Tuesday, September22, 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 6:36AMSunset 6:48PM Tuesday September 22, 2020 12:22 AM EDT (04:22 UTC) Moonrise 12:50PMMoonset 10:20PM Illumination 24% Phase: Waxing Crescent; Moon at 5 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- 1121 Pm Edt Mon Sep 21 2020
Tonight..N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Tue..N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft.
Tue night..NW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft.
Wed..W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Wed night..NW winds 5 to 10 kt. Seas around 2 ft.
Thu..W winds 5 to 10 kt, becoming sw in the afternoon. Seas 1 ft or less.
Thu night..W winds 5 to 10 kt. Seas 1 ft or less.
Fri..N winds 5 to 10 kt, becoming se in the afternoon. Seas 1 ft or less.
Fri night..SE winds 5 to 10 kt. Seas 1 ft or less.
Sat..SE winds 5 to 10 kt. Seas 1 ft or less, then around 2 ft in the afternoon.
Sat night..S winds 5 to 10 kt. Seas around 2 ft.
ANZ300 1121 Pm Edt Mon Sep 21 2020
Synopsis for the long island waters and new york harbor.. High pressure will remain in control through Tuesday night. Hurricane teddy will pass well east of the waters Tuesday and into the canadian maritimes mid week. Refer to the national hurricane center for official forecasts concerning teddy. High pressure remains over centered over the mid-atlantic into Thursday before a weak frontal system approaches from the great lakes into Friday. High pressure returns to start the weekend.


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 220210 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 1010 PM EDT Mon Sep 21 2020

SYNOPSIS.

Cooler than normal temperatures continue tonight and Tuesday. A warming trend follows through the weekend with above normal temperatures for much of that time. Hurricane Teddy will pass well east of our coastline Tuesday as it heads into the Canadian Maritimes. While we will remain dry, it will bring a period of strong winds along the coast. Minor coastal flooding and some beach erosion may also occur during the Tuesday afternoon and early evening high tide. Otherwise, the prolonged period of dry weather continues right through the week. An approaching cold front may bring showers next Monday.

NEAR TERM /UNTIL 6 AM TUESDAY MORNING/.

1010 PM Update .

Unusually strong high pressure for this time of year was centered over northern New England was resulting in one more night of unseasonably chilly temperatures. Light winds away from the coast will allow for ideal radiational cooling conditions overnight. Many locations will once again bottom out in the 30s with a few of the normally coolest outlying dropping between to 32 degrees or just below. Frost Advisories remain posted for many of the outlying locations where the growing season is still officially active.

Meanwhile . many locations across the Cape and Islands will not drop below 50. This a result of the NE wind blowing off the relatively mild ocean. In fact, we should see wind gusts increase to between 20 and 30 mph after midnight in this region. This a result of distant Hurricane Teddy beginning to interact with the high pressure system over northern New England.

SHORT TERM /6 AM TUESDAY MORNING THROUGH 6 PM TUESDAY/. Highlights

* Fire Weather Watch for all of MA and RI.

* Wind Advisory for Cape Cod, Marthas Vineyard and Nantucket.

* Pockets of Minor Coastal Flooding/Beach Erosion late Tuesday afternoon/early evening.

* Dangerously High Surf on Tuesday along ocean exposed beaches.

Ridge of high pressure continues to build over the eastern Great Lakes into Quebec on Tuesday. Trough continuing to interact with Hurricane Teddy. At the surface, high pressure still in control while Hurricane Teddy lifts toward Nova Scotia.

Expect the weather to remain dry across southern New England. The pressure gradient continues to tighten due to the strong high in control and Hurricane Teddy lifting toward Nova Scotia. Have increased wind speeds and gusts toward high resolution guidance, ARW/NMM/NAMNest, which show the stronger mixing. As a result have expanded the Wind Advisory to include Marthas Vineyard. As the previous shift mentioned it does appear that Nantucket is flirting with High Wind Warning criteria with a period of sustained 35 kt gusts during the afternoon. Still have held off from the Warning based on model consensus and the area covered is quiet small for a brief period of time. Will have northerly winds at 10-15 mph across roughly the western half of the CWA with gusts of 20-25 mph. The eastern half of the CWA will see sustained winds of 15-30 mph with gusts of 30-45 mph with the highest speeds over Cape Cod and the Islands.

