Marine Weather and Tide Forecast for Hartford, CT
 | Sunrise 5:29 AM Sunset 8:24 PM Moonrise 11:55 PM Moonset 1:00 PM |
Marine Forecasts
NOTE: Zones were updated 3/20/2025. If your report is out of date, please click Edit
ANZ331 Long Island Sound East Of New Haven Ct/port Jefferson Ny To The Mouth Of The Connecticut River- 218 Pm Edt Thu Jul 17 2025
Tonight - SW winds 10 to 15 kt with gusts up to 20 kt, becoming W after midnight. Seas around 2 ft. Wave detail: sw 2 ft at 3 seconds. Chance of showers and tstms early this evening.
Fri - NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 2 ft in the morning, then 1 ft or less. Wave detail: nw 1 ft at 3 seconds, becoming W 1 ft at 3 seconds.
Fri night - NW winds around 5 kt, becoming ne after midnight. Seas 1 ft or less. Wave detail: W 1 ft at 2 seconds.
Sat - E winds around 5 kt, becoming S in the afternoon. Seas 1 ft or less. Wave detail: S 1 ft at 2 seconds. Slight chance of showers in the afternoon.
Sat night - S winds 5 to 10 kt. Seas 1 ft or less. Wave detail: S 1 ft at 2 seconds. Showers likely. Isolated tstms in the evening, then scattered tstms after midnight.
Sun - W winds 5 to 10 kt. Seas 1 ft or less. Wave detail: sw 1 ft at 2 seconds. Showers likely in the morning, then scattered tstms and chance of showers in the afternoon.
Sun night - NW winds 5 to 10 kt. Seas 1 ft or less.
Mon - NW winds 5 to 10 kt. Seas 1 ft or less.
Mon night - N winds 5 to 10 kt. Seas 1 ft or less.
Tue - E winds 5 to 10 kt. Seas 1 ft or less.
Tue night - SW winds 5 to 10 kt. Seas 1 ft or less.
winds and seas may be higher in and near tstms.
winds and seas may be higher in and near tstms.
ANZ300 218 Pm Edt Thu Jul 17 2025
Synopsis for the long island and connecticut coastal waters - A cold front moves through the area tonight. High pressure builds in Friday then moves offshore during Saturday with a warm front moving to the north. A cold front moves through the area late Sunday. High pressure builds in for early next week. A frontal boundary will be nearby for Wednesday and Thursday.
7 Day Forecast for Marine Location Near Hartford, CT
NEW! Add second zone forecast
| Hartford Click for Map Thu -- 04:02 AM EDT 0.33 feet Low Tide Thu -- 05:31 AM EDT Sunrise Thu -- 08:13 AM EDT 1.95 feet High Tide Thu -- 12:59 PM EDT Moonset Thu -- 04:11 PM EDT 0.28 feet Low Tide Thu -- 08:22 PM EDT Sunset Thu -- 08:39 PM EDT Last Quarter Thu -- 08:50 PM EDT 2.33 feet High Tide Thu -- 11:54 PM EDT Moonrise Tide / Current data from XTide NOT FOR NAVIGATION |
Hartford, Connecticut, Tide feet
| 12 am |
| 1.2 |
| 1 am |
| 0.9 |
| 2 am |
| 0.6 |
| 3 am |
| 0.4 |
| 4 am |
| 0.3 |
| 5 am |
| 0.6 |
| 6 am |
| 1.2 |
| 7 am |
| 1.7 |
| 8 am |
| 1.9 |
| 9 am |
| 1.9 |
| 10 am |
| 1.7 |
| 11 am |
| 1.4 |
| 12 pm |
| 1.1 |
| 1 pm |
| 0.8 |
| 2 pm |
| 0.6 |
| 3 pm |
| 0.4 |
| 4 pm |
| 0.3 |
| 5 pm |
| 0.4 |
| 6 pm |
| 1.1 |
| 7 pm |
| 1.7 |
| 8 pm |
| 2.2 |
| 9 pm |
| 2.3 |
| 10 pm |
| 2.2 |
| 11 pm |
| 2 |
| Rocky Hill Click for Map Thu -- 02:54 AM EDT