Friday, January24, 2020
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Marine Weather and Tides
Weymouth Town, 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 7:02AMSunset 4:48PM Friday January 24, 2020 8:46 PM EST (01:46 UTC) Moonrise 8:06AMMoonset 5:34PM Illumination 0% Phase: New Moon; Moon at 29 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- 717 Pm Est Fri Jan 24 2020
.small craft advisory in effect from Saturday afternoon through late Saturday night...
Tonight..E winds 5 to 10 kt. Waves 1 foot or less.
Sat..E winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. A chance of showers.
Sat night..E winds 15 to 20 kt, becoming S 10 to 15 kt after midnight. Gusts up to 30 kt. Waves 2 to 3 ft, except 4 to 7 ft at the outer harbor entrance. Patchy fog. Showers. Vsby 1 nm or less.
Sun..SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves around 2 ft, except 4 to 6 ft at the outer harbor entrance.
Sun night through Mon night..NW winds 10 to 15 kt. Waves around 2 ft.
Tue through Wed night..N winds 5 to 10 kt. Waves 1 foot or less, except 2 to 4 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 717 Pm Est Fri Jan 24 2020
Synopsis for massachusetts and rhode island coastal waters.. High pres builds over the maritimes through tonight. Low pres will move ne from the mid atlc region Sat, tracking across southern new eng Sat night then into maine on Sun. The low pres will move into the maritimes Mon into Tue. 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 Weymouth Town, MA
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location: 42.24, -70.96     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 250013 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 713 PM EST Fri Jan 24 2020

SYNOPSIS.

High pressure over the Maritimes brings dry weather to New England tonight and Saturday morning. Low pressure over the Midwest redevelops over the Mid Atlantic states. This will bring a period of heavy rain and gusty coastal winds late Saturday and Saturday night as it tracks across interior southern New England. It may be preceded by some light freezing drizzle over the Berkshires. Mainly dry and mild conditions return Sunday then dry and seasonable for much of next week.

NEAR TERM /UNTIL 6 AM SATURDAY MORNING/.

7 PM Update .

Increased sky cover as ocean stratus has advected in due to the northeasterly flow within the lower levels. In addition, there may be some fog development across the higher elevations of the interior late tonight along with patchy drizzle/freezing drizzle due to the increasing easterly flow.

Rest of the forecast remains on track.

Previous discussion .

High pressure centered over the Maritimes brings a northeast surface flow over Southern New England. Satellite imagery shows low clouds over the Gulf of Maine just south of the Maine coast. These clouds are moving west and have run into the coast near Portsmouth NH. Increasing east flow will encourage cloud growth south over Southern New England. Upslope areas could see some patchy drizzle or freezing drizzle, but most areas will remain dry.

Temperatures will fall to near dew point, so expect min temp range in the mid 20s west to mid 30s southeast.

SHORT TERM /6 AM SATURDAY MORNING THROUGH SATURDAY NIGHT/.

Closed upper low over the Great Lakes with a 100-kt southern jet feeding in. This will generate a secondary low during the night that moves up over our area late Saturday and Saturday night. Low level wind forecasts show a 50-60 kt low level jet moving up over New York City early afternoon and along the South Coast of New England late afternoon and early night.

The combination of these two jets will generate strong lift over Southern New England during the late afternoon and early night. This will generate rain from mid afternoon through around midnight. PW values of 0.75 to 1.0 inches suggest some heavy showers. The PW values are above normal for January, but the system is moving fast enough to limit any flooding threat to urban/poor drainage concerns. The rain tapers off a little before midnight in the west and a little after midnight in the east.

That low level jet moves over the region early Saturday night. The low level inversion will limit the amount of wind to reach the surface, but gusts of 25-35 kt should be possible especially along the South Coast and Islands. Winds will diminish after midnight as the system moves past.

A 1 to 2 ft surge is expected along the south coast around the high tide Sat evening as the low level jet is moving through. Astronomical tides are rather low and no coastal flooding is expected.

LONG TERM /SUNDAY THROUGH FRIDAY/.

Highlights .

* Temperatures slowly trending downward through the extended.

* Dry and quiet through the extended. The only exception is across the eastern slopes of the Berkshires Sunday into late on Monday where light scattered rain and snow showers are possible.

Details .

Sunday AM through Tuesday AM .

Initially a cutoff low will be situated over the eastern Great Lakes. The cutoff will gradually rotate northeastward into northern New England by Sunday evening. Expect -5 to -8 degree Celsius westerly cold air to advect in. Will see a mixture of sunshine and clouds across the region on Sunday. There are chances of light rain and snow showers across the eastern slopes of the Berkshires. Little to no snowfall accumulation is anticipated. Temperatures will be slightly warmer when compared to Saturday. Readings range from the mid 30s across the Berkshires to the mid to upper 40s along the coast.

