Marine Weather and Tide Forecast for Gloucester, MA
July 1, 2024 8:23 AM EDT (12:23 UTC) Change Location
 | Sunrise 5:07 AM Sunset 8:25 PM Moonrise 1:26 AM Moonset 4:21 PM |
ANZ251 Massachusetts Bay And Ipswich Bay- 705 Am Edt Mon Jul 1 2024
Today - N winds 10 to 15 kt, diminishing to 5 to 10 kt this afternoon. Gusts up to 20 kt. Seas around 2 ft. Wave detail: N 2 ft at 3 seconds and se 2 ft at 7 seconds. A slight chance of showers. Isolated tstms this afternoon.
Tonight - NW winds 5 to 10 kt. Seas around 2 ft. Wave detail: N 2 ft at 4 seconds and se 1 foot at 7 seconds.
Tue - N winds 5 to 10 kt, becoming ne in the afternoon. Seas around 2 ft. Wave detail: ne 2 ft at 4 seconds and se 1 foot at 8 seconds.
Tue night - S winds around 5 kt, becoming sw after midnight. Seas 1 foot or less. Wave detail: sw 1 foot at 2 seconds and ne 1 foot at 4 seconds.
Wed - SW winds around 5 kt, becoming S 10 to 15 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave detail: sw 1 foot at 2 seconds and ne 1 foot at 3 seconds, becoming se 2 ft at 8 seconds and ne 1 foot at 3 seconds.
Wed night - S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave detail: S 2 ft at 3 seconds and se 2 ft at 6 seconds.
Thu through Fri night - S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
winds and seas higher in and near tstms.
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.
winds and seas higher in and near tstms.
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 705 Am Edt Mon Jul 1 2024
Synopsis for massachusetts and rhode island coastal waters - An upper disturbance slides through the region today. This could bring some spotty showers and Thunderstorms to the waters this afternoon. This will be followed by a high pres Tue and Wed. High pres moves farther offshore Thu, permitting a cold front to approach.
FXUS61 KBOX 011123 AFDBOX
Area Forecast Discussion National Weather Service Boston/Norton MA 723 AM EDT Mon Jul 1 2024
SYNOPSIS
An upper level disturbance will bring hit or miss showers today and possibly an isolated thunderstorm, otherwise dry weather with slightly cooler than seasonable temperatures. High pressure brings dry weather and seasonable temperatures with comfortable humidity for Tuesday and Wednesday. Turning more humid and unsettled for Independence Day into this weekend with a couple of disturbances offering chances for showers and thunderstorms.
NEAR TERM /THROUGH TONIGHT/
Much more tranquil weather this morning when compared to yesterday. Latest visible satellite imagery already showed diurnal clouds initiating. Expecting this trend to continue through the morning, with a risk for some showers and thunderstorms later today. Minor changes this morning to reflect observed trends.
Previous Discussion...
Highlights:
* Hit or miss showers and perhaps a few isolated thunderstorms today. Activity generally east of the CT River Valley. In any thunderstorms there is the potential for some small hail.
A sharp trough and cold pool over the eastern Great Lakes this morning will dig into southern New England by this afternoon.
The trough lifts offshore by this evening, while a ridge builds into the central/eastern Great Lakes. A surface trough will slide through our region today, while high pressure builds into the central/eastern Great Lakes.
Main concern in the forecast is hit or miss showers along with isolated thunderstorms. This will largely be a result of diurnal heating in combination with the -15 to -20 degree cold pool sliding in overhead with the trough. Should see a fair amount of CU developing in this setup, but given the position of the trough think that risk of activity will be highest east of the CT River Valley. At this point have slight chances for PoPs for a good portion of the region with chances for eastern areas.
Should see up to 500 J/kg of CAPE with 6-8 degree low level lapse rates and 6-7 degree mid level lapse rates. Actually could have a brief window where 0-6 km deep layer shear is 40-60 kts, late AM to early afternoon. Wonder if this could perhaps be enough for a strong storm to develop. Though should note the limiting factors at this point are we don't have a whole lot of instability or moisture (only 0.75 to 1 inch PWATs and mid 50 to low 60 degree dew points) to work with. Just something we will need to monitor today. Think any thunderstorms will bring the risk for small hail given the cold pool aloft. If a stronger storm were to develop think risk could be some larger hail.
