Sunday, September27, 2020
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Marine Weather and Tides
Wethersfield, CT

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 6:42AMSunset 6:40PM Sunday September 27, 2020 1:37 PM EDT (17:37 UTC) Moonrise 5:10PMMoonset 2:10AM Illumination 79% 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- 1231 Pm Edt Sun Sep 27 2020
This afternoon..SE winds 5 to 10 kt. Seas 1 ft or less. Chance of showers.
Tonight..SE winds 5 to 10 kt. Seas 1 to 2 ft. Chance of showers.
Mon..S winds 5 to 10 kt. Seas 1 to 2 ft. Chance of showers in the morning with vsby 1 to 3 nm.
Mon night..S winds 5 to 10 kt. Seas 1 to 2 ft.
Tue..S winds 5 to 10 kt. Seas 1 to 2 ft. Chance of showers.
Tue night..S winds 10 to 15 kt. Seas around 2 ft. Chance of showers in the evening, then showers likely after midnight.
Wed..SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely.
Wed night..SW winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely.
Thu..SW winds 10 to 15 kt. Seas 2 to 3 ft. Chance of showers.
Thu night..W winds 5 to 10 kt. Seas 2 to 3 ft. Chance of showers.
ANZ300 1231 Pm Edt Sun Sep 27 2020
Synopsis for the long island waters and new york harbor.. A weak area of low pressure off the mid atlantic drifts northward today. High pressure over the atlantic establishes the flow for the beginning of the week. A broad slow moving frontal system will then impact the area for the middle of next week.


7 Day Forecast for Marine Location Near Wethersfield, CT
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location: 41.71, -72.65     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 271422 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 1022 AM EDT Sun Sep 27 2020

SYNOPSIS. Fog and low clouds thin this afternoon leaving a mild humid afternoon. Weak low pressure area approaching tonight may trigger a few showers. Increasingly moist southerly flow out ahead of a cold front, bringing showers into Tuesday. The greatest chance of rain comes with a series of frontal systems Wednesday into Thursday. Temperatures will be near or slightly above normal until the front cools things down by late week.

NEAR TERM /UNTIL 6 PM THIS EVENING/.

Challenging forecast for a quiet weather day. Low level south flow and mid level west flow are moving clouds overhead. Broad areas of clear skies over the ocean. However, also signs of clouds reforming as the ocean air moves over land. So the remaining question is about how much clearing will take place this afternoon.

Cross-sections do show drying in the lowest couple-thousand feet of the atmosphere, but also lingering moisture between 925-mb and 850-mb. All of this moisture fills in again to the surface this evening.

This forecast will show sky cover diminishing to between 60 pct and 80 pct this afternoon . a partly to mostly cloudy range. Will monitor and update as needed. Temperatures at 925 mb are forecast at 17-18C, equiv to 9-10C if lifted to 850 mb. Temps at 900 mb equiv to 10-11C. Observed temps at 10 AM were upper 60s and low 70s. Put it together, and temps similar to Saturday are reasonable.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM MONDAY/. A combination of a weak surface low pressure and a mid level shortwave is expected to approach our region tonight into Monday. This may be enough lift to trigger scattered showers, which have been very tough to come by the last several days. The greatest risk will be towards Nantucket, which will be closest to the weak surface low pressure. Where it does rain, most locations should only receive less than one tenth inch. A few locations towards eastern RI and southeast MA could see locally higher amounts up to one quarter inch. Unfortunately, this will not be common.

With a mid level trough axis to our west through Monday, above normal temperatures continue, despite increased cloudiness.

LONG TERM /MONDAY NIGHT THROUGH SATURDAY/. Highlights .

* Warm temperatures continue Tuesday, the a cool down starts beginning Wednesday

* Moist, southerly flow continues Tuesday bringing scattered showers

* Frontal systems will bring more widespread rain Wednesday into Thursday along with some gusty winds.

Details .

Monday night and Tuesday .

