Marine Weather and Tide Forecast for Cambridge, MA
November 28, 2023 5:09 PM EST (22:09 UTC)
Sunrise 6:49AM Sunset 4:15PM Moonrise 5:58PM Moonset 9:25AM
ANZ230 Boston Harbor- 401 Pm Est Tue Nov 28 2023
.small craft advisory in effect until 1 am est Wednesday...
Tonight..W winds 15 to 20 kt with gusts up to 30 kt. Waves around 2 ft.
Wed..W winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft.
Wed night..SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft.
Thu..SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Waves around 2 ft in the morning, then 1 foot or less.
Thu night..SW winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Waves around 2 ft.
Fri and Fri night..NW winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. Showers likely.
Sat and Sat night..NE winds 5 to 10 kt, becoming e.
Sun and Sun night..NE winds 10 to 15 kt, becoming n. Gusts up to 25 kt. 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.
.small craft advisory in effect until 1 am est Wednesday...
Tonight..W winds 15 to 20 kt with gusts up to 30 kt. Waves around 2 ft.
Wed..W winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft.
Wed night..SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft.
Thu..SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Waves around 2 ft in the morning, then 1 foot or less.
Thu night..SW winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Waves around 2 ft.
Fri and Fri night..NW winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. Showers likely.
Sat and Sat night..NE winds 5 to 10 kt, becoming e.
Sun and Sun night..NE winds 10 to 15 kt, becoming n. Gusts up to 25 kt. 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.
ANZ200 401 Pm Est Tue Nov 28 2023
Synopsis for massachusetts and rhode island coastal waters.. High pressure builds to our south, while low pressure passes by well to our north, resulting in breezy westerly winds through Thursday. Low pressure moves across the region late Friday and early Saturday.
Synopsis for massachusetts and rhode island coastal waters.. High pressure builds to our south, while low pressure passes by well to our north, resulting in breezy westerly winds through Thursday. Low pressure moves across the region late Friday and early Saturday.
Area Discussion for - Boston, MA
(on/off) HelpNOTE: mouseover dotted underlined text for definition
FXUS61 KBOX 281941 AFDBOX
Area Forecast Discussion National Weather Service Boston/Norton MA 241 PM EST Tue Nov 28 2023
SYNOPSIS
Dry and blustery conditions continue tonight into tomorrow with unseasonably chilly conditions. Dry with seasonable temperatures on Thursday. Quick shot of rain later on Friday into early Saturday. High pressure returns later on Saturday.
Another round of unsettled weather Sunday or early next week, but details are uncertain at this point.
NEAR TERM /THROUGH TONIGHT/
240PM Update
Tonight
Any remaining instability driven rain/snow showers taper off early this evening. Deep west/northwest flow continues to support strong CAA over southern New England tonight into Wednesday morning. This will allow 925 hPa temps to fall to between -8 and -10 Celsius.
While skies will be clear with a bone dry air mass in place, the gradient wind will support mechanical mixing that will prevent efficient radiational cooling overnight. Nonetheless, most location across southern New England will experience overnight low temperatures in the upper teens to low 20sF. Furthermore, with gusty west/northwest winds there will be a wind chill effect that will make temps feel closer to the low to mid teens.
SHORT TERM /WEDNESDAY THROUGH WEDNESDAY NIGHT/
Tomorrow
West/northwest winds begin to weaken and shift to west/southwest as a mid-level ridge axis builds east of southern New England. Air mass remains anomalously cold with persistent -8 Celsius temps at 925 hPa through tomorrow afternoon. This will keep afternoon high temperatures in the mid to upper 30s across most of southern New England with a few locations in southeastern MA and RI perhaps touching 40. PWATs less than 0.2 inches will limit any significant cloud cover aside from a few diurnally driven low to mid clouds, so despite the cold temperatures there will be plenty of sunshine tomorrow. Low-level jet will not be as robust as it was on Tuesday, so despite a well mixed boundary layer, we're only expecting a steady 10 to 15 mph west/southwest wind to prevail through tomorrow afternoon.
Tomorrow Night
Weather remains quiet tomorrow night. Southwest winds advect slightly warmer air into southern New England tomorrow night allowing for a slight uptick in overnight low temps in the low to mid 20s. West/southwest winds become more modest in the 5 to 10 mph range. Some hi-res model solutions are hinting at the potential for some ocean effect rain/snow showers over the outer Cape/Islands. Confidence too low to include any slight chance PoPs, but will be something to monitor over the next 12 to 24 hours.
