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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 5:56AM | Sunset 7:39PM | Tuesday August 20, 2019 10:33 PM EDT (02:33 UTC) | Moonrise 10:20PM | Moonset 10:37AM | Illumination 71% |  |
ANZ236 Narragansett Bay- 1005 Pm Edt Tue Aug 20 2019
Overnight..S winds around 5 kt. Waves around 2 ft.
Wed..S winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers and tstms. Vsby 1 to 3 nm.
Wed night..SW winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to 4 ft. A chance of showers and tstms.
Thu..SW winds 5 to 10 kt. Waves 2 to 3 ft.
Thu night..W winds 5 to 10 kt, becoming nw after midnight. Waves 2 to 3 ft. A chance of showers and tstms.
Fri and Fri night..N winds 5 to 10 kt. Waves 2 to 3 ft.
Sat through Sun..NE winds 5 to 10 kt. Waves 2 to 3 ft. Winds and waves 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.
Overnight..S winds around 5 kt. Waves around 2 ft.
Wed..S winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers and tstms. Vsby 1 to 3 nm.
Wed night..SW winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to 4 ft. A chance of showers and tstms.
Thu..SW winds 5 to 10 kt. Waves 2 to 3 ft.
Thu night..W winds 5 to 10 kt, becoming nw after midnight. Waves 2 to 3 ft. A chance of showers and tstms.
Fri and Fri night..N winds 5 to 10 kt. Waves 2 to 3 ft.
Sat through Sun..NE winds 5 to 10 kt. Waves 2 to 3 ft. Winds and waves 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 1005 Pm Edt Tue Aug 20 2019
Synopsis for massachusetts and rhode island coastal waters.. A warm front will move north Wednesday morning and draw warm and very humid air over the waters. This will bring patchy fog as well as showers and scattered Thunderstorms Wednesday through Thursday. A cold front then sweeps across the waters sometime Thursday night into early Friday morning afterwhich dry weather and good vsby follows for Friday into the weekend. 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 warm front will move north Wednesday morning and draw warm and very humid air over the waters. This will bring patchy fog as well as showers and scattered Thunderstorms Wednesday through Thursday. A cold front then sweeps across the waters sometime Thursday night into early Friday morning afterwhich dry weather and good vsby follows for Friday into the weekend. 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 Somerset, MA
Hourly EDIT Helplocation: 41.71, -71.17 debug
Area Discussion for - Boston, MA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kbox 210142 afdbox area forecast discussion national weather service boston norton ma 942 pm edt Tue aug 20 2019 Synopsis High pressure over southern new england moves offshore tonight providing seasonable dry weather. A warm front moves across the region Wednesday providing scattered showers and thunderstorms along with increasing heat and humidity. A cold front Thursday will bring another round of scattered showers and thunderstorms. The front moves offshore Friday with dry weather to follow into the weekend with mild days and cool nights along with comfortable humidity. Near term until 6 am Wednesday morning Satellite imagery shows clouds in western ny and pa. Northeast radar mosaic shows showers thunder moving into western pa and approaching the i-79 corridor. Movement of the clouds and showers would bring them into the ct valley at about 10-12z 6-8 am, assuming that they hold together through that time. There are also a couple of isolated showers farther east in pa, but they are moving in to more stable air and should diminish. 