Sunday, April5, 2020
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Marine Weather and Tides
Danvers, 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 6:16AMSunset 7:16PM Sunday April 5, 2020 3:32 PM EDT (19:32 UTC) Moonrise 4:16PMMoonset 5:19AM Illumination 95% Phase: Waxing Gibbous; Moon at 13 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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ANZ251 Massachusetts Bay And Ipswich Bay- 116 Pm Edt Sun Apr 5 2020
.small craft advisory in effect through Monday morning...
This afternoon..S winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft.
Tonight..S winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 4 to 7 ft.
Mon..NW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt in the afternoon. Seas 3 to 5 ft.
Mon night..W winds 5 to 10 kt. Seas 2 to 4 ft.
Tue..SW winds 5 to 10 kt. Seas 2 to 3 ft.
Tue night..SE winds 5 to 10 kt, becoming ne after midnight. Seas 2 to 4 ft. A chance of rain.
Wed..NE winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. Rain likely.
Wed night..E winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
Thu..S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Showers likely.
Thu night..W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height.
ANZ200 116 Pm Edt Sun Apr 5 2020
Synopsis for massachusetts and rhode island coastal waters.. Weak high pres builds over the waters today with light winds turning s, then a weak cold front will cross the waters late tonight. High pres builds to the west Mon, moving south of the waters Tue. Low pres may track south of new eng Wed, followed by a strong cold front on Thu. Another low pres may develop on this front in new eng, then moving into the gulf of maine. For information on possible hazardous weather beyond the 24-36 hour forecast period, please visit www.weather.gov/boston and follow the current hazards link above the map on the left.


7 Day Forecast for Marine Location Near Danvers, MA
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location: 42.59, -70.91     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 051752 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 152 PM EDT Sun Apr 5 2020

SYNOPSIS.

A weak front will bring spotty showers late this afternoon and tonight. High pressure returns Monday into Tuesday with dry weather with mild afternoon temperatures. Fast moving low pressure will pass near or just south of the region Tuesday night through Wednesday, bringing an area of rain and cool temperatures. Another period of showers will push across late Wednesday night and Thursday, which may end as snow showers across the higher terrain Thursday night. Unsettled conditions may linger into early next weekend along with cool temperatures.

NEAR TERM /UNTIL 6 PM THIS EVENING/.

1 PM Update .

Forecast remains on track, no significant changes in the latest update.

Previous discussions .

10 AM Update .

Increased cloud cover across southern New England per satellite observations. Nudged things toward the latest GLAMP guidance which is a tad bit too cloudy, but looks good when blended with the previous forecast. In addition, decreased high temperatures a few degrees based on the cloudier forecast.

710 AM Update .

Swath of clouds continues to spin across New England as seen on the sunrise visible satellite imagery. There are a few breaks in the cloud deck noted across central NH and into N central VT. With the continued onshore flow, even as winds shift from NE to southerly, clouds will continue through the day. However, with that south wind shift, will see temps rise from late morning through the afternoon, topping off in the 50s to around 60, but will remain cooler across Cape Cod and the islands as well as along the immediate coast.

Near term conditions in rather good agreement with previous forecast. Have updated to bring conditions current.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM MONDAY/.

Tonight .

As mid level shortwave and front sweep across New Eng tonight, a few showers may accompany its passage. Forcing for ascent is weak so and any showers expected to be brief. Behind the front, good low and mid level drying moves in overnight which will result in clearing skies developing from west to east, but the clearing may take until daybreak Mon across SE New Eng. Modest cold advection later tonight with expected lows dropping to mid 30s to around 40 degrees.

Monday .

Stronger shortwave passes well to the north, but dry NW flow in place as high pres builds to the west. Soundings are rather dry and expect full sunshine. Deep boundary layer mixing up to 800 mb or higher with very dry airmass and NW flow will likely result in temps overachieving. Expect highs reaching the low/mid 60, but cooler upper 50s higher terrain and Cape/Islands.

Fire Weather . The deep mixing will result in RH values dropping to 15-25 percent in the afternoon. NW winds will average 10-15 mph but a few gusts to 20-25 mph are possible leading to elevated fire potential.

LONG TERM /MONDAY NIGHT THROUGH SATURDAY/.

Highlights .

* Dry, mild conditions linger Monday night into Tuesday

* An area of rain with cold temperatures move across late Tuesday night and Wednesday, with some wet snow possible across the higher inland terrain

* Expect temperatures to run below seasonal normals late this week into next weekend with fast moving weather systems bringing periods of rain Thu/Thu night which could end as snow showers well inland

* Mainly dry but cold conditions linger late this week into the weekend with spotty rain/snow showers possible across the high terrain

Details .

