Thursday, April9, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Madaket, 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 6:12AMSunset 7:20PM Thursday April 9, 2020 7:39 PM EDT (23:39 UTC) Moonrise 9:24PMMoonset 7:25AM Illumination 95% 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
    EDIT      (on/off)   Help
ANZ273 Expires:202004092121;;842639 Fzus71 Kbox 092112 Mwsbox Marine Weather Statement National Weather Service Boston/norton Ma 512 Pm Edt Thu Apr 9 2020 Anz233>235-256-273-092121- /o.can.kbox.ma.w.0011.000000t0000z-200409t2230z/ 512 Pm Edt Thu Apr 9 2020
.the special marine warning is cancelled... The affected areas were... Buzzards bay... Coastal waters from Montauk ny to marthas vineyard extending out to 20 nm south of block island... Ocean waters from Montauk ny to marthas vineyard from 25 to 40 nm offshore... Rhode island sound... Vineyard sound... The Thunderstorms have moved out of the warned area and no longer pose a significant threat to boaters. Lat...lon 4110 6917 4069 6952 4058 6988 4061 7043 4169 7002 4185 6911 time...mot...loc 2111z 261deg 47kt 4166 6996 4049 7041
ANZ200 716 Pm Edt Thu Apr 9 2020
Synopsis for massachusetts and rhode island coastal waters.. A strong cold front crosses the waters this evening. Low pres develops on this front in new england, intensifying as it moves into the gulf of maine tonight then into the maritimes Fri. High pressure will be centered southeast of the waters for Sat. 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 Madaket, MA
   Hourly   EDIT   Help
location: 40.5, -70.62     debug


Area Discussion for - Boston, MA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KBOX 092045 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 445 PM EDT Thu Apr 9 2020

SYNOPSIS. Low pressure and its associated cold front track east of our area during early this evening. Behind the front, expecting mainly dry conditions with strong wind gusts. Cooler Friday 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/.

430 pm update .

Triple point low developed over our area this afternoon, and based on 4 pm obs was passing over eastern MA. In the vicinity of this low there is a bit of a lull in the winds, around 10-15 mph with some gusts to 30 mph. Otherwise, winds are ramping up, with W/NW winds gusting to 35-45 mph west of the low/cold front (western MA into north central CT), and SSE gusts 30-50 mph near the Cape/Islands in the warm sector. There were still some lightning pulses near/south of south east MA, where MUCape managed to climb to 500-1000 J/kg!

The low and cold front track eastward over the next 2 hours, moving offshore 22-23Z timeframe, taking the showers with it. By 00Z there is still a slight chance of showers in northeast MA and into the Cape, then dry conditions thereafter. Winds will become more uniform W/NW 15-25 mph with gusts 35-50 mph. Wind Advisory continues until 9 pm this evening. After 9 pm winds diminish but gusts of 25 to 30 mph linger into the overnight, with some higher gusts 30 to 40 mph for the overnight along the immediate east coastal MA shoreline, the Cape and Islands, and Block Island.

Decreasing clouds behind the front/low this evening, with skies becoming mostly clear. However later tonight an increase in clouds with chance of showers on Martha's Vineyard/Nantucket with short wave passing through with enough lingering moisture to support low chance/slight chance pops. Also, wrap around moisture behind the low and the approach of a mid level trough axis could result in some snow showers over the interior high terrain of NW MA.

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 /21Z THURSDAY THROUGH TUESDAY/. Forecaster Confidence Levels .

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

2030z update . Moderate confidence.

This evening/Tonight . Widespread MVFR/IFR SHRA over central/eastern MA, RI and NE CT transition offshore by 00Z. This occurs as a surface low over our area at 2030Z, and an associated cold front, also moves offshore. Can't rule out some TSRA over Cape/Islands thru 22Z, otherwise thunder threat is coming to an end.

Cape/Islands SE winds gusting 35-45 kts become W/NW 23-00Z. Winds diminish after 01Z but gusts 30-40 mph last into the overnight. Becoming VFR this evening.

