Sunday, December8, 2019
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Marine Weather and Tides
Windsor Locks, CT

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:03AMSunset 4:21PM Sunday December 8, 2019 3:04 AM EST (08:04 UTC) Moonrise 3:31PMMoonset 4:08AM Illumination 87% Phase: Waxing Gibbous; Moon at 11 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- 950 Pm Est Sat Dec 7 2019
Tonight..N 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..E winds around 5 kt, becoming S 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 1 ft or less.
Sun night..SW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Chance of rain.
Mon..S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 2 to 4 ft. Rain. Vsby 1 to 3 nm.
Mon night..SW winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to 4 ft. Rain, mainly in the evening with vsby 1 to 3 nm.
Tue..SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Rain.
Tue night..NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Rain. Vsby 1 to 3 nm after midnight.
Wed..NW winds 10 to 15 kt. Seas 2 to 3 ft. Rain likely with chance of snow in the morning. Vsby 1 to 3 nm.
Wed night..NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 3 ft.
Thu..NW winds 10 to 15 kt. Seas 2 to 3 ft.
Thu night..N winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft in the evening, then 1 ft or less.
ANZ300 950 Pm Est Sat Dec 7 2019
Synopsis for the long island waters and new york harbor.. High pressure will settle over the area tonight, then pass east on Sunday. A warm front will approach on Monday and lift north Monday night. A cold front will approach on Tuesday and pass east Tuesday night into Wednesday. Arctic high pressure will then follow later in the week.


7 Day Forecast for Marine Location Near Windsor Locks, CT
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location: 41.92, -72.63     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 080756 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 256 AM EST Sun Dec 8 2019

SYNOPSIS. Cold high pressure moving across southern New England was resulting in a frigid night. The high moves offshore Sunday, starting a return flow of milder and moist air for the first half of the week. This will bring off and on rain from late Sunday night into Monday and Tuesday. Very strong wind gusts are possible late Monday and Monday night in southeast areas. A cold front moves through Tuesday night, and there might be some snow Tuesday night into Wednesday although confidence is very low at this point. Dry weather returns late Wednesday with colder temperatures for Thursday. Another coastal weather system may bring a mix of precipitation Friday or Saturday.

NEAR TERM /UNTIL 6 AM THIS MORNING/. 115 AM Update:

Forecast on track for the overnight hours. Clear skies and frigid temperatures. Already down to 1 degree above zero at Orange, MA and 5 degrees at Chicopee, MA. It was 3 below zero up in Jaffrey, NH!

SHORT TERM /6 AM THIS MORNING THROUGH 6 PM MONDAY/. 320 PM update .

Sunday .

Deep layer ridge moves across the area during the morning. Thus dry weather prevails along with abundant sunshine. However it will be a very cold start to the day. Not much of a temp recovery as 1030+ mb high over southeast MA limits boundary layer mixing given subsidence inversion. So temps only 3-5 degs higher tomorrow with highs in the mid to upper 30s, low 30s high terrain. Winds become SSW during the afternoon, fairly light but will increase late in the day especially from Cape Ann to Cape Cod in eastern MA.

Sunday night .

Enough deep layer ridging nearby to support dry weather thru the evening. However increasing return SW flow aloft will result in the risk for showers late Sunday night and especially toward Monday morning on nose of approaching low level jet. Given this low level WAA pattern temps will actually rise overnight thru the 30s and into the low 40s along the south coast toward Monday morning.

LONG TERM /MONDAY NIGHT THROUGH SATURDAY/.

Big Picture .

Broad upper trough digs over the Plains and Great Lakes Monday night and Tuesday while an upper ridge sits over the Western Atlantic. This creates a southwest flow aloft across the Eastern USA and brings milder air into Southern New England. The upper trough moves east midweek, crossing New England Thursday. Less agreement on the pattern for Friday-Saturday, but possibly a trough digs over the Plains, then sweeps east to New England over next weekend.

Above normal 500-mb heights Tuesday fall below normal Thursday- Friday before increasing again on Saturday. So the deep layer is expected to be mild Tuesday, then falling below normal late week with signs of a recovery by Saturday.

Mass fields and thermal fields in the models are similar through midweek but then show some model-to-model differences late in the week. This means moderate confidence through Tuesday, then diminishing to low confidence by Friday and Saturday.