Monday night and Tuesday .

High pressure ridge will build SE out of Quebec and across the northeast Mon night and Tuesday. With light pressure gradient, expect westerly winds at around 5 to 10 kt through the period. Expect H925 temps rise to +5C to +8C by midday Tuesday, mildest across western areas. Will see a well mixed layer with some local gusts up to around 20 kt mainly across the higher inland terrain.

Lows on Mon night will range from the mid 30s across the higher terrain up to the upper 30s to lower 40s elsewhere. On Tuesday, with mostly sunny skies in place, temps will rebound to the 50s along the immediate coast and higher terrain to the lower 60s across the coastal plain and the CT valley. With the weak pressure gradient in place, still a chance for a weak sea breeze to develop along the shore.

Tuesday night through Wednesday night .

Noting a general W-NW mid level steering flow across central and eastern Canada Tuesday night. This will bring another low pressure center out of the central Great Lakes which will push across southern NY by Wed morning. Low level E-SE winds will bring increasing moisture. 00Z BUFKIT soundings showing a deepening layer of moisture across the region. So, will see rain develop from SW-NE during Tue night and continue into Wednesday night as the low passes close to the S coast or across Long Island.

With chilly temps well inland and across the higher terrain, may see precip start as rain and/or snow before changing to rain by mid morning. Expect temps mainly in the 40s, but could see a couple of 50 degree readings across the lower CT valley.

Expect the low to push offshore early Wednesday night, so precip will briefly taper off. A few showers may linger across N central NW Mass, however. Temps will drop off to the mid 30s to around 40.

Thursday through Saturday .

00Z long range model suite signaling some weak ridging moving across the northeast by around 12Z Thu, but still seeing a low level easterly flow in place. Several model members showing lingering low level moisture so light showers could linger.

The next system in the fast flow will then approach by midday Thu as low pres, associated with cutoff H5 low pushing across the northern Great Lakes, so will see another round of showers move in Thu morning with LKLY POPs across most of the region. The low should push E Thu night, but precip will linger as colder air works in through the night. Precip may taper off before the arrival of the colder air, but could see some light rain and/or snow showers across N central and NW Mass late Thu night into Friday morning before changing back to rain.

As the low exits to the Maritimes and continues to intensify, will see some gusty W winds develop during Friday. Lingering moisture will keep the chance for showers across central and W areas. Should see drier air work in Friday night into Saturday, but can not rule out some lingering moisture and patchy rain and/or snow showers across the interior on Saturday.

AVIATION /18Z SUNDAY THROUGH FRIDAY/.

Forecaster Confidence Levels .

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

18Z Discussion .

Today . High confidence

High pressure sliding offshore, while a weak cold front slides in from the west. Generally anticipate VFR conditions. Will see some MVFR ceilings at the higher elevations. Potential for some MVFR across the CT River Valley late this afternoon as showers spread in. Light southerly winds becoming more southwest. Only exception is at BOS where easterly winds shift to the west as front is approaching.

Tonight . High confidence

Generally VFR, but may have spotty MVFR ceilings. Best opportunity early tonight is across the CT River Valley and ORH. Better opportunity is across southeast MA, Cape Cod and the Islands late tonight. Potential for MVFR at BOS/BED, but have backed off and hinted at the possibility. Just not convinced the shower activity will reach these locations per the latest guidance. Skies clearing from west to east, though low ceilings and potentially fog may linger across Cape Cod and Nantucket.

With the front passing through winds shift to the west and eventually the northwest. Expect speeds at or less than 10 kts.

Monday . High confidence

High pressure builds in. This will keep conditions VFR with clear skies. The mixed layer will grow and anticipate gusty northwest winds. Not out of the question there are some 20-25 kt gusts across the higher elevations. Elsewhere gusts generally max out between 15-20 kts.

KBOS Terminal . High confidence in the TAF. Moderate confidence this evening with regards to MVFR ceilings and showers.

KBDL Terminal . High confidence in the TAF.

Outlook /Monday Night through Thursday/ .

Monday Night through Tuesday: VFR.

Tuesday Night: Mainly VFR, with areas MVFR possible. RA likely.

Wednesday: Mainly MVFR, with areas IFR possible. Breezy. RA likely, chance SHRA.

Wednesday Night: MVFR/IFR conditions possible. Slight chance SHRA.

Thursday: Mainly MVFR, with local IFR possible. Breezy. SHRA likely.

MARINE.

Winds turn southerly this afternoon, then shift to NW late tonight behind a cold front, with NW winds continuing Mon. Speeds will remain below 20 kt. Seas 4 to 8 ft through the morning, then will gradually subside during the afternoon but will remain at or above 5 ft across the open waters. Small Craft Advisories remain in effect.

