Friday, April3, 2020
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Marine Weather and Tides
Guilford Center, CT

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:27AMSunset 7:19PM Friday April 3, 2020 6:09 AM EDT (10:09 UTC) Moonrise 1:56PMMoonset 4:05AM Illumination 78% 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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ANZ330 Long Island Sound East Of New Haven Ct/port Jefferson Ny- 532 Am Edt Fri Apr 3 2020
.small craft advisory in effect through late tonight...
Today..N winds 15 to 20 kt with occasional gusts up to 35 kt, increasing to 20 to 25 kt with gusts up to 35 kt early this afternoon, then diminishing to 15 to 20 kt with gusts up to 35 kt late. Seas 2 to 4 ft. Rain, mainly early.
Tonight..N winds 15 to 20 kt occasional with gusts up to 35 kt. Seas 2 to 4 ft. Chance of rain in the evening.
Sat..NE winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft.
Sat night..E winds 5 to 10 kt. Seas 2 to 3 ft.
Sun..S winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas around 2 ft.
Sun night..SW winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft in the evening, then 1 ft or less.
Mon..W winds 5 to 10 kt. Seas 1 ft or less.
Mon night..W winds 5 to 10 kt. Seas 1 ft or less.
Tue..W winds around 5 kt, becoming S in the afternoon. Seas 1 ft or less.
Tue night..S winds 5 to 10 kt. Seas 1 ft or less.
ANZ300 532 Am Edt Fri Apr 3 2020
Synopsis for the long island waters and new york harbor.. Low pressure well east of long island will shift south through tonight and then gradually east into the atlantic on Saturday. Weak high pressure will build over the region this weekend before a weak cold front crosses the area Sunday night. High pressure then briefly returns on Monday, followed by an approaching frontal system for the middle of next week.


7 Day Forecast for Marine Location Near Guilford Center, CT
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location: 41.27, -72.67     debug


Area Discussion for - New York City/Upton, NY
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FXUS61 KOKX 030938 AFDOKX

Area Forecast Discussion National Weather Service New York NY 538 AM EDT Fri Apr 3 2020

SYNOPSIS. Low pressure well east of Long Island will meander through tonight and then gradually out into the Atlantic on Saturday. Weak high pressure will be over the region this weekend before a weak cold front crosses the area Sunday night. High pressure then briefly returns on Monday, followed by an approaching frontal system for the middle of next week.

NEAR TERM /UNTIL 6 PM THIS EVENING/. Strong offshore low pressure continues to move westward this morning as it slowly weakens. Rain bands will move southwestward around the large circulation during the day with the highest probability of rain occurring this morning. The highest chance exists across Long Island and Connecticut with lower chances further west across New York City, Lower Hudson Valley, and Northeast New Jersey. Dry air and subsidence on the outer periphery of the rain shield has been limiting rainfall from the city on west. Some of this should be overcome this morning with better forcing. The thermal forcing wanes in the afternoon as the low weakens and drifts south away from the coast. This will lead to rain bands diminishing into the evening hours. Rainfall amounts will be light and generally around a tenth of an inch or less.

Winds will continue gusting 25-30 mph today with some isolated gusts to around 35 mph closer to the Forks of Long Island.

Highs range from the upper 40s across Eastern Long Island and Southeast Connecticut and the lower 50s elsewhere.

SHORT TERM /6 PM THIS EVENING THROUGH SATURDAY NIGHT/. The offshore low will slowly move south and east away from the Eastern Seaboard tonight. Thermal forcing looks weak and the chance for any rain diminishes through the night. There will likely be some lingering energy wrapping around the offshore low along with moisture in the low and middle levels. This will keep mostly cloudy to overcast skies through the night. Low temperatures will be in the 40s across the region. Other than gusty winds 25-30 mph across the Forks of Long Island and Southeast Connecticut, winds should be weakening through the night.

The low continues moving offshore on Saturday but the region will likely lie on the outer periphery of the upper low and cyclonic low aloft. Moisture profiles show abundant moisture in the lower levels which indicates at least mostly cloudy skies. There should be enough breaks for partial sunshine allowing temperatures to reach the middle and upper 50s along and west of the Hudson River Corridor. Further east across Long Island and Connecticut, temperatures will generally be in the lower 50s due to influence of NE flow.

Upper and surface ridging builds over the northeast Saturday night. Models are continuing to show a vort max trapped within the ridge. However, due to the ridging aloft and at the surface, do not think any precipitation will occur. Mostly cloudy skies will be the likely result on Saturday night with temperatures falling into the upper 30s out east and lower to middle 40s elsewhere.

LONG TERM /SUNDAY THROUGH THURSDAY/. The ridge slides to the east on Sunday as heights fall a bit with an approaching shortwave. The surface high drifts offshore as a weakening cold front associated with the shortwave approaches. These systems will bring another day of mostly cloudy skies. With the front weakening as it reaches the local area, rain chances continue to look very limited. A slight chance for a few showers will be late Sunday afternoon into Sunday evening across portions of the Lower Hudson Valley and interior southern Connecticut. A few additional showers are possible overnight across eastern Connecticut and Long Island as the front pushes east of the area. High pressure then briefly builds back across the area on Monday before quickly shifting offshore by evening.

Unsettled weather then returns for the middle of the week as a disorganized low pressure system traversing the middle of the country tries to lift a warm front towards the region Tuesday into Wednesday. Models then differ in the strength and position of high pressure over eastern Canada and the role it plays in potentially slowing an approaching low over southern Canada towards the end of the long term. Given the high degree of uncertainty, maintained a slight chance to chance of showers throughout the Tuesday-Thursday period, but suspect at least some portion of this period will end up remaining dry. These features should be better resolved over the coming days.

