Thursday, October22, 2020
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Marine Weather and Tides
Springfield, MA

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 7:10AMSunset 5:58PM Thursday October 22, 2020 10:28 PM EDT (02:28 UTC) Moonrise 1:49PMMoonset 10:56PM Illumination 37% Phase: Waxing Crescent; Moon at 6 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- 824 Pm Edt Thu Oct 22 2020
.dense fog advisory in effect until 10 am edt Friday...
Tonight..SE winds around 5 kt, becoming E late. Seas 1 ft or less. Patchy fog early this evening, then areas of fog late this evening and overnight. Areas of drizzle late this evening and overnight. Vsby less than 1 nm.
Fri..E winds 5 to 10 kt. Seas 1 ft or less. Areas of drizzle in the morning. Areas of fog in the morning. Chance of sprinkles. Vsby less than 1 nm in the morning.
Fri night..S winds around 5 kt. Seas 1 ft or less. Patchy drizzle. Patchy fog. Vsby 1 to 3 nm.
Sat..SW winds 5 to 10 kt, becoming W in the afternoon. Seas 2 to 4 ft. Patchy drizzle in the morning. Patchy fog in the morning with vsby 1 to 3 nm.
Sat night..N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Sun..N winds 10 to 15 kt with gusts up to 20 kt, becoming ne 5 to 10 kt in the afternoon. Seas 2 to 3 ft.
Sun night..E winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas around 2 ft.
Mon..SE winds 10 to 15 kt. Seas around 2 ft. Chance of rain.
Mon night..SW winds around 10 kt. Seas around 2 ft. Chance of showers.
Tue..NW winds 5 to 10 kt, becoming N in the afternoon. Seas around 2 ft. Chance of showers.
Tue night..NE winds 5 to 10 kt, becoming se after midnight. Seas 1 ft or less, then around 2 ft after midnight. Chance of showers.
ANZ300 824 Pm Edt Thu Oct 22 2020
Synopsis for the long island waters and new york harbor.. High pressure along the new england coast will extend across the waters through Friday, before retreating Friday night. A cold front will then move through on Saturday, followed by high pressure building to the north Saturday night through Sunday. A frontal system will then impact the area through the middle of next week. Long period swells from hurricane epsilon will will continue into the weekend. Please refer to national hurricane center products for further details on epsilon.


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 222358 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 758 PM EDT Thu Oct 22 2020

SYNOPSIS. Weak high provides cooler weather tonight and Friday, however still above normal for late October. Dry weather prevails Friday but patchy fog and drizzle may impact the region tonight. Mild weather continues Saturday ahead of an approaching cold front, which will cross the region later Saturday followed by much cooler weather for Sunday. An unsettled weather pattern develops early next week as a series of fronts move across the region. This will bring the chance of showers at times Monday into Wednesday with perhaps the greatest risk for a period of steady rain late Tuesday night into Wednesday.

NEAR TERM /UNTIL 6 AM FRIDAY MORNING/.

745 PM Update .

* Areas of locally dense fog to develop overnight. The areal extent will be monitored closely.

Previous forecast remains largely on track. Did bring up the dew points by a couple of degrees based on obs. Parts of Eastern MA and Southern RI are experiencing locally dense fog, with vsby down to one-half mile at times so have gone ahead and put out a Special Weather Statement for locally dense fog. A quiet night of weather except for development of locally dense fog. There are some questions how widespread the dense fog will be. With light winds and dew points of low 60s being advected northwards, dew point depressions are expected to fall to near zero and that would argue for development of widespread dense fog. Also, the fog bank over Eastern MA is expected to advect westward, albeit subject to upslope effect. Somewhat drier air (dew pt in the mid 50s will also advect westward overnight thanks to a back door cold front, so areas of dense fog development may ultimately be limited to Worcester point west. Later shifts will continue to monitor the fog situation but if out and about tonight, be sure to slow down if encountering areas of locally dense fog.

PREVIOUS DISCUSSION .

415 PM Update .

Most of the region is enjoying beautiful late Oct weather at 4 pm with temps in the 70s and at least partial sunshine. However across coastal eastern MA, northeast flow associated with a backdoor cold front has advected a fog bank into this region. For example, at Logan airport, temp is down to 58 degs in 1/2 mile dense fog! This fog bank will continue advancing westward but the leading edge will likely erode as it traverses the warm land. However with sunset as the boundary layer cools, expecting this low level moisture to eventually overspread the entire region from east to west. The more difficult question is the duration, as dry air aloft is descending to the surface behind this fog bank over the Gulf of Maine. So overnight and especially toward Fri morning, clearing will occur from east to west. Until then, much of the model guidance suggesting spotty light rain/drizzle for a time overnight as this low level moisture moves across the area. This seems reasonable especially across the upslope regions of the Worcester Hills and the Berks.