Given the limited moisture have held off from including the small hail mention in the grids. This is also supported by the latest ML guidance per CSU, HRRR Neural Network and Nadocast guidance. Should note the 00Z HRRR thunder probs are nil at this point, but did include thunder given the environmental setup. Temperatures anticipated to be a bit cooler than normal in the post-frontal airmass and won't be as humid. Highs will mostly be in the 70s.
SHORT TERM /TUESDAY/
Highlights
* Any diurnal clouds erode quickly with clear skies expected tonight. Slightly cooler than seasonable for lows.
* Dry with comfortable humidity and seasonable temperatures on Tue.
A ridge axis will be in place across the central/eastern Great Lakes tonight. The ridge builds into the eastern Great Lakes and Mid Atlantic by late Tue. High pressure builds into the eastern Great Lakes and Upstate NY tonight. By Tue the high will be overhead.
Dry and quiet weather expected through this timeframe. Only question in the forecast really is how quickly does the pressure gradient slacken tonight. This will impact how well we are able to radiate given the clear skies. For now have gone with the 25th percentile of guidance for lows heading into Tue. The result is it will be somewhat cool with lows in the 50s.
Abundant sunshine expected on Tue with high pressure overhead.
Could start to see some high clouds pushing into western areas late as a shortwave lifts into the eastern Great Lakes. High temps will be around seasonable levels with comfortable humidity.
LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/
Highlights:
* Dry and warm with tolerable humidity levels for Wed.
* Turning more humid and active for Independence Day, and potentially into Fri/Sat too, with clouds, showers and storms possible. Exact timing remains uncertain.
01/00Z guidance suite was in rather good agreement with the overall synoptic pattern, but still exhibited some detail differences with the smaller scale features. These become important during the summer months when convection is more prevalent. Rather subtle changes can have a big impact on on the outcome. Have high confidence in the forecast through Wednesday, then only average confidence in the details from Independence Day into next weekend.
High pressure at the surface moves offshore Wednesday, leading to another warm day with slightly higher humidity. No rainfall expected.
More unsettled conditions start to develop Wednesday night into Thursday. A passing mid level shortwave along with a warm front passage may trigger some showers, mainly across northern MA. But this will be influenced by how far offshore the high pressure can get. If it is just a little closer, then the expected showers would be shunted farther north, or at least great diminished due to some lingering subsidence.
This in turn feeds into the Thursday forecast. High pressure still parked over the North Atlantic, with a cold front approaching from the west. This front is expected to move into our region some time late on Independence Day into Thursday night, then stall heading into Friday. This frontal boundary should move back north as a warm front into Friday night, only to be followed by a cold front Saturday night into Sunday. While not raining the entire time from Wednesday night into Sunday, not seeing much opportunity for a clearly dry period either. Have at least a slight chance for rainfall during this time, with measurable rainfall more likely heading into this weekend due to the increased humidity.
Temperatures generally above normal for this portion of the forecast.
AVIATION /11Z MONDAY THROUGH FRIDAY/
Forecast Confidence Levels:
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Today...High confidence.
VFR with 4-6 kft CU deck developing late morning through the afternoon. The only exception is across the Cape/Islands where ceilings may be borderline MVFR, especially during the morning.
This will generate scattered showers along with isolated thunderstorms. Cannot completely rule out some small hail in any thunderstorms. Due to uncertainty on the thunder coverage at the terminals, have kept VCSH for now. Risk for storms highest across the Merrimack Valley. Winds out of the N/NNE at 10-15 kts with gusts up to 20 kts.
Tonight...High confidence.
VFR with skies quickly becoming clear during the evening and diminishing winds.
Tuesday...High confidence.
VFR with light winds and increasing high clouds across western areas late. Localized sea breezes developing roughly 15-18Z.
KBOS TAF...High confidence.
VFR through the forecast. NW winds shifting to the by daybreak.
Turning NNE by late morning into the afternoon. Risk for hit or miss showers and isolated thunderstorms. If a thunderstorm moves over the terminal there is a risk for small hail. Due to uncertainty on the coverage have kept thunder out of the current forecast.
KBDL TAF...High confidence.
VFR through the forecast. Winds shifting from the NW to the N by daybreak. Will be gusty throughout the day at 15-20 kts. Cannot completely rule out an isolated shower during the afternoon.
Outlook /Tuesday Night through Friday/...
Tuesday Night: VFR.
Wednesday: VFR. Breezy.
Wednesday Night: VFR. Breezy. Slight chance SHRA.
Independence Day: Mainly VFR, with local MVFR possible. Breezy.