Rain chances increasing with time during this period, so Monday night should be mostly dry while appreciable rain chances move in during the day on Tuesday. Looking aloft we see the weak shortwave lifting north of southern New England overnight which will allow for the break in more widespread rain chances. Plenty of cloud cover remains, however. Cooling overnight will be curtailed by continued moist southerly flow and dewpoints in the low 60s. Lows would normally be in the low 50s in late September.

By Tuesday the trough moves into the mid Atlantic while the cold front approaches from the west. This, together with a stronger 25-35 kt low level jet and PWATs near 2 inches will bring more widespread showers than we saw on Monday. The anomalously warm airmass sticks around too, with highs in the upper 70s.

Tuesday night through Thursday .

A more significant wet stretch of weather begins late Tuesday, lasting through Wednesday night or early Thursday. While the GFS briefly backed off of the secondary low moving up the coast late Wednesday night, latest 00Z guidance once again places it in good agreement with the ECMWF, which has shown this solution for several days now. The temporal consistency of the ECMWF as well as support from the ensembles would would lead me to hedge toward this outcome. That would lead us to have two somewhat distinct periods of heavier rainfall, first Tuesday night into Wednesday and then again Wednesday night into early Thursday. Timing of course is subject to change and guidance disagrees on how quickly the rain ends Thursday, but the general idea remains. The first round comes as the mid- Atlantic trough digs in and a sfc low lifts across New England bringing with it strong jet dynamics. Then, a low over the southeast U.S. moves up the east coast and strengthens on approach bringing more heavy rain and potential for strong winds late Wed into Thursday. Rainfall amounts could be up to a localized few inches, but where that heaviest swath of rain falls is unknown at this time. Ensemble guidance suggests a good chance of widespread rainfall totals over a half inch. Anything would be beneficial for our drought stricken region.

Friday and Saturday .

A good deal of uncertainty with the specifics of the far extended forecast . much will hinge on how the mid week system plays out. Generally, though, much drier and cooler air filters in behind Thursday's system bringing temperatures back below normal. Highs return to the 60s with lows back in the 40s.

AVIATION /13Z SUNDAY THROUGH THURSDAY/. Forecaster Confidence Levels .

Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent.

12Z update .

This afternoon . Moderate confidence.

Slow improvement to VFR and patchy MVFR this afternoon. With weak surface airflow, expect continued sea breezes along the east MA coast.

Tonight . Moderate confidence.

MVFR to IFR ceilings anticipated as showers move up from the Mid Atlantic states. Scattered -SHRA. Could see brief reductions to MVFR visibility if any heavier showers move through.

Monday . Moderate confidence.

MVFR/IFR to start, improving to VFR during the afternoon. Scattered -SHRA.

KBOS Terminal . High confidence in TAF trends. Moderate confidence in timing.

KBDL Terminal . High confidence in TAF trends. Moderate confidence in timing. Outlook /Monday Night through Thursday/ .

Monday Night: VFR. Slight chance SHRA.

Tuesday: Mainly VFR, with local IFR possible. Breezy. Chance SHRA.

Tuesday Night: Mainly VFR, with areas IFR possible. Breezy. SHRA likely.

Wednesday: Mainly VFR, with local IFR possible. Breezy. SHRA likely.

Wednesday Night: Mainly VFR, with local MVFR possible. Breezy. SHRA likely.

Thursday: VFR. Breezy. Chance SHRA.

MARINE. Light winds and seas continue this afternoon due to circulation around high pressure centered near Bermuda.

A disturbance moving up from the Mid Atlantic coast will bring a chance of showers tonight into Monday. Expect increasing south winds and building seas. Issued a Small Craft Advisory for some of the southern coastal waters due to marginal rough seas. Gusts up to 20 kt.

Outlook /Monday Night through Thursday/ .

Monday Night: Winds less than 25 kt. Seas up to 5 ft. Slight chance of rain showers.

Tuesday through Tuesday Night: Winds less than 25 kt. Seas up to 5 ft. Chance of rain showers.