For the remainder of the area, Winds becoming NW/W with gusts 35-40 kts thru 01Z, then gusts diminish to 25-30 mph. Becoming VFR. MVFR possible high terrain of northwest MA.

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 .

Strong cold front sweeps across the waters through 8 pm. South winds shift from the west with gusts 40 to 45 kt. Showers and areas of thunder will accompany the front, and move off to the east with the front. Briefly poor vsbys with the showers. Once the front moves through, vsbys will improve as drier air moves in. Seas 5 to 9 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 9 PM EDT this evening for CTZ002>004. MA . Wind Advisory until 9 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 9 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 . NMB SHORT TERM . NMB LONG TERM . WTB AVIATION . WTB/NMB MARINE . WTB TIDES/COASTAL FLOODING . Staff


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44097 - Block Island, RI (154) 42 mi130 min 44°F8 ft
NTKM3 - 8449130 - Nantucket Island, MA 61 mi130 min WSW 7 G 12 51°F 47°F985.9 hPa
BUZM3 - Buzzards Bay, MA 66 mi160 min WSW 29 G 32 986.2 hPa (-0.8)
44020 - NANTUCKET SOUND 71 mi120 min 4 ft

Wind History for Nantucket Island, MA
(wind in knots)    EDIT      (on/off)   Help
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
Last
24hr
NE2
NE3
SE2
SE1
--
S1
S3
S4
G7
S5
S4
G7
S5
G9
S5
G9
S6
G11
SE8
G13
SE7
G14
SE10
G18
SE13
G18
SE17
G25
SE15
G25
SE11
G24
SE12
G22
S11
G23
SW7
G11
W4
G13
1 day
ago
SW7
G11
SW6
G9
SW6
G10
SW7
G13
SW5
G9
W3
G6
SW2
--
S1
E2
S2
SE1
E1
E3
NE6
G9
NE9
G13
NE7
G11
NE6
NE5
G10
N4
G8
N6
N8
N7
G10
N3
G6
2 days
ago
SW6
G9
SW6
G10
SW5
G10
SW5
G9
SW6
G10
W6
G11
W6
G10
W4
G9
W5
G10
W6
G11
W6
G10
W5
G8
W9
G12
NW9
G13
W9
G13
NW9
G12
W6
G10
W3
G12
W7
G15
W11
G18
SW9
G15
SW10
G15
SW11
G17
SW8
G14

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Nantucket, Nantucket Memorial Airport, MA60 mi47 minW 129.00 miOvercast48°F46°F93%984.7 hPa

Link to 5 minute data for KACK

Wind History from ACK (wind in knots)
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
Last 24hrN6CalmCalmCalmCalmE3SE7SE8S8S7S8S10SE12SE12SE14SE19SE18SE23
G28
SE24SE22SE25
G35
S20
G30
W13W12
1 day agoSW10SW7SW6SW7SW5SW6CalmCalmSE3CalmCalmNE3E4CalmNE9NE12NE14NE13N12N12N11N10N10N8
2 days agoSW8SW8SW10SW9SW8W10W9W9W8NW9NW8NW9NW10NW10W10W8W12W13W14W15SW13SW12SW11SW8

Tide / Current Tables for No Man's Land, Massachusetts
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
No Man's Land
Click for Map
Thu -- 03:20 AM EDT     -0.83 feet Low Tide
Thu -- 06:12 AM EDT     Sunrise
Thu -- 07:24 AM EDT     Moonset
Thu -- 09:20 AM EDT     3.51 feet High Tide
Thu -- 03:26 PM EDT     -0.65 feet Low Tide
Thu -- 07:17 PM EDT     Sunset
Thu -- 09:26 PM EDT     Moonrise
Thu -- 09:42 PM EDT     3.99 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
1.50.4-0.4-0.8-0.7-0.20.81.92.93.53.42.71.60.6-0.2-0.6-0.6-0.10.81.933.843.4

Tide / Current Tables for Nomans Land, Martha's Vineyard, Massachusetts
   EDIT      (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS Local Image of Northeast    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 (19,4,5,8)
      (on/off)   Help

Ground Weather Radar Station Boston, MA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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.