Friday, April10, 2020
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Marine Weather and Tides
Springfield, MA

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 6:14AMSunset 7:27PM Friday April 10, 2020 2:02 AM EDT (06:02 UTC) Moonrise 10:51PMMoonset 8:05AM Illumination 94% Phase: Waning Gibbous; Moon at 17 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- 1254 Am Edt Fri Apr 10 2020
.gale warning in effect through this afternoon...
Overnight..W winds 15 to 20 kt, increasing to 20 to 25 kt late. Gusts up to 35 kt. Seas 3 to 5 ft. Slight chance of showers.
Fri..W winds 25 to 30 kt with gusts up to 40 kt. Seas 4 to 6 ft.
Fri night..W winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 35 kt. Seas 3 to 5 ft.
Sat..W winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 2 to 4 ft.
Sat night..NW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas around 2 ft in the evening, then 1 ft or less.
Sun..S winds 5 to 10 kt. Seas 1 ft or less.
Sun night..S winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 1 ft or less, then 2 to 3 ft after midnight. Chance of rain in the evening, then rain after midnight with vsby 1 to 3 nm.
Mon..S winds 20 to 25 kt. Seas 2 to 4 ft. Rain, mainly in the morning. Vsby 1 to 3 nm.
Mon night..SW winds 15 to 20 kt. Seas 2 to 4 ft. Chance of rain.
Tue..W winds 10 to 15 kt. Seas 2 to 3 ft. Chance of showers in the afternoon.
Tue night..W winds 10 to 15 kt. Seas around 2 ft in the evening. Chance of showers in the evening.
ANZ300 1254 Am Edt Fri Apr 10 2020
Synopsis for the long island waters and new york harbor.. Low pressure will track up into the canadian maritimes into Friday, while high pressure over the mid section of the country builds east. The high moves across the waters Saturday night into Sunday morning. A complex low pressure system will approach Sunday night and move across on Monday.


7 Day Forecast for Marine Location Near Springfield, MA
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location: 42.13, -72.51     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 100159 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 959 PM EDT Thu Apr 9 2020

SYNOPSIS. Low pressure east of Massachusetts will move through the Gulf of Maine tonight. Strong gusty west winds will bring in cooler and drier air tonight. Friday will be cooler along with a few light showers as the strong low pressure exits Maine into the Maritimes. High pressure brings drier weather for the weekend. The next weather system brings wind and rain Sunday night and Monday. The weather then dries out again for much of next midweek.

NEAR TERM /UNTIL 6 AM FRIDAY MORNING/.

10 pm update . no changes to previous forecast. Earlier discussion below.

==============================================================

Low pressure was located east of the Merrimack River at 7 PM with strongest pressure falls over the Gulf of Maine. Expect the low to move northeast across the gulf, eventually reaching the Maritimes. Strong pressure gradient moving into Western MA/CT will provide for strong west winds. BOX VAD Wind Profile shows 35 kt winds at 2000 feet AGL and Albany VAD Wind Profile shows 40 kt winds at 3000-4000 feet. Expect gusts in this range for at least the first part of the night, diminishing a little overnight as the pressure gradient weakens.

Satellite images show clearing skies over CT/RI and Western MA. This clearing is trending northeast and will sweep out of Central and Eastern MA early tonight.

No significant changes to the forecast planned. A Wind Advisory continues due to the observed gusts at 7 PM and observed low- level winds aloft from the regional radars.

SHORT TERM /6 AM FRIDAY MORNING THROUGH 6 PM FRIDAY/.

Friday .

Some locales will have sunshine to start the day, but increasing clouds is expected during the morning as wrap around moisture behind the surface low moves into our area, and mid level trough axis sweeps through southern New England as well. The cyclonic flow aloft and very cold temps aloft will yield lots of diurnal clouds and a few scattered showers (snow showers high terrain possible) as well. Not a wash out but will have to dodge a few showers especially across northern MA. Otherwise mainly dry and cool with highs 45-50 but it will feel cooler given a gusty west wind up to 30-40 mph. There is a chance that we could have higher gusts, but not enough confidence at this time for Wind Advisory headlines.

LONG TERM /FRIDAY NIGHT THROUGH THURSDAY/. Big Picture .

Closed low moves off through the Maritimes Friday night and Saturday. West Atlantic ridge builds over the Eastern Seaboard this weekend, then moves out to sea Sunday night. Southern stream jet then takes over and pulls a closed low from the Desert Southwest. this energy from this low generates a surface low over the Southern High Plains and pushes it northeast up the Ohio Valley and through the Great Lakes Monday. Broad upper trough remains over the USA through much of next week.

