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Marine Weather and Tides
Version 3.4 |
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome. 10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name. |
| Sunrise 6:57AM | Sunset 6:00PM | Tuesday October 16, 2018 2:35 PM EDT (18:35 UTC) | Moonrise 2:05PM | Moonset 11:41PM | Illumination 47% |  |
ANZ251 Massachusetts Bay And Ipswich Bay- 116 Pm Edt Tue Oct 16 2018
.small craft advisory in effect until 2 pm edt this afternoon...
This afternoon..W winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft.
Tonight..W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Wed..SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 20 to 25 kt with gusts up to 30 kt in the afternoon. Seas 3 to 4 ft.
Wed night..W winds 20 to 25 kt with gusts up to 35 kt. Seas around 4 ft.
Thu..NW winds 20 to 25 kt with gusts up to 30 kt. Seas around 4 ft.
Thu night..NW winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas around 4 ft.
Fri..W winds 5 to 10 kt, becoming sw 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 3 ft.
Fri night..SW winds 10 to 15 kt with gusts up to 25 kt. Seas around 3 ft. A chance of showers after midnight.
Sat..SW winds 10 to 15 kt with gusts up to 25 kt. Seas around 3 ft. A chance of showers in the morning.
Sat night..W winds 10 to 15 kt with gusts up to 25 kt. Seas around 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.
.small craft advisory in effect until 2 pm edt this afternoon...
This afternoon..W winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft.
Tonight..W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Wed..SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 20 to 25 kt with gusts up to 30 kt in the afternoon. Seas 3 to 4 ft.
Wed night..W winds 20 to 25 kt with gusts up to 35 kt. Seas around 4 ft.
Thu..NW winds 20 to 25 kt with gusts up to 30 kt. Seas around 4 ft.
Thu night..NW winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas around 4 ft.
Fri..W winds 5 to 10 kt, becoming sw 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 3 ft.
Fri night..SW winds 10 to 15 kt with gusts up to 25 kt. Seas around 3 ft. A chance of showers after midnight.
Sat..SW winds 10 to 15 kt with gusts up to 25 kt. Seas around 3 ft. A chance of showers in the morning.
Sat night..W winds 10 to 15 kt with gusts up to 25 kt. Seas around 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 Pm Edt Tue Oct 16 2018
Synopsis for massachusetts and rhode island coastal waters.. A cold front will cross the waters late Wed into Wed evening followed by another period of gale force wind gusts. A ridge of high pres will then build south of the waters Thu night into Fri. This will be followed the the passage of another cold front sometime late Sat or Sat night. 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.. A cold front will cross the waters late Wed into Wed evening followed by another period of gale force wind gusts. A ridge of high pres will then build south of the waters Thu night into Fri. This will be followed the the passage of another cold front sometime late Sat or Sat night. 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 Ipswich, MA
Hourly EDIT Helplocation: 42.68, -70.83 debug
Area Discussion for - Boston, MA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kbox 161744 afdbox area forecast discussion national weather service boston norton ma 144 pm edt Tue oct 16 2018 Synopsis Today will feature plenty of sunshine but a return to cool temperatures across southern new england. Another cold front moves through Wednesday. Behind the front, the coldest air of this young fall season invades the area Wed night and thu. However the cold weather is short lived with moderating temps fri and Sat but a chance of showers ahead of a cold front Saturday. Colder air returns Sunday and Monday behind the frontal passage. Near term until 6 pm this evening 930 am update... winds will continue to diminish through the day while becoming west. Zonal flow aloft with upper level jet overhead will bring some high clouds to areas south of the pike, otherwise lots of sunshine. Column is very dry with pwats less than 0.25". No