On top of the gusty winds, which will promote mixing of drier air into the region. Have lowered the dewpoints toward the 10th percentile of guidance due to the strong mixing anticipated. This results in widespread dewpoints in the 30s, except for the Cape and Islands where it remains in the low 40s. The low dewpoints coupled with the strong winds will result in critical fire weather conditions across MA and RI per coordination with our Fire Weather Partners. Expecting widespread minimum relative humidities within the 20 to 35 percent range.

Lastly, temperatures will be an upward trend in comparison to the past couple of days. It still will be a bit cooler than normal for this time of year, but will have readings getting into the 60s and low 70s across the region.

LONG TERM /TUESDAY NIGHT THROUGH MONDAY/. Big Picture .

Closed circulation associated with Hurricane Teddy moves off to northeast through Nova Scotia. Northwest flow takes over in New England Wednesday, then weakens as upper high builds over the Northeast USA through the weekend. Broad trough moves from the Pacific Northwest Friday to New England Monday.

Contour heights build starting midweek, trending above normal late week and then lowering again early next week. This suggests a warming trend from midweek to the weekend, then cooling early next week.

Model mass fields are similar through Saturday, then diverge Sunday and Monday with the approaching shortwave. Forecast confidence is high Wednesday through Saturday, then lowers to low-moderate by Monday.

Details .

Tuesday night-Wednesday .

Teddy moves off to the northeast Tuesday night/Wednesday. Main concerns will be along the coast with leftover winds and coastal flooding/high surf. The pressure gradient will be less over the interior, strongest along the MA East Coast. But the trend during these 24 hours will be toward diminishing gradient and thus diminishing wind.

A weak shortwave moves through the northwest flow aloft Wednesday. Cross sections show moisture overhead between 700 mb and 925 mb and drier air below 925 mb. The limited and shallow moisture underlain by dry air suggests difficulty for showers. Will indicate some clouds during Wednesday but otherwise dry weather.

May lower temps for Tuesday night in Western MA/CT due to lighter winds, otherwise continue with a general range of 45-55. Daytime mixing on Wednesday will reach to between 850 and 900 mb. Temps at that level will be 9-10C, supporting sfc max temps in the 70s . mid to upper 70s in most areas. Northwest winds in the mixed layer will be near 25 mph.

Wednesday night through Monday .

High pressure builds over the region Thursday, then shifts offshore Friday and the weekend. This is a dry weather pattern for that period. There continue to be signs of a weak cold front from Canada that reaches Northern New England by early Friday. This could bring clouds and maybe an isolated shower to Southern New England early Friday. But low probability, so will keep POPs below 15 pct for now.

Temps at 850 mb will be 12-14C through the period, while 900 mb temps will be equiv to 9-11C. Will keep max temps a little cooler than 850 values would suggest. Values in the mid 70s to around 80, but mostly 70s Sunday-Monday. Expect sea breezes Friday and Saturday along the Mass East coast. Dew points rise into the 50s for much of the period, and winds will be light. So min temps should be in the 50s.

Low level flow turns from the south Sunday, which may bring low- level clouds/drizzle by Sunday night.

The Pacific NW trough approaches Monday, with cross sections showing brief deep moisture while PW values climb to around 1.75 inches. Upper jet leading the trough sweeps its right entrance region over Srn New England, which would add supporting lift to the factors. On the other hand this is a day 7 forecast and as noted above there is lower confidence in the Day 7 mass fields. The forecast will indicate showers for Monday, but with POPs limited to 30-40 pct.

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

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

Tonight . High confidence.

VFR conditions persist. The majority of terminals will see light NE winds shifting to the N. Cape Cod and the Islands will see increasing wind gusts with winds shifting from the N. Gusts of 25-40 kts.