9 pm observations show dew points in the low to mid 60s. No expectation that they will get any lower than that overnight. Hourly observed temperatures were 3-4f lower than forecast, but dew points suggest the min temperature forecast remains reasonable and so no changes planned. Extrapolation of observed showers is a couple of hours slower than the forecast, but within the margin of uncertainty. Low risk for some elevated convection toward sunrise along the south coast of ma ri and over western ma ct as warm front aloft surges northeastward. So no changes in timing for this update, but the potential for a slower onset is noted. Short term 6 am Wednesday morning through Wednesday night Wednesday ... very complex forecast especially afternoon convection and severity. Warm front lifts northward into the region Wed morning. Some of the guidance suggest an active warm front with lots of showers t-storms. If this verifies lots of cloud debris would linger into the afternoon and could suppress afternoon convection. In addition lots of morning convection could delay warm frontal passage and thus diminish risk of strong afternoon storms. Conversely some of the guidance does not have much if any warm frontal precip during the morning followed by warm sector overspreading southern new england with 12z href and ec offering up to 2500 j kg of sb cape. Thus robust warm sector combined with up to 30 kt of deep layer shear. These high CAPE and modest shear profiles combined with forcing for ascent from short wave trough moving from ny to vt nh would support a low to moderate risk of strong to severe storms. However this convective forecast will hinge on warm frontal morning convection and how quickly warm sector can overspread ma ri ct. Some morning warm frontal convection could enhance diurnal storms with leftover boundaries along with differential heating from leftover cloud debris. So overall lots of uncertainty regarding severe potential tomorrow. Hopefully 00z runs show a trend. Otherwise gradually becoming more humid tomorrow especially if warm front lifts north of the area. Long term Thursday through Tuesday Highlights... * hot and humid Thu with a risk for a few showers t-storms near and south of the pike, shifting to the south coast Thu night * cooler and less humid fri * pleasantly warm days and cool nights this weekend into early next week details... Thursday into Thursday night... another robust mid level shortwave will be rotating across the great lakes with downstream SW flow aloft across new eng. Cold front moves into the interior Thu but slows and eventually gets hung up near the south coast Thu evening. Models show some drier air aloft moving into sne Thu morning before moisture gradually deepens later Thu thu evening, especially south of the pike. It will be a hot and humid day with partly to mostly sunny skies. 925 mb temps 22-24c support highs around 90, except cooler near the south coast and higher terrain in ma. Dewpoints lower 70s in the coastal plain but falling through the 60s interior behind the front. Marginal instability develops Thu with forecast capes around 1000 j kg, focused south of the pike. Models are not very bullish on convective precip, likely due to presence of mid level dry air which may limit convective activity during the day. Best chance for a few afternoon t-storms will likely be near and south of the pike ahead of the front, and there is enough deep layer shear for an isolated strong to severe storm. While instability diminishes after dark, better chance for showers and a few t-storms may be Thu night along the south coast as deeper moisture with pwat plume nearing 2 inches moves up along the south coast ahead of a shortwave and along the stalled frontal boundary which eventually pushes south and offshore by late Thu night. Friday... there is some uncertainty regarding how quickly clearing occurs near the south coast. It is possible clouds may linger into Fri near the south coast with a risk of a few showers. Otherwise, more sunshine likely north of the pike. Cooler post frontal airmass will yield highs mainly mid 70s to around 80 with low humidity. Saturday through Tuesday... |