Given the NE flow cooler tonight than last night, but still above normal for late Oct with lows only in the 50s. Avg low is in the 40s.

SHORT TERM /6 AM FRIDAY MORNING THROUGH FRIDAY NIGHT/. 415 pm update .

Friday .

Low clouds, spotty light rain/drizzle possible especially across CT into western-central MA trapped beneath subsidence inversion. Although low clouds will slowly lift along with clearing approaching from the east in response to drier air eastward well behind backdoor front. Thus expecting at least partial afternoon sunshine with more clouds inland. Not as warm as today given change in airmass with 1030 mb high over the maritimes. Highs in the 60s, more seasonable for this time of year. It will be pleasant given light winds

Friday night .

Ridge of high pressure holds on so quiet weather prevails. Low clouds may redevelop but with high pressure weakening, subsidence inversion likely also weakens, thus less of a trapping mechanism for low level moisture. Mostly clear conditions, at least initially combined with light winds and relatively dry airmass will promote temps to fall into the upper 40s and low 50s.

LONG TERM /SATURDAY THROUGH THURSDAY/. 415 pm update .

Highlights .

* Mostly dry and quite mild on Saturday

* Dry and becoming much cooler Saturday night & Sunday

* Unsettled weather possible at times Mon through Thu with the greatest potential for a period of steady rain late Tue into Wed night

Details .

Saturday .

The weekend starts out mild before becoming quite cool for the second half. This unseasonable warmth comes courtesy of SW flow lingering behind a warm front overnight. Ahead of the cold front 850 mb temps rebound briefly to 13C+ so, with decent sunshine after some morning clouds, we should see highs approaching 70 degrees. Dewpoints will be higher too (upper 50s), at least relative to what's coming behind the front (dew points in the 20s and 30s). The cold front swings through during the afternoon and early evening hours. Not expecting much in the way of showers from it given the lack of deep moisture and dynamics.

Saturday night and Sunday .

The main sensible change during this period will be the much cooler and drier airmass behind the front, and the breezy post frontal winds overnight. Much lower dewpoints overnight together with post frontal cold air advection will allow for lows in the low 40s toward the coast, approaching freezing the the far NW interior. High pressure builds in at the surface, expanding SE from Canada. The placement of the high will also keep flow onshore (from the NE) during the day on Sunday. Highs won't make it out of the low 50s, 5 to 10 degrees below normal for late October. In addition to the cooler airmass, winds will be breezy as a weak N/NW low level jet is mixed down. These winds will pick up as early as late Saturday afternoon when the front passes, lasting through the night. The strongest wind gusts though, 30 to 35 mph, will be over the outer waters.

Monday through Thursday .

By Monday a warm front lifts north associated with a wave of low pressure passing northwest of New England. This brings the threat of rain back into the forecast as well as rebounding temperatures, potentially back into the mid 60s along the south coast. Still thinking that the cold front dips through Monday night into Tuesday bringing a marginal cool down before a more substantial frontal system with heavier rain passes in our vicinity around Tuesday night into at least mid week. Plenty of uncertainty with regard to timing and details but overall next week looks more unsettled and cooler.

AVIATION /00Z FRIDAY THROUGH TUESDAY/. Forecaster Confidence Levels .

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

00z TAF Update:

Main concern is IFR cigs coming onshore to Cape Ann and outer Cape Cod this afternoon in response to NE flow. Timing is difficult. Warm land and sunshine will delay and may erode leading edge of low clouds, but as sunset approaches and temps begin to fall these low clouds will come racing onshore. So IFR cigs and MVFR vsbys expected to impact eastern MA after 19z and especially after 21z from NE to SW. Elsewhere, VFR cigs BKN040 at times along with light and variable winds.

Tonight . high confidence on trends but lower on exact timing.

IFR cigs and MVFR vsbys over eastern MA at 00z will spread westward into RI, CT and western-central MA. Mainly dry weather but can't rule out spotty drizzle. Light east wind.

Friday . High confidence on trends but uncertainty on exact timing.

MVFR-IFR in morning low clouds will lift to VFR during the afternoon. Other than spotty light drizzle in the morning, dry weather prevails. Light ESE winds.

Friday night . low confidence.

VFR likely at 00z but MVFR-IFR possibly moving back onshore. Light south winds. Low prob of spotty light drizzle, otherwise mainly dry.

KBOS Terminal . IFR cigs and MVFR vsbys in low clouds coming onshore about 19z-1930z. Uncertain on duration but will impact late day push.