Still some large easterly swell over eastern MA waters with seas up to 10 ft early this morning. This swell will slowly subside but not likely drop below 5 ft until sometime on Mon. SCA continues.

Outlook /Monday Night through Thursday/ .

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

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

Tuesday Night: Winds less than 25 kt. Chance of rain.

Wednesday: Winds less than 25 kt. Seas locally approaching 5 ft. Rain likely, chance of rain showers.

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

Thursday: 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 2 PM EDT Monday for ANZ250-254-255. Small Craft Advisory until 8 AM EDT Monday for ANZ251. Small Craft Advisory until 2 AM EDT Monday for ANZ256.

SYNOPSIS . KJC/EVT NEAR TERM . BL SHORT TERM . KJC LONG TERM . EVT AVIATION . BL MARINE . BL/EVT


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BHBM3 - 8443970 - Boston, MA 18 mi51 min 46°F 45°F1015.4 hPa
44029 - Buoy A0102 - Mass. Bay/Stellwagen 19 mi89 min S 9.7 G 9.7 42°F 42°F10 ft1015.5 hPa
44013 - BOSTON 16 NM East of Boston, MA 22 mi43 min ESE 12 G 14 43°F 43°F7 ft1015.9 hPa (-2.0)41°F
IOSN3 - Isle of Shoals, NH 30 mi33 min SSE 17 G 19 42°F 1015.3 hPa (-2.5)40°F
44073 36 mi89 min SSE 9.7 G 14 43°F 42°F
44098 - Jeffrey's Ledge, NH (160) 42 mi25 min 43°F8 ft
44030 - Buoy B0102 - Western Maine Shelf 48 mi89 min S 9.7 G 14 8 ft1018.6 hPa
44018 - SE Cape Cod 30NM East of Nantucket, MA 49 mi43 min SSE 5.8 G 7.8 42°F 7 ft1017.4 hPa (-1.1)36°F

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Beverly, Beverly Municipal Airport, MA1 mi40 minSSE 910.00 miOvercast50°F37°F63%1015.8 hPa
Lawrence Municipal Airport, MA15 mi39 minVar 510.00 miOvercast56°F37°F51%1016 hPa
Boston, Logan International Airport, MA16 mi39 minESE 1210.00 miOvercast47°F37°F71%1016.1 hPa
Laurence G Hanscom Field Airport, MA22 mi42 minSSW 710.00 miOvercast56°F39°F53%1016.6 hPa

Link to 5 minute data for KBVY

Wind History from BVY (wind in knots)
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Last 24hrSE9SE7SE5SE6SE4CalmS3S4S5CalmCalmCalmCalmCalmSE3CalmS66S6S5SE8SE9SE10SE9
1 day agoNE17
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2 days agoNW15NW14
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Tide / Current Tables for Beverly, Massachusetts
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Beverly
Click for Map
Sun -- 03:12 AM EDT     0.37 feet Low Tide
Sun -- 05:17 AM EDT     Moonset
Sun -- 06:18 AM EDT     Sunrise
Sun -- 09:29 AM EDT     10.02 feet High Tide
Sun -- 03:47 PM EDT     -0.55 feet Low Tide
Sun -- 04:15 PM EDT     Moonrise
Sun -- 07:14 PM EDT     Sunset
Sun -- 10:05 PM EDT     9.66 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.43.31.40.40.82.44.46.68.79.99.88.66.64.21.8-0-0.50.52.44.778.99.79.1

Tide / Current Tables for Marblehead Channel, Massachusetts Current
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Marblehead Channel
Click for Map
Sun -- 02:02 AM EDT     -0.38 knots Max Ebb
Sun -- 04:28 AM EDT     0.00 knots Slack
Sun -- 05:17 AM EDT     Moonset
Sun -- 06:17 AM EDT     Sunrise
Sun -- 07:19 AM EDT     0.44 knots Max Flood
Sun -- 10:21 AM EDT     -0.00 knots Slack
Sun -- 02:18 PM EDT     -0.44 knots Max Ebb
Sun -- 04:15 PM EDT     Moonrise
Sun -- 04:56 PM EDT     0.00 knots Slack
Sun -- 07:14 PM EDT     Sunset
Sun -- 08:05 PM EDT     0.49 knots Max Flood
Sun -- 10:57 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.3-0.4-0.4-0.4-0.20.20.40.40.40.30.1-0.1-0.3-0.4-0.4-0.4-0.300.30.50.50.40.2-0

Weather Map
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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 (15,3,4,5)
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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.