The cutoff low will rotate across northern New England on Monday. A shortwave will rotate from the eastern Great Lakes late on Sunday through southern New England on Monday. Winds will shift to the northwest and continue advecting cold air into the region. Increased cloud cover a bit compared to the previous forecast. There will be chances of snow showers across the eastern slopes of the Berkshires. Suspect that these chances could linger further east as suggested by several GEFS members, especially during the day time. The combination of the shortwave sliding through, cold air advection and diurnal heating could bring scattered shower activity. Confidence is low to moderate at this point in time, so have kept things dry at this point in time. Temperatures on Monday range from the low 30s across the Berkshires to the low to mid 40s along the coast.

Tuesday through Friday .

Confidence in the forecast significantly lowers Tuesday until the end of the long term. Model guidance is all over the place with several shortwaves sliding through with large differences between individual models and run to run differences. At this point in time it appears that we will remain dry, but under cyclonic flow aloft. Temperatures should continue trending downward as colder air advects in.

Next shot for precipitation is late in the week and heading into the weekend. High temperatures cool to the 30s by the end of the extended. Low temperatures cool to the teens and 20s above zero.

AVIATION /00Z SATURDAY THROUGH WEDNESDAY/.

Forecaster Confidence Levels .

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

Short Term /through Saturday Night/ .

Tonight . Moderate confidence. MVFR ceilings continue to spread in from the ocean and NH due to increasing easterly flow. This primarily impact BOS, BED and ORH over the next 6 hours. Will see ceilings lower to IFR at ORH along with fog development, but am not confident on visibilities at this point in time. BOS will particularly be tricky as the HRRR and GLAMP keep the terminal on the edge of MVFR/VFR. Leaned toward VFR from roughly 06Z until 14Z based on the latest HRRR. Other terminals will see ceilings lower to MVFR closer to 12Z.

Saturday and Saturday night . Moderate to high confidence. Widespread MVFR with IFR conditions. Still expect patchy fog with drizzle or higher elevation freezing drizzle in the morning. Best opportunity for IFR/LIFR is when the heavier precipitation moves in. Heaviest precipitation timeframe looks like 21Z to 06Z at this point. East winds gust 25 to 35 knots over Cape Cod and the Islands during the afternoon and into the evening. Rain tapering off close to midnight in the CT River Valley and eastern coastal MA after midnight. Precipitation becoming lighter after midnight.

KBOS Terminal . Low to moderate confidence until 12Z. On the fence between MVFR/VFR conditions due to ocean stratus. Moderate confidence after 12Z with MVFR/IFR ceilings expected.

KBDL Terminal . Moderate to high confidence until 12Z. Moderate confidence after 12Z. MVFR/IFR conditions spreading in. Potential for LIFR as heavier precipitation moves in late in the afternoon.

Outlook /Sunday through Monday/ .

Sunday through Monday: Mainly VFR, with local MVFR possible. Breezy.

Monday Night through Tuesday: VFR. Breezy.

MARINE.

Short Term /through Saturday Night/ . High confidence.

Northeast wind around 10 kt tonight will increase to 20-25 kt by late Saturday and early Saturday night. Wind gusts will be 30-40 kt at that time. Strongest gusts will be on the eastern MA waters. Winds then diminish after midnight as the weather system moves past. Winds at that time will shift out of the southwest.

Gale Watch continues on the waters east of Massachusetts for Saturday and Saturday night. Small Craft Advisory continues on all other waters through Sunday.

Outlook /Sunday through Wednesday/ .

Sunday: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Rough seas up to 11 ft.

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

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

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

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

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . None. RI . None. MARINE . Small Craft Advisory from noon Saturday to 7 PM EST Sunday for ANZ232. Small Craft Advisory from noon Saturday to 1 AM EST Sunday for ANZ233-234. Small Craft Advisory from 3 PM Saturday to 5 AM EST Sunday for ANZ230. Gale Watch from Saturday evening through late Saturday night for ANZ231-251. Small Craft Advisory from noon Saturday to 11 AM EST Sunday for ANZ236. Small Craft Advisory from 7 AM Saturday to 7 PM EST Sunday for ANZ235-237. Gale Watch from Saturday evening through late Saturday night for ANZ250-254. Small Craft Advisory from 4 AM Saturday to 7 PM EST Sunday for ANZ255-256.