LONG TERM /THURSDAY THROUGH MONDAY/
Highlights
* Temperatures generally near to slightly below normal
* Rain later on Fri into Sat with near to above normal temps.
* Turning drier Sat. Next shot for unsettled weather comes Sun and/or early next week.
Have average confidence in the details of the overall synoptic pattern into Friday. After then, confidence diminishes rapidly. The main synoptic features in the mid levels will be a near climatological minimum low over Hudson Bay, and broad longwave trough expected to develop late this week over the western USA. The evolution of this longwave trough as it moves into the central CONUS is fraught with uncertainty, especially with respect to timing.
Favored the NationalBlend for this weekend into early next week to take advantage of its ensembled approach.
At the surface, high pressure over the SE USA and northern tier of the USA will also play a role. The SE high pressure should move offshore late this week, opening the door for a low pressure traversing a front to shoot the gap between it and the northern high pressure. Looking like there should be a period of wet weather sometime Friday into Friday night. Another period of wet weather is anticipated sometime Saturday night into early next week. Given the timing uncertainties, maintained a broad period precipitation chances, but am not thinking it will be ongoing this entire time.
While temperatures are anticipated to be near to slightly below normal, thinking that they will be high enough to result in rainfall late this week. Some potential for some light snowfall across the higher elevations of interior southern New England, especially if the precipitation can fall at night. Too much uncertainty in the details to pin that down at this time.
Ensembled data depicts a rather gusty stretch, but not uncommon in southern New England for this time of year. Thinking one should be Thursday night into Friday as we get the squeeze play between the two surface high pressures. Another period could be sometime early next week as a coastal low pressure moves off the Mid Atlantic coast. These aspects of the forecast will need to be refined with later forecasts.
AVIATION /20Z TUESDAY THROUGH SUNDAY/
Forecast Confidence Levels:
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
18Z TAF Update
Through 00Z...High Confidence
SCT to BKN mid-level cloudiness with cloud bases around 5000 feet. Steady west/northwest winds 10 to 15 knots with 20+ knot wind gusts at ORH and at terminals near the coast. Some isolated snow showers possible at times this afternoon, but with very limited impacts.
Tonight...High confidence.
Any scattered shower activity tapers off roughly 23-03Z. Dry weather expected afterward with west winds 15-20 kt, gusting up to 30 kt at times across Cape Cod and Islands.
Tomorrow...High confidence.
VFR cloud bases along with mainly dry weather. WSW winds 10-15 kt, possibly gusting up to 20 kt over Cape Cod and the Islands.
Tomorrow Night...High Confidence.
VFR. Southwest winds 5 to 10 knots.
KBOS Terminal...High confidence in TAF. Isolated snow shower with graupel possible this afternoon/early evening.
KBDL Terminal...High confidence in TAF. Isolated snow shower with graupel possible this afternoon/early evening.
Outlook /Thursday through Saturday/...
Wednesday Night through Thursday Night: VFR. Breezy.
Friday: Mainly VFR, with local MVFR possible. Breezy. SHRA likely.
Friday Night: Mainly VFR, with local IFR possible. SHRA likely.
Saturday: Mainly VFR, with areas MVFR possible. Slight chance SHRA.
MARINE
Forecaster Confidence Levels:
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Tonight
Gale force winds over the outer south coastal marine zones with gusts up to 40 knots and seas up to 8 feet possible. Elsewhere, expect 25 to 30 knot gusts out of the west/northwest with seas ranging from 3 to 6 feet.
Tomorrow and Tomorrow Night
Winds become more west/southwest by tomorrow afternoon but remain steady around 15 knots with higher gusts. Seas subside to 3 to 5 feet across the coastal waters. Some ocean effect rain/snow showers may be possible over the south coastal waters tomorrow night.
Outlook /Thursday through Saturday/...
Wednesday Night: Low risk for Small Craft Advisory winds with gusts up to 20 kt. Areas of seas approaching 5 ft.
Thursday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Thursday Night: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Seas up to 5 ft.
Friday: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Areas of seas approaching 5 ft. Chance of rain showers.
Friday Night: Winds less than 25 kt. Seas locally approaching 5 ft. Rain showers.
Saturday: Winds less than 25 kt. Areas of seas approaching 5 ft.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 1 AM EST Wednesday for ANZ230-236.
Small Craft Advisory until 10 AM EST Wednesday for ANZ231>235- 237-250-251-254.