ecmwf appears to be an outlier with development of closed low over new eng this weekend into early next week and not really supported by majority of its ensemble members. Trend is for mid level ridging to develop across the NE late in the weekend into early next week, with shower threat possibly increasing by Tue depending on timing of next shortwave. Coolest days likely Sun Mon with high pres in the maritimes with NE flow and will have to watch for some lower clouds during this time period. Overall, looking at highs mostly in the 70s and lows in the 50s this weekend into early next week, with highs in the 60s possible along the east coast Sun mon. Aviation 02z Wednesday through Sunday Forecaster confidence levels... low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. Short term through Wednesday night ... Moderate confidence. Tonight ... VFR, dry weather and light s-se winds near shore with light and variable wind inland.VFR-MVFR toward daybreak along with the risk of isolated shower t-storm western ct ma after 5 am. Wednesday ... vfr-MVFR in scattered showers t-storms throughout the day. S-se winds becoming s-sw late. A few strong storms possible with gusty winds, frequent lightning and torrential downpours. Greatest risk western ct into NW ma. Wed night ... MVFR-vfr with chance of showers t-storms especially early in the evening. S-sw winds increasing up to 20-25 kt over CAPE cod and islands. Kbos terminal... High confidence in TAF thru tonight. Then uncertainty Wed on timing and areal coverage of showers t-storms along with uncertainty on wind shift from SE to sw, likely occurring late in the day wed. Kbdl terminal... High confidence in TAF thru this evening. Then uncertainty on timing and areal coverage of showers t-storms late tonight into wed. Outlook Thursday through Sunday ... Moderate confidence Thursday: mainlyVFR, with areas MVFR possible. Slight chance shra, slight chance tsra. Thursday night: mainlyVFR, with local MVFR possible. Slight chance shra. Friday through Sunday:VFR. Marine Forecaster confidence levels... low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. Short term through Wednesday night ... High confidence. Tonight ... Tranquil weather with 1020 mb high over pa drifting eastward. Dry weather and good vsby expected along with tranquil seas. Wednesday ... Warm front lifts into the waters with scattered showers and t-storms. Low prob for a few strong storms. Wednesday night ... Warm front lifts north into nh me waters with evening scattered showers t-storms possible. Patchy fog possible. Outlook Thursday through Sunday ... Moderate confidence. Thursday: winds less than 25 kt. Seas locally approaching 5 ft. Slight chance of rain showers, slight chance of thunderstorms. Thursday night: winds less than 25 kt. Seas locally approaching 5 ft. Chance of rain showers, chance of thunderstorms. Friday through Friday night: winds less than 25 kt. Areas of seas approaching 5 ft. Saturday: winds less than 25 kt. Seas locally approaching 5 ft. Saturday night: winds less than 25 kt. Sunday: winds less than 25 kt. Areas of seas approaching 5 ft. Box watches warnings advisories Ct... None. Ma... None. Ri... None. Marine... None. Synopsis... Kjc nocera near term... Wtb kjc nocera short term... Nocera long term... Kjc aviation... Wtb kjc nocera marine... Wtb kjc nocera |
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 |
| BLTM3 - 8447387 - Borden Flats Light at Fall River, MA | 0 mi | 63 min | SSW 4.1 G 6 | 78°F | 1017.4 hPa | |||
| FRVM3 - 8447386 - Fall River, MA | 1 mi | 63 min | 77°F | 80°F | 1017.8 hPa | |||
| FRXM3 | 1 mi | 63 min | 77°F | 62°F | ||||
| CPTR1 - 8452944 - Conimicut Light, RI | 9 mi | 63 min | SSW 8 G 8.9 | 76°F | 78°F | 1017.5 hPa | ||
| NAXR1 - Narragansett Bay Reserve, RI | 10 mi | 108 min | SSW 2.9 | 73°F | 1018 hPa | 68°F | ||
| PRUR1 | 10 mi | 63 min | 73°F | 65°F | ||||
| PTCR1 - 8452951 - Potter Cove, Prudence Island, RI | 10 mi | 63 min | SW 1.9 G 4.1 | 73°F | 1018 hPa | |||
| PVDR1 | 12 mi | 63 min | SSE 4.1 G 5.1 | 77°F | 1017.7 hPa | 66°F | ||
| FOXR1 - 8454000 - Providence, RI | 14 mi | 63 min | SW 2.9 G 6 | 78°F | 75°F | 1017.3 hPa | ||
| QPTR1 - 8454049 - Quonset Point, RI | 15 mi | 63 min | SW 7 G 8 | 76°F | 76°F | 1017.7 hPa | ||
| NWPR1 - 8452660 - Newport, RI | 16 mi | 63 min | S 5.1 G 6 | 74°F | 69°F | 1017.6 hPa | ||
| BZBM3 - 8447930 - Woods Hole, MA | 29 mi | 63 min | 73°F | 74°F | 1017.7 hPa | |||
| WAXM3 - Waquoit Bay Reserve, MA | 35 mi | 108 min | S 1 | 74°F | 1018 hPa | 67°F | ||
| 44090 | 45 mi | 33 min | 71°F | |||||
| BHBM3 - 8443970 - Boston, MA | 45 mi | 129 min | 74°F | 1017 hPa |