Wednesday: Moderate risk for Small Craft Advisory winds with gusts up to 25 kt. Rough seas up to 8 ft. Rain showers likely.

Wednesday Night: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Rough seas up to 9 ft. Rain showers likely.

Thursday: Moderate risk for Small Craft Advisory winds with gusts up to 25 kt. Rough seas up to 10 ft. Chance of rain showers.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . None. RI . None. MARINE . Small Craft Advisory from 8 PM this evening to 9 PM EDT Monday for ANZ254>256. Small Craft Advisory from 2 AM to 7 AM EDT Monday for ANZ235.

SYNOPSIS . Belk/BW NEAR TERM . WTB/Belk/BW SHORT TERM . Belk LONG TERM . BW AVIATION . WTB/Belk/BW MARINE . WTB/Belk/BW


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NWHC3 - 8465705 - New Haven, CT 33 mi50 min SW 1.9 G 2.9 71°F 67°F1016.9 hPa
NLNC3 - 8461490 - New London, CT 38 mi50 min S 6 G 8 69°F 67°F1016.3 hPa
LDLC3 - New London Ledge CT - Ledge Light Weather 41 mi43 min SE 5.1 G 6 68°F 1018.2 hPa67°F
BRHC3 - 8467150 - Bridgeport, CT 47 mi50 min S 2.9 G 6 73°F 69°F1015.5 hPa

Wind History for New Haven, CT
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hartford, Hartford-Brainard Airport, CT1 mi45 minN 010.00 miOvercast75°F64°F71%1015.9 hPa
Windsor Locks, Bradley International Airport, CT16 mi47 minS 710.00 miOvercast75°F64°F71%1015.8 hPa
Meriden, Meriden Markham Municipal Airport, CT17 mi45 minS 710.00 miOvercast76°F63°F64%1015.9 hPa
Chester, Chester Airport, CT24 mi83 minSSE 49.00 miPartly Cloudy73°F68°F83%1016.9 hPa

Link to 5 minute data for KHFD

Wind History from HFD (wind in knots)
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Last 24hrS9SE8SE8SE7S7SE3S5S3SE3SE4CalmS3S3CalmCalmS3CalmCalmCalmCalmCalmCalmSW5Calm
1 day agoE4E3S9S9S9S6S5S5S4S5S5CalmCalmSE4SE3CalmCalmCalmCalmS5S6S54S5
2 days agoSW84W5W6SW4SW4S4S4S4S3CalmS3S3CalmCalmCalmCalmCalmCalmCalmCalmNE4SE5S4

Tide / Current Tables for Rocky Hill, Connecticut
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Rocky Hill
Click for Map
Sun -- 02:10 AM EDT     Moonset
Sun -- 06:42 AM EDT     0.31 feet Low Tide
Sun -- 06:43 AM EDT     Sunrise
Sun -- 11:57 AM EDT     2.00 feet High Tide
Sun -- 05:09 PM EDT     Moonrise
Sun -- 06:38 PM EDT     Sunset
Sun -- 06:55 PM EDT     0.42 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.32.11.91.61.10.70.40.30.611.51.921.91.81.61.20.80.50.40.71.11.62.1

Tide / Current Tables for Portland, Connecticut
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Portland
Click for Map
Sun -- 02:11 AM EDT     Moonset
Sun -- 05:26 AM EDT     0.33 feet Low Tide
Sun -- 06:43 AM EDT     Sunrise
Sun -- 11:04 AM EDT     2.18 feet High Tide
Sun -- 05:09 PM EDT     Moonrise
Sun -- 05:39 PM EDT     0.45 feet Low Tide
Sun -- 06:38 PM EDT     Sunset
Sun -- 11:20 PM EDT     2.52 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.32.11.71.20.70.40.40.71.21.622.22.11.91.71.30.80.50.50.81.31.82.22.5

Weather Map
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wmap_A
GEOS Local Image of    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
Ground Weather Radar Station Upton, NY
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