|
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 6:31AM | Sunset 5:25PM | Wednesday February 20, 2019 12:09 PM EST (17:09 UTC) | Moonrise 7:50PM | Moonset 8:25AM | Illumination 98% |  |
ANZ236 Narragansett Bay- 1106 Am Est Wed Feb 20 2019
This afternoon..NE winds around 5 kt, becoming s. Waves 1 foot or less.
Tonight..SE winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Gusts up to 20 kt. Waves around 2 ft, building to 4 ft after midnight. Patchy fog. Snow in the evening. Rain and freezing rain after midnight. Vsby 1 nm or less, increasing to 1 to 3 nm after midnight.
Thu..W winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves around 4 ft. A chance of rain in the morning with vsby 1 to 3 nm.
Thu night..NW winds around 10 kt with gusts up to 20 kt. Waves around 3 ft.
Fri..NW winds 5 to 10 kt. Waves 2 to 3 ft.
Fri night..N winds around 5 kt. Waves around 2 ft.
Sat..E winds around 5 kt, becoming S in the afternoon. Waves 1 foot or less, then around 2 ft in the afternoon. A chance of rain in the afternoon.
Sat night..SE winds 5 to 10 kt. Waves 2 to 3 ft. Rain.
Sun..S winds 10 to 15 kt. Waves 3 to 4 ft. Rain.
Sun night..W winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Waves around 5 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.
This afternoon..NE winds around 5 kt, becoming s. Waves 1 foot or less.
Tonight..SE winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Gusts up to 20 kt. Waves around 2 ft, building to 4 ft after midnight. Patchy fog. Snow in the evening. Rain and freezing rain after midnight. Vsby 1 nm or less, increasing to 1 to 3 nm after midnight.
Thu..W winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves around 4 ft. A chance of rain in the morning with vsby 1 to 3 nm.
Thu night..NW winds around 10 kt with gusts up to 20 kt. Waves around 3 ft.
Fri..NW winds 5 to 10 kt. Waves 2 to 3 ft.
Fri night..N winds around 5 kt. Waves around 2 ft.
Sat..E winds around 5 kt, becoming S in the afternoon. Waves 1 foot or less, then around 2 ft in the afternoon. A chance of rain in the afternoon.
Sat night..SE winds 5 to 10 kt. Waves 2 to 3 ft. Rain.
Sun..S winds 10 to 15 kt. Waves 3 to 4 ft. Rain.
Sun night..W winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Waves around 5 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 1106 Am Est Wed Feb 20 2019
Synopsis for massachusetts and rhode island coastal waters.. High pres moves over the waters this afternoon. Low pres approaches the waters from the sw tonight, then passes over the waters Thu bringing strong se winds to the waters. High pres follows for Fri and Sat. A warm front should approach the waters Sun. 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 pres moves over the waters this afternoon. Low pres approaches the waters from the sw tonight, then passes over the waters Thu bringing strong se winds to the waters. High pres follows for Fri and Sat. A warm front should approach the waters Sun. 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 Tiverton, RI
Hourly EDIT Helplocation: 41.63, -71.21 debug
Area Discussion for - Boston, MA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kbox 201455 afdbox area forecast discussion national weather service boston norton ma 955 am est Wed feb 20 2019 Synopsis Strong high pressure moves off to the east this afternoon. Low pressure from the western gulf of mexico will redevelop along the east coast and move across new england early Thursday. This will bring a period of snow and ice, changing to rain along the coast. High pressure follows Friday and Saturday with a return to dry conditions. Another round of a wintry mix of precipitation is possible Saturday night into Sunday, followed by dry and seasonable conditions next Monday and Tuesday. Near term until 6 pm this evening Cirrostratus layer of clouds over southern new england will thicken this afternoon. Mid level clouds are reaching new york city and the catskills, and should spread northeast this afternoon. Nearest precipitation is south of a philadelphia- central pa line. Snow approaching from pa will run into dry surface layer air, which should cause evaporation of the leading edge of precip, slowing the arrival at the ground. Both current observations and projected vertical temperature profiles suggest a few hours of light snow at the start in ct this evening. A few adjustments to sky cover based on current observations, otherwise no changes. Short term 6 pm this