Wind History for Borden Flats Light at Fall River, MA
(wind in knots) EDIT (on/off) Help| 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 | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | |
| Last 24hr | SW | SW | SW | SW | SW | SW | W | SW | NW | NW | NW | NW | NW | W | SW | SW | SW | SW | SW | SW | S | S | SW G8 | SW |
| 1 day ago | SW | S | S G13 | SW G17 | S G13 | S G18 | SW | SW | S | SW | SW | SW | SW | SW | S G14 | S G16 | SW G20 | SW G21 | SW | SW | SW | SW G15 | SW | SW |
| 2 days ago | SE | SE | SW | SW | S | SW | SW | SW | SW | SW | SW | SW | S | SW | SW | SW | SW | S | S | S G13 | S G14 | S G13 | SW | SW |
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 |
| New Bedford, New Bedford Regional Airport, MA | 11 mi | 40 min | N 0 | 10.00 mi | Fair | 68°F | 63°F | 84% | 1017.4 hPa |
| Newport, Newport State Airport, RI | 13 mi | 40 min | SSW 4 | 10.00 mi | Fair | 74°F | 59°F | 60% | 1017.5 hPa |
| Providence, Theodore Francis Green State Airport, RI | 14 mi | 42 min | WSW 4 | 10.00 mi | Fair | 73°F | 64°F | 76% | 1017.7 hPa |
| N. Kingston / Quonset, RI | 15 mi | 43 min | SW 5 | 10.00 mi | Clear | 75°F | 64°F | 69% | 1017.6 hPa |
| Taunton, Taunton Municipal Airport, MA | 15 mi | 41 min | N 0 | 10.00 mi | Fair | 66°F | 62°F | 87% | 1017.1 hPa |
| Pawtucket, North Central State Airport, RI | 18 mi | 37 min | N 0 | 10.00 mi | Fair | 66°F | 62°F | 87% | 1012.7 hPa |
Link to 5 minute data for KEWB
Wind History from EWB (wind in knots)
| 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 | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | |
| Last 24hr | Calm | Calm | S | Calm | NW | W | W | W | W | SW | SW | SW | SW | Calm | ||||||||||
| 1 day ago | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | S | SW | SW | SW | SW | W | SW | Calm | SW | |||||
| 2 days ago | Calm | SE | S | Calm | W | W | SW | W | SW | SE | SE | SW | SW | S | SW | S | SW | SW |
Tide / Current Tables for Fall River, State Pier, Narragansett Bay, Rhode Island
EDIT Weekend mode (on/off) (on/off) Help One Week of DataFall River
Click for Map
Tue -- 04:37 AM EDT 0.39 feet Low Tide
Tue -- 05:58 AM EDT Sunrise
Tue -- 10:36 AM EDT Moonset
Tue -- 12:05 PM EDT 4.49 feet High Tide
Tue -- 05:00 PM EDT 0.72 feet Low Tide
Tue -- 07:37 PM EDT Sunset
Tue -- 10:20 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 04:37 AM EDT 0.39 feet Low Tide
Tue -- 05:58 AM EDT Sunrise
Tue -- 10:36 AM EDT Moonset
Tue -- 12:05 PM EDT 4.49 feet High Tide
Tue -- 05:00 PM EDT 0.72 feet Low Tide
Tue -- 07:37 PM EDT Sunset
Tue -- 10:20 PM EDT Moonrise
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 |
| 4.4 | 3.7 | 2.5 | 1.3 | 0.5 | 0.4 | 0.8 | 1.4 | 2.1 | 2.9 | 3.6 | 4.2 | 4.5 | 4.2 | 3.2 | 2 | 1.1 | 0.7 | 0.9 | 1.4 | 2 | 2.6 | 3.2 | 3.8 |
Tide / Current Tables for Westport River Entrance, Massachusetts Current
EDIT (on/off) Help One Week of DataWestport River Entrance
Click for Map
Tue -- 12:24 AM EDT -0.00 knots Slack
Tue -- 02:53 AM EDT -2.74 knots Max Ebb
Tue -- 05:58 AM EDT Sunrise
Tue -- 06:25 AM EDT 0.00 knots Slack
Tue -- 10:28 AM EDT 2.04 knots Max Flood
Tue -- 10:36 AM EDT Moonset
Tue -- 12:50 PM EDT -0.00 knots Slack
Tue -- 03:18 PM EDT -2.71 knots Max Ebb
Tue -- 06:52 PM EDT 0.00 knots Slack
Tue -- 07:36 PM EDT Sunset
Tue -- 10:20 PM EDT Moonrise
Tue -- 10:50 PM EDT 1.82 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 12:24 AM EDT -0.00 knots Slack
Tue -- 02:53 AM EDT -2.74 knots Max Ebb
Tue -- 05:58 AM EDT Sunrise
Tue -- 06:25 AM EDT 0.00 knots Slack
Tue -- 10:28 AM EDT 2.04 knots Max Flood
Tue -- 10:36 AM EDT Moonset
Tue -- 12:50 PM EDT -0.00 knots Slack
Tue -- 03:18 PM EDT -2.71 knots Max Ebb
Tue -- 06:52 PM EDT 0.00 knots Slack
Tue -- 07:36 PM EDT Sunset
Tue -- 10:20 PM EDT Moonrise
Tue -- 10:50 PM EDT 1.82 knots Max Flood
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 |
| 0.6 | -1 | -2.3 | -2.7 | -2.2 | -1.3 | -0.4 | 0.5 | 1.1 | 1.6 | 2 | 2 | 1.2 | -0.3 | -1.8 | -2.7 | -2.5 | -1.7 | -0.7 | 0.1 | 0.8 | 1.3 | 1.7 | 1.8 |
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 (22,6,7,8)
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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. |