Wednesday, April1, 2020
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Marine Weather and Tides
Revere, 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 6:23AMSunset 7:11PM Wednesday April 1, 2020 7:44 AM EDT (11:44 UTC) Moonrise 11:34AMMoonset 2:21AM Illumination 60% Phase: Waxing Gibbous; Moon at 8 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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ANZ230 Boston Harbor- 716 Am Edt Wed Apr 1 2020
.small craft advisory in effect from late tonight through Friday morning...
Today..N winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft, except 3 to 5 ft at the outer harbor entrance.
Tonight..N winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft, except 3 to 5 ft at the outer harbor entrance. A chance of rain.
Thu..NW winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft, except 4 to 6 ft at the outer harbor entrance. Rain. Vsby 1 to 3 nm.
Thu night..N winds 15 to 20 kt with gusts up to 30 kt. Waves around 2 ft, except 5 to 8 ft at the outer harbor entrance. Patchy fog. Rain. Vsby 1 to 3 nm.
Fri..N winds 15 to 20 kt with gusts up to 30 kt. Waves around 2 ft, except 6 to 9 ft at the outer harbor entrance. Patchy fog. Showers likely. Vsby 1 to 3 nm.
Fri night..NE winds 15 to 20 kt with gusts up to 30 kt. Waves around 2 ft, except 6 to 9 ft at the outer harbor entrance. A chance of showers.
Sat through Sun night..SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft, except 5 to 8 ft at the outer harbor entrance. 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 716 Am Edt Wed Apr 1 2020
Synopsis for massachusetts and rhode island coastal waters.. A gale center will track well south and east of the waters through tonight then become nearly stationary into Fri. The storm will bring gale force winds tonight into Fri. High pres will build over the waters during the weekend. 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 Revere, MA
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location: 42.44, -71.01     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 011115 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 715 AM EDT Wed Apr 1 2020

SYNOPSIS. Mainly dry and cool conditions today as northerly flow continues. A large ocean storm will track well southeast of New England tonight then stall into Friday. This storm will bring occasional rain to eastern and southeast New England, strong winds over the Cape/Islands and potential for minor coastal flooding along east coastal Massachusetts. Clouds will linger on Saturday with dry and cool conditions. Another fast moving, weak system will bring spotty showers Sunday afternoon into early Monday, followed by dry conditions and seasonable temperatures late Monday into Tuesday.

NEAR TERM /UNTIL 6 PM THIS EVENING/.

7 AM Update .

Noting 987 hPa low pres located E of the outer banks of NC as seen on 10Z MSAS surface map depiction, with weak ridging building S across New England out of southern Quebec. With a general N-NE wind flow in place, noting patchy low clouds moving onshore, lingering along the immediate coast as well as Cape Cod and the islands, with mainly mid and high clouds further inland.

Short range models suggest lower clouds, about 4-6Kft, will develop across central and W areas by around midday, with the chance for even lower clouds moving onshore as the moisture layer deepens.

Near term forecast in good shape, but did update to bring conditions current.

Previous Discussion .

N/NE flow will result in increasing low level moisture which will back in across eastern New Eng through the day. This will bring lots of clouds to eastern MA into RI with more sunshine further to the west, especially into the CT valley. Another chilly day with temps several degrees below normal, ranging from lower 40s across eastern MA to near 50 in the CT valley. Strengthening N/NE flow as storm deepens to the south with gusts 25-30 mph developing this afternoon over the Cape/Islands.

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

Tonight .

Sub 980 mb low tracks well SE/E of the 40N/70W benchmark. However, large circulation with developing warm advection and deep moisture wrapping to the west will result in some light rain backing in across the Cape/Islands this evening and possibly into eastern MA overnight. Much of the rest of SNE expected to remain dry. Increasing N winds along the coast, with gusts 35-45 mph developing overnight outer Cape/ACK with 25-30 mph along the immediate coast.

Thursday .

Ocean storm expected to stall well east of the benchmark in response to strong downstream blocking over the north Atlantic. Deep moisture plume and a well defined TROWAL will rotate westward into New Eng. This will bring periods of rain to eastern MA which is expected to gradually push west through SNE in the afternoon. Low level temp profile warm enough to support rain in the higher elevations. Gusty northerly winds expected with gusts 35-45 mph Cape/Islands with a risk for 50 mph over ACK where wind advisories may be needed. 25-35 mph gusts expected elsewhere. Highs mostly in the 40s, to near 50 in the lower CT valley which will be dry into the afternoon.

Coastal flooding . There is a risk for minor coastal flooding at Nantucket Harbor for the Thu morning high tide. The astronomical tide is 3.3 ft. Gale force N winds may result in 2 ft storm surge which would bring the storm tide above the 5 ft flood stage. The evening high tide is less of a risk due to the astronomical tide being lower (2.5 ft).

LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/.

Highlights .

* An area of rain will move onshore as an ocean low passes well south and east of the region through early Saturday, along with below normal temperatures

* Expect mainly dry conditions later Saturday into early Sunday, then another weak system and cold front will bring spotty showers Sunday afternoon into early Monday

* High pressure brings dry conditions and seasonable temperatures Monday into Tuesday

Details .