Tuesday . High confidence.

VFR continues with strong northerly winds. Gusts 20 to 25 knots across the interior, 25 to 30 knots near and southeast of the Boston to Providence corridor, and 35 to 45 knots across the Cape and Nantucket.

Tuesday Night . High confidence.

VFR continues with N winds shifting to the NW. Remaining gusty, near 45 kt in the evening, but will see the speeds diminishing as the night progresses.

KBOS Terminal . High confidence in TAF.

KBDL Terminal . High confidence in TAF. Outlook /Tuesday Night through Saturday/ .

Wednesday: VFR. Breezy.

Wednesday Night through Saturday: VFR.

MARINE. * Dangerously High Seas of 15-20+ feet Tue into Tue night for the eastern MA coastal waters

* Storm Warnings for Nantucket Sound points south and east with Gale Warnings for most other open waters

Tonight . High confidence.

High pressure over northern New England will continue to result in cool advection over the waters. This will promote mixing and gusty winds out of the NE to N at 20 to 30 knots and perhaps bit stronger southeast of Nantucket especially toward daybreak. 7 to 10 foot seas across the open waters.

Tuesday . High confidence.

Hurricane Teddy will passes well to the east of our waters. Despite that will have a strong pressure gradient with a high remaining planted over the region. This results in strong northerly winds and dangerously high seas for mariners. Confidence has increased enough to issue a Storm Warning in the locations mentioned above. Northerly wind gusts of 40 to 50 knots with seas reaching 20+ feet. Across most of our other waters, have continued the Gale Warnings for northerly wind gusts of 30 to 45 knots. This will be a dangerous storm for mariners, especially in our waters east of the outer-Cape and Nantucket.

Tuesday Night . High confidence.

Strong winds gradually diminishing as Hurricane Teddy lifts into the Canadian Maritimes. Seas remaining rough, but gradually diminishing as the night progresses.

Outlook /Tuesday Night through Saturday/ .

Wednesday: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Rough seas up to 15 ft.

Wednesday Night: Winds less than 25 kt. Areas of seas approaching 5 ft.

Thursday through Saturday: Winds less than 25 kt. Seas less than 5 ft.

FIRE WEATHER. * Fire Weather Watch on Tuesday across all of MA and RI.

Distant Hurricane Teddy should generate 20 to 30 mph wind gusts over most areas but between 40 and 50 mph for Cape Cod and Nantucket. Minimum RH values will drop to between 20 and 35 percent in most locations. Per coordination with our MA and RI Fire Weather partners have issued a Fire Weather Watch for all of MA and RI.

TIDES/COASTAL FLOODING. * Coastal Flood Advisory Tuesday afternoon/early evening

* High Surf/Dangerous Rip Currents especially on Tue

Distant Hurricane Teddy results in some pressure falls and the potential for northerly wind gusts of 40 to 50 mph across the Cape/Nantucket on Tuesday. This combined with very highs seas of 15-20+ feet offshore may result in pockets of minor coastal flooding along the eastern MA coast. This is especially true on the north facing coastline across Cape Cod Bay and Nantucket Sound given the wind trajectory will be favorable. This will likely bring a 1 to 2 foot storm surge. While we are not expecting a significant/damaging coastal flood event, inundation on vulnerable shoreline roadways will likely occur within a few hours of the high tide along with beach erosion. Have continued the coastal flood advisory for the eastern MA coast, Cape and Islands for the Tuesday afternoon and early evening high tide.

Lastly, High Surf Advisories remain in place into Tuesday night across all ocean exposed beaches. The worst of the conditions will be on Tuesday when very high offshore seas may result in extremely high breakers on beaches. Dangerous rip currents expected too.