Temperatures will remain several degrees above normal through much of the long term, with highs generally in the upper 50s to lower 60s from NYC north and west and in the mid 50s across Long Island and coastal Connecticut. Overnight lows will generally fall into the low to mid 40s in typically cooler outlying locations and remain in the mid to upper 40s in the New York City metro area.

AVIATION /10Z FRIDAY THROUGH TUESDAY/. A low pressure system will drift south over the Atlantic Friday

VFR conditions are expected most of the night. MVFR clouds move south over TAF sites prior to sunrise. These clouds should hold through the TAF period.

Gusty NW winds will veer to the N on Fri. Strongest gusts will be mainly tonight with some gusts up to 30kts possible lingering until the afternoon.

OUTLOOK FOR 06Z SATURDAY THROUGH MONDAY. Friday night. MVFR cigs, possibly improving to VFR at times. Chance evening showers. Saturday. MVFR cigs in the morning, then VFR. Saturday night. VFR, then MVFR cigs late. Sunday. Periods of MVFR. Monday and Tuesday. Mainly VFR.

MARINE. Low pressure system over the Atlantic shifts south while over the ocean waters south of Long Island winds gust could reach up to 40kts out of the north. As such a Gale Warning is in effect for the ocean east of Fire Island Inlet through at Friday night. Winds near the NYC harbor and over the Long Island sound should remain out of the north with gusts up to 30kts. A Small Craft Advisory is in effect until at least early Saturday morning.

Winds are expected to diminish Saturday, but seas over the ocean waters could remain elevated 7 to 9 feet through Saturday night. This means Small Craft Advisory conditions could remain in place over the ocean waters possibly through early Sunday morning. As the low continues to move into the central Atlantic seas subside below SCA criteria late Sunday. Winds will be lightly out of the south 5- 10kts for most of the day Sunday before shifting northwesterly 5- 10kt early Monday following a weak frontal passage.

HYDROLOGY. No hydrologic impacts are expected through next week.

TIDES/COASTAL FLOODING. High tide has passed along the south shore back bays early this morning. Tides have been running lower than guidance and benchmarks have not been reached. Will leave the coastal flood statement in place across the Western Sound, but its possible minor benchmarks are not reached.

A persistent gusty northerly wind, building seas/swell/and rising astronomical tide levels will likely result in a bit more widespread minor coastal flooding with this evenings high tide across the back bays of Long Island and along the Great South Bay in southern Suffolk. A coastal flood advisory has been issued here. A coastal flood statement has been issued for isolated minor coastal flooding across the Western Sound and along the Peconic and Gardiners Bays, specifically near Riverhead.

More widespread coastal flooding is likely Saturday morning with localized moderate flooding possible. Coastal flood advisories are likely more of the area. There may also be isolated minor coastal flooding during Saturday evenings high tide as well.

EQUIPMENT. NYC NOAA Weather Radio Station KWO35 (162.55 MHz) is undergoing its final stages of testing, and is operating at full power.

OKX WATCHES/WARNINGS/ADVISORIES. CT . None. NY . Coastal Flood Advisory from 3 PM this afternoon to 7 PM EDT this evening for NYZ179. Coastal Flood Advisory from 5 PM this afternoon to 9 PM EDT this evening for NYZ080. NJ . None. MARINE . Small Craft Advisory until 6 PM EDT this evening for ANZ335- 338. Small Craft Advisory until 6 AM EDT Saturday for ANZ330-340- 345-355. Gale Warning until 6 AM EDT Saturday for ANZ350-353.

SYNOPSIS . FEB/DS NEAR TERM . DS SHORT TERM . DS LONG TERM . FEB/DS AVIATION . DJ MARINE . DJ HYDROLOGY . DS TIDES/COASTAL FLOODING . EQUIPMENT .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NWHC3 - 8465705 - New Haven, CT 13 mi52 min N 8 G 18 43°F 45°F999.7 hPa
BRHC3 - 8467150 - Bridgeport, CT 28 mi52 min NNW 11 G 17 43°F 45°F1000.4 hPa
NLNC3 - 8461490 - New London, CT 31 mi52 min N 8.9 G 13 44°F 45°F997.7 hPa
LDLC3 - New London Ledge CT - Ledge Light Weather 32 mi45 min NNW 19 G 25 44°F 995.7 hPa38°F
MTKN6 - 8510560 - Montauk, NY 41 mi52 min 43°F 45°F997.9 hPa

Wind History for New Haven, CT
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
New Haven, Tweed-New Haven Airport, CT11 mi17 minNW 810.00 miOvercast44°F37°F79%1000.5 hPa
Chester, Chester Airport, CT12 mi15 minNNW 13 G 2010.00 miOvercast41°F39°F93%999.3 hPa
Meriden, Meriden Markham Municipal Airport, CT19 mi17 minNNW 7 G 1610.00 miOvercast42°F36°F79%1000.5 hPa

Link to 5 minute data for KHVN

Wind History from HVN (wind in knots)
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1 day agoN6N11N7NE10NE12
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N8N11N8NE10N5NW4NW4NW4NW6NW5NW8
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2 days agoN4N6N9NE9N6N4S8S8S7S9SW5S6SE4E6S8SE4SE5E4E5NE3NE4E4NE4N8

Tide / Current Tables for Guilford Harbor, Connecticut
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Branford, Branford River, Connecticut
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
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wmap_A
GEOS 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 (6,6,7,8)
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Ground Weather Radar Station Upton, NY
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