Narragansett Bay Marine Forecast
| Tonight...S Winds Around 5 Kt. Waves 1 Foot Or Less. |
| Tue...Se Winds 5 To 10 Kt. Waves Around 2 Ft. A Chance Of Snow In The Morning, Then Rain And Snow In The Afternoon. |
| Tue Night...S Winds 5 To 10 Kt, Becoming W With Gusts Up To 20 Kt After Midnight. Waves 2 To 3 Ft. Rain. |
| Wed...Nw Winds Around 5 Kt, Becoming Sw Around 5 Kt In The Afternoon. Waves 2 To 3 Ft. |
| Wed Night...Sw Winds Around 5 Kt. Waves 2 To 3 Ft. |
| Thu...Sw Winds Around 5 Kt, Becoming E Around 5 Kt In The Afternoon. Waves Around 2 Ft. A Chance Of Rain. |
| Thu Night...Ne Winds 5 To 10 Kt, Increasing To 10 To 15 Kt After Midnight. Waves Around 2 Ft. A Chance Of Rain In The Evening, Then Rain Likely After Midnight. |
| Fri...Ne Winds 10 To 15 Kt With Gusts Up To 20 Kt. Waves 2 To 3 Ft. Rain Likely. |
| Fri Night And Sat...Ne Winds 10 To 15 Kt, Becoming S With Gusts Up To 20 Kt. Waves 2 To 3 Ft. |
| Sat Night...Sw Winds 10 To 15 Kt With Gusts Up To 20 Kt. Waves 2 To 3 Ft. A Chance Of Rain. 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. |
| Area Forecast Discussion National Weather Service Boston/Norton MA 644pm EST Monday Mar 2 2026 .WHAT HAS CHANGED... Winter Weather Advisories posted for Tuesday afternoon to Wednesday morning for interior Southern New England for light accretion of icing and minor snow and sleet accumulation. There is also increasing confidence on a period of a wintry mix Thursday night into Friday across northern MA. .KEY MESSAGES... - Wintry mix of snow, sleet and freezing rain brings slippery roads to interior Southern New England Tuesday afternoon and evening; brief wet snow changes to plain rain and minimal to nil impact for the MA/RI coastal plain. - Dry and very pleasant weather arrives Wednesday, feeling mild with March sunshine, light winds and highs in the upper 40s to lower 50s. - A period of wintry precipitation remains possible Thu night into early Fri. - Pattern change towards milder weather this weekend and potentially warmer next week. 215pm Update: KEY MESSAGE 1...Wintry mix of snow, sleet and freezing rain brings slippery roads to interior Southern New England Tuesday afternoon and evening; brief wet snow changes to plain rain and minimal to nil impact for the MA/RI coastal plain. Quasi-stationary frontal boundary lying across the OH Valley and mid- Atlantic Piedmont region will lift northward on Tue, spreading clouds and warm-frontal precipitation northward into Southern New England Tuesday starting mainly during the early to mid-afternoon hours. This precipitation will be falling into a retreating modified-Arctic airmass coming out of another chilly night tonight. However the combination of onshore/east flow and associated warming surface temps along the coastal plain to go along with limited surface heating before turning overcast during the morning hours could offset evaporative/wet-bulb cooling until precipitation arrives. Given the now-delayed arrival of precipitation and questions on how soon arrival of clouds come in, how cold surface temps could still prove to be a challenge; utilized some of the colder 2-m temps given the potential for wet-bulbing which model-blended solutions tend to wash out or not resolve as well. We still expect a wintry mix of snow/sleet/freezing rain in interior Southern New England during the afternoon and evening hours where winter weather advisories have been posted from Tuesday noontime til early Wednesday morning. The main impact in those areas is from icing, with up to a tenth of an inch of ice accretion, and up to an inch of combined snow/sleet accumulation at outset. It is somewhat debatable/uncertain how much road impact there may be during the Tuesday afternoon drive, and that's especially the case if cloud cover is slow to arrive and ends up permitting several hours of strong early-March sun to warm up pavement; feel more confident in at least slippery road conditions developing by the early evening hours, as temps hover or slightly cool on light NE drainage winds which will help sustain frozen p-types in interior Southern New England until precipitation comes to an end Wednesday morning. In the coastal plain, a brief period of wet snow during the early to mid afternoon Tuesday should mix over with rain with temps in the mid 30s, then change to a plain rain for the remainder of the evening where adverse road impacts should prove minimal. KEY MESSAGE 2...Dry and very pleasant weather arrives Wednesday, feeling mild with March sunshine, light winds and highs in the upper 40s to lower 50s. Short wave ridging in fast flow aloft advects across SNE, providing a very pleasant, dry Wednesday across SNE. Mild with highs in the upper 40s and low 50s. It feel even milder given light winds and full March sunshine. KEY MESSAGE 3...A period of wintry precipitation remains possible Thu night into early Fri. Fast, wavy zonal upper air pattern yields the next precipitation event for SNE Thu night into Fri. 1040 mb anticyclone over southeast Quebec into the Maritimes will yield a wedge of shallow cold air into SNE. This will support the risk of a wintry mix this period, with highest probs of an icy mix across northern MA. It's possible this shallow cold air could bleed farther south, with a low risk of a wintry mix near or into the I-95 corridor. Just too early to tell, this needs to be watched. Not a major winter event, but it only takes a small amount of ice to impact travel. Stay tuned. KEY MESSAGE 4...Pattern change toward milder weather this weekend and potentially warmer next week. Good multi-model agreement on a pattern change beginning this weekend and continuing into next week, with a southeast/western Atlantic ridge. This will promote SW up the eastern seaboard into SNE, with temps rising into the low 50s Saturday, and possibly low 60s away from the south coast Sunday and Monday. Dew pts will be rising into the low 50s then, so definitely a mild feel to the airmass, along with accelerating the erosion of the the snow pack with dew pts rising into the 50s and SW winds 10-15 mph providing some mixing around the snowcover. Marine Forecaster Confidence Levels... Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. Through Tuesday Night...High confidence. Winds and seas remain below small craft advisory thresholds through at least Tuesday afternoon, with south to southeast winds around 10-15 kt. Seas may begin to build late Tuesday night into Wednesday to around 4-6 ft on the southeast outer waters, which could prompt small craft advisories. Reduced visibilities possible in snow to rain Tuesday afternoon. Outlook /Tuesday Night through Saturday/... Wednesday: Winds less than 25 kt. Seas up to 5 ft. Slight chance of rain, slight chance of freezing rain. Wednesday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Slight chance of rain. Thursday: Winds less than 25 kt. Seas locally approaching 5 ft. Chance of rain. Thursday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Rain likely. Friday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of rough seas. Rain likely. Friday Night through Saturday: Winds less than 25 kt. Areas of rough seas. Slight chance of rain. NOAA Boston MA Office: Watches - Warnings - Advisories CT...Winter Weather Advisory from noon Tuesday to 7am EST Wednesday for CTZ002>004. MA...Winter Weather Advisory from noon Tuesday to 7am EST Wednesday for MAZ002>012-014-026. RI...Winter Weather Advisory from noon Tuesday to 7am EST Wednesday for RIZ001. Marine None. |
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