Daily Concerns .

Monday night-Tuesday .

Two features of note Monday night. One is a strong southerly low- level jet moving up the coast over Southern New England. This provides an inflow of moisture with PW values between 1 and 1.25 inches as well as low level forcing and lift. The second is a strong 150-kt upper jet moving east from the Plains and eventually curving up over Southern New England. The left exit region of this jet moves over us Monday evening and night, also generating lift. Temperatures will be above freezing through the lowest 10 thousand feet, so high confidence the precip type will be rain/showers.

Low level south to southwest winds reach 60 kt within a couple of thousand feet of the surface, with highest values just offshore. Lapse rates will be near moist adiabatic in a shower-filled warm sector. Expect strong wind gusts to be brought to the surface, with gusts of 35 to 45 kt. Values similar to this are forecast at 1000 mb. Thus expect strong gusty winds Monday night and Tuesday.

Guidance also suggests the precipitation comes in two segments: one Monday night followed by a break Tuesday morning and then a second segment of rain/showers late Tuesday and Tuesday night. Total rainfall during this time will be roughly 1 to 2 inches.

Temperatures in the warm sector are indicated by 12C temps at 950 mb. If we have a lapse rate close to isothermal at night, expect nightime min temps in the lows to mid 50s. A similar temperature aloft with a dry adiabatic lapse to the surface would suggest max temps around 60 during the day Tuesday. Will show upper 50s and around 60 in the coastal plain, and mid 50s in Western/Central MA

Tuesday night .

Cold front sweeps through Southern New England Tuesday evening and early night. After it moves through, indications are that it turns parallel to the upper flow just as we move under the right entrance region of the upper jet. This should keep the front nearby overnight and maintain support for precipitation much of the night. With colder air moving in aloft, this may mean a changeover to snow with potential of a couple of inches. Cross sections show the deep column of moisture dries out by 12Z Wednesday, suggesting a diminishing chance of snow by sunrise.

Wednesday-Thursday .

Upper trough and associated cold pool move across New England on Wednesday. This should push any lingering precipitation offshore. Cold pool instability may generate some clouds and scattered rain/snow showers during Wednesday, with best potential in Western and Central MA and areas north of the MA border.

High pressure then builds in with cold and dry weather Thursday.

Friday-Saturday .

GFS shows another coastal system moving up from the south Friday, spreading precipitation into Southern New England with continues into Saturday. The ECMWF is slower with the coastal system, moving precipitation ashore on Saturday. GFS temperatures are borderline, with potential for both rain and snow. The ECMWF temperature show predominently rain. Expect a mix of precipitation on one or both of the days, but with low confidence.

AVIATION /08Z SUNDAY THROUGH THURSDAY/. Forecaster Confidence Levels .

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

Short Term /through Monday/ . High confidence.

0615Z Update:

Overnight . VFR clear.

Sunday . VFR. Light SW winds slowly increasing to 10-15 kt later in the day.

Sunday night . VFR to start becoming lowering to MVFR in scattered showers after midnight. LLWS possible late.

KBOS Terminal . High confidence in TAF.

KBDL Terminal . High confidence in TAF.

Outlook /Monday Night through Thursday/ .

Monday Night: MVFR/IFR conditions possible. Strong winds with local gusts up to 40 kt. RA.

Tuesday: Mainly MVFR, with local VFR possible. Windy with gusts up to 35 kt. SHRA likely.

Tuesday Night: MVFR/IFR conditions possible. Breezy. Chance SHRA, chance SHSN.

Wednesday: Mainly VFR, with areas IFR possible in the morning. Breezy. Chance SHSN, chance SHRA.

Wednesday Night through Thursday: VFR. Breezy.

MARINE. Short Term /through Monday/ . High confidence.

115 AM Update:

Have issued Small Craft Advisories for 5 ft seas that are expected on the outer waters tonight. Have issued a Gale Watch for all coastal waters from Monday afternoon through Monday night. More on that to follow in the next discussion at 4 AM.

Overnight . NW winds 10-15 kts.

Sunday . 1030+ mb high pressure overhead during the morning drifts offshore in the afternoon shifting winds from light/variable to SSW over southern New England in the afternoon. Dry weather and good vsby continue.