evening through 6 pm Thursday A secondary low pressure is still expected to develop along the east coast tonight, reaching southern new england toward 7 am Thursday. Brunt of the precipitation with this system will fall tonight, but may linger into Thursday morning, especially across the eastern half of southern new england. Any precipitation should be snow this evening early night. Not a lot going for dendritic growth, which will keep snow accumulations on the light side. 20 00z operational guidance, as well as ensemble output, continued to indicate a significant warm nose between 850 and 925 mb. Should see a transition from snow to a mix of sleet and freezing rain, especially after midnight Thursday. Given the threat of freezing rain for a time, expanded the winter weather advisories across most of southern new england. Did not have enough confidence in freezing rain across the CAPE and islands. An advisory may be extended into those areas should confidence in freezing rain increase. Expecting a transition to all rain along the immediate coast, and perhaps a good portion of southern ri and southeast ma. This is one of the areas which may be refined with later forecasts. Weak coastal low pressure should move into the gulf of maine by late Thursday morning. Drier air follow in its wake, leading to improving conditions by afternoon. Colder air is still lagging well to the north, so it will be a relatively mild afternoon with highs reaching the mid 40s to lower 50s. Breezy westerly winds developing in the afternoon with gusts 25-35 mph, especially over higher terrain. Long term Thursday night through Tuesday Highlights... * dry and seasonable Fri sat * another round of wintry mixed precip changing to rain Sat night sun * dry and near seasonable weather returns Mon tue overview... the big picture weather pattern in the extended features more of the same... A reloading west coast trough and persistent subtropical ridge. Several days of high pressure dry weather interrupted by periodic storm systems ejected from the mid level trough and directed over the ridge toward southern new england, first late weekend then again around mid week. Given the consistent pattern going into this weekend we continue to expect a messy winter system with a parent low to the northwest and too much warm air aloft and in the low levels to be a good snow maker. As mentioned by the previous forecaster, one synoptic model continues to show quite the interesting track evolution of the mid week system, but it is much too far out in time to give much consideration to at this time. Thursday night through Saturday... high pressure moving in overnight brings weakening winds, clearing skies, and colder temps moving in on northwest flow with CAA at the sfc and low levels. Temps drop into the 20s... Low 30s along the coast. Friday and Saturday feature plenty of sunshine and seasonable temperatures under a 1030 mb high pressure and plenty of dry air. 850 temps 0 to -5c and good mixing will lead to high temperatures each day in the low 40s... Right around normal for late february. Mid-high clouds will be on the increase from west to east late Saturday as flow becomes southwest ahead of the next storm system. Saturday night through Sunday... Saturday night a shortwave approaches as the surface low moves into the great lakes region, strengthening as it enters canada. A weak secondary wave forms along the frontal boundary over the delmarva and passes over southern new england late Sunday. Ahead of this we have all the ingredients for a wet weather event. Plenty of moisture available as a deep fetch of subtropical moisture stretches up from the gulf brining pwats approaching 1.25". The warm front moves north across the region sometime late Saturday Sunday with a good signal for isentropic lift over the colder air at the surface and strong speed convergence at low levels given an approaching 45-55 kt 925 jet. Currently expecting a mostly rain event, moreso than the previous Wed thu event given warmer surface temperatures ahead of the system. Likely to start out briefly as a wintry mix of snow, sleet, and freezing rain before becoming all rain. Ahead of the cold front temperatures look quite warm, in the upper 40s Sunday afternoon. Monday and Tuesday... behind the cold front dry and colder weather prevails under high pressure for the first half of the work week. Gusty winds on Monday diminish into Tuesday. |
