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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 6:02AM | Sunset 7:33PM | Monday August 26, 2019 6:02 AM EDT (10:02 UTC) | Moonrise 1:20AM | Moonset 4:56PM | Illumination 18% |  |
ANZ230 Boston Harbor- 342 Am Edt Mon Aug 26 2019
Today..NE winds around 10 kt. Waves 2 to 3 ft.
Tonight..E winds 5 to 10 kt, becoming sw after midnight. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance.
Tue..W winds around 5 kt, becoming se in the afternoon. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance.
Tue night..S winds 5 to 10 kt. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance.
Wed..SE winds 5 to 10 kt. Waves 1 foot or less.
Wed night..SE winds 5 to 10 kt, becoming E after midnight. Waves 1 foot or less. Patchy fog. A chance of showers. Vsby 1 to 3 nm.
Thu..NE winds around 5 kt. Waves 1 foot or less. A chance of showers. Vsby 1 to 3 nm.
Thu through Fri..SW winds 5 to 10 kt. Waves 1 foot or less. 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.
Today..NE winds around 10 kt. Waves 2 to 3 ft.
Tonight..E winds 5 to 10 kt, becoming sw after midnight. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance.
Tue..W winds around 5 kt, becoming se in the afternoon. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance.
Tue night..S winds 5 to 10 kt. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance.
Wed..SE winds 5 to 10 kt. Waves 1 foot or less.
Wed night..SE winds 5 to 10 kt, becoming E after midnight. Waves 1 foot or less. Patchy fog. A chance of showers. Vsby 1 to 3 nm.
Thu..NE winds around 5 kt. Waves 1 foot or less. A chance of showers. Vsby 1 to 3 nm.
Thu through Fri..SW winds 5 to 10 kt. Waves 1 foot or less. 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 342 Am Edt Mon Aug 26 2019
Synopsis for massachusetts and rhode island coastal waters.. High pressure over the maritimes will build south over the waters early this week. This will bring slowly diminishing wind and seas during that time. A tropical depression may form off the coast of florida early this week. If the tropical system tracks close enough to our waters it could bring 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.. High pressure over the maritimes will build south over the waters early this week. This will bring slowly diminishing wind and seas during that time. A tropical depression may form off the coast of florida early this week. If the tropical system tracks close enough to our waters it could bring 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 South Hooksett, NH
Hourly EDIT Helplocation: 43.01, -71.38 debug
Area Discussion for - Gray/Portland, ME
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kgyx 260650 afdgyx area forecast discussion national weather service gray me 250 am edt Mon aug 26 2019 Synopsis High pressure will remain across region through the first half of the week. This will provide dry weather and seasonably cool temperatures. A cold front will move in Wednesday night and cross the area Thursday with a chance of showers. High pressure builds quickly by on Friday with another front arriving by Saturday morning. Near term through today Sfc high pressure will stay put across new england today providing for another fair weather day with temperatures mainly in the 70s. Strengthening upper level low pressure just off to our east will continue to move northeastward as well, keeping us on the dry side of it. This will allow for mostly sunny skies, although a period or two of bkn clouds may occur. A seabreeze is expected to move onshore this afternoon. Short term tonight through 6 pm Tuesday High pressure at the sfc remains across the region tonight. This will set the stage for another radiational cooling night with valley fog expected late. Not much change for Tuesday as high pressure very slowly slips off to the southeast. Aside from some increasing cirrus, mostly sunny conditions are expected. Highs will be a bit warmer than today's, reaching the mid 70s to around 80 at many locations. Long term Tuesday night through Sunday Broad upper trough over central north america will gradually shift eastward with time. The core of the upper low tracks northeast well north in canada while the lower trough axis moves into new england Wednesday night into Thursday along with a surface cold front. Another spoke of energy rotates through the upper trough sending another cold front into new england Friday night. Tuesday night could be another good radiational cooling night, though there is the potential for increasing clouds to put a cap on the cooling overnight. Wednesday sees a southerly flow ahead of the approaching cold front. Moisture return with this front is rather paltry by summer standards and the best lift will be well to the north. In fact, the front loses some of its push as it arrives Wednesday night and takes through Thursday to finally clear the area. We should expect scattered showers |