Sunday night . high pressure offshore with SSW winds increasing to near 25 kt especially eastern MA waters. Dry weather and good vsby in the evening but showers likely develop late and especially toward Monday morning lowering vsby.

Outlook /Monday Night through Thursday/ .

Monday Night: Moderate risk for gale force winds with gusts up to 40 kt. Rough seas up to 14 ft. Rain. Local visibility 1 to 3 nm.

Tuesday: Moderate risk for gale force winds with gusts up to 35 kt. Rough seas up to 14 ft. Chance of rain showers.

Tuesday Night: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Rough seas up to 11 ft. Rain showers likely.

Wednesday: Moderate risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of rough seas. Chance of rain showers, chance of snow showers. Local visibility 1 to 3 nm.

Wednesday Night: Moderate risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of rough seas. Slight chance of snow showers. Local visibility 1 to 3 nm.

Thursday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Local rough seas.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . None. RI . None. MARINE . Gale Watch from Monday afternoon through late Monday night for ANZ231>235-237-250-251-254>256. Gale Watch from Monday afternoon through late Monday night for ANZ230-236. Small Craft Advisory from 9 PM this evening to 1 PM EST Monday for ANZ250. Small Craft Advisory from 11 PM this evening to 1 PM EST Monday for ANZ254>256.

SYNOPSIS . WTB/Nocera/GAF NEAR TERM . Nocera/Loconto/GAF SHORT TERM . Nocera LONG TERM . WTB AVIATION . WTB/Nocera/GAF MARINE . WTB/Nocera/GAF


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NWHC3 - 8465705 - New Haven, CT 46 mi65 min NW 2.9 G 4.1 26°F 41°F1033.2 hPa (+0.7)
NLNC3 - 8461490 - New London, CT 48 mi65 min N 2.9 G 4.1 24°F 49°F1033.2 hPa (+0.7)
LDLC3 - New London Ledge CT - Ledge Light Weather 52 mi50 min Calm G 1 26°F 1021.5 hPa14°F

Wind History for New Haven, CT
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Windsor Locks, Bradley International Airport, CT3 mi74 minN 010.00 miFair18°F8°F65%1032.9 hPa
Hartford, Hartford-Brainard Airport, CT13 mi72 minN 010.00 miFair22°F12°F66%1033.3 hPa
Westfield, Barnes Municipal Airport, MA17 mi72 minN 010.00 miFair6°F1°F83%1033.5 hPa
Chicopee Falls / Westover Air Force Base, MA21 mi69 minN 010.00 miFair2°F-2°F82%1033.2 hPa

Link to 5 minute data for KBDL

Wind History from BDL (wind in knots)
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1 day agoSW5SW3W3SE4S7S5SW7S6S10S10S8S8CalmSW5SW6SW6SW6NW13
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2 days agoCalmSE3SE5SE3CalmW6W12NW21
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Tide / Current Tables for Hartford, Connecticut
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Hartford
Click for Map
Sun -- 03:08 AM EST     Moonset
Sun -- 07:05 AM EST     Sunrise
Sun -- 07:12 AM EST     0.23 feet Low Tide
Sun -- 11:55 AM EST     2.08 feet High Tide
Sun -- 02:30 PM EST     Moonrise
Sun -- 04:19 PM EST     Sunset
Sun -- 07:52 PM EST     0.16 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.61.51.31.10.90.60.40.20.40.91.51.92.121.81.51.20.90.50.20.20.511.4

Tide / Current Tables for Rocky Hill, Connecticut
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Rocky Hill
Click for Map
Sun -- 03:07 AM EST     Moonset
Sun -- 06:04 AM EST     0.25 feet Low Tide
Sun -- 07:04 AM EST     Sunrise
Sun -- 11:09 AM EST     2.19 feet High Tide
Sun -- 02:30 PM EST     Moonrise
Sun -- 04:20 PM EST     Sunset
Sun -- 06:44 PM EST     0.17 feet Low Tide
Sun -- 11:30 PM EST     1.78 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.61.41.210.70.40.30.511.522.22.11.91.61.30.90.50.20.20.511.51.7

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Boston, MA (3,6,7,8)
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Ground Weather Radar Station Boston, MA
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