changes to temps, mainly mid upper 50s for highs, cooler higher terrain. Short term 6 pm this evening through 6 pm Wednesday Tonight... a dry and cool night is in store for the region. Another shortwave approaching from the west will result in enough southwest boundary layer flow to keep many areas from completely decoupling. This should hold overnight low temperatures mainly in the upper 30s to the lower 40s. Wednesday... a vigorous shortwave trough will approach from the great lakes on Wednesday. While we should see a scattered to broken deck of cloudiness develop... Enough sunshine and mixing particularly in the morning should allow for highs to reach between 60 and 65 on the coastal plain and mid to upper 50s across the interior high terrain. The shortwave does not have much moisture to tap, but enough forcing may exist for a few brief spot showers especially across the interior. Regardless... The vast majority of the day will be dry but it will be come windy by afternoon. Westerly wind gust of 25 to 35 mph are expected to develop. Long term Wednesday night through Monday Highlights... * unseasonably cold & blustery Wednesday night and Thursday * moderating temperatures Friday and Saturday * return to colder than normal temps Sunday and Monday * next chance of widespread showers Sat sat night synoptic overview and model preferences. Gefs and ecens favor the following teleconnections - negative epo positive pna which supports a high amplitude eastern pacific western canada ridge. Likewise anomalous downstream trough across ontario quebec and into the northeast. However with the nao remaining positive these northern stream troughs and associated cold surges will remain progressive. So typical fall pattern with large temperature fluctuations thru the 7 day period. As for precipitation, given the pattern remains progressive little opportunity for cyclogenesis at this latitude with frontal passages remaining progressive. Thus a few bouts of showers, Wednesday (widely scattered to isolated) and more widespread showers sat-sat night. Wednesday night... strong cold air advection with 850 mb temps falling to -8c to -10c by Thu morning! This will drive temps down into the 30s regionwide and blustery NW winds 15-30 mph yielding wind chills in the 20s! Thursday... anomalous cold airmass over the region with 850 mb temps starting the day at -8c to 10c and only warming to about -7c by days end. This will only support highs only in the 40s but gusty NW winds 20- 30 mph will yield wind chills in the 30s! To put this into perspective, highs in the mid 40s Thu is more typical of early dec. However avg high for this time of year should be from the upper 50s (worcester) to the lower 60s from hartford-providence to boston. In fact our expected highs Thu (m40s) is colder than our avg night time low temp. Friday... upper air pattern remains progressive so anomalous cold trough exits with rising heights warming temps aloft. Some warm advection clouds in the morning should give way to sunshine the remainder of the day. Southwest flow results in 925 mb temps recovering to about +4c to +5c by Fri afternoon should support highs well into the 50s, a noticeable warmup from thu. Weekend... another robust northern stream short wave and attending cold front approach sat. Ensembles and deterministic runs in good agreement with FROPA sometime late sat-sat night. This trough has more moisture to work with than Wednesday's trough so showers should be more widespread than midweek. Low level WAA should result in highs in the upper 50s to lower 60s Saturday. Colder and drier Sunday in the post frontal airmass. Not quite as cold as Thu but 850 mb temps lowering to about -4c to -6c will support colder than normal conditions with highs in the upper 40s to lower 50s. It will feel colder given gusty NW winds. Early next week... ensembles and deterministic guidance keep high amplitude long wave trough over the northeast and great lakes. Thus temps at or cooler than normal appear likely. Can't rule out isolated diurnal showers given cyclonic cold flow aloft but mainly dry weather prevails. Aviation 18z Tuesday through Sunday Forecaster confidence levels... |
