Marine Weather and Tide Forecast for Gloucester, MA
April 19, 2025 4:40 PM EDT (20:40 UTC) Change Location
 | Sunrise 5:52 AM Sunset 7:30 PM Moonrise 1:28 AM Moonset 9:49 AM |
ANZ251 Massachusetts Bay And Ipswich Bay- 403 Pm Edt Sat Apr 19 2025
.small craft advisory in effect until 7 pm edt this evening - .
Tonight - SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave detail: sw 3 ft at 4 seconds and se 1 foot at 8 seconds. A chance of rain this evening.
Sun - NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave detail: nw 3 ft at 4 seconds and se 1 foot at 8 seconds.
Sun night - NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave detail: nw 2 ft at 4 seconds and ne 1 foot at 7 seconds.
Mon - N winds around 5 kt, becoming se 10 to 15 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave detail: N 1 foot at 4 seconds, becoming se 1 foot at 3 seconds and ne 1 foot at 6 seconds.
Mon night and Tue - SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave detail: se 2 ft at 3 seconds and ne 1 foot at 7 seconds. A chance of showers in the evening, then showers likely through the day. A chance of showers in the afternoon.
Tue night - W winds 10 to 15 kt. Seas around 2 ft. Wave detail: sw 2 ft at 3 seconds and se 1 foot at 6 seconds.
Wed through Thu night - S winds 5 to 10 kt. Seas around 2 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 403 Pm Edt Sat Apr 19 2025
Synopsis for massachusetts and rhode island coastal waters - A cold front will cross the waters late tonight. Another high pres builds over the region for Mon, with another front passing over the waters Tue. Another high pres should arrive for Wed. High pressure maintains control through Thurs.
7 Day Forecast for Marine Location Near Gloucester, MA
NEW! Add second zone forecast
| Tide / Current data from XTide NOT FOR NAVIGATION |
Gloucester Harbor, Massachusetts, Tide feet
| Marblehead Channel Click for Map Sat -- 01:19 AM EDT 0.40 knots Max Flood Sat -- 01:27 AM EDT Moonrise Sat -- 04:52 AM EDT -0.00 knots Slack Sat -- 05:55 AM EDT Sunrise Sat -- 07:56 AM EDT -0.33 knots Max Ebb Sat -- 09:50 AM EDT Moonset Sat -- 11:46 AM EDT 0.00 knots Slack Sat -- 01:50 PM EDT 0.37 knots Max Flood Sat -- 05:27 PM EDT -0.00 knots Slack Sat -- 07:30 PM EDT Sunset Sat -- 08:17 PM EDT -0.27 knots Max Ebb Tide / Current data from XTide NOT FOR NAVIGATION |
Marblehead Channel, Massachusetts Current, knots
| 12 am |
| 0.2 |
| 1 am |
| 0.4 |
| 2 am |
| 0.4 |
| 3 am |
| 0.3 |
| 4 am |
| 0.2 |
| 5 am |
| -0 |
| 6 am |
| -0.2 |
| 7 am |
| -0.3 |
| 8 am |
| -0.3 |
| 9 am |
| -0.3 |
| 10 am |
| -0.3 |
| 11 am |
| -0.2 |
| 12 pm |
| 0.1 |
| 1 pm |
| 0.3 |
| 2 pm |
| 0.4 |
| 3 pm |
| 0.3 |
| 4 pm |
| 0.3 |
| 5 pm |
| 0.1 |
| 6 pm |
| -0.1 |
| 7 pm |
| -0.2 |
| 8 pm |
| -0.3 |
| 9 pm |
| -0.3 |
| 10 pm |
| -0.2 |
| 11 pm |
| -0.2 |
FXUS61 KBOX 191847 AFDBOX
Area Forecast Discussion National Weather Service Boston/Norton MA 247 PM EDT Sat Apr 19 2025
SYNOPSIS
Scattered showers and possibly a rumble of thunder later this afternoon and evening. Drier and mild behind a cold front Sunday with gusty northwest winds. Low pressure should pass by to our north Tuesday. High pressure then expected to linger nearby into Friday with above normal temperatures.
