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Marine Weather and Tides
Version 3.4 |
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen |
| Sunrise 6:00AM | Sunset 7:30PM | Monday August 26, 2019 3:17 AM EDT (07:17 UTC) | Moonrise 1:19AM | Moonset 4:53PM | Illumination 19% |  |
ANZ251 Massachusetts Bay And Ipswich Bay- 116 Am Edt Mon Aug 26 2019
Rest of tonight..NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft.
Mon..NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 3 to 5 ft.
Mon night..E winds 5 to 10 kt, becoming sw after midnight. Seas 3 to 5 ft.
Tue..W winds around 5 kt, becoming S in the afternoon. Seas 3 to 5 ft. Patchy dense fog. Vsby 1 nm or less.
Tue night..S winds 5 to 10 kt. Seas 2 to 4 ft.
Wed..SE winds 5 to 10 kt. Seas 2 to 3 ft.
Wed night..E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 nm.
Thu..NE winds around 5 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 nm.
Thu through Fri..SW winds 5 to 10 kt. Seas 2 to 3 ft. 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.
Rest of tonight..NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft.
Mon..NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 3 to 5 ft.
Mon night..E winds 5 to 10 kt, becoming sw after midnight. Seas 3 to 5 ft.
Tue..W winds around 5 kt, becoming S in the afternoon. Seas 3 to 5 ft. Patchy dense fog. Vsby 1 nm or less.
Tue night..S winds 5 to 10 kt. Seas 2 to 4 ft.
Wed..SE winds 5 to 10 kt. Seas 2 to 3 ft.
Wed night..E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 nm.
Thu..NE winds around 5 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 nm.
Thu through Fri..SW winds 5 to 10 kt. Seas 2 to 3 ft. 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 Am Edt Mon Aug 26 2019
Synopsis for massachusetts and rhode island coastal waters.. Northeast winds will be gradually shifting to the east by midweek. A tropical depression may form off the coast of florida early next week. This system may track close enough to affect the coastal waters with elevated seas by mid week. A cold front will approach the waters from the west on Thursday. 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.
Synopsis for massachusetts and rhode island coastal waters.. Northeast winds will be gradually shifting to the east by midweek. A tropical depression may form off the coast of florida early next week. This system may track close enough to affect the coastal waters with elevated seas by mid week. A cold front will approach the waters from the west on Thursday. 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
Hourly EDIT Helplocation: 42.81, -70.81 debug
Area Discussion for - Boston, MA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kbox 260550 afdbox area forecast discussion national weather service boston norton ma 150 am edt Mon aug 26 2019 Synopsis Patchy low clouds over ri and SE mass will diminish this morning. High pressure over the maritimes will build over southern new england today and maintain dry pleasant weather through Tuesday. Possible showers Wednesday and Thursday ahead of a cold front. Still keeping an eye on the track of a potential tropical system offshore late this week, which could produce high surf and dangerous rip currents along the immediate shoreline. Near term until 6 am this morning Satellite imagery... Nighttime microphysics and shortwave ir... Shows low clouds moving slowly southwest across SE mass and ri. These will continue to move across this area overnight, spreading for a time into northeast ct as well. A few sprinkles drizzle possibly in this area, but mainly dry conditions. A few changes were made to sky cover forecast to expand this area through 2 am. Clear and dry conditions across the remainder of southern new england overnight. Observed temperatures at 9 pm were in the mid 50s to mid 60s. Expect further cooling overnight, with overnight mins in the mid 40s through the 50s. This is in line with the existing