low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. Short term through Wednesday ... High confidence. Through tonight...VFR. Light W SW wind. Wednesday... vfr. Sct-bkn CU 5-6k ft developing in the afternoon, greatest coverage in the interior where a few showers possible. Gusty sw winds in the morning becoming west with 25-30 kt gusts developing in the afternoon. Wednesday night... vfr. W NW gusts 20-30 kt early in the evening, then diminishing but remaining gusty along the immediate coast. Kbos terminal... High confidence in taf. Kbdl terminal... High confidence in taf. Outlook Wednesday night through Saturday ... Moderate-high confidence. Wednesday night:VFR. Windy with gusts to 35 kt. Thursday:VFR. Windy with gusts to 30 kt. Thursday night:VFR. Windy with local gusts to 30 kt. Friday:VFR. Breezy. Friday night:VFR. Windy with local gusts to 30 kt. Chance shra. Saturday: mainlyVFR, with local MVFR possible. Windy with gusts to 30 kt. Chance shra. Marine Forecaster confidence levels... low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. Short term through Wednesday ... High confidence. Today... leftover NW gusts to 25-30 kt early will diminish through the day. West gusts becoming less than 20 kt this afternoon. Rough seas gradually subsiding. Tonight... wsw wind gusts around 20 knots expected ahead of another cold front. Marginal 5 foot seas will persist across the outer-waters. Wednesday... westerly wind gusts will increase as the day wears on behind another cold front. Expect another round of gale force westerly wind gusts by afternoon evening... But given current gale headlines will have to wait until later today to issue a new set. Seas will once again build across the outer-waters. Outlook Wednesday night through Saturday ... Moderate to high Wednesday: low risk for gale force winds with gusts up to 35 kt. Areas of rough seas. Wednesday night: low risk for gale force winds with gusts up to 40 kt. Rough seas up to 10 ft. Thursday: moderate risk for gale force winds with gusts up to 35 kt. Areas of rough seas. Thursday night: low risk for small craft advisory winds with gusts up to 30 kt. Local rough seas. Friday: winds less than 25 kt. Areas of seas approaching 5 ft. Friday night through Saturday: moderate risk for small craft advisory winds with gusts up to 30 kt. Areas of rough seas. Chance of rain showers. Climate Record low maximum temperatures for Thursday october 18 bos 45 in 1898 orh 36 in 1989 bdl 44 in 2009 pvd 46 in 1939 Box watches warnings advisories Ct... None. Ma... None. Ri... None. Marine... Small craft advisory until 2 pm edt this afternoon for anz231- 251. Small craft advisory until 5 pm edt this afternoon for anz250. Small craft advisory until 6 am edt Wednesday for anz254>256. Synopsis... Frank nocera near term... Kjc short term... Frank long term... Nocera aviation... Kjc sipprell marine... Frank nocera sipprell climate... |
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 |
| 44029 - Buoy A0102 - Mass. Bay/Stellwagen | 18 mi | 92 min | W 16 G 19 | 53°F | 58°F | 2 ft | 1014.5 hPa | |
| IOSN3 - Isle of Shoals, NH | 23 mi | 36 min | W 18 G 20 | 53°F | 1013.6 hPa (-1.2) | 29°F | ||
| BHBM3 - 8443970 - Boston, MA | 25 mi | 36 min | 57°F | 1015.3 hPa (-1.6) | ||||
| 44013 - BOSTON 16 NM East of Boston, MA | 25 mi | 46 min | W 16 G 18 | 54°F | 59°F | 2 ft | 1014.7 hPa (-1.4) | 35°F |
| BGXN3 - Great Bay Reserve, NH | 26 mi | 51 min | W 8 | 58°F | 36°F | |||
| 44098 - Jeffrey's Ledge, NH (160) | 36 mi | 30 min | 57°F | 4 ft | ||||
| 44030 - Buoy B0102 - Western Maine Shelf | 41 mi | 92 min | W 14 G 19 | 52°F | 56°F | 2 ft | 1014 hPa | |
| WELM1 - 8419317 - Wells, ME | 46 mi | 42 min | WNW 8 G 14 | 56°F | 55°F | 1013.7 hPa | ||
| WEXM1 - Wells Reserve, ME | 48 mi | 51 min | W 6 | 55°F | 30°F | |||
| 44018 - SE Cape Cod 30NM East of Nantucket, MA | 49 mi | 46 min | W 18 G 21 | 52°F | 4 ft | 1015.3 hPa (-1.3) | 32°F |
Wind History for Wells, ME
(wind in knots) EDIT (on/off) Help| 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 | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | |
| Last 24hr | S | SW G14 | SW G17 | SW | SW | SW | SW | SW G12 | SW G19 | SW G17 | NW G25 | W G13 | W G18 | W G19 | NW G24 | NW G26 | NW G22 | NW G17 | NW G14 | W G11 | NW G18 | NW G21 | NW G21 | NW G20 |
| 1 day ago | SW | W G10 | SW | W | N | W | N | S | W | NW | NE | W | NW | NW | N | NW | W | -- | SW | SW | ||||
| 2 days ago | NW G11 | W | W G9 | NW G8 | NW | NW | W | W | W | W G8 | N | W | W | NW | NW | W G7 | W G7 | W G8 | W G11 | W G8 | W G9 | W G10 | W G14 | SW G9 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Beverly, Beverly Municipal Airport, MA | 8 mi | 43 min | W 7 G 16 | 10.00 mi | Fair | 57°F | 32°F | 39% | 1014.5 hPa |
| Lawrence Municipal Airport, MA | 16 mi | 42 min | W 11 G 20 | 10.00 mi | Fair | 59°F | 30°F | 35% | 1015.4 hPa |
| Boston, Logan International Airport, MA | 23 mi | 42 min | WNW 12 G 19 | 10.00 mi | Partly Cloudy | 58°F | 30°F | 35% | 1015.3 hPa |
Wind History from BVY (wind in knots)
| 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 | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | |
| Last 24hr | S | S G18 | S | SW | SW G18 | SW | SW G18 | SW G24 | SW G22 | SW G22 | W G28 | W | W G17 | W G23 | W G21 | W G22 | W | W | W | W G16 | W | W G21 | W G18 | W G16 |
| 1 day ago | W | W | SW | SW | Calm | Calm | W | SW | SW | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | S | S | SE | S | S |
| 2 days ago | W | NW G16 | W | W | SW | NW | Calm | W | W | Calm | W | W | W | W | SW | W | SW | W | W | W | W | W G14 | W | W |
Tide / Current Tables for Plum Island Sound (south end), Massachusetts
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of DataPlum Island Sound (south end)
Click for Map
Tue -- 05:29 AM EDT 7.69 feet High Tide
Tue -- 06:57 AM EDT Sunrise
Tue -- 11:48 AM EDT 1.79 feet Low Tide
Tue -- 02:02 PM EDT First Quarter
Tue -- 02:04 PM EDT Moonrise
Tue -- 05:37 PM EDT 8.24 feet High Tide
Tue -- 05:59 PM EDT Sunset
Tue -- 11:41 PM EDT Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 05:29 AM EDT 7.69 feet High Tide
Tue -- 06:57 AM EDT Sunrise
Tue -- 11:48 AM EDT 1.79 feet Low Tide
Tue -- 02:02 PM EDT First Quarter
Tue -- 02:04 PM EDT Moonrise
Tue -- 05:37 PM EDT 8.24 feet High Tide
Tue -- 05:59 PM EDT Sunset
Tue -- 11:41 PM EDT Moonset
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 |
| 0.9 | 1.8 | 3.4 | 5.3 | 6.8 | 7.6 | 7.6 | 6.9 | 5.7 | 4.1 | 2.8 | 2 | 1.8 | 2.4 | 3.8 | 5.6 | 7.2 | 8.1 | 8.2 | 7.6 | 6.4 | 4.7 | 3.1 | 1.9 |
Tide / Current Tables for Newburyport (Merrimack River), Massachusetts Current
EDIT (on/off) Help One Week of DataNewburyport (Merrimack River)
Click for Map
Tue -- 12:22 AM EDT 0.00 knots Slack
Tue -- 04:04 AM EDT 1.42 knots Max Flood
Tue -- 06:26 AM EDT -0.00 knots Slack
Tue -- 06:58 AM EDT Sunrise
Tue -- 08:44 AM EDT -0.78 knots Max Ebb
Tue -- 09:42 AM EDT -0.75 knots Min Ebb
Tue -- 10:51 AM EDT -0.81 knots Max Ebb
Tue -- 12:39 PM EDT 0.00 knots Slack
Tue -- 02:02 PM EDT First Quarter
Tue -- 02:05 PM EDT Moonrise
Tue -- 04:27 PM EDT 1.37 knots Max Flood
Tue -- 05:59 PM EDT Sunset
Tue -- 06:43 PM EDT -0.00 knots Slack
Tue -- 09:19 PM EDT -0.94 knots Max Ebb
Tue -- 09:57 PM EDT -0.93 knots Min Ebb
Tue -- 11:18 PM EDT -1.00 knots Max Ebb
Tue -- 11:41 PM EDT Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 12:22 AM EDT 0.00 knots Slack
Tue -- 04:04 AM EDT 1.42 knots Max Flood
Tue -- 06:26 AM EDT -0.00 knots Slack
Tue -- 06:58 AM EDT Sunrise
Tue -- 08:44 AM EDT -0.78 knots Max Ebb
Tue -- 09:42 AM EDT -0.75 knots Min Ebb
Tue -- 10:51 AM EDT -0.81 knots Max Ebb
Tue -- 12:39 PM EDT 0.00 knots Slack
Tue -- 02:02 PM EDT First Quarter
Tue -- 02:05 PM EDT Moonrise
Tue -- 04:27 PM EDT 1.37 knots Max Flood
Tue -- 05:59 PM EDT Sunset
Tue -- 06:43 PM EDT -0.00 knots Slack
Tue -- 09:19 PM EDT -0.94 knots Max Ebb
Tue -- 09:57 PM EDT -0.93 knots Min Ebb
Tue -- 11:18 PM EDT -1.00 knots Max Ebb
Tue -- 11:41 PM EDT Moonset
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 |
| -0.3 | 0.4 | 0.8 | 1.1 | 1.4 | 1.1 | 0.3 | -0.3 | -0.7 | -0.8 | -0.8 | -0.8 | -0.5 | 0.2 | 0.7 | 0.9 | 1.3 | 1.3 | 0.6 | -0.2 | -0.7 | -0.9 | -0.9 | -1 |
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 (14,3,4,5)
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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. |