NEAR TERM /UNTIL 6 AM SUNDAY MORNING/
Key Messages
* Showers associated with a passing cold front taper off the east coast by midnight
* Rapid clearing overnight with winds shifting to the northwest behind the cold front
Tonight
A strong cold front ushers out the abnormally warm air mass that is in place this afternoon. Scattered showers should taper off the east coast between roughly 8-11PM. Still can't rule out a rumble of thunder, but instability should be waning in the hours following sunset. Winds shift to the northwest overnight and remain strong/gusty with sustained winds from 15 to 20 mph and wind gusts from 25 to 35 mph.
SHORT TERM /6 AM SUNDAY MORNING THROUGH SUNDAY NIGHT/
Key Messages
* Gusty northwest winds (25-35 mph) and low relative humidity (20-30%) tomorrow may support elevated fire weather conditions across southern New England tomorrow afternoon
* Gusty winds diminish tomorrow night as high pressure builds in from the west to start next week
Tomorrow and Tomorrow Night
Temperatures will be more seasonable tomorrow as 925 hPa temps dip to 5C in the wake of the passing cold front. Steep low-level lapse rates will support deep diurnal mixing, so we can expect high temperatures to top out in the upper 50s to low 60s. The low-level jet will continue to be fairly strong tomorrow afternoon, especially across the eastern half of southern New England. Thus, we'll be looking at another afternoon with gusty winds out of the northwest between 25 and 35 mph. The atmosphere will be substantially drier as well with dewpoints falling to the 20s across much of southern New England. This will support very low RH values between 20 and 30 percent. With the dry conditions and gusty winds, a special weather statement for elevated fire weather concerns will likely be in the cards for tomorrow. This will hinge on how much precipitation we receive with the showers we're expecting this afternoon and evening.
Winds will gradually weaken Sunday night into Monday as high pressure builds in from the west and helps relax the pressure gradient. Mechanical mixing may limit radiational cooling for the first half of the night, but as winds weaken to light/variable the rate of cooling should increase in the hours approaching sunset.
Generally expect lows in the mid 30s across the region for Monday morning.
LONG TERM /MONDAY THROUGH SATURDAY/
Key Messages:
* Dry for much of Monday with light NW winds shifting more southerly into the afternoon
* Showers Monday night into Tuesday, dry through most of the week, then another round Friday
* Temperatures next week remain slightly above normal
Monday through Tuesday:
An upper level ridge and associated surface high push into southern New England Monday bringing light NW winds to start the day. As the high moves offshore through the day, winds will become more southerly, except for the eastern coast where winds will likely be more easterly with a sea breeze in the afternoon. Temperatures trend slightly cooler than Sunday with highs in the 50s closer to the coastline and low 60s across interior southern New England. It will be dry much of the day with showers likely not arriving until Monday night. Although there is a low chance (< 20%) for an isolated shower in the early evening timeframe.
A round of showers move through Monday night into Tuesday with light rainfall amounts expected. Tuesday likely stays unsettled for the morning, as any remaining showers exit off to the east, followed by gradually drying conditions in the afternoon. Weak warm advection will bring 850mb temperatures in the 9-12C range Tuesday. This will support above normal temperatures in the 60s and lower 70s with the exception of the Cape/Islands in the high 50s.
Tuesday Night through Friday:
A cold front moves through Tuesday night into early Wednesday morning bringing a slightly cooler airmass in for Wednesday... still slightly above normal temps with highs in the 60s in most places. A similar pattern stays in place through the end of the week with zonal flow and 850mb temperature anomalies signaling slightly above normal temperatures. Ensembles indicate the potential for the passage of a low sometime Friday/Saturday possibly bringing some showery conditions for the weekend; however, it's too far out to make any concrete conclusions at this time.