forecast, so no changes planned to the forecast. Short term 6 am this morning through 6 pm Tuesday 2 pm update... Monday... looking to clear out. A continued long fetch off across the gulf of me, two things: 1.) sea-surface temperatures have lowered a bit with the turbidity and upwelling of the waters, and 2.) dry air advection will be quite strong and deeper within the column compared to today and sinking. So an expectation that low clouds will linger across new england during the morning hours, gradually dissipating S W with drier, subsiding pushing s. But not ruling out scattered to broken cloud decks given boundary layer mixing of onshore cool, moist air. Expect cloudy issues to linger especially s-coastal new england but lesser drizzle issues. Late summer Sun still strong while mixing out to h85 undergoing cold air advection, around +8c, another day of 70s throughout the interior while 60s along the E se shore. Monday night... becoming clear. Daytime heating concludes, dry air and high pressure in place, looking at the boundary layer to decouple and light winds to prevail over most of S new england albeit the southeast. Warm air advection aloft, moisture is trapped beneath the dry inversion just above the surface. Dense fog not out of the question especially in areas of onshore flow and or higher dewpoints (notably earlier in the day with the cross-over threshold). Lean with cooler guidance and evaluate fog based on winds (below 3 mph) along with temperature- dewpoint thresholds of 2 degrees or less. This as a first guess, fog seemingly will be more prevalent. Long term Tuesday night through Sunday Highlights... * temperatures will remain below normal Tuesday, then will moderate to near and above normal by late this week * scattered showers will move across our region sometime late Wednesday into Thursday ahead of a cold front. Details... Tuesday... high pressure will remain across the region, or at least close by. Dry weather and below normal temperatures expected to continue. Onshore winds will keep the immediate coastal areas even cooler. Wednesday through Friday... the biggest question remaining to be answered will be how close a potential tropical system comes to southern new england during this time. Latest model guidance has trended ever so slightly west, but still well within the margin of error for a forecast this far out. Still expecting a cold front to slowly approach from the west late Wednesday into Thursday. At this point, expecting scattered showers with the cold front. Instability is too poor to warrant a mention of thunderstorms in the forecast. Rainfall chances would be significantly higher if the ocean low pressure comes even closer to our region. Time will tell. The most likely impact from this coastal system would be a period of rough surf along ocean-exposed beaches. There may be another front that might approach late this week, but timing is very much in question. Near to above normal temperatures should prevail during this period. Saturday and Sunday... high pressure should be in control. Current forecast is for dry weather. Above normal temperatures Saturday, with below normal temperatures Sunday as this high pressure moves in. Aviation 06z Monday through Friday Forecaster confidence levels... low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. |
Short term through Tuesday ... High confidence. Rest of tonight... MVFR ceilings over ri and SE mass as an area of clouds drifts southwest across that area. Expect these clouds to diminish overnight. Patchy ifr fg possible where skc prevails in the ct river valley of ma as well as a few regular fog spots.VFR clear across the remainder of southern new england. Today... any remaining MVFR ceilings over ri should dissipate this morning. Similarly, any patchy fog from overnight should dissipate after sunrise. High pressure over new brunswick will maintain east-northeast winds today with