Tuesday, July14, 2020
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Marine Weather and Tides
Salisbury, 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 5:16AMSunset 8:22PM Tuesday July 14, 2020 6:31 PM EDT (22:31 UTC) Moonrise 12:58AMMoonset 2:40PM Illumination 29% Phase: Waning Crescent; Moon at 24 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- 416 Pm Edt Tue Jul 14 2020
Tonight..N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers. A slight chance of tstms this evening.
Wed..NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas around 4 ft.
Wed night..NE winds 5 to 10 kt. Seas 3 to 4 ft.
Thu..E winds 5 to 10 kt. Seas around 2 ft.
Thu night..S winds 5 to 10 kt. Seas around 2 ft.
Fri..S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft.
Fri night..SW winds 5 to 10 kt. Seas around 3 ft.
Sat..SW winds 5 to 10 kt. Seas around 2 ft.
Sat night..SW winds 5 to 10 kt. Seas around 2 ft.
Sun..SW winds 5 to 10 kt. Seas 2 to 3 ft.
Sun night..SW winds around 10 kt. Seas around 3 ft. Winds and seas higher in and near tstms. 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 416 Pm Edt Tue Jul 14 2020
Synopsis for massachusetts and rhode island coastal waters.. A ridge of high pressure extending south from maine will settle over the waters for Wednesday and Thursday. This ridge of high pressure will slip east of the waters for Friday. A weak front will move over the waters for Saturday. This front will stall near the coast and weaken on Saturday. Another cold front will move over the waters Monday into Tuesday. 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 Salisbury, MA
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location: 42.81, -70.81     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 141855 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 255 PM EDT Tue Jul 14 2020

SYNOPSIS. A few severe thunderstorms are possible through this evening, with the main threats being damaging wind gusts, hail, and flash flooding. High pressure will build over the region Wednesday and Thursday with dry and cooler weather, but clouds will linger. A warm front will bring scattered showers and storms Friday, before warmer and more humid weather returns this weekend. A cold front should bring more showers and storms early next week.

NEAR TERM /THROUGH TONIGHT/. 3 PM Update:

Radar indicates storms are starting to focus across RI and SE MA with a few more storms developing across NE MA. Seeing a lot of storm blowoff on satellite across much of eastern MA which may inhibit further storm development aside from RI, despite presence of 1000-1500 J/kg of mixed layer CAPE, 20-30kt of effective shear and mid level lapse rates near 6.5C/km. Need to keep a close eye on any storms that develop in SE MA for greatest severe potential, as that is the area where all 3 conditions overlap, but presence of higher cloud cover may put a lid on that.

Storms should gradually diminish this evening but cold pool aloft may help storms maintain themselves past sunset. High pressure builds north of region tonight which will result in NE flow and bring in plenty of low level moisture, enough to maintain cloudy skies overnight. Somewhat drier air (lower dewpoints) should prevent much in way of fog formation.

Lows will fall back into upper 50s to mid 60s by daybreak.

SHORT TERM /WEDNESDAY THROUGH WEDNESDAY NIGHT/. Continued NE flow will bring drier and cooler weather with highs in 70s to around 80 and overnight lows in 50s to lower 60s. Dewpoints are expected to drop into 50s and lower 60s so we will lose tropical humidity that we've dealt with past few days.

That said, model forecast soundings show plenty of low level moisture trapped beneath subsidence inversion. That means cloudiness will be tough to erode, resulting in cloudy skies with some breaks of sun, especially across CT and western MA. Additionally, there may be a few sprinkles near Berkshires due to upslope flow.

LONG TERM /THURSDAY THROUGH TUESDAY/. Highlights .

* Showers/storms Friday * Turning warmer/more humid over weekend * Showers/storms again Monday-Tuesday

On larger scale, northern stream begins to retreat over weekend as we come more under influence of broad upper ridge building over southern 2/3 of country. Models suggest we remain on northern periphery of ridge, which may very well keep more oppressive heat/humidity to our south over weekend and early next week, but odds favor summertime heat and humidity returning to SNE over weekend and early next week.

Pattern suggests a few chances of showers/storms - first Friday as warm front lifts through region, and second in Monday/Tuesday timeframe as pre-frontal trough is expected to cross area in advance of cold front which should still hang back across eastern Great Lakes.

AVIATION /19Z TUESDAY THROUGH SUNDAY/. Forecaster Confidence Levels .

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

18z TAF Update: Moderate confidence.

Scattered showers/storms will bring local MVFR/IFR conditions. Focus should shift from CT Valley to central/eastern MA and RI later this afternoon. Meanwhile, IFR ceilings near Cape Cod and Islands should lift by mid afternoon, resulting in VFR conditions.

MVFR/IFR ceilings prevail tonight and will be slow to erode Wed but expect gradual improvement to MVFR and lower-end VFR ceilings Wed afternoon and Wed night.

KBOS Terminal . Moderate confidence in TAF, mainly due to uncertainty with location of TS. Main time frame should be 19Z-23Z but per coordination with CWSU ZBW, leaving out mention due to low probability.

KBDL Terminal . High confidence in TAF.

Outlook /Thursday through Sunday/ .

Wednesday Night through Thursday: Mainly VFR, with local MVFR possible.