AVIATION /19Z SATURDAY THROUGH THURSDAY/
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Through 00Z...High Confidence
VFR with continued gusty southwest winds. Low chance for a rumble of thunder with -SHRA west of ORH between 21-00Z. Strong LLWS 40-55 knots over Cape/Islands terminals
Tonight...High Confidence
Mainly VFR. Brief borderline MVFR ceilings may accompany cold front with isolated to widely scattered SHRA through 03Z. Front moves through after midnight with rapid clearing behind it and switch to NW winds with gusts 25-40 kt. The higher end of that range possible for higher terrain terminals briefly(ORH).
Sunday...High confidence.
VFR. NW winds with gusts of 20-30 kt. Gusts diminish towards sunset.
Sunday Night... High Confidence.
VFR. Northwest winds gradually become light and variable by 12Z.
KBOS TAF...High confidence in flight categories. Less confidence in -SHRA potential. Very low risk for thunder with -SHRA between 00-03Z. Confidence not high enough to include in PROB30.
KBDL TAF...High confidence in TAF.
Outlook /Monday through Thursday/...
Monday: VFR.
Monday Night: Mainly VFR, with local IFR possible. Breezy. SHRA likely.
Tuesday: Mainly VFR, with local IFR possible. Breezy. Chance SHRA.
Tuesday Night: VFR. Breezy.
Wednesday through Thursday: VFR.
MARINE
Forecaster Confidence Levels:
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Tonight through Tomorrow Night
SCY conditions persist overnight for the southern marine zones as a cold front crosses the water this evening. Winds shift from southwest to northwest but remain on the strong side with 15 to 20 knot sustained winds and gusts up to 30 knots. Wind gradually weaken during the afternoon tomorrow and become much lighter tomorrow night as high pressure builds in from the west. Seas gradually subside below SCY criteria tomorrow as well.
Outlook /Monday through Thursday/...
Monday: Winds less than 25 kt.
Monday Night: Winds less than 25 kt. Seas locally approaching 5 ft. Chance of rain showers.
Tuesday: Winds less than 25 kt. Seas up to 5 ft. Chance of rain showers.
Tuesday Night: Winds less than 25 kt. Areas of seas approaching 5 ft.
Wednesday through Thursday: Winds less than 25 kt.
FIRE WEATHER
SPS for elevated fire weather will be likely for tomorrow for southern New England. A drier air mass filters into the region behind a cold front crossing the region this afternoon. Gusty northwest winds tomorrow afternoon with gusts up to 35 mph combined with low relative humidities between 20 and 30 percent could result in fast spread of any wildland fires. Potential will also hinder on how much precipitation we get from a round of showers ahead of the approaching cold front this afternoon and evening. A final decision on a headline will be made overnight once the aforementioned showers have exited the region.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 7 PM EDT this evening for ANZ230- 251.
Small Craft Advisory until 10 PM EDT this evening for ANZ231.
Small Craft Advisory until 1 AM EDT Sunday for ANZ232-234-236.
Small Craft Advisory until 7 AM EDT Sunday for ANZ233.
Small Craft Advisory until 7 PM EDT Sunday for ANZ235-237-250- 254>256.
Area Forecast Discussion National Weather Service Boston/Norton MA 247 PM EDT Sat Apr 19 2025
SYNOPSIS
Scattered showers and possibly a rumble of thunder later this afternoon and evening. Drier and mild behind a cold front Sunday with gusty northwest winds. Low pressure should pass by to our north Tuesday. High pressure then expected to linger nearby into Friday with above normal temperatures.
NEAR TERM /UNTIL 6 AM SUNDAY MORNING/
Key Messages
* Showers associated with a passing cold front taper off the east coast by midnight
* Rapid clearing overnight with winds shifting to the northwest behind the cold front
Tonight
A strong cold front ushers out the abnormally warm air mass that is in place this afternoon. Scattered showers should taper off the east coast between roughly 8-11PM. Still can't rule out a rumble of thunder, but instability should be waning in the hours following sunset. Winds shift to the northwest overnight and remain strong/gusty with sustained winds from 15 to 20 mph and wind gusts from 25 to 35 mph.