Slight chance SHRA.
Thursday Night: VFR. Breezy. Slight chance SHRA.
Friday: Chance SHRA.
MARINE
Forecaster Confidence Levels:
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Today...High confidence.
Winds shifting to the NW as a cold front crosses the waters.
Should see winds turning northerly toward daybreak. Wind speeds of 10-15 kts with some 15-20 kt gusts. Seas diminish to 2-4 ft.
Tonight...High confidence.
Winds out of the N to NW at 5-10 kts. Dry weather with seas 1-3 ft.
Tuesday...High confidence.
Winds out of the N to start, but will quickly diminish and shift to the E/SE as high pressure moves overhead. Seas 1-3 ft with dry weather.
Outlook /Tuesday Night through Friday/...
Tuesday Night through Wednesday: Winds less than 25 kt.
Wednesday Night: Winds less than 25 kt. Slight chance of rain showers.
Independence Day through Thursday Night: Winds less than 25 kt.
Seas locally approaching 5 ft. Slight chance of rain showers.
Friday: Winds less than 25 kt. Seas locally approaching 5 ft.
Chance of rain showers.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...None.
Area Forecast Discussion National Weather Service Boston/Norton MA 723 AM EDT Mon Jul 1 2024
SYNOPSIS
An upper level disturbance will bring hit or miss showers today and possibly an isolated thunderstorm, otherwise dry weather with slightly cooler than seasonable temperatures. High pressure brings dry weather and seasonable temperatures with comfortable humidity for Tuesday and Wednesday. Turning more humid and unsettled for Independence Day into this weekend with a couple of disturbances offering chances for showers and thunderstorms.
NEAR TERM /THROUGH TONIGHT/
Much more tranquil weather this morning when compared to yesterday. Latest visible satellite imagery already showed diurnal clouds initiating. Expecting this trend to continue through the morning, with a risk for some showers and thunderstorms later today. Minor changes this morning to reflect observed trends.
Previous Discussion...
Highlights:
* Hit or miss showers and perhaps a few isolated thunderstorms today. Activity generally east of the CT River Valley. In any thunderstorms there is the potential for some small hail.
A sharp trough and cold pool over the eastern Great Lakes this morning will dig into southern New England by this afternoon.
The trough lifts offshore by this evening, while a ridge builds into the central/eastern Great Lakes. A surface trough will slide through our region today, while high pressure builds into the central/eastern Great Lakes.
Main concern in the forecast is hit or miss showers along with isolated thunderstorms. This will largely be a result of diurnal heating in combination with the -15 to -20 degree cold pool sliding in overhead with the trough. Should see a fair amount of CU developing in this setup, but given the position of the trough think that risk of activity will be highest east of the CT River Valley. At this point have slight chances for PoPs for a good portion of the region with chances for eastern areas.
Should see up to 500 J/kg of CAPE with 6-8 degree low level lapse rates and 6-7 degree mid level lapse rates. Actually could have a brief window where 0-6 km deep layer shear is 40-60 kts, late AM to early afternoon. Wonder if this could perhaps be enough for a strong storm to develop. Though should note the limiting factors at this point are we don't have a whole lot of instability or moisture (only 0.75 to 1 inch PWATs and mid 50 to low 60 degree dew points) to work with. Just something we will need to monitor today. Think any thunderstorms will bring the risk for small hail given the cold pool aloft. If a stronger storm were to develop think risk could be some larger hail.
Given the limited moisture have held off from including the small hail mention in the grids. This is also supported by the latest ML guidance per CSU, HRRR Neural Network and Nadocast guidance. Should note the 00Z HRRR thunder probs are nil at this point, but did include thunder given the environmental setup. Temperatures anticipated to be a bit cooler than normal in the post-frontal airmass and won't be as humid. Highs will mostly be in the 70s.
SHORT TERM /TUESDAY/
Highlights
* Any diurnal clouds erode quickly with clear skies expected tonight. Slightly cooler than seasonable for lows.
* Dry with comfortable humidity and seasonable temperatures on Tue.
A ridge axis will be in place across the central/eastern Great Lakes tonight. The ridge builds into the eastern Great Lakes and Mid Atlantic by late Tue. High pressure builds into the eastern Great Lakes and Upstate NY tonight. By Tue the high will be overhead.
Dry and quiet weather expected through this timeframe. Only question in the forecast really is how quickly does the pressure gradient slacken tonight. This will impact how well we are able to radiate given the clear skies. For now have gone with the 25th percentile of guidance for lows heading into Tue. The result is it will be somewhat cool with lows in the 50s.