Aviation 15z Wednesday through Sunday Forecaster confidence levels... low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. Short term through Thursday ... High confidence. This afternoon...VFR. Light winds becoming sw tonight... CIGS and vsbys lower after 7 pm west and after 11 pm east. Becoming MVFR in snow, then ifr after midnight in a wintry mix, including sleet and freezing rain. Change to rain expected along the coast 3 am to 6 am. Thursday... Improving conditions from W to e. Ifr to start, becomingVFR by afternoon. Kbos terminal... High confidence in TAF trends. Moderate confidence in timing precipitation type changes after midnight. Kbdl terminal... High confidence in TAF trends. Moderate confidence in timing precipitation type changes after 10 pm. Outlook Thursday night through Sunday ... Thursday night through Friday:VFR. Breezy. Friday night:VFR. Saturday:VFR. Chance ra. Saturday night: mainlyVFR, with local ifr possible. Breezy. Ra, sn likely, fzra. Sunday: mainlyVFR, with areas ifr possible. Breezy. Ra likely, fzra. Marine Forecaster confidence levels... low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. Short term through Thursday ... High confidence. This afternoon... light winds and seas. Tonight... increasing southeast winds, with gusts to 25 kt on the outer waters by morning. Seas building to 5-8 feet by morning. Snow developing 9pm to midnight, changing to sleet freezing rain and then rain by morning. Vsbys occasionally 1-3 miles in precipitation. A small craft advisory may be needed. Thursday... winds shift from the west with gusts 20-25 kt. Seas remain at 5-8 feet. Rain tapers off. Outlook Thursday night through Sunday ... Thursday night: moderate risk for small craft advisory winds with local gusts up to 30 kt. Areas of rough seas. Friday: winds less than 25 kt. Local rough seas. Friday night: winds less than 25 kt. Seas locally approaching 5 ft. Saturday: winds less than 25 kt. Chance of rain. Saturday night: winds less than 25 kt. Seas locally approaching 5 ft. Rain. Sunday: low risk for small craft advisory winds with gusts up to 25 kt. Seas up to 5 ft. Rain likely. Tides coastal flooding High astronomical tides are forecast for both today and thu, with heights around 12 ft at bos and close to 6 ft at pvd. Main concern for Thu is the mid morning high tide in narragansett bay, and the late morning high tide along the east coast. Guidance is suggesting a surge up to 1 ft is possible near high tide which may bring storm tides to near flood stage at pvd and bos. Box watches warnings advisories Ct... Winter weather advisory from 7 pm this evening to 7 am est Thursday for ctz002>004. Ma... Winter weather advisory from 7 pm this evening to 7 am est Thursday for maz002>021-026. Ri... Winter weather advisory from 7 pm this evening to 7 am est Thursday for riz001>007. Marine... Small craft advisory from 2 am to noon est Thursday for anz232>234. Small craft advisory from 2 am to 8 am est Thursday for anz231. Small craft advisory from midnight tonight to 7 pm est Thursday for anz235-237-250-254>256. Synopsis... Wtb belk bw near term... Wtb belk bw short term... Belk long term... Bw aviation... Belk bw marine... Belk bw tides coastal flooding... |
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 |
| FRXM3 | 5 mi | 46 min | 26°F | 7°F | ||||
| BLTM3 - 8447387 - Borden Flats Light at Fall River, MA | 5 mi | 40 min | W 5.1 G 6 | 26°F | 1036.1 hPa | |||
| FRVM3 - 8447386 - Fall River, MA | 6 mi | 40 min | 26°F | 41°F | ||||
| NAXR1 - Narragansett Bay Reserve, RI | 7 mi | 85 min | NW 1.9 | 27°F | 1036 hPa | 7°F | ||
| PTCR1 - 8452951 - Potter Cove, Prudence Island, RI | 7 mi | 46 min | Calm G 4.1 | 27°F | 1036.3 hPa | |||
| CPTR1 - 8452944 - Conimicut Light, RI | 9 mi | 40 min | Calm G 2.9 | 27°F | 36°F | 1036.1 hPa | ||
| NWPR1 - 8452660 - Newport, RI | 11 mi | 40 min | WSW 1.9 G 2.9 | 26°F | 34°F | 1036.2 hPa | ||
| QPTR1 - 8454049 - Quonset Point, RI | 11 mi | 46 min | Calm G 2.9 | 27°F | 38°F | 1036.4 hPa | ||
| PVDR1 | 14 mi | 40 min | Calm G 1.9 | 28°F | 1036 hPa | 6°F | ||
| FOXR1 - 8454000 - Providence, RI | 16 mi | 40 min | NNE 1 G 1.9 | 27°F | 37°F | 1035.4 hPa | ||
| BUZM3 - Buzzards Bay, MA | 19 mi | 70 min | NW 2.9 G 5.1 | 26°F | 1036.5 hPa (-0.4) | |||
| BZBM3 - 8447930 - Woods Hole, MA | 29 mi | 40 min | 27°F | 35°F | 1035.5 hPa | |||
| WAXM3 - Waquoit Bay Reserve, MA | 36 mi | 85 min | W 2.9 | 26°F | 1036 hPa | 5°F | ||
| 44097 - Block Island, RI (154) | 46 mi | 40 min | 42°F | 2 ft | ||||