SHORT TERM /6 AM SUNDAY MORNING THROUGH SUNDAY NIGHT/
Key Messages
* Gusty northwest winds (25-35 mph) and low relative humidity (20-30%) tomorrow may support elevated fire weather conditions across southern New England tomorrow afternoon
* Gusty winds diminish tomorrow night as high pressure builds in from the west to start next week
Tomorrow and Tomorrow Night
Temperatures will be more seasonable tomorrow as 925 hPa temps dip to 5C in the wake of the passing cold front. Steep low-level lapse rates will support deep diurnal mixing, so we can expect high temperatures to top out in the upper 50s to low 60s. The low-level jet will continue to be fairly strong tomorrow afternoon, especially across the eastern half of southern New England. Thus, we'll be looking at another afternoon with gusty winds out of the northwest between 25 and 35 mph. The atmosphere will be substantially drier as well with dewpoints falling to the 20s across much of southern New England. This will support very low RH values between 20 and 30 percent. With the dry conditions and gusty winds, a special weather statement for elevated fire weather concerns will likely be in the cards for tomorrow. This will hinge on how much precipitation we receive with the showers we're expecting this afternoon and evening.
Winds will gradually weaken Sunday night into Monday as high pressure builds in from the west and helps relax the pressure gradient. Mechanical mixing may limit radiational cooling for the first half of the night, but as winds weaken to light/variable the rate of cooling should increase in the hours approaching sunset.
Generally expect lows in the mid 30s across the region for Monday morning.
LONG TERM /MONDAY THROUGH SATURDAY/
Key Messages:
* Dry for much of Monday with light NW winds shifting more southerly into the afternoon
* Showers Monday night into Tuesday, dry through most of the week, then another round Friday
* Temperatures next week remain slightly above normal
Monday through Tuesday:
An upper level ridge and associated surface high push into southern New England Monday bringing light NW winds to start the day. As the high moves offshore through the day, winds will become more southerly, except for the eastern coast where winds will likely be more easterly with a sea breeze in the afternoon. Temperatures trend slightly cooler than Sunday with highs in the 50s closer to the coastline and low 60s across interior southern New England. It will be dry much of the day with showers likely not arriving until Monday night. Although there is a low chance (< 20%) for an isolated shower in the early evening timeframe.
A round of showers move through Monday night into Tuesday with light rainfall amounts expected. Tuesday likely stays unsettled for the morning, as any remaining showers exit off to the east, followed by gradually drying conditions in the afternoon. Weak warm advection will bring 850mb temperatures in the 9-12C range Tuesday. This will support above normal temperatures in the 60s and lower 70s with the exception of the Cape/Islands in the high 50s.
Tuesday Night through Friday:
A cold front moves through Tuesday night into early Wednesday morning bringing a slightly cooler airmass in for Wednesday... still slightly above normal temps with highs in the 60s in most places. A similar pattern stays in place through the end of the week with zonal flow and 850mb temperature anomalies signaling slightly above normal temperatures. Ensembles indicate the potential for the passage of a low sometime Friday/Saturday possibly bringing some showery conditions for the weekend; however, it's too far out to make any concrete conclusions at this time.
AVIATION /19Z SATURDAY THROUGH THURSDAY/
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Through 00Z...High Confidence
VFR with continued gusty southwest winds. Low chance for a rumble of thunder with -SHRA west of ORH between 21-00Z. Strong LLWS 40-55 knots over Cape/Islands terminals
Tonight...High Confidence
Mainly VFR. Brief borderline MVFR ceilings may accompany cold front with isolated to widely scattered SHRA through 03Z. Front moves through after midnight with rapid clearing behind it and switch to NW winds with gusts 25-40 kt. The higher end of that range possible for higher terrain terminals briefly(ORH).