Abundant sunshine expected on Tue with high pressure overhead.
Could start to see some high clouds pushing into western areas late as a shortwave lifts into the eastern Great Lakes. High temps will be around seasonable levels with comfortable humidity.
LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/
Highlights:
* Dry and warm with tolerable humidity levels for Wed.
* Turning more humid and active for Independence Day, and potentially into Fri/Sat too, with clouds, showers and storms possible. Exact timing remains uncertain.
01/00Z guidance suite was in rather good agreement with the overall synoptic pattern, but still exhibited some detail differences with the smaller scale features. These become important during the summer months when convection is more prevalent. Rather subtle changes can have a big impact on on the outcome. Have high confidence in the forecast through Wednesday, then only average confidence in the details from Independence Day into next weekend.
High pressure at the surface moves offshore Wednesday, leading to another warm day with slightly higher humidity. No rainfall expected.
More unsettled conditions start to develop Wednesday night into Thursday. A passing mid level shortwave along with a warm front passage may trigger some showers, mainly across northern MA. But this will be influenced by how far offshore the high pressure can get. If it is just a little closer, then the expected showers would be shunted farther north, or at least great diminished due to some lingering subsidence.
This in turn feeds into the Thursday forecast. High pressure still parked over the North Atlantic, with a cold front approaching from the west. This front is expected to move into our region some time late on Independence Day into Thursday night, then stall heading into Friday. This frontal boundary should move back north as a warm front into Friday night, only to be followed by a cold front Saturday night into Sunday. While not raining the entire time from Wednesday night into Sunday, not seeing much opportunity for a clearly dry period either. Have at least a slight chance for rainfall during this time, with measurable rainfall more likely heading into this weekend due to the increased humidity.
Temperatures generally above normal for this portion of the forecast.
AVIATION /11Z MONDAY THROUGH FRIDAY/
Forecast Confidence Levels:
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Today...High confidence.
VFR with 4-6 kft CU deck developing late morning through the afternoon. The only exception is across the Cape/Islands where ceilings may be borderline MVFR, especially during the morning.
This will generate scattered showers along with isolated thunderstorms. Cannot completely rule out some small hail in any thunderstorms. Due to uncertainty on the thunder coverage at the terminals, have kept VCSH for now. Risk for storms highest across the Merrimack Valley. Winds out of the N/NNE at 10-15 kts with gusts up to 20 kts.
Tonight...High confidence.
VFR with skies quickly becoming clear during the evening and diminishing winds.
Tuesday...High confidence.
VFR with light winds and increasing high clouds across western areas late. Localized sea breezes developing roughly 15-18Z.
KBOS TAF...High confidence.
VFR through the forecast. NW winds shifting to the by daybreak.
Turning NNE by late morning into the afternoon. Risk for hit or miss showers and isolated thunderstorms. If a thunderstorm moves over the terminal there is a risk for small hail. Due to uncertainty on the coverage have kept thunder out of the current forecast.
KBDL TAF...High confidence.
VFR through the forecast. Winds shifting from the NW to the N by daybreak. Will be gusty throughout the day at 15-20 kts. Cannot completely rule out an isolated shower during the afternoon.
Outlook /Tuesday Night through Friday/...
Tuesday Night: VFR.
Wednesday: VFR. Breezy.
Wednesday Night: VFR. Breezy. Slight chance SHRA.
Independence Day: Mainly VFR, with local MVFR possible. Breezy.
Slight chance SHRA.
Thursday Night: VFR. Breezy. Slight chance SHRA.
Friday: Chance SHRA.
MARINE
Forecaster Confidence Levels:
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Today...High confidence.
Winds shifting to the NW as a cold front crosses the waters.
Should see winds turning northerly toward daybreak. Wind speeds of 10-15 kts with some 15-20 kt gusts. Seas diminish to 2-4 ft.
Tonight...High confidence.
Winds out of the N to NW at 5-10 kts. Dry weather with seas 1-3 ft.
Tuesday...High confidence.
Winds out of the N to start, but will quickly diminish and shift to the E/SE as high pressure moves overhead. Seas 1-3 ft with dry weather.
Outlook /Tuesday Night through Friday/...
Tuesday Night through Wednesday: Winds less than 25 kt.
Wednesday Night: Winds less than 25 kt. Slight chance of rain showers.