strongest winds gusting 20 to 25 kt across the south coast and islands. The high will build south over our area late today, diminishing the wind. Tonight... high pressure over the region will bring clear skies and light wind. Radiational cooling will bring areas of fog, especially over the ct river valley in mass. And in the regular fog spots of SRN new england. Ifr CIGS vsbys in any fog. Tuesday... high pressure continues to bring mostly clear skies and light wind. Thin cirrus will move in from the west, most likely over ct and western ma. Kbos terminal... expect few025 through mid morning as fragments move up from the marine clouds across SE massachusetts. OtherwiseVFR clear with a continued east-northeast wind up to 10 kt. Kbdl terminal... lingering 2500 ft bases should remain south east of kbdl this morning before dissipating.VFR clear with a light ene wind. Outlook Tuesday night through Friday ... Moderate confidence. Tuesday night:VFR. Wednesday: mainlyVFR, with local MVFR possible. Chance shra. Wednesday night: mainlyVFR, with local ifr possible. Chance shra. Thursday: mainlyVFR, with local MVFR possible. Chance shra. Thursday night through Friday:VFR. Marine Forecaster confidence levels... low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. Short term through Tuesday ... High confidence. E NE winds persist through Tuesday morning. That will contribute to an E swell and wave heights around 4 to 6 feet. Strong gusts will taper slightly overnight, and then pick back up Monday with gusts up to 25 kts. As high pressure builds from the n into midweek, will see both winds and seas begin to subside. Small craft advisory headlines continue for a majority of the waters. Outlook Tuesday night through Friday ... Moderate confidence. Tuesday: winds less than 25 kt. Seas up to 5 ft. Tuesday night: winds less than 25 kt. Areas of seas approaching 5 ft. Wednesday: winds less than 25 kt. Areas of seas approaching 5 ft. Chance of rain showers. Wednesday night: winds less than 25 kt. Areas of seas approaching 5 ft. Chance of rain showers. Local visibility 1 to 3 nm. Thursday: winds less than 25 kt. Areas of seas approaching 5 ft. Chance of rain showers. Thursday night through Friday: winds less than 25 kt. Seas locally approaching 5 ft. Box watches warnings advisories Ct... None. Ma... None. Ri... None. Marine... Small craft advisory until 11 am edt this morning for anz232>234. Small craft advisory until 5 am edt early this morning for anz235-237. Small craft advisory until 8 pm edt this evening for anz250- 254. Small craft advisory until 6 am edt Tuesday for anz255-256. Synopsis... Belk sipprell near term... Wtb sipprell short term... Sipprell long term... Belk aviation... Wtb belk marine... Wtb belk sipprell |
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a map| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
| IOSN3 - Isle of Shoals, NH | 15 mi | 78 min | NNE 13 G 14 | 61°F | 1024.7 hPa (-0.9) | 55°F | ||
| BGXN3 - Great Bay Reserve, NH | 17 mi | 93 min | Calm | 48°F | 1026 hPa | 48°F | ||
| 44073 | 20 mi | 134 min | NNE 12 G 14 | 65°F | ||||
| 44029 - Buoy A0102 - Mass. Bay/Stellwagen | 24 mi | 74 min | NE 12 G 16 | 64°F | 5 ft | 1024.5 hPa | ||
| 44013 - BOSTON 16 NM East of Boston, MA | 33 mi | 28 min | 64°F | 65°F | 4 ft | 1023.7 hPa (-0.3) | ||
| 44030 - Buoy B0102 - Western Maine Shelf | 33 mi | 74 min | NNE 12 G 14 | 60°F | 65°F | 4 ft | 1025.7 hPa | |
| 44098 - Jeffrey's Ledge, NH (160) | 34 mi | 40 min | 67°F | 4 ft | ||||
| BHBM3 - 8443970 - Boston, MA | 34 mi | 48 min | 57°F | 1025.3 hPa | ||||
| WELM1 - 8419317 - Wells, ME | 38 mi | 48 min | N 4.1 G 7 | 52°F | 67°F | 1025.9 hPa | ||
| WEXM1 - Wells Reserve, ME | 39 mi | 78 min | NNW 4.1 | 51°F | 49°F |
Wind History for Wells, ME
(wind in knots) EDIT (on/off) Help| 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 | 12 AM | 1 AM | 2 AM | |
