upper 40s inland to the lower 50s near the coast. Winds weaken some Thursday night, but should still remain gusty enough to preclude frost again. Lows will be in the middle to upper 30s for most locations.

High pressure will build to the south and west through Friday and then off the Mid Atlantic coast Saturday. Temperatures will moderate back to near normal levels.

LONG TERM /SATURDAY THROUGH WEDNESDAY/. High pressure to the south moves farther offshore on Saturday as an amplifying trough and associated surface low over the Mississippi Valley begin to approach the region. While clouds will increase, the daylight hours are expected to remain dry.

Precipitation rapidly overspreads the area Saturday night as the low approaches and then passes over or just south of the region during the day on Sunday. Rain then gradually tapers off from southwest to northeast Sunday afternoon. As the low moves off to the northeast, gusty northwest flow is expected Sunday night into Monday as high pressure begins to build in from the west. Dry conditions are expected Monday and Tuesday as the high becomes more established.

After above normal temperatures on Saturday, highs on Sunday and Monday are expected to remain near to slightly below normal as the low impacts the area. Above normal temperatures will then return on Tuesday with plenty of sunshine.

AVIATION /17Z WEDNESDAY THROUGH SUNDAY/. A strong cold front will move across the region this afternoon. High pressure then builds toward the area tonight into Thursday.

A line of scattered showers and thunderstorms have developed and are expected to cross the area between 18Z-22Z, with MVFR ceilings and IFR visibilities possible in any thunderstorms. Conditions then quickly improve back to VFR this evening.

South to southwest winds will gust to 20 to 25 kt as the front crosses the area this afternoon, winds will quickly shift to the NW and increase in speed, with gusts 30-35 kt possible through tonight behind the front. Gusts to over 40 kt are possible in any thunderstorms this afternoon. Winds will remain gusty through Thursday.

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

Amendments are possible this afternoon for timing of showers/thunderstorms.

OUTLOOK FOR 12Z THURSDAY THROUGH MONDAY. Thursday. VFR. WNW gusts 25-35kt. Friday. VFR. WNW gusts 20-25kt. Saturday. VFR. Saturday night-Sunday. MVFR/IFR in rain. Monday. VFR.

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

MARINE. S flow increases ahead of a strong cold front this afternoon, with SCA conditions on the ocean waters and on all waters. The cold front moves across much of the waters by evening, clearing the easternmost waters of the forecast region early this evening. Gale Warning remains in effect on the ocean for frequent gusts over 34 knots tonight into Thursday. The SCA on the non ocean waters continues Wednesday night and will continue into Thursday.

Lingering SCA conditions likely on Friday in a gradually diminishing west flow, especially on the ocean.

Sub-SCA conditions are expected on Saturday before both winds and seas increase Saturday night into Sunday as low pressure crosses the waters. Gusts to 25 kt are possible on all waters, especially Sunday afternoon into Sunday night as flow turns to the northwest behind the departing low. Seas on the ocean will increase to 5 ft Sunday morning, then to 6-8 ft late Sunday into Sunday night.

FIRE WEATHER. Both Thursday and Friday may pose an elevated risk of wildfire spread due to low RH and gusty west winds. Rainfall amounts today will be on the order of 0.25 to 0.50 inches. This will likely factor into how quickly fine fuels can dry out. So, the greater risk may come on Friday. Land managers will be contacted today to discuss forecast fuel moisture during this time

HYDROLOGY. Rainfall through early this evening will have amounts ranging from around a quarter to half an inch. No hydrologic impacts are expected through the week.

OKX WATCHES/WARNINGS/ADVISORIES. CT . Freeze Warning from 2 AM to 9 AM EDT Thursday for CTZ005-006. NY . Freeze Warning from 2 AM to 9 AM EDT Thursday for NYZ067-068. NJ . Freeze Warning from 2 AM to 9 AM EDT Thursday for NJZ002. MARINE . Small Craft Advisory until 6 PM EDT Thursday for ANZ331-332- 335-338-340-345. Small Craft Advisory until 6 PM EDT this evening for ANZ350- 353-355. Gale Warning from 6 PM this evening to 6 PM EDT Thursday for ANZ350-353-355.