Independence Day through Thursday Night: Winds less than 25 kt.
Seas locally approaching 5 ft. Slight chance of rain showers.
Friday: Winds less than 25 kt. Seas locally approaching 5 ft.
Chance of rain showers.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| 44029 - Buoy A0102 - Mass. Bay/Stellwagen | 8 mi | 139 min | NNW 9.7G | 63°F | 58°F | 2 ft | 29.87 | |
| 44013 - BOSTON 16 NM East of Boston, MA | 18 mi | 53 min | NNW 9.7G | 64°F | 62°F | 29.91 | 60°F | |
| IOSN3 - Isle of Shoals, NH | 25 mi | 83 min | NNW 15G | 65°F | 29.88 | 57°F | ||
| BHBM3 - 8443970 - Boston, MA | 27 mi | 65 min | 71°F | 29.90 | ||||
| 44073 | 29 mi | 178 min | NNW 5.8G | 60°F | 55°F | |||
| 44098 - Jeffrey's Ledge, NH (160) | 29 mi | 57 min | 60°F | 2 ft | ||||
| BGXN3 - Great Bay Reserve, NH | 32 mi | 98 min | NW 1 | 65°F | 29.92 | 61°F | ||
| SEIM1 | 33 mi | 65 min | 68°F | 52°F | 29.93 | 62°F | ||
| 44018 - SE Cape Cod 30NM East of Nantucket, MA | 39 mi | 73 min | 58°F | 2 ft | ||||
| 44030 - Buoy B0102 - Western Maine Shelf | 41 mi | 139 min | N 9.7G | 60°F | 55°F | 2 ft | 29.86 |
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Link to 1 hour of 5 minute data for KBVY
Terminal Aerodrome Forecast (TAF) for KBVY
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Terminal Aerodrome Forecast (TAF) for KBVY
Wind History graph: BVY
(wind in knots)Tide / Current data from XTide NOT FOR NAVIGATION
Gloucester Harbor, Massachusetts, Tide feet
Marblehead Channel
Click for Map
Mon -- 12:19 AM EDT -0.38 knots Max Ebb
Mon -- 01:27 AM EDT Moonrise
Mon -- 02:37 AM EDT 0.00 knots Slack
Mon -- 05:10 AM EDT Sunrise
Mon -- 05:48 AM EDT 0.37 knots Max Flood
Mon -- 08:32 AM EDT -0.00 knots Slack
Mon -- 12:45 PM EDT -0.35 knots Max Ebb
Mon -- 02:56 PM EDT 0.00 knots Slack
Mon -- 04:22 PM EDT Moonset
Mon -- 06:10 PM EDT 0.41 knots Max Flood
Mon -- 08:24 PM EDT Sunset
Mon -- 09:00 PM EDT -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 12:19 AM EDT -0.38 knots Max Ebb
Mon -- 01:27 AM EDT Moonrise
Mon -- 02:37 AM EDT 0.00 knots Slack
Mon -- 05:10 AM EDT Sunrise
Mon -- 05:48 AM EDT 0.37 knots Max Flood
Mon -- 08:32 AM EDT -0.00 knots Slack
Mon -- 12:45 PM EDT -0.35 knots Max Ebb
Mon -- 02:56 PM EDT 0.00 knots Slack
Mon -- 04:22 PM EDT Moonset
Mon -- 06:10 PM EDT 0.41 knots Max Flood
Mon -- 08:24 PM EDT Sunset
Mon -- 09:00 PM EDT -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Marblehead Channel, Massachusetts Current, knots
| 12 am |
| -0.4 |
| 1 am |
| -0.4 |
| 2 am |
| -0.2 |
| 3 am |
| 0.1 |
| 4 am |
| 0.3 |
| 5 am |
| 0.4 |
| 6 am |
| 0.4 |
| 7 am |
| 0.3 |
| 8 am |
| 0.1 |
| 9 am |
| -0.1 |
| 10 am |
| -0.2 |
| 11 am |
| -0.3 |
| 12 pm |
| -0.3 |
| 1 pm |
| -0.3 |
| 2 pm |
| -0.2 |
| 3 pm |
| 0 |
| 4 pm |
| 0.3 |
| 5 pm |
| 0.4 |
| 6 pm |
| 0.4 |
| 7 pm |
| 0.4 |
| 8 pm |
| 0.2 |
| 9 pm |
| 0 |
| 10 pm |
| -0.2 |
| 11 pm |
| -0.3 |
Boston, MA,
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