Thursday night through Saturday .

00Z models continue to signal long wave blocking pattern across the North America and beyond during this timeframe, with cutoff H5 low pres across western Canada and a second low S of Nova Scotia around 00Z Friday. The low at the surface and aloft will remain SE of the region through Friday night and possibly into early Saturday morning.

With the deep cyclonic flow in place, the area of rain will continue across the region Thursday night. With cooler temperatures across the E slopes of the Berkshires, may see some mixing with light snow at times as well. The precip should taper off to showers during Friday as the cutoff low slowly shifts E during the day. Will see the winds become northerly, so this will allow drier air to slowly work into western areas Friday afternoon but showers linger closer to the coast. It will remain chilly on Friday, with highs only in the mid 40s to around 50, mildest across the CT valley.

There will also be strong wind gusts as the tight pressure gradient remains between the offshore low and high pressure to the W. So, will see strong N-NE winds continue Thu night into early Fri night with gusts up to 25-35 kt, possibly higher at times across Cape Cod and the islands.

The cyclonic flow associated with the upper low will finally push offshore Friday night as the showers end across western Mass/N central CT, but will continue to linger along E coastal areas. The precip will finally shift offshore toward daybreak Saturday, exiting Cape Cod and the islands by mid morning. Clouds will linger through most of Saturday as winds slowly diminish.

Coastal flood potential . Another aspect that is a concern are the increasing astronomical tides during this timeframe. This, along with the persistent northerly winds over several tide cycles, there is the potential for coastal flooding during the Friday morning tide across the Cape Cod Bay side especially in the Sandwich and Dennis areas as well as in Nantucket Harbor. Also monitoring the high tides on Friday night and Saturday for the possibility of minor coastal flooding at Nantucket.

Saturday night through Sunday night .

Ridging at the surface and aloft finally approaches from the W with dry conditions Saturday night as the northern stream mid level steering flow starts to flatten out. The ridge will shift E by early Sunday as clouds start to increase across western areas. Will see a cold front approach, but this appears to be a moisture starved system. May see spotty showers as the front shifts across the region Sunday afternoon and night. Expect the front to approach east coastal Mass by daybreak Monday.

Monday and Tuesday .

At this point, may see a few lingering showers along the S coast early Monday as the cold front moves offshore, then high pressure should build across the northeast out of western Quebec. The high should linger through most of Tuesday with dry conditions. Expect highs to run close to seasonal levels both days, topping off mainly in the 50s except cooler across Cape Cod and the islands.

AVIATION /12Z WEDNESDAY THROUGH SUNDAY/. Forecaster Confidence Levels .

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

Today . Moderate confidence due to some uncertainty with how far inland MVFR cigs will track.

MVFR CIGS across much of SE MA/S coastal RI early this morning will shift slowly W across most of E Mass into E RI by mid to late morning. IFR CIGS may push into the mid and outer Cape to KACK by midday. Mainly VFR central/W areas. Low risk for light rain to develop late in the day Cape/Islands. N-NE wind gusts 25-30 kt developing in the afternoon across the Cape/Islands.

Tonight . Moderate confidence. MVFR cigs eastern MA/RI with localized IFR outer Cape/KACK. Mainly VFR to the west. Occasional light rain developing over the Cape/Islands and possibly spreading across eastern MA overnight. N wind gusts to 35 kt over ACK and outer Cape with 25 kt gusts developing along the coast.

Thursday . Moderate confidence. MVFR with occasional rain developing eastern MA/RI gradually spreading west and possibly reaching CT valley by late afternoon. Areas of IFR Cape/Islands. N wind gusts 35-40 kt outer Cape/ACK with 25 kt gusts elsewhere.

KBOS Terminal . High confidence in trends, but lower confidence on exact timing. MVFR cigs developing 12-14z.

KBDL Terminal . High confidence.

Outlook /Thursday Night through Sunday/ .

Thursday Night: Mainly MVFR, with local IFR possible. Strong winds with local gusts up to 40 kt. RA likely, patchy BR.

Friday: Mainly MVFR, with local IFR possible. Strong winds with local gusts up to 40 kt. Chance SHRA, patchy BR.

Friday Night: MVFR/IFR conditions possible. Windy with gusts up to 35 kt. Slight chance SHRA, patchy BR.

Saturday: Mainly VFR, with areas MVFR possible. Windy with local gusts up to 30 kt.

Saturday Night: VFR.

Sunday: Mainly VFR, with local MVFR possible.

MARINE.

Gale warnings issued for eastern MA waters as strong ocean storm to the south results in a strengthening low level jet. N wind gusts to 35-40 kt develop tonight and continue into Fri. SCA for south coastal waters west of Cape Cod with gusts mainly below 35 kt. Rain developing tonight over eastern MA waters and moving west through Thu. Some vsby restrictions likely.

Outlook /Thursday Night through Sunday/ .

Thursday Night: Moderate risk for gale force winds with gusts up to 40 kt. Rough seas up to 21 ft. Rain likely, patchy fog. Local visibility 1 to 3 nm.