mainly in northern areas, but it will not amount to much total rainfall. One complicating factor is tropical low that gets pulled up the east coast on Thursday. When this moisture gets pulled into the frontal boundary it will provide a more significant rainfall, but this looks like it will happen to our east. Surface high pressure axis crosses the area on Friday with the next cold front arriving quickly from the northwest Friday night. Again the moisture return with the front is quite lacking, so don't expect much precipitation other than a stray shower. Dry high pressure builds in behind it. In fact, if gfs materializes dewpoints could be falling into the 30s which could set up some cool nights for the first few days of september. Aviation 06z Monday through Friday Short term through Tuesday ...VFR. Localized ifr conditions are likely between 08-12z at kleb and khie Monday and Tuesday morning in stratus and fog. Otherwise clear withVFR conditions. Afternoon seabreezes at the coast. Long term... Should stayVFR through Wednesday, though some morning fog is possible in the valleys. A cold front crosses the area Wednesday night into Thursday with a few showers as it does so. Marine Short term through Tuesday ... Onshore flow continues through Monday with gradually building seas. Winds should stay below 25 kt but seas will likely reach 5 ft tonight into Tuesday morning for the open waters south of casco bay. SCA for seas around 5 ft remains in effect. Long term... High pressure over the gulf of maine Tuesday gives way as a cold front approaches from the west and tropical low pressure moves north through the western atlantic on Wednesday. The low should pass to the east of the gulf of maine on Thursday. High pressure quickly crests over the east coast on Friday with another cold front arriving by Saturday morning. Gyx watches warnings advisories Me... None. Nh... None. Marine... Small craft advisory for hazardous seas from 11 pm this evening to 8 am edt Tuesday for anz150-152-154. |
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 |
| BGXN3 - Great Bay Reserve, NH | 29 mi | 77 min | Calm | 45°F | 1025 hPa | 45°F | ||
| IOSN3 - Isle of Shoals, NH | 40 mi | 62 min | N 13 G 15 | 59°F | 1024.1 hPa (-0.6) | 55°F | ||
| 44073 | 45 mi | 118 min | N 12 G 14 | 65°F | ||||
| WELM1 - 8419317 - Wells, ME | 48 mi | 44 min | NNW 5.1 G 6 | 51°F | 65°F | 1025.1 hPa | ||
| BHBM3 - 8443970 - Boston, MA | 49 mi | 50 min | 58°F | 1023.9 hPa |
Wind History for Wells, ME
(wind in knots) EDIT (on/off) Help| 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 | 3 AM | 4 AM | 5 AM | |
| Last 24hr | 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 | N | N | NW |
| 1 day ago | 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 | NE | N | N |
| 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 | NW | N | 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 |
| Manchester Airport, NH | 6 mi | 3.2 hrs | NNW 4 | 10.00 mi | Fair | 54°F | 48°F | 83% | 1026.5 hPa |
| Concord Municipal Airport, NH | 15 mi | 3.2 hrs | N 3 | 10.00 mi | Fair | 49°F | 46°F | 90% | 1026 hPa |
| Nashua - Boire Field Airport, NH | 17 mi | 6 min | NW 4 | 10.00 mi | Fair | 46°F | 46°F | 100% | 1025.6 hPa |
| Lawrence Municipal Airport, MA | 24 mi | 3.1 hrs | N 3 | 10.00 mi | Fair | 51°F | 48°F | 92% | 1026.1 hPa |
Link to 5 minute data for KMHT
Wind History from MHT (wind in knots)
| 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 | 3 AM | 4 AM | 5 AM | 6 AM | |
| Last 24hr | NE | NE | NE | NE | N | NE | NE | E | E | E G19 | E | E | E | Calm | NE | Calm | N | N | NE | NW | NW | Calm | N | N |
| 1 day ago | Calm | N | N | N | E | E | NE | E | SE | E | E | E | NE | Calm | Calm | N | NE | N | N | N | NE | |||
| 2 days ago | NW | N | NW | NW | NW | W | NW | NW | NW | N | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | N | N | NE | Calm |
Tide / Current Tables for Squamscott River RR. Bridge, New Hampshire
EDIT Weekend mode (on/off) (on/off) Help One Week of DataSquamscott River RR. Bridge
Click for Map
Mon -- 01:18 AM EDT Moonrise
Mon -- 04:12 AM EDT 0.52 feet Low Tide
Mon -- 06:01 AM EDT Sunrise
Mon -- 10:05 AM EDT 6.23 feet High Tide
Mon -- 04:24 PM EDT 0.90 feet Low Tide
Mon -- 04:54 PM EDT Moonset
Mon -- 07:29 PM EDT Sunset
Mon -- 10:20 PM EDT 7.35 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 01:18 AM EDT Moonrise
Mon -- 04:12 AM EDT 0.52 feet Low Tide
Mon -- 06:01 AM EDT Sunrise
Mon -- 10:05 AM EDT 6.23 feet High Tide
Mon -- 04:24 PM EDT 0.90 feet Low Tide
Mon -- 04:54 PM EDT Moonset
Mon -- 07:29 PM EDT Sunset
Mon -- 10:20 PM EDT 7.35 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 |
| 5.1 | 3.6 | 2.1 | 1 | 0.5 | 0.8 | 1.7 | 3.1 | 4.6 | 5.8 | 6.2 | 6 | 5.2 | 4.1 | 2.7 | 1.6 | 1 | 1 | 1.9 | 3.4 | 5.1 | 6.6 | 7.3 | 7.2 |
Tide / Current Tables for Dover Point, Piscataqua River, New Hampshire
EDIT (on/off) Help One Week of DataDover Point
Click for Map
Mon -- 01:17 AM EDT Moonrise
Mon -- 02:58 AM EDT 0.49 feet Low Tide
Mon -- 06:00 AM EDT Sunrise
Mon -- 09:19 AM EDT 5.81 feet High Tide
Mon -- 03:10 PM EDT 0.84 feet Low Tide
Mon -- 04:54 PM EDT Moonset
Mon -- 07:28 PM EDT Sunset
Mon -- 09:34 PM EDT 6.86 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 01:17 AM EDT Moonrise
Mon -- 02:58 AM EDT 0.49 feet Low Tide
Mon -- 06:00 AM EDT Sunrise
Mon -- 09:19 AM EDT 5.81 feet High Tide
Mon -- 03:10 PM EDT 0.84 feet Low Tide
Mon -- 04:54 PM EDT Moonset
Mon -- 07:28 PM EDT Sunset
Mon -- 09:34 PM EDT 6.86 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 |
| 3.3 | 1.9 | 0.8 | 0.5 | 0.8 | 1.7 | 2.9 | 4.3 | 5.3 | 5.8 | 5.7 | 5 | 3.8 | 2.5 | 1.3 | 0.8 | 1.1 | 1.9 | 3.2 | 4.7 | 6 | 6.7 | 6.8 | 6.2 |
Weather Map and Satellite Images
(on/off) HelpWeather Map
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 Gray/Portland, ME (6,6,7,8)
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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. |