SYNOPSIS . WTB NEAR TERM . WTB/BL SHORT TERM . WTB LONG TERM . BL AVIATION . WTB/BL MARINE . WTB/BL


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BHBM3 - 8443970 - Boston, MA 9 mi47 min 40°F 38°F1028.4 hPa (+0.0)
44013 - BOSTON 16 NM East of Boston, MA 18 mi57 min ENE 7.8 G 9.7 42°F 43°F3 ft1028.7 hPa (+0.0)40°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 29 mi103 min E 7.8 G 9.7 42°F 42°F4 ft1027.7 hPa
FOXR1 - 8454000 - Providence, RI 38 mi47 min 39°F 39°F1029 hPa (+0.4)
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 39 mi47 min 39°F 1028.9 hPa (+0.5)
FRVM3 - 8447386 - Fall River, MA 39 mi53 min 38°F 39°F1029 hPa
FRXM3 39 mi53 min 38°F 35°F
PVDR1 39 mi47 min 38°F 1029.1 hPa (+0.4)35°F
CPTR1 - 8452944 - Conimicut Light, RI 42 mi53 min 37°F 39°F
44018 - SE Cape Cod 30NM East of Nantucket, MA 43 mi57 min E 9.7 G 16 42°F 3 ft1029.3 hPa (+0.4)33°F
44090 43 mi17 min 40°F1 ft
NAXR1 - Narragansett Bay Reserve, RI 46 mi62 min NE 6 35°F 1029 hPa33°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 46 mi47 min 38°F 1029.3 hPa (+0.6)
PRUR1 48 mi47 min 39°F 36°F

Wind History for Providence, RI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
East Milton, MA8 mi56 minNE 9 mi35°F34°F96%1029.7 hPa
Boston, Logan International Airport, MA10 mi53 minNNE 88.00 miMostly Cloudy38°F32°F79%1029.3 hPa
Norwood, Norwood Memorial Airport, MA12 mi54 minN 06.00 miPartly Cloudy with Haze31°F26°F82%1029.4 hPa
Marshfield Airport, MA18 mi72 minENE 57.00 miMostly Cloudy37°F37°F100%1029.1 hPa
Beverly, Beverly Municipal Airport, MA24 mi54 minN 37.00 miMostly Cloudy35°F32°F89%1029.2 hPa
Laurence G Hanscom Field Airport, MA24 mi56 minN 010.00 miMostly Cloudy36°F32°F86%1030.9 hPa
Taunton, Taunton Municipal Airport, MA24 mi55 minN 010.00 miA Few Clouds27°F23°F85%1029 hPa

Link to 5 minute data for KMQE

Wind History from MQE (wind in knots)
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Last 24hrW9SW7W7W9W9NW9NW10N10N10NE9NE9N9N6N66NE7NE8E8NE10
G17
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1 day agoSW7S8S9SW12W9W8SW10SW11SW11S11SW13SW12SW11SW10SW9SW10
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W7SW8SW8--SW12SW9SW9W11
2 days agoW5NW6W6W7W6W6W8W6NW6NW5NW6NW8NW6CalmCalm36W6W54SW4W7S5S8

Tide / Current Tables for Weymouth Fore River Bridge, Massachusetts
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Weymouth Fore River Bridge
Click for Map
Fri -- 04:29 AM EST     0.62 feet Low Tide
Fri -- 07:04 AM EST     Sunrise
Fri -- 07:05 AM EST     Moonrise
Fri -- 10:50 AM EST     10.62 feet High Tide
Fri -- 04:33 PM EST     Moonset
Fri -- 04:44 PM EST     New Moon
Fri -- 04:47 PM EST     Sunset
Fri -- 05:11 PM EST     -0.46 feet Low Tide
Fri -- 11:29 PM EST     9.21 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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8.46.84.62.30.80.81.93.86.28.610.210.69.98.25.830.6-0.4-0.11.33.35.87.99.1

Tide / Current Tables for Boston Harbor, Massachusetts Current
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Boston Harbor
Click for Map
Fri -- 02:13 AM EST     -1.28 knots Max Ebb
Fri -- 04:19 AM EST     0.00 knots Slack
Fri -- 07:05 AM EST     Sunrise
Fri -- 07:05 AM EST     Moonrise
Fri -- 07:40 AM EST     1.23 knots Max Flood
Fri -- 10:21 AM EST     -0.00 knots Slack
Fri -- 02:35 PM EST     -1.45 knots Max Ebb
Fri -- 04:33 PM EST     Moonset
Fri -- 04:44 PM EST     New Moon
Fri -- 04:47 PM EST     Sunset
Fri -- 04:50 PM EST     0.00 knots Slack
Fri -- 08:10 PM EST     1.26 knots Max Flood
Fri -- 10:58 PM EST     -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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-0.8-1.1-1.3-1.1-0.30.50.91.21.20.80.2-0.3-0.8-1.1-1.4-1.4-0.80.10.81.11.31.10.5-0

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Boston, MA (20,4,5,8)
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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.