SYNOPSIS . DW NEAR TERM . JM SHORT TERM . DW LONG TERM . FEB AVIATION . Fig MARINE . FEB/DW FIRE WEATHER . HYDROLOGY . FEB/DW


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SDHN4 - 8531680 - Sandy Hook, NJ 9 mi55 min W 33 G 46 56°F 1001.3 hPa
BATN6 - 8518750 - The Battery, NY 12 mi55 min 58°F 50°F1000.9 hPa
ROBN4 - 8530973 - Robins Reef, NJ 12 mi55 min WNW 33 G 38 60°F 999.7 hPa
BGNN4 - 8519483 - Bergen Point West Reach, NJ 15 mi55 min 53°F1000.1 hPa
44065 - Entrance to New York Harbor 16 mi39 min SW 18 G 23 49°F1000 hPa
MHRN6 16 mi55 min WNW 30 G 39
KPTN6 - 8516945 - Kings Point, NY 19 mi55 min WSW 14 G 17 58°F 1000.3 hPa
44025 - LONG ISLAND 33 NM South of Islip, NY 44 mi39 min S 19 G 23 48°F999.1 hPa
44069 44 mi49 min S 19 G 23 55°F 56°F51°F

Wind History for Sandy Hook, NJ
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
New York, Kennedy International Airport, NY10 mi58 minS 25 G 308.00 miThunderstorm Light Rain and Windy54°F50°F87%999.6 hPa
New York, La Guardia Airport, NY16 mi58 minWSW 96.00 miThunderstorm Haze60°F53°F78%1000.1 hPa
New York City, Central Park, NY16 mi58 minno data10.00 miMostly Cloudy59°F49°F69%1000.6 hPa
Newark, Newark International Airport, NJ19 mi58 minW 28 G 3910.00 miThunderstorm Light Rain and Windy59°F46°F62%1000.7 hPa
Teterboro, Teterboro Airport, NJ23 mi58 minWNW 20 G 2510.00 miOvercast and Breezy56°F47°F72%1000.4 hPa

Link to 5 minute data for KJFK

Wind History from JFK (wind in knots)
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1 day agoS13S10S5S4S3SW11SW9SW7SW8W6W8SW8SW6SW7SW7SW5SW9SW15SW12SW13S10S10S12S15
2 days agoS17S18S13S13S7CalmS5SW3SW4SW6CalmSW6SW5CalmCalmE3CalmE5SE6SE8SE10SE11SE9SE10

Tide / Current Tables for Barren Island, Rockaway Inlet, Long Island, New York
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Barren Island
Click for Map
Wed -- 02:54 AM EDT     4.87 feet High Tide
Wed -- 03:23 AM EDT     Moonset
Wed -- 06:07 AM EDT     Sunrise
Wed -- 10:00 AM EDT     0.88 feet Low Tide
Wed -- 01:16 PM EDT     Moonrise
Wed -- 03:54 PM EDT     4.39 feet High Tide
Wed -- 07:41 PM EDT     Sunset
Wed -- 10:07 PM EDT     1.06 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.34.24.74.94.63.932.21.51.10.91.11.92.93.74.24.44.13.42.51.81.31.11.3

Tide / Current Tables for The Narrows, Midchannel, New York Harbor, New York Current
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The Narrows
Click for Map
Wed -- 02:25 AM EDT     1.43 knots Max Flood
Wed -- 03:24 AM EDT     Moonset
Wed -- 05:41 AM EDT     -0.00 knots Slack
Wed -- 06:08 AM EDT     Sunrise
Wed -- 09:08 AM EDT     -1.73 knots Max Ebb
Wed -- 12:52 PM EDT     0.00 knots Slack
Wed -- 01:16 PM EDT     Moonrise
Wed -- 03:01 PM EDT     1.20 knots Max Flood
Wed -- 06:07 PM EDT     -0.00 knots Slack
Wed -- 07:42 PM EDT     Sunset
Wed -- 09:27 PM EDT     -1.61 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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00.81.41.41.10.5-0.3-1-1.5-1.7-1.6-1.1-0.60.10.91.21.10.80.1-0.7-1.2-1.6-1.5-1.1

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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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