| 44090 | 49 mi | 100 min | 36°F | 2 ft |
Wind History for Borden Flats Light at Fall River, MA
(wind in knots) EDIT (on/off) Help| 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 | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | |
| Last 24hr | NW G15 | NW | NW G12 | W G18 | W G15 | NW | NW G14 | NW | NW | NW | NW | NW G13 | NW | NW | NW | NW | NW | W | NW | W | NW | NW | W | W |
| 1 day ago | N | N | NW | NW | NW G11 | N | N | N G12 | NW G10 | NW | NW G13 | NW G23 | NW G18 | NW G19 | NW | NW G13 | NW G13 | NW G12 | N | NW | NW G12 | NW G14 | NW G12 | NW |
| 2 days ago | SW | SW | SW | SW | SW | S | S | S | SW | S | SW | S | NE | NE | NE | E | NE | NE | E G11 | N | NE | N | NE | N |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Newport, Newport State Airport, RI | 7 mi | 77 min | Var 3 | 10.00 mi | Fair | 25°F | 9°F | 50% | 1035.7 hPa |
| N. Kingston / Quonset, RI | 11 mi | 80 min | N 0 | 15.00 mi | Overcast | 27°F | 1°F | 33% | 1035.9 hPa |
| New Bedford, New Bedford Regional Airport, MA | 13 mi | 77 min | Var 4 | 10.00 mi | Fair | 27°F | 6°F | 41% | 1035.2 hPa |
| Providence, Theodore Francis Green State Airport, RI | 14 mi | 79 min | Var 3 | 10.00 mi | Overcast | 26°F | 7°F | 44% | 1035.8 hPa |
| Taunton, Taunton Municipal Airport, MA | 21 mi | 78 min | Var 4 | 10.00 mi | Fair | 26°F | 5°F | 40% | 1035.4 hPa |
| Pawtucket, North Central State Airport, RI | 22 mi | 74 min | N 0 | 10.00 mi | Fair | 27°F | 9°F | 46% | 1030 hPa |
Wind History from UUU (wind in knots)
| 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 | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | |
| Last 24hr | N | NW | NW | NW G18 | W | W G14 | W | NW | NW | NW | NW | NW | NW | NW | NW | N | W | NW | NW | N | N | W | ||
| 1 day ago | N | N | NW | NW | NW | NW | N | N | N | NW G26 | NW G23 | NW G24 | NW G27 | NW G25 | NW G21 | NW G21 | NW G21 | NW G21 | NW G21 | NW | NW | NW G19 | NW G19 | NW |
| 2 days ago | W | S | S | S | SW | Calm | S | S | Calm | Calm | NE | NE | E | E | E | E | N | E | NE | NE | N |
Tide / Current Tables for Anthony Point, Sakonnet River, Narragansett Bay, Rhode Island
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of DataAnthony Point
Click for Map
Wed -- 01:29 AM EST -1.18 feet Low Tide
Wed -- 06:33 AM EST Sunrise
Wed -- 07:25 AM EST Moonset
Wed -- 08:04 AM EST 5.10 feet High Tide
Wed -- 02:01 PM EST -1.08 feet Low Tide
Wed -- 05:24 PM EST Sunset
Wed -- 06:49 PM EST Moonrise
Wed -- 08:28 PM EST 4.87 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 01:29 AM EST -1.18 feet Low Tide
Wed -- 06:33 AM EST Sunrise
Wed -- 07:25 AM EST Moonset
Wed -- 08:04 AM EST 5.10 feet High Tide
Wed -- 02:01 PM EST -1.08 feet Low Tide
Wed -- 05:24 PM EST Sunset
Wed -- 06:49 PM EST Moonrise
Wed -- 08:28 PM EST 4.87 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 |
| -0.4 | -1.1 | -1.1 | -0.5 | 0.5 | 1.9 | 3.3 | 4.6 | 5.1 | 4.7 | 3.4 | 1.8 | 0.3 | -0.7 | -1.1 | -0.8 | -0 | 1.2 | 2.6 | 3.9 | 4.8 | 4.7 | 3.8 | 2.3 |
Tide / Current Tables for Westport River Entrance, Massachusetts Current
EDIT (on/off) Help One Week of DataWestport River Entrance
Click for Map
Wed -- 02:55 AM EST 0.00 knots Slack
Wed -- 06:30 AM EST 2.31 knots Max Flood
Wed -- 06:32 AM EST Sunrise
Wed -- 07:24 AM EST Moonset
Wed -- 08:47 AM EST -0.00 knots Slack
Wed -- 11:21 AM EST -3.09 knots Max Ebb
Wed -- 03:08 PM EST 0.00 knots Slack
Wed -- 05:23 PM EST Sunset
Wed -- 06:49 PM EST Moonrise
Wed -- 06:55 PM EST 2.75 knots Max Flood
Wed -- 09:23 PM EST -0.01 knots Slack
Wed -- 11:52 PM EST -2.94 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 02:55 AM EST 0.00 knots Slack
Wed -- 06:30 AM EST 2.31 knots Max Flood
Wed -- 06:32 AM EST Sunrise
Wed -- 07:24 AM EST Moonset
Wed -- 08:47 AM EST -0.00 knots Slack
Wed -- 11:21 AM EST -3.09 knots Max Ebb
Wed -- 03:08 PM EST 0.00 knots Slack
Wed -- 05:23 PM EST Sunset
Wed -- 06:49 PM EST Moonrise
Wed -- 06:55 PM EST 2.75 knots Max Flood
Wed -- 09:23 PM EST -0.01 knots Slack
Wed -- 11:52 PM EST -2.94 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 |
| -2.5 | -1.7 | -0.8 | 0.1 | 0.9 | 1.7 | 2.2 | 2.2 | 1.3 | -0.4 | -2.1 | -3 | -2.9 | -2.1 | -1.2 | -0.1 | 0.9 | 1.8 | 2.5 | 2.7 | 2.2 | 0.8 | -1.1 | -2.6 |
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 Boston, MA (12,3,4,5)
(on/off) Help
Ground Weather Radar Station Boston, MA
(on/off) Help
Ad by Google
|
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. |