Marine Weather and Tide Forecast for Popponesset Island, MA
February 17, 2025 5:25 AM EST (10:25 UTC) Change Location
![]() | Sunrise 6:31 AM Sunset 5:18 PM Moonrise 11:37 PM Moonset 9:35 AM |
ANZ232 Nantucket Sound- 405 Am Est Mon Feb 17 2025
.gale warning in effect through Tuesday evening - .
.freezing spray advisory in effect from this evening through Wednesday morning - .
Today - W winds 30 to 35 kt with gusts up to 45 kt. Seas 6 to 8 ft. Wave detail: W 6 ft at 5 seconds and sw 3 ft at 12 seconds. Light freezing spray.
Tonight - W winds 30 to 35 kt, diminishing to 25 to 30 kt after midnight. Gusts up to 45 kt. Seas 5 to 7 ft. Wave detail: W 6 ft at 5 seconds and sw 3 ft at 11 seconds. Freezing spray.
Tue - W winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to 6 ft. Wave detail: W 5 ft at 5 seconds and sw 3 ft at 10 seconds. Freezing spray.
Tue night - W winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Seas 4 to 5 ft. Wave detail: W 5 ft at 5 seconds and N 1 foot at 8 seconds. Light freezing spray in the evening, then a chance of freezing spray after midnight.
Wed - NW winds 15 to 20 kt with gusts up to 25 kt, becoming W 10 to 15 kt in the afternoon. Seas 2 to 4 ft. Wave detail: nw 4 ft at 5 seconds and sw 1 foot at 8 seconds. A chance of freezing spray in the morning.
Wed night - W winds 5 to 10 kt, becoming nw after midnight. Seas 1 foot or less. Wave detail: nw 1 foot at 5 seconds and S 1 foot at 9 seconds.
Thu - N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of snow.
Thu night - NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of light freezing spray. Snow likely. Vsby 1 nm or less.
Fri - NW winds 15 to 20 kt. Seas 2 to 4 ft. A chance of light freezing spray.
Fri night - NW winds 10 to 15 kt. Seas 2 to 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.
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 405 Am Est Mon Feb 17 2025
Synopsis for massachusetts and rhode island coastal waters - Low pressure strengthens over the canadian maritimes today. Behind the low, storm force west winds are expected today across the waters of ma and ri. These very strong winds combined with Frigid temperatures will result in moderate to freezing spray today and Tuesday. Storms lower to gales Tuesday and then significantly diminish Wednesday, as high pressure briefly builds over the waters. Then Thursday, all eyes turn to low pressure emerging off the mid atlantic coast, with rapid intensification possible. At this time its exact track is uncertain, but certainly could develop into another storm. Behind the departing low, dry but cold nw flow overspreads the ma/ri waters.

NEW! Add second zone forecast
Poponesset Island Click for Map Mon -- 04:06 AM EST 2.28 feet High Tide Mon -- 06:33 AM EST Sunrise Mon -- 08:35 AM EST Moonset Mon -- 10:05 AM EST 0.16 feet Low Tide Mon -- 04:26 PM EST 2.19 feet High Tide Mon -- 05:18 PM EST Sunset Mon -- 10:21 PM EST 0.22 feet Low Tide Mon -- 10:36 PM EST Moonrise Tide / Current data from XTide NOT FOR NAVIGATION |   |
Poponesset Island, Poponesset Bay, Nantucket Sound, Massachusetts, Tide feet
12 am |
0.8 |
1 am |
1.2 |
2 am |
1.7 |
3 am |
2.1 |
4 am |
2.3 |
5 am |
2.2 |
6 am |
1.8 |
7 am |
1.3 |
8 am |
0.8 |
9 am |
0.4 |
10 am |
0.2 |
11 am |
0.3 |
12 pm |
0.6 |
1 pm |
1 |
2 pm |
1.5 |
3 pm |
1.9 |
4 pm |
2.2 |
5 pm |
2.1 |
6 pm |
1.9 |
7 pm |
1.4 |
8 pm |
1 |
9 pm |
0.5 |
10 pm |
0.2 |
11 pm |
0.3 |
Cape Cod Canal Click for Map Mon -- 12:24 AM EST -0.10 knots Slack Mon -- 03:14 AM EST -4.21 knots Max Ebb Mon -- 06:14 AM EST 0.03 knots Slack Mon -- 06:34 AM EST Sunrise Mon -- 08:35 AM EST Moonset Mon -- 09:13 AM EST 4.00 knots Max Flood Mon -- 12:35 PM EST -0.17 knots Slack Mon -- 03:33 PM EST -4.24 knots Max Ebb Mon -- 05:18 PM EST Sunset Mon -- 06:36 PM EST 0.01 knots Slack Mon -- 09:34 PM EST 3.95 knots Max Flood Mon -- 10:37 PM EST Moonrise Tide / Current data from XTide NOT FOR NAVIGATION |   |
Cape Cod Canal, Massachusetts Current, knots
12 am |
1.8 |
1 am |
-2.3 |