Friday: Moderate risk for gale force winds with gusts up to 40 kt. Rough seas up to 22 ft. Chance of rain showers, patchy fog.

Friday Night: Low risk for gale force winds with gusts up to 40 kt. Rough seas up to 20 ft. Chance of rain showers, patchy fog.

Saturday: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Rough seas up to 16 ft.

Saturday Night: Winds less than 25 kt. Rough seas up to 13 ft.

Sunday: Winds less than 25 kt. Rough seas up to 10 ft.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . None. RI . None. MARINE . Gale Warning from 1 AM Thursday to 8 PM EDT Friday for ANZ231- 232-250. Small Craft Advisory from 11 AM this morning to 8 AM EDT Friday for ANZ233>235-237. Small Craft Advisory from 1 AM Thursday to 8 AM EDT Friday for ANZ230-236. Small Craft Advisory until 8 PM EDT Thursday for ANZ251-256. Gale Warning from 7 PM this evening to 8 PM EDT Friday for ANZ254-255.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BHBM3 - 8443970 - Boston, MA 6 mi63 min 35°F 43°F1010 hPa
44013 - BOSTON 16 NM East of Boston, MA 20 mi55 min NE 18 G 21 39°F 43°F5 ft1009.7 hPa (-2.1)35°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 24 mi101 min E 16 G 18 38°F 42°F6 ft1009.2 hPa
IOSN3 - Isle of Shoals, NH 42 mi45 min NNE 20 G 24 37°F 1011.2 hPa (-1.1)28°F
44073 47 mi101 min NE 18 G 19 39°F 41°F
FOXR1 - 8454000 - Providence, RI 48 mi63 min NE 4.1 G 8 34°F 43°F1010.7 hPa
44018 - SE Cape Cod 30NM East of Nantucket, MA 49 mi55 min NNE 19 G 23 37°F 6 ft1009.5 hPa (-2.1)31°F
PVDR1 49 mi57 min N 7 G 11 34°F 1010.8 hPa29°F

Wind History for Providence, RI
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boston, Logan International Airport, MA4 mi51 minN 910.00 miMostly Cloudy32°F28°F85%1011.1 hPa
Beverly, Beverly Municipal Airport, MA11 mi52 minN 62.00 miLight Snow Fog/Mist33°F30°F89%1011 hPa
Laurence G Hanscom Field Airport, MA15 mi54 minN 510.00 miFair29°F25°F85%1012.7 hPa
East Milton, MA17 mi54 minN 9 mi29°F27°F92%1011 hPa
Norwood, Norwood Memorial Airport, MA19 mi52 minNW 410.00 miFair31°F26°F82%1010.8 hPa
Lawrence Municipal Airport, MA21 mi51 minNNE 710.00 miOvercast30°F27°F88%1012.5 hPa

Link to 5 minute data for KBOS

Wind History from BOS (wind in knots)
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Last 24hrN12N12
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N12NE14NE13NE11E14E14E11E10E10E10--E9NE6N3NW4NW6N7NW7NW8N8N10N9
1 day agoNE14NE12NE15NE14NE16NE11NE13NE15NE13NE15NE11NE12NE14
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2 days ago--E13E12E19E12SE7E18E18E17E18E17E17E16E14NE14
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N15N13N14N13NE12

Tide / Current Tables for Lynn Harbor, Massachusetts
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Lynn Harbor
Click for Map
Wed -- 02:21 AM EDT     Moonset
Wed -- 05:35 AM EDT     8.98 feet High Tide
Wed -- 06:21 AM EDT     First Quarter
Wed -- 06:25 AM EDT     Sunrise
Wed -- 11:34 AM EDT     Moonrise
Wed -- 12:03 PM EDT     0.94 feet Low Tide
Wed -- 06:21 PM EDT     7.93 feet High Tide
Wed -- 07:10 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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23.24.96.57.98.88.986.44.62.91.60.91.52.84.35.87.17.97.76.85.33.92.6

Tide / Current Tables for Boston Harbor, Massachusetts Current
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Boston Harbor
Click for Map
Wed -- 01:35 AM EDT     1.15 knots Max Flood
Wed -- 02:20 AM EDT     Moonset
Wed -- 05:07 AM EDT     -0.00 knots Slack
Wed -- 06:21 AM EDT     First Quarter
Wed -- 06:25 AM EDT     Sunrise
Wed -- 08:13 AM EDT     -1.01 knots Max Ebb
Wed -- 11:34 AM EDT     Moonrise
Wed -- 12:09 PM EDT     0.00 knots Slack
Wed -- 02:08 PM EDT     1.06 knots Max Flood
Wed -- 05:43 PM EDT     -0.00 knots Slack
Wed -- 07:10 PM EDT     Sunset
Wed -- 08:41 PM EDT     -0.84 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.411.10.90.60.1-0.5-0.9-1-1-0.8-0.7-0.10.71.110.80.4-0.2-0.6-0.8-0.8-0.7-0.6

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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Wind Forecast for Boston, MA (7,2,3,4)
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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.