Sunday...High confidence.
VFR. NW winds with gusts of 20-30 kt. Gusts diminish towards sunset.
Sunday Night... High Confidence.
VFR. Northwest winds gradually become light and variable by 12Z.
KBOS TAF...High confidence in flight categories. Less confidence in -SHRA potential. Very low risk for thunder with -SHRA between 00-03Z. Confidence not high enough to include in PROB30.
KBDL TAF...High confidence in TAF.
Outlook /Monday through Thursday/...
Monday: VFR.
Monday Night: Mainly VFR, with local IFR possible. Breezy. SHRA likely.
Tuesday: Mainly VFR, with local IFR possible. Breezy. Chance SHRA.
Tuesday Night: VFR. Breezy.
Wednesday through Thursday: VFR.
MARINE
Forecaster Confidence Levels:
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Tonight through Tomorrow Night
SCY conditions persist overnight for the southern marine zones as a cold front crosses the water this evening. Winds shift from southwest to northwest but remain on the strong side with 15 to 20 knot sustained winds and gusts up to 30 knots. Wind gradually weaken during the afternoon tomorrow and become much lighter tomorrow night as high pressure builds in from the west. Seas gradually subside below SCY criteria tomorrow as well.
Outlook /Monday through Thursday/...
Monday: Winds less than 25 kt.
Monday Night: Winds less than 25 kt. Seas locally approaching 5 ft. Chance of rain showers.
Tuesday: Winds less than 25 kt. Seas up to 5 ft. Chance of rain showers.
Tuesday Night: Winds less than 25 kt. Areas of seas approaching 5 ft.
Wednesday through Thursday: Winds less than 25 kt.
FIRE WEATHER
SPS for elevated fire weather will be likely for tomorrow for southern New England. A drier air mass filters into the region behind a cold front crossing the region this afternoon. Gusty northwest winds tomorrow afternoon with gusts up to 35 mph combined with low relative humidities between 20 and 30 percent could result in fast spread of any wildland fires. Potential will also hinder on how much precipitation we get from a round of showers ahead of the approaching cold front this afternoon and evening. A final decision on a headline will be made overnight once the aforementioned showers have exited the region.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 7 PM EDT this evening for ANZ230- 251.
Small Craft Advisory until 10 PM EDT this evening for ANZ231.
Small Craft Advisory until 1 AM EDT Sunday for ANZ232-234-236.
Small Craft Advisory until 7 AM EDT Sunday for ANZ233.
Small Craft Advisory until 7 PM EDT Sunday for ANZ235-237-250- 254>256.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| 44029 - Buoy A0102 - Mass. Bay/Stellwagen | 8 mi | 97 min | SSW 14G | 54°F | 2 ft | 29.79 | ||
| 44013 - BOSTON 16 NM East of Boston, MA | 18 mi | 41 min | S 12G | 57°F | 44°F | 29.83 | 49°F | |
| IOSN3 - Isle of Shoals, NH | 25 mi | 41 min | W 21G | 74°F | 29.77 | 46°F | ||
| BHBM3 - 8443970 - Boston, MA | 27 mi | 53 min | 81°F | 29.80 | ||||
| 44073 | 29 mi | 46 min | WSW 16G | 62°F | 42°F | |||
| 44098 - Jeffrey's Ledge, NH (160) | 29 mi | 45 min | 41°F | 4 ft | ||||
| BGXN3 - Great Bay Reserve, NH | 32 mi | 56 min | W 15 | 76°F | 57°F | |||
| SEIM1 | 33 mi | 53 min | 75°F | 43°F | 29.79 | 54°F | ||
| 44030 - Buoy B0102 - Western Maine Shelf | 41 mi | 97 min | S 12G | 48°F | 42°F | 3 ft | 29.74 |
Wind History for No Ports station near this location
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Terminal Aerodrome Forecast (TAF) for KBVY
Wind History Graph: BVY
(wind in knots)
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Boston, MA,
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