Mass fields are similar through Monday. The broad pattern remains similar through the week while the general details diverge. Moderate to high confidence in the forecast, with highest confidence over the weekend.

Daily Concerns .

Friday night .

West-northwest low level winds begin to diminish, but with 30 to 35 kt wind speeds at 925 mb which might still gust to the surface early in the night. Expect further diminishing during the night.

Upper trough lifts through the Maritimes. A shortwave moves through the trailing side of the trough and crosses Srn New England Friday night. The cold pool associated with the shortwave reaches -34C. Cross sections show lingering moisture between 800 and 900 mb, but with dry air underneath. This suggests lingering clouds over northern MA and the Berkshire East Slopes, diminishing during the day Saturday.

Saturday and Sunday .

High pressure builds overhead Saturday and moves off to the east Sunday. Increasing moisture above 850 mb Sunday suggests increasing sky cover through the day but no precip. West-northwest winds in the mixed layer Saturday reach 25-30 kt. Mixing reaches to at least 850 mb, possibly close to 800 mb thanks to the cold air aloft. Temperatures -4C to -6C support max sfc temps upper 40s to low 50s.

Ridge moves east by Sunday, with surface winds picking up from the south. Expect increasing moisture aloft, bringing increasing clouds and limiting mixing depth. Forecast temps of 8-10C at 925 mb suggest max temps near 60.

Sunday night and Monday .

Upper high to our east brings a southwest flow aloft over the USA East Coast. This draws surface low pressure up the Ohio Valley and over the Great Lakes. Upper jet pattern over New England is mediocre for generating lift, but the low level flow shows a 70 to 85 kt low level south jet. This should be enough to generate lift during the late night and on Monday. PW values rise quickly to 1.3 inches, which by climatology is high-end for the date. Expect strong south winds and showers with local downpours. Low pressure swings a cold front through Southern New England Monday night, with winds shifting out of the west and diminishing overnight.

Tuesday through Thursday .

Low pressure exits through northern Quebec Tuesday morning. West winds and drier air then take over. There are signs of an offshore low passing south of New England Wednesday. Given the position of the upper jet at that time, expect the low to remain too far offshore to bring precipitation to the region. The forecast is for dry weather much of next midweek.

AVIATION /02Z FRIDAY THROUGH TUESDAY/. Forecaster Confidence Levels .

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

02z update . no changes from previous forecast. Earlier discussion below.

============================================================

Tonight . Lingering MVFR cigs over central and northeast MA early, but the trend from satellite images shows clearing skies in CT/RI/Western MA moving into the remainder of MA. the forecast will show a trend to VFR clearing all areas.

Strong west winds and gusts as drier air moves in. Expect west gusts of 35-40 kt early, diminishing to around 30 kt overnight.

Friday .

VFR at sunrise but then trending to marginal MVFR/VFR toward 15z followed by isolated afternoon showers. Gusty west winds 15-20G35kt.

KBOS Terminal . Moderate confidence in the TAF through 00Z, then high confidence.

KBDL Terminal . Moderate confidence in the TAF through 23Z, then high confidence.

Outlook /Friday Night through Tuesday/ .

Friday Night: VFR. Windy with gusts up to 35 kt.

Saturday: VFR. Windy with local gusts up to 30 kt.

Saturday Night through Sunday: VFR. Breezy.

Sunday Night: Mainly VFR, with areas MVFR possible overnight. Windy with areas of gusts up to 35 kt. Chance SHRA.

Monday: Mainly MVFR, with local IFR possible. Strong winds with local gusts up to 40 kt. SHRA likely.

Monday Night: Mainly VFR, with local MVFR possible. Windy with gusts up to 35 kt. Chance SHRA.

Tuesday: VFR. Windy with local gusts up to 30 kt.

MARINE. Tonight .

West winds and gusts to 40 to 45 kt as low pressure moves off toward the Maritimes. Winds may diminish a little overnight. Drier air will bring clearing skies. Seas linger at 5 to 10 feet.

Friday .

Low pressure over the Maritimes will bring west gales over the waters. Seas build to 5 to 12 feet. Winds will diminish toward evening.

Outlook /Friday Night through Tuesday/ .

Friday Night: Low risk for gale force winds with gusts up to 35 kt. Seas 5 to 10 feet, subsiding overnight.

Saturday: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Local rough seas.

Saturday Night: Winds less than 25 kt. Seas locally approaching 5 ft.