BOX WATCHES/WARNINGS/ADVISORIES. CT . Frost Advisory from 1 AM to 8 AM EDT Tuesday for CTZ002>004. MA . Fire Weather Watch from 9 AM EDT Tuesday through Tuesday evening for MAZ002>024-026. High Surf Advisory until 6 AM EDT Wednesday for MAZ007-019-020- 022>024. Coastal Flood Advisory from 2 PM to 6 PM EDT Tuesday for MAZ007-015-016-019-022>024. Frost Advisory from 1 AM to 8 AM EDT Tuesday for MAZ004>006- 009-012-013-017. Wind Advisory from 6 AM to 11 PM EDT Tuesday for MAZ024. Wind Advisory from 9 AM to 11 PM EDT Tuesday for MAZ022. Wind Advisory from 9 AM to 8 PM EDT Tuesday for MAZ023. RI . Fire Weather Watch from 9 AM EDT Tuesday through Tuesday evening for RIZ001>008. High Surf Advisory until 6 AM EDT Wednesday for RIZ006>008. MARINE . Storm Warning from 11 AM to 11 PM EDT Tuesday for ANZ232-254- 255. Gale Warning from 8 AM Tuesday to 8 AM EDT Wednesday for ANZ231-233>235-250. Small Craft Advisory from 9 AM to 7 PM EDT Tuesday for ANZ230- 236. Small Craft Advisory until 8 PM EDT Tuesday for ANZ237. Gale Warning from 8 AM to 11 PM EDT Tuesday for ANZ251-256.

SYNOPSIS . WTB/BL NEAR TERM . Frank SHORT TERM . BL LONG TERM . WTB AVIATION . WTB/BL MARINE . WTB/BL FIRE WEATHER . Staff TIDES/COASTAL FLOODING . Staff


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NLNC3 - 8461490 - New London, CT 58 mi52 min 49°F 65°F1027.9 hPa
NWHC3 - 8465705 - New Haven, CT 62 mi52 min 52°F 65°F1027.9 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 mi26 minN 010.00 miFair34°F32°F93%1029.2 hPa
Westfield, Barnes Municipal Airport, MA11 mi29 minN 010.00 miFair38°F36°F93%1029.1 hPa
Windsor Locks, Bradley International Airport, CT16 mi31 minN 010.00 miFair39°F35°F86%1028.7 hPa

Link to 5 minute data for KCEF

Wind History from CEF (wind in knots)
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Last 24hrCalmCalmCalmCalmNE3CalmCalmCalmNE5N5CalmNE6E7NE8CalmE8NE3E4CalmE3CalmNW3CalmCalm
1 day agoCalmNE4NE4N3NE5NE4CalmN3N6N5NE8
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2 days agoN8N4N5CalmCalmCalmCalmN3N11N10N10N12N12
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Tide / Current Tables for Hartford, Connecticut
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Hartford
Click for Map
Tue -- 02:45 AM EDT     -0.03 feet Low Tide
Tue -- 06:38 AM EDT     Sunrise
Tue -- 07:12 AM EDT     2.08 feet High Tide
Tue -- 12:50 PM EDT     Moonrise
Tue -- 02:53 PM EDT     0.23 feet Low Tide
Tue -- 06:47 PM EDT     Sunset
Tue -- 07:34 PM EDT     2.57 feet High Tide
Tue -- 10:22 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.30-00.51.21.82.121.81.51.10.80.50.30.20.61.42.12.52.62.421.6

Tide / Current Tables for Rocky Hill, Connecticut
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Rocky Hill
Click for Map
Tue -- 01:37 AM EDT     -0.04 feet Low Tide
Tue -- 06:26 AM EDT     2.19 feet High Tide
Tue -- 06:38 AM EDT     Sunrise
Tue -- 12:49 PM EDT     Moonrise
Tue -- 01:45 PM EDT     0.25 feet Low Tide
Tue -- 06:46 PM EDT     Sunset
Tue -- 06:48 PM EDT     2.71 feet High Tide
Tue -- 10:22 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.3000.51.21.82.22.21.91.61.20.90.60.30.30.71.42.12.62.72.52.21.81.3

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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Ground Weather Radar Station Boston, MA
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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.