| Last 24hr | NE | N | N | N | N | NE G12 | NE G14 | E G14 | E G16 | E G16 | E G15 | E G14 | E G13 | E G11 | E G11 | E | E | N | N | N | NW | N | N | N |
| 1 day ago | NW | N | NW | NW | NW | N G11 | N G14 | NE G13 | NE G9 | E | E G10 | E G11 | SE G8 | NE G13 | E G13 | E G10 | E G9 | E | N | N | NW | N | NE | E G10 |
| 2 days ago | -- | NW G7 | NW | W | NW G6 | NW | NW G11 | NW G9 | N G9 | NE | NW G8 | N | NW G11 | NW G9 | NW | N | N | NW | N | NW | NW G8 | NW |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Lawrence Municipal Airport, MA | 17 mi | 4.4 hrs | N 0 | 10.00 mi | Fair | 52°F | 48°F | 89% | 1026.7 hPa |
| Beverly, Beverly Municipal Airport, MA | 17 mi | 2.4 hrs | N 5 | 10.00 mi | Fair | 51°F | 48°F | 89% | 1024.8 hPa |
| Pease Air Force Base / Portsmouth, NH | 19 mi | 4.4 hrs | N 7 | 10.00 mi | Fair | 56°F | 50°F | 84% | 1026.3 hPa |
Link to 5 minute data for KBVY
Wind History from BVY (wind in knots)
| 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 | 12 AM | 1 AM | |
| Last 24hr | N | N | N | N | N | N G19 | NE G17 | NE G19 | NE G17 | NE G18 | NE G16 | NE G18 | NE | NE | N | N | N | N | N | |||||
| 1 day ago | N | N | N | NW | N | N | N | NE | NE G18 | NE | NE | NE | E | E | E | E | NE | E | Calm | Calm | N | |||
| 2 days ago | W | NW | NW | N | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW |
Tide / Current Tables for Merrimack River Entrance, Massachusetts (2)
EDIT Weekend mode (on/off) (on/off) Help One Week of DataMerrimack River Entrance
Click for Map
Mon -- 01:18 AM EDT Moonrise
Mon -- 01:55 AM EDT 0.63 feet Low Tide
Mon -- 06:01 AM EDT Sunrise
Mon -- 08:06 AM EDT 7.56 feet High Tide
Mon -- 02:07 PM EDT 1.09 feet Low Tide
Mon -- 04:52 PM EDT Moonset
Mon -- 07:28 PM EDT Sunset
Mon -- 08:21 PM EDT 8.92 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 01:18 AM EDT Moonrise
Mon -- 01:55 AM EDT 0.63 feet Low Tide
Mon -- 06:01 AM EDT Sunrise
Mon -- 08:06 AM EDT 7.56 feet High Tide
Mon -- 02:07 PM EDT 1.09 feet Low Tide
Mon -- 04:52 PM EDT Moonset
Mon -- 07:28 PM EDT Sunset
Mon -- 08:21 PM EDT 8.92 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
| 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 |
| 2.2 | 1 | 0.6 | 1.1 | 2.3 | 4 | 5.8 | 7.1 | 7.6 | 7.3 | 6.3 | 4.7 | 3 | 1.7 | 1.1 | 1.4 | 2.6 | 4.4 | 6.4 | 8 | 8.9 | 8.7 | 7.8 | 6.1 |
Tide / Current Tables for Newburyport (Merrimack River), Massachusetts Current
EDIT (on/off) Help One Week of DataNewburyport (Merrimack River)
Click for Map
Mon -- 01:18 AM EDT Moonrise
Mon -- 02:58 AM EDT 0.00 knots Slack
Mon -- 06:01 AM EDT Sunrise
Mon -- 06:51 AM EDT 1.41 knots Max Flood
Mon -- 09:02 AM EDT -0.00 knots Slack
Mon -- 11:27 AM EDT -1.29 knots Max Ebb
Mon -- 03:13 PM EDT 0.00 knots Slack
Mon -- 04:53 PM EDT Moonset
Mon -- 07:10 PM EDT 1.47 knots Max Flood
Mon -- 07:28 PM EDT Sunset
Mon -- 09:23 PM EDT -0.00 knots Slack
Mon -- 11:58 PM EDT -1.52 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 01:18 AM EDT Moonrise
Mon -- 02:58 AM EDT 0.00 knots Slack
Mon -- 06:01 AM EDT Sunrise
Mon -- 06:51 AM EDT 1.41 knots Max Flood
Mon -- 09:02 AM EDT -0.00 knots Slack
Mon -- 11:27 AM EDT -1.29 knots Max Ebb
Mon -- 03:13 PM EDT 0.00 knots Slack
Mon -- 04:53 PM EDT Moonset
Mon -- 07:10 PM EDT 1.47 knots Max Flood
Mon -- 07:28 PM EDT Sunset
Mon -- 09:23 PM EDT -0.00 knots Slack
Mon -- 11:58 PM EDT -1.52 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
| 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 |
| -1.3 | -0.9 | -0.6 | 0 | 0.9 | 1.2 | 1.3 | 1.4 | 1 | 0 | -0.8 | -1.2 | -1.2 | -0.9 | -0.6 | -0.2 | 0.7 | 1.3 | 1.4 | 1.5 | 1.3 | 0.4 | -0.6 | -1.3 |
Weather Map and Satellite Images
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GOES 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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Boston, MA (3,6,7,8)
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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 numerious 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. |