KBDL Terminal . High confidence in TAF.

Outlook /Saturday through Tuesday/ .

Saturday: Mainly VFR, with local IFR possible. Breezy.

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

Sunday: VFR. Breezy.

Sunday Night: VFR. Breezy. Chance FZRA, slight chance SHRA.

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

Monday Night through Tuesday: Mainly VFR, with areas IFR possible. Breezy. Chance SHRA.

MARINE. 415 pm update .

Tonight . east winds 10-15 kt but the bigger story is fog bank impacting eastern MA waters this evening, with fog bank south of Block Island coming onshore later this evening. Thus areas of dense fog and light rain/drizzle overnight. SE swells from Hurricane Epsilon will increase to 3-6ft.

Friday . any leftover fog/drizzle improves by midday or earlier. SE swells increase 4-7 ft. Otherwise high pressure over the Maritimes provides light winds.

Friday night . ridge of high pressure remains overhead but weakens. Thus light winds. Low clouds and fog may redevelop but confidence is low. SE swells from Hurricane Epsilon continue 4-7 ft.

Outlook /Saturday through Tuesday/ .

Saturday: Winds less than 25 kt. Rough seas up to 9 ft. Local visibility 1 to 3 nm.

Saturday Night: Moderate risk for Small Craft Advisory winds with local gusts up to 30 kt. Rough seas up to 9 ft.

Sunday: Winds less than 25 kt. Areas of rough seas.

Sunday Night: Winds less than 25 kt. Seas up to 5 ft.

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

Monday Night: Low risk for Small Craft Advisory winds with gusts up to 20 kt. Seas up to 5 ft. Chance of rain showers.

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

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . None. RI . None. MARINE . Small Craft Advisory until 8 PM EDT Saturday for ANZ250- 254>256.

SYNOPSIS . Nocera/BW NEAR TERM . Nocera/Chai SHORT TERM . Nocera LONG TERM . BW AVIATION . Nocera/BW MARINE . Nocera/BW


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NLNC3 - 8461490 - New London, CT 58 mi59 min S 5.1 G 6 63°F 64°F1024.5 hPa
LDLC3 - New London Ledge CT - Ledge Light Weather 61 mi154 min SSE 4.1 G 5.1 63°F 1023 hPa62°F
NWHC3 - 8465705 - New Haven, CT 62 mi59 min SSW 1.9 G 2.9 66°F 63°F1025.1 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 mi33 minS 710.00 miMostly Cloudy67°F62°F85%1024.2 hPa
Westfield, Barnes Municipal Airport, MA11 mi36 minSSE 510.00 miOvercast67°F63°F87%1023.7 hPa
Windsor Locks, Bradley International Airport, CT16 mi38 minSSE 69.00 miPartly Cloudy66°F62°F87%1023.7 hPa

Link to 5 minute data for KCEF

Wind History from CEF (wind in knots)
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Last 24hrSW5S4SW3SW3CalmW3N4CalmCalmCalmCalmCalmCalmNW4CalmE3W3E4CalmCalmCalmSW4S5S7
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmCalmSE3CalmSW4SW4SW6SW7S5S6S8S5S6S5S6S3S6
2 days agoCalmSE3S3SE4SE4SE4CalmS3S3S3CalmW5W6SW5S6S4S5S5CalmCalmCalmCalm--SE4

Tide / Current Tables for Hartford, Connecticut
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Hartford
Click for Map
Thu -- 03:24 AM EDT     0.04 feet Low Tide
Thu -- 07:11 AM EDT     Sunrise
Thu -- 07:57 AM EDT     1.88 feet High Tide
Thu -- 01:48 PM EDT     Moonrise
Thu -- 03:32 PM EDT     0.39 feet Low Tide
Thu -- 05:57 PM EDT     Sunset
Thu -- 08:14 PM EDT     2.36 feet High Tide
Thu -- 10:58 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.10.70.30.10.10.71.31.71.91.81.61.41.10.90.60.40.40.91.62.12.32.32.11.8

Tide / Current Tables for Rocky Hill, Connecticut
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Rocky Hill
Click for Map
Thu -- 02:16 AM EDT     0.04 feet Low Tide
Thu -- 07:11 AM EDT     Sunrise
Thu -- 07:11 AM EDT     1.98 feet High Tide
Thu -- 01:47 PM EDT     Moonrise
Thu -- 02:24 PM EDT     0.41 feet Low Tide
Thu -- 05:57 PM EDT     Sunset
Thu -- 07:28 PM EDT     2.49 feet High Tide
Thu -- 10:58 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.30.10.20.71.31.821.91.71.51.20.90.60.40.511.62.12.42.52.321.6

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 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.