Thursday Night: VFR. Breezy. Slight chance SHRA.

Friday: Mainly VFR, with local MVFR possible. Breezy. Chance SHRA, chance TSRA.

Friday Night: Mainly VFR, with local MVFR possible. Slight chance SHRA, slight chance TSRA.

Saturday and Sunday: VFR.

MARINE. Small Craft Advisories will be allowed to expire this evening on open south coastal waters where seas will subside, but issued another one for eastern MA waters tonight and Wed as increasing NE winds (below 25kt) bring building seas of up to 6 ft as high pressure builds north of region. NE winds diminish Wed night, allowing seas to subside once again.

Scattered storms will affect south coastal waters through this evening, some of which may produce hail and 30-40kt wind gusts, especially near shore. Dry weather expected Wed into Thu.

Outlook /Thursday through Sunday/ .

Thursday through Thursday Night: Winds less than 25 kt.

Friday: Winds less than 25 kt. Chance of thunderstorms, slight chance of rain showers.

Friday Night: Winds less than 25 kt. Seas locally approaching 5 ft. Chance of rain showers, chance of thunderstorms.

Saturday and Sunday: Winds less than 25 kt.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . High Surf Advisory until 8 PM EDT this evening for MAZ023-024. RI . High Surf Advisory until 8 PM EDT this evening for RIZ008. MARINE . Small Craft Advisory from 9 PM this evening to 6 PM EDT Wednesday for ANZ250-254. Small Craft Advisory until 8 PM EDT this evening for ANZ255- 256.



JWD


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
IOSN3 - Isle of Shoals, NH 15 mi32 min ENE 21 G 22 66°F 1014.9 hPa (+1.3)66°F
BGXN3 - Great Bay Reserve, NH 17 mi107 min E 7 74°F 1015 hPa66°F
44073 20 mi148 min NE 14 G 16 69°F 68°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 24 mi88 min ENE 19 G 21 66°F 3 ft1012.3 hPa
44013 - BOSTON 16 NM East of Boston, MA 33 mi42 min NE 18 G 21 67°F 69°F3 ft1013.4 hPa (+0.8)67°F
44030 - Buoy B0102 - Western Maine Shelf 33 mi88 min ENE 14 G 16 3 ft1021.8 hPa
44098 - Jeffrey's Ledge, NH (160) 34 mi27 min 67°F5 ft
BHBM3 - 8443970 - Boston, MA 34 mi50 min 67°F
WELM1 - 8419317 - Wells, ME 38 mi44 min 64°F
WEXM1 - Wells Reserve, ME 39 mi92 min ENE 7 68°F 64°F

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lawrence Municipal Airport, MA17 mi38 minENE 610.00 miOvercast67°F64°F91%1016.3 hPa
Beverly, Beverly Municipal Airport, MA17 mi39 minNE 910.00 miOvercast67°F64°F91%1014.9 hPa
Pease Air Force Base / Portsmouth, NH19 mi36 minE 1210.00 miMostly Cloudy70°F61°F74%1015.6 hPa

Link to 5 minute data for KBVY

Wind History from BVY (wind in knots)
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Last 24hrCalmNW7CalmSE4N8CalmCalmCalmN5N3N5CalmN5N4N12N10N9NE66N9N7NE10NE11NE9
1 day agoW11W8SW5SW7SW10SW9SW5SW3SW3CalmCalmCalmCalmCalmCalmSW5CalmS4SE8SE11SW9
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Tide / Current Tables for Merrimack River Entrance, Massachusetts
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Merrimack River Entrance
Click for Map
Tue -- 12:57 AM EDT     Moonrise
Tue -- 01:05 AM EDT     1.37 feet Low Tide
Tue -- 05:17 AM EDT     Sunrise
Tue -- 07:09 AM EDT     7.14 feet High Tide
Tue -- 01:19 PM EDT     1.50 feet Low Tide
Tue -- 02:40 PM EDT     Moonset
Tue -- 07:32 PM EDT     7.71 feet High Tide
Tue -- 08:20 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.81.41.72.74.25.76.77.16.96.14.73.32.11.51.72.53.95.66.97.67.675.74.1

Tide / Current Tables for Newburyport (Merrimack River), Massachusetts Current
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Newburyport (Merrimack River)
Click for Map
Tue -- 12:57 AM EDT     Moonrise
Tue -- 02:00 AM EDT     0.00 knots Slack
Tue -- 05:18 AM EDT     Sunrise
Tue -- 05:45 AM EDT     1.29 knots Max Flood
Tue -- 07:57 AM EDT     -0.00 knots Slack
Tue -- 10:18 AM EDT     -0.88 knots Max Ebb
Tue -- 02:14 PM EDT     0.00 knots Slack
Tue -- 02:41 PM EDT     Moonset
Tue -- 06:07 PM EDT     1.36 knots Max Flood
Tue -- 08:20 PM EDT     Sunset
Tue -- 08:21 PM EDT     -0.00 knots Slack
Tue -- 10:49 PM EDT     -0.98 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.9-0.7-00.60.81.11.30.8-0-0.6-0.9-0.8-0.8-0.7-0.20.50.91.11.41.10.3-0.4-0.9-1

Weather Map
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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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Boston, MA (18,4,5,8)
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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.