Gale Warning until 7 AM EST Wednesday for ANZ255-256.
Area Forecast Discussion National Weather Service Boston/Norton MA 241 PM EST Tue Nov 28 2023
SYNOPSIS
Dry and blustery conditions continue tonight into tomorrow with unseasonably chilly conditions. Dry with seasonable temperatures on Thursday. Quick shot of rain later on Friday into early Saturday. High pressure returns later on Saturday.
Another round of unsettled weather Sunday or early next week, but details are uncertain at this point.
NEAR TERM /THROUGH TONIGHT/
240PM Update
Tonight
Any remaining instability driven rain/snow showers taper off early this evening. Deep west/northwest flow continues to support strong CAA over southern New England tonight into Wednesday morning. This will allow 925 hPa temps to fall to between -8 and -10 Celsius.
While skies will be clear with a bone dry air mass in place, the gradient wind will support mechanical mixing that will prevent efficient radiational cooling overnight. Nonetheless, most location across southern New England will experience overnight low temperatures in the upper teens to low 20sF. Furthermore, with gusty west/northwest winds there will be a wind chill effect that will make temps feel closer to the low to mid teens.
SHORT TERM /WEDNESDAY THROUGH WEDNESDAY NIGHT/
Tomorrow
West/northwest winds begin to weaken and shift to west/southwest as a mid-level ridge axis builds east of southern New England. Air mass remains anomalously cold with persistent -8 Celsius temps at 925 hPa through tomorrow afternoon. This will keep afternoon high temperatures in the mid to upper 30s across most of southern New England with a few locations in southeastern MA and RI perhaps touching 40. PWATs less than 0.2 inches will limit any significant cloud cover aside from a few diurnally driven low to mid clouds, so despite the cold temperatures there will be plenty of sunshine tomorrow. Low-level jet will not be as robust as it was on Tuesday, so despite a well mixed boundary layer, we're only expecting a steady 10 to 15 mph west/southwest wind to prevail through tomorrow afternoon.
Tomorrow Night
Weather remains quiet tomorrow night. Southwest winds advect slightly warmer air into southern New England tomorrow night allowing for a slight uptick in overnight low temps in the low to mid 20s. West/southwest winds become more modest in the 5 to 10 mph range. Some hi-res model solutions are hinting at the potential for some ocean effect rain/snow showers over the outer Cape/Islands. Confidence too low to include any slight chance PoPs, but will be something to monitor over the next 12 to 24 hours.
LONG TERM /THURSDAY THROUGH MONDAY/
Highlights
* Temperatures generally near to slightly below normal
* Rain later on Fri into Sat with near to above normal temps.
* Turning drier Sat. Next shot for unsettled weather comes Sun and/or early next week.
Have average confidence in the details of the overall synoptic pattern into Friday. After then, confidence diminishes rapidly. The main synoptic features in the mid levels will be a near climatological minimum low over Hudson Bay, and broad longwave trough expected to develop late this week over the western USA. The evolution of this longwave trough as it moves into the central CONUS is fraught with uncertainty, especially with respect to timing.
Favored the NationalBlend for this weekend into early next week to take advantage of its ensembled approach.
At the surface, high pressure over the SE USA and northern tier of the USA will also play a role. The SE high pressure should move offshore late this week, opening the door for a low pressure traversing a front to shoot the gap between it and the northern high pressure. Looking like there should be a period of wet weather sometime Friday into Friday night. Another period of wet weather is anticipated sometime Saturday night into early next week. Given the timing uncertainties, maintained a broad period precipitation chances, but am not thinking it will be ongoing this entire time.
While temperatures are anticipated to be near to slightly below normal, thinking that they will be high enough to result in rainfall late this week. Some potential for some light snowfall across the higher elevations of interior southern New England, especially if the precipitation can fall at night. Too much uncertainty in the details to pin that down at this time.
Ensembled data depicts a rather gusty stretch, but not uncommon in southern New England for this time of year. Thinking one should be Thursday night into Friday as we get the squeeze play between the two surface high pressures. Another period could be sometime early next week as a coastal low pressure moves off the Mid Atlantic coast. These aspects of the forecast will need to be refined with later forecasts.
AVIATION /20Z TUESDAY THROUGH SUNDAY/
Forecast Confidence Levels:
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
18Z TAF Update
Through 00Z...High Confidence
SCT to BKN mid-level cloudiness with cloud bases around 5000 feet. Steady west/northwest winds 10 to 15 knots with 20+ knot wind gusts at ORH and at terminals near the coast. Some isolated snow showers possible at times this afternoon, but with very limited impacts.
Tonight...High confidence.
Any scattered shower activity tapers off roughly 23-03Z. Dry weather expected afterward with west winds 15-20 kt, gusting up to 30 kt at times across Cape Cod and Islands.
Tomorrow...High confidence.
VFR cloud bases along with mainly dry weather. WSW winds 10-15 kt, possibly gusting up to 20 kt over Cape Cod and the Islands.
Tomorrow Night...High Confidence.
VFR. Southwest winds 5 to 10 knots.
KBOS Terminal...High confidence in TAF. Isolated snow shower with graupel possible this afternoon/early evening.
KBDL Terminal...High confidence in TAF. Isolated snow shower with graupel possible this afternoon/early evening.
Outlook /Thursday through Saturday/...
Wednesday Night through Thursday Night: VFR. Breezy.
Friday: Mainly VFR, with local MVFR possible. Breezy. SHRA likely.
Friday Night: Mainly VFR, with local IFR possible. SHRA likely.
Saturday: Mainly VFR, with areas MVFR possible. Slight chance SHRA.
MARINE
Forecaster Confidence Levels:
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Tonight
Gale force winds over the outer south coastal marine zones with gusts up to 40 knots and seas up to 8 feet possible. Elsewhere, expect 25 to 30 knot gusts out of the west/northwest with seas ranging from 3 to 6 feet.
Tomorrow and Tomorrow Night
Winds become more west/southwest by tomorrow afternoon but remain steady around 15 knots with higher gusts. Seas subside to 3 to 5 feet across the coastal waters. Some ocean effect rain/snow showers may be possible over the south coastal waters tomorrow night.
Outlook /Thursday through Saturday/...
Wednesday Night: Low risk for Small Craft Advisory winds with gusts up to 20 kt. Areas of seas approaching 5 ft.
Thursday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Thursday Night: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Seas up to 5 ft.
Friday: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Areas of seas approaching 5 ft. Chance of rain showers.
Friday Night: Winds less than 25 kt. Seas locally approaching 5 ft. Rain showers.
Saturday: Winds less than 25 kt. Areas of seas approaching 5 ft.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 1 AM EST Wednesday for ANZ230-236.
Small Craft Advisory until 10 AM EST Wednesday for ANZ231>235- 237-250-251-254.
Gale Warning until 7 AM EST Wednesday for ANZ255-256.
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| BHBM3 - 8443970 - Boston, MA | 3 mi | 52 min | 37°F | 29.72 | ||||
| 44013 - BOSTON 16 NM East of Boston, MA | 24 mi | 40 min | W 19G | 38°F | 50°F | 29.72 | 20°F | |
| 44029 - Buoy A0102 - Mass. Bay/Stellwagen | 31 mi | 126 min | WNW 21G | 39°F | 50°F | 29.68 | ||
| FOXR1 - 8454000 - Providence, RI | 41 mi | 52 min | WNW 4.1G | 35°F | 44°F | 29.76 | ||
| PVDR1 | 42 mi | 52 min | W 2.9G | 35°F | 29.78 | 16°F | ||
| BLTM3 - 8447387 - Borden Flats Light at Fall River, MA | 45 mi | 52 min | W 19G | 37°F | 29.77 | |||
| FRVM3 - 8447386 - Fall River, MA | 45 mi | 52 min | 37°F | 47°F | 29.78 | |||
| CPTR1 - 8452944 - Conimicut Light, RI | 46 mi | 52 min | WSW 14G | 34°F | 48°F | 29.76 | ||
| FRXM3 | 46 mi | 52 min | 37°F | 23°F | ||||
| IOSN3 - Isle of Shoals, NH | 49 mi | 70 min | W 26G | 36°F | 29.64 | 3°F |
toggle option: (graph/table)
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| KBOS GENERAL EDWARD LAWRENCE LOGAN INTL,MA | 5 sm | 15 min | W 17G23 | 10 sm | A Few Clouds | 36°F | 10°F | 35% | 29.75 | |
| KBED LAURENCE G HANSCOM FLD,MA | 12 sm | 18 min | W 10G17 | 10 sm | Clear | 32°F | 10°F | 40% | 29.74 | |
| KOWD NORWOOD MEMORIAL,MA | 12 sm | 16 min | W 11G17 | 10 sm | Clear | 36°F | 10°F | 35% | 29.77 | |
| KBVY BEVERLY RGNL,MA | 18 sm | 16 min | W 11G19 | 10 sm | Clear | 32°F | 10°F | 40% | 29.73 |
Wind History from BOS
(wind in knots)Tide / Current for Charles River Dam, Charles River, Massachusetts
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Charles River Dam
Click for Map
Tue -- 05:16 AM EST 0.37 feet Low Tide
Tue -- 06:50 AM EST Sunrise
Tue -- 08:24 AM EST Moonset
Tue -- 11:30 AM EST 11.27 feet High Tide
Tue -- 04:13 PM EST Sunset
Tue -- 04:57 PM EST Moonrise
Tue -- 05:56 PM EST -0.87 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 05:16 AM EST 0.37 feet Low Tide
Tue -- 06:50 AM EST Sunrise
Tue -- 08:24 AM EST Moonset
Tue -- 11:30 AM EST 11.27 feet High Tide
Tue -- 04:13 PM EST Sunset
Tue -- 04:57 PM EST Moonrise
Tue -- 05:56 PM EST -0.87 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Charles River Dam, Charles River, Massachusetts, Tide feet
| 12 am |
| 9.6 |
| 1 am |
| 8.4 |
| 2 am |
| 6.4 |
| 3 am |
| 4 |
| 4 am |
| 1.7 |
| 5 am |
| 0.4 |
| 6 am |
| 0.8 |
| 7 am |
| 2.4 |
| 8 am |
| 4.7 |
| 9 am |
| 7.3 |
| 10 am |
| 9.7 |
| 11 am |
| 11.1 |
| 12 pm |
| 11.1 |
| 1 pm |
| 9.9 |
| 2 pm |
| 7.7 |
| 3 pm |
| 5 |
| 4 pm |
| 2.1 |
| 5 pm |
| -0.1 |
| 6 pm |
| -0.9 |
| 7 pm |
| -0.1 |
| 8 pm |
| 1.7 |
| 9 pm |
| 4.1 |
| 10 pm |
| 6.6 |
| 11 pm |
| 8.7 |
Boston Harbor
Click for Map
Tue -- 02:49 AM EST -1.28 knots Max Ebb
Tue -- 05:08 AM EST 0.00 knots Slack
Tue -- 06:49 AM EST Sunrise
Tue -- 08:20 AM EST 1.35 knots Max Flood
Tue -- 08:23 AM EST Moonset
Tue -- 11:05 AM EST -0.00 knots Slack
Tue -- 03:14 PM EST -1.44 knots Max Ebb
Tue -- 04:13 PM EST Sunset
Tue -- 04:57 PM EST Moonrise
Tue -- 05:41 PM EST 0.00 knots Slack
Tue -- 08:53 PM EST 1.28 knots Max Flood
Tue -- 11:37 PM EST -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 02:49 AM EST -1.28 knots Max Ebb
Tue -- 05:08 AM EST 0.00 knots Slack
Tue -- 06:49 AM EST Sunrise
Tue -- 08:20 AM EST 1.35 knots Max Flood
Tue -- 08:23 AM EST Moonset
Tue -- 11:05 AM EST -0.00 knots Slack
Tue -- 03:14 PM EST -1.44 knots Max Ebb
Tue -- 04:13 PM EST Sunset
Tue -- 04:57 PM EST Moonrise
Tue -- 05:41 PM EST 0.00 knots Slack
Tue -- 08:53 PM EST 1.28 knots Max Flood
Tue -- 11:37 PM EST -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Boston Harbor, Massachusetts Current, knots
| 12 am |
| -0.6 |
| 1 am |
| -1 |
| 2 am |
| -1.2 |
| 3 am |
| -1.3 |
| 4 am |
| -1 |
| 5 am |
| -0.1 |
| 6 am |
| 0.8 |
| 7 am |
| 1.2 |
| 8 am |
| 1.3 |
| 9 am |
| 1.3 |
| 10 am |
| 0.8 |
| 11 am |
| 0.1 |
| 12 pm |
| -0.5 |
| 1 pm |
| -1 |
| 2 pm |
| -1.3 |
| 3 pm |
| -1.4 |
| 4 pm |
| -1.3 |
| 5 pm |
| -0.7 |
| 6 pm |
| 0.3 |
| 7 pm |
| 1 |
| 8 pm |
| 1.2 |
| 9 pm |
| 1.3 |
| 10 pm |
| 1 |
| 11 pm |
| 0.4 |
Boston, MA,
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