Sunday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Seas locally approaching 5 ft.

Sunday Night: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Local rough seas. Chance of rain showers, mainly after midnight.

Monday: Moderate risk for gale force winds with gusts up to 40 kt. Rough seas up to 18 ft. Rain showers likely.

Monday Night: Low risk for gale force winds with gusts up to 40 kt. Rough seas up to 18 ft. Chance of rain showers.

Tuesday: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Rough seas up to 12 ft.

TIDES/COASTAL FLOODING.

430 PM Update:

Another round of minor coastal flooding this evening/overnight high tide, given continued high astronomical tides. Coastal Flood Advisories remain in effect for the southern and eastern coasts into Friday morning.

BOX WATCHES/WARNINGS/ADVISORIES. CT . Wind Advisory until 10 PM EDT this evening for CTZ002>004. MA . Wind Advisory until 10 PM EDT this evening for MAZ002>024-026. Coastal Flood Advisory until 8 AM EDT Friday for MAZ007-015- 016-019-022. RI . Wind Advisory until 10 PM EDT this evening for RIZ001>004- 006>008. Coastal Flood Advisory until 8 AM EDT Friday for RIZ002- 004>007. MARINE . Gale Warning until 8 PM EDT Friday for ANZ231-232-251. Gale Warning until 3 AM EDT Saturday for ANZ233>235-237-250- 254>256. Gale Warning until 2 PM EDT Friday for ANZ230. Gale Warning until 1 AM EDT Friday for ANZ236.

SYNOPSIS . WTB/NMB NEAR TERM . WTB/Nocera/NMB SHORT TERM . NMB LONG TERM . WTB AVIATION . WTB/Nocera/NMB MARINE . WTB TIDES/COASTAL FLOODING .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NLNC3 - 8461490 - New London, CT 58 mi45 min W 4.1 G 8.9 42°F 46°F990.7 hPa
LDLC3 - New London Ledge CT - Ledge Light Weather 61 mi38 min W 14 G 16 44°F 988.8 hPa29°F
NWHC3 - 8465705 - New Haven, CT 62 mi45 min WNW 11 G 13 44°F 47°F990.9 hPa

Wind History for New London, CT
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chicopee Falls / Westover Air Force Base, MA6 mi67 minNW 17 G 2110.00 miFair40°F21°F48%990.5 hPa
Westfield, Barnes Municipal Airport, MA11 mi70 minW 17 G 2410.00 miFair41°F21°F47%990.4 hPa
Windsor Locks, Bradley International Airport, CT16 mi72 minW 13 G 2210.00 miFair42°F23°F47%990.7 hPa

Link to 5 minute data for KCEF

Wind History from CEF (wind in knots)
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Last 24hrCalmS4S4SE5S11S7S9S9S10SE7S11S10
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1 day agoCalmE3NE5N7NE3N4NE6N4N5NE5N5NW3CalmNW6W6W5CalmS3S3W6CalmCalmS3Calm
2 days agoCalmW4W5NW8W5W6W7W8SW7NW9
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--NW10W13W14NW7N3NW4S4S7S3Calm

Tide / Current Tables for Hartford, Connecticut
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Hartford
Click for Map
Fri -- 12:18 AM EDT     -0.20 feet Low Tide
Fri -- 04:57 AM EDT     2.71 feet High Tide
Fri -- 06:17 AM EDT     Sunrise
Fri -- 08:06 AM EDT     Moonset
Fri -- 01:01 PM EDT     -0.39 feet Low Tide
Fri -- 05:31 PM EDT     2.13 feet High Tide
Fri -- 07:26 PM EDT     Sunset
Fri -- 10:51 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.2-00.81.72.42.72.62.21.71.20.60.1-0.2-0.4-00.81.62.12.11.91.51.10.70.4

Tide / Current Tables for Rocky Hill, Connecticut
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Rocky Hill
Click for Map
Fri -- 04:11 AM EDT     2.85 feet High Tide
Fri -- 06:17 AM EDT     Sunrise
Fri -- 08:06 AM EDT     Moonset
Fri -- 11:53 AM EDT     -0.42 feet Low Tide
Fri -- 04:45 PM EDT     2.25 feet High Tide
Fri -- 07:26 PM EDT     Sunset
Fri -- 10:50 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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00.81.82.52.82.82.41.81.20.70.1-0.3-0.4-00.81.62.12.22.11.71.20.80.40

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
Wind Forecast for Boston, MA (2,6,7,8)
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Ground Weather Radar Station Boston, MA
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.