2 am |
-3.7 |
3 am |
-4.2 |
4 am |
-4 |
5 am |
-3.2 |
6 am |
-1.4 |
7 am |
2.5 |
8 am |
3.6 |
9 am |
4 |
10 am |
3.9 |
11 am |
3.3 |
12 pm |
2.1 |
1 pm |
-1.8 |
2 pm |
-3.4 |
3 pm |
-4.1 |
4 pm |
-4.2 |
5 pm |
-3.6 |
6 pm |
-2.3 |
7 pm |
1.8 |
8 pm |
3.2 |
9 pm |
3.9 |
10 pm |
3.9 |
11 pm |
3.5 |
FXUS61 KBOX 170811 AFDBOX
Area Forecast Discussion National Weather Service Boston/Norton MA 311 AM EST Mon Feb 17 2025
SYNOPSIS
Very strong winds continue today into Tuesday, though they won't be as strong on Tuesday. Colder than normal temperatures expected early in the week with highs in the 20s. Winds decrease into Wednesday with slightly warmer temperatures in the upper 20s. Still monitoring a potential coastal storm that may bring us another chance of snow later in the week.
NEAR TERM /UNTIL 6 PM THIS EVENING/
Key Messages...
* Strong, potentially damaging winds today.
* Below normal temperatures with highs in the 20s.
The center of the low which brought all our precipitation yesterday has moved over Nova Scotia this morning placing SNE beneath dry and cold WNW flow through the column. This cold advection will lead to rapidly dropping temperatures as lows dip into the single digits and mid teens early this morning. At the mid levels 850 mb temps drop from +8C on Sunday to -16C today leading to high temperatures as much as 20 degrees colder, in the 20s. Combined with the wind it will feel like the single digits and teens. This wind is due to the tight pressure gradient between the exiting low and high pressure extending into the midwest which results in a 50-60 kt LLJ at 850 mb. Given deep CAA we should see a deeply mixed boundary layer; BUFKIT soundings indicate mixing as high as 800 mb. The result will be potentially damaging wind gusts as high as 55 to 65 mph; whether or not we'll achieve those strongest gusts may depend on how much diurnal warming we can achieve. We should see a mix of clouds and sun with moisture at 850 mb and W winds leading to orographically forced cloudcover over the Berkshires and Worcester Hills.
SHORT TERM /6 PM THIS EVENING THROUGH 6 PM TUESDAY/
Key Messages...
* Remaining gusty overnight and Tuesday.
* Below normal temperatures.
The LLJ persists overnight but loss of diurnal heating should decrease the mixing height and keep those gusts in the 40 to 50 mph range. Wind chill values dip into the low and even negative single digits! Tuesday, more of the same with gusty and cold conditions.
Climatologically highs are typically in the upper 30s and low 40s, but with 850 mb temps even colder than Monday, near -19C, high temperatures will be much below normal, in the low 20s for most locations. In the high elevations temps won't get out of the teens all day. Dry weather prevails under building high pressure.
LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/
Key Messages:
* Winds weaken overnight Tuesday into Wednesday.
* Monitoring potential for a coastal storm Thursday into Friday.
Details:
Tuesday Night - Wednesday:
The pressure gradient continues to relax Tuesday night into Wednesday trending winds downward. It will be another chilly night Tuesday night with lows dropping into the single digits and teens.
Wind chills top into the single digits to negative single digits. On Wednesday, the airmass will begins to moderate as a weak ridge builds in, "warming" highs back into the mid to upper 20s.
Thursday and Friday:
Ensemble guidance continues to display a potential coastal low forming in the mid-Atlantic then tracking northeastward toward New England generally in the Thursday into early Friday timeframe. Track still continues to vary among ensemble and deterministic solutions with run to run differences as well. Over the last bunch of runs however, there is has been a general trend for the low tracking further south over the mid-Atlantic then progressing more ENE. This track has supported the main envelope of solutions right now as more of a "graze" across the eastern portion of southern New England.
With a cold pattern in place, this would mean snow if the track favored precipitation over southern New England. Given current ensemble means this would mean the highest chances for snowfall would further east such as the Cape and Islands. Given uncertainty in the track, amounts and the precipitation probabilities across southern New England remain lower confidence. They should become more clear if models stay consistent with the storm tracking further east.
Weekend:
Weak upper level ridging moves into southern New England for the weekend. Highs stay below normal in the low to mid 30s.
AVIATION /08Z MONDAY THROUGH FRIDAY/
Forecast Confidence Levels:
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
06z TAF Update...High Confidence
Early this morning:
Cold front sweeps across region with gusty westerly winds behind it with gusts 40-50 kts. SCT to BKN cloud decks 2500-3500 ft (high end MVFR to low end VFR).
Today:
VFR and very windy. Winds gusting 40-50 knots, possibly up to 60 knots in the elevated terrain and near the Cape and Islands.
SCT to BKN cloud decks spill off the terrain across western MA extending eastward at 4000-6000 ft.
Tonight and Tuesday:
VFR. Winds remain strong out of the west at 35-45 knots. Windy conditions continue Tuesday with slightly weaker west gusts 30-40 kts.
KBOS TAF...High Confidence
KBDL TAF...High confidence
Outlook /Tuesday Night through Friday/...
Tuesday Night: VFR. Windy with gusts up to 35 kt.
Wednesday: VFR. Breezy.
Wednesday Night: VFR.
Thursday: Mainly VFR, with local MVFR possible. Breezy. Chance SN.
Thursday Night: Mainly VFR, with local IFR possible. Breezy.
Chance SN.
Friday: VFR. Breezy.
MARINE
Forecaster Confidence Levels:
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Moderate confidence.
Dangerous marine conditions today as a strong cold front brings strong westerly sustained winds between 35-45 knots and gusts as high as 55-60 knots. These strong winds will cause very rough seas, rising to 10-15 feet in the open waters, and 4-8 feet in Cape Cod Bay, MVY Sounds, and Nantucket Sound. The cold front will bring subfreezing temperatures well out into the open waters by Monday night. Confidence is high that moderate freezing spray will occur Monday night into Wednesday morning, with a low chance at heavy freezing spray. A Heavy Freezing Spray Advisory has been issued for Monday night through Wednesday morning.
Outlook /Tuesday Night through Friday/...
Tuesday Night: Strong winds with gusts up to 35 kt. Rough seas up to 11 ft. Freezing spray.
Wednesday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Local rough seas. Chance of freezing spray.
Wednesday Night: Winds less than 25 kt.
Thursday: Winds less than 25 kt. Seas locally approaching 5 ft.
Chance of snow. Local visibility 1 nm or less.
Thursday Night: Moderate risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of rough seas. Chance of snow, chance of freezing spray. Local visibility 1 nm or less.
Friday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of rough seas. Chance of freezing spray, slight chance of snow.
BOX WATCHES/WARNINGS/ADVISORIES
CT...Wind Advisory until 7 PM EST this evening for CTZ002>004.
MA...Wind Advisory until 7 PM EST this evening for MAZ017>024.
High Wind Warning until 7 PM EST this evening for MAZ002>004- 008>012-026.
High Wind Warning until 1 AM EST Tuesday for MAZ005>007- 013>016.
RI...Wind Advisory until 7 PM EST this evening for RIZ001>008.
MARINE...Storm Warning until 4 AM EST Tuesday for ANZ230-231-250-251- 254>256.
Freezing Spray Advisory from 7 PM this evening to 10 AM EST Wednesday for ANZ230>237-250-251-254>256.
Gale Warning until 7 PM EST Tuesday for ANZ232>235-237.
Gale Warning until 4 AM EST Tuesday for ANZ236.
Area Forecast Discussion National Weather Service Boston/Norton MA 311 AM EST Mon Feb 17 2025
SYNOPSIS
Very strong winds continue today into Tuesday, though they won't be as strong on Tuesday. Colder than normal temperatures expected early in the week with highs in the 20s. Winds decrease into Wednesday with slightly warmer temperatures in the upper 20s. Still monitoring a potential coastal storm that may bring us another chance of snow later in the week.
NEAR TERM /UNTIL 6 PM THIS EVENING/
Key Messages...
* Strong, potentially damaging winds today.
* Below normal temperatures with highs in the 20s.
The center of the low which brought all our precipitation yesterday has moved over Nova Scotia this morning placing SNE beneath dry and cold WNW flow through the column. This cold advection will lead to rapidly dropping temperatures as lows dip into the single digits and mid teens early this morning. At the mid levels 850 mb temps drop from +8C on Sunday to -16C today leading to high temperatures as much as 20 degrees colder, in the 20s. Combined with the wind it will feel like the single digits and teens. This wind is due to the tight pressure gradient between the exiting low and high pressure extending into the midwest which results in a 50-60 kt LLJ at 850 mb. Given deep CAA we should see a deeply mixed boundary layer; BUFKIT soundings indicate mixing as high as 800 mb. The result will be potentially damaging wind gusts as high as 55 to 65 mph; whether or not we'll achieve those strongest gusts may depend on how much diurnal warming we can achieve. We should see a mix of clouds and sun with moisture at 850 mb and W winds leading to orographically forced cloudcover over the Berkshires and Worcester Hills.
SHORT TERM /6 PM THIS EVENING THROUGH 6 PM TUESDAY/
Key Messages...
* Remaining gusty overnight and Tuesday.
* Below normal temperatures.
The LLJ persists overnight but loss of diurnal heating should decrease the mixing height and keep those gusts in the 40 to 50 mph range. Wind chill values dip into the low and even negative single digits! Tuesday, more of the same with gusty and cold conditions.
Climatologically highs are typically in the upper 30s and low 40s, but with 850 mb temps even colder than Monday, near -19C, high temperatures will be much below normal, in the low 20s for most locations. In the high elevations temps won't get out of the teens all day. Dry weather prevails under building high pressure.
LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/
Key Messages:
* Winds weaken overnight Tuesday into Wednesday.
* Monitoring potential for a coastal storm Thursday into Friday.
Details:
Tuesday Night - Wednesday:
The pressure gradient continues to relax Tuesday night into Wednesday trending winds downward. It will be another chilly night Tuesday night with lows dropping into the single digits and teens.
Wind chills top into the single digits to negative single digits. On Wednesday, the airmass will begins to moderate as a weak ridge builds in, "warming" highs back into the mid to upper 20s.
Thursday and Friday:
Ensemble guidance continues to display a potential coastal low forming in the mid-Atlantic then tracking northeastward toward New England generally in the Thursday into early Friday timeframe. Track still continues to vary among ensemble and deterministic solutions with run to run differences as well. Over the last bunch of runs however, there is has been a general trend for the low tracking further south over the mid-Atlantic then progressing more ENE. This track has supported the main envelope of solutions right now as more of a "graze" across the eastern portion of southern New England.
With a cold pattern in place, this would mean snow if the track favored precipitation over southern New England. Given current ensemble means this would mean the highest chances for snowfall would further east such as the Cape and Islands. Given uncertainty in the track, amounts and the precipitation probabilities across southern New England remain lower confidence. They should become more clear if models stay consistent with the storm tracking further east.
Weekend:
Weak upper level ridging moves into southern New England for the weekend. Highs stay below normal in the low to mid 30s.
AVIATION /08Z MONDAY THROUGH FRIDAY/
Forecast Confidence Levels:
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
06z TAF Update...High Confidence
Early this morning:
Cold front sweeps across region with gusty westerly winds behind it with gusts 40-50 kts. SCT to BKN cloud decks 2500-3500 ft (high end MVFR to low end VFR).
Today:
VFR and very windy. Winds gusting 40-50 knots, possibly up to 60 knots in the elevated terrain and near the Cape and Islands.
SCT to BKN cloud decks spill off the terrain across western MA extending eastward at 4000-6000 ft.
Tonight and Tuesday:
VFR. Winds remain strong out of the west at 35-45 knots. Windy conditions continue Tuesday with slightly weaker west gusts 30-40 kts.
KBOS TAF...High Confidence
KBDL TAF...High confidence
Outlook /Tuesday Night through Friday/...
Tuesday Night: VFR. Windy with gusts up to 35 kt.
Wednesday: VFR. Breezy.
Wednesday Night: VFR.
Thursday: Mainly VFR, with local MVFR possible. Breezy. Chance SN.
Thursday Night: Mainly VFR, with local IFR possible. Breezy.
Chance SN.
Friday: VFR. Breezy.
MARINE
Forecaster Confidence Levels:
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Moderate confidence.
Dangerous marine conditions today as a strong cold front brings strong westerly sustained winds between 35-45 knots and gusts as high as 55-60 knots. These strong winds will cause very rough seas, rising to 10-15 feet in the open waters, and 4-8 feet in Cape Cod Bay, MVY Sounds, and Nantucket Sound. The cold front will bring subfreezing temperatures well out into the open waters by Monday night. Confidence is high that moderate freezing spray will occur Monday night into Wednesday morning, with a low chance at heavy freezing spray. A Heavy Freezing Spray Advisory has been issued for Monday night through Wednesday morning.
Outlook /Tuesday Night through Friday/...
Tuesday Night: Strong winds with gusts up to 35 kt. Rough seas up to 11 ft. Freezing spray.
Wednesday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Local rough seas. Chance of freezing spray.
Wednesday Night: Winds less than 25 kt.
Thursday: Winds less than 25 kt. Seas locally approaching 5 ft.
Chance of snow. Local visibility 1 nm or less.
Thursday Night: Moderate risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of rough seas. Chance of snow, chance of freezing spray. Local visibility 1 nm or less.
Friday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of rough seas. Chance of freezing spray, slight chance of snow.
BOX WATCHES/WARNINGS/ADVISORIES
CT...Wind Advisory until 7 PM EST this evening for CTZ002>004.
MA...Wind Advisory until 7 PM EST this evening for MAZ017>024.
High Wind Warning until 7 PM EST this evening for MAZ002>004- 008>012-026.
High Wind Warning until 1 AM EST Tuesday for MAZ005>007- 013>016.
RI...Wind Advisory until 7 PM EST this evening for RIZ001>008.
MARINE...Storm Warning until 4 AM EST Tuesday for ANZ230-231-250-251- 254>256.
Freezing Spray Advisory from 7 PM this evening to 10 AM EST Wednesday for ANZ230>237-250-251-254>256.
Gale Warning until 7 PM EST Tuesday for ANZ232>235-237.
Gale Warning until 4 AM EST Tuesday for ANZ236.
Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
44020 - NANTUCKET SOUND | 11 mi | 46 min | W 27G | 34°F | 34°F | 29.35 | 26°F | |
BZBM3 - 8447930 - Woods Hole, MA | 12 mi | 56 min | 35°F | 29.40 | ||||
44090 | 19 mi | 56 min | 31°F | 35°F | 5 ft | |||
NBGM3 | 24 mi | 56 min | NNW 22G | 29.39 | ||||
CHTM3 | 28 mi | 56 min | 29.34 | |||||
NTKM3 - 8449130 - Nantucket Island, MA | 29 mi | 56 min | W 15G | 35°F | 29.38 | |||
44085 | 33 mi | 56 min | 33°F | 37°F | 13 ft | |||
BUZM3 - Buzzards Bay, MA | 33 mi | 86 min | W 37G | 29.37 | ||||
FRVM3 - 8447386 - Fall River, MA | 38 mi | 56 min | 35°F | 29.41 | ||||
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA | 39 mi | 56 min | WNW 14G | 29.40 | ||||
FRXM3 | 39 mi | 68 min | 31°F | |||||
NWPR1 - 8452660 - Newport, RI | 46 mi | 56 min | W 14G | 38°F | 29.41 | |||
NAXR1 - Narragansett Bay Reserve, RI | 47 mi | 101 min | N 8.9 | 30°F | 29.39 | 30°F | ||
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI | 47 mi | 56 min | NW 8.9G | 29.43 | ||||
CPTR1 - 8452944 - Conimicut Light, RI | 48 mi | 56 min | W 14G | 35°F | 29.40 |
Wind History for Nantucket Island, MA
toggle option: (graph/table)
Airport Reports
Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Air | DewPt | RH | inHg |
KFMH CAPE COD COAST GUARD AIR STATION,MA | 6 sm | 29 min | W 15G25 | 10 sm | Overcast | 28°F | 19°F | 69% | 29.38 | |
KHYA BARNSTABLE MUNIBOARDMAN/POLANDO FIELD,MA | 11 sm | 29 min | W 13G29 | 10 sm | Mostly Cloudy | 28°F | 18°F | 64% | 29.34 | |
KMVY MARTHA'S VINEYARD,MA | 16 sm | 32 min | W 18G32 | 10 sm | Overcast | 32°F | 18°F | 55% | 29.40 |
Link to 1 hour of 5 minute data for KFMH
Terminal Aerodrome Forecast (TAF) for KFMH
Wind History Graph: FMH
(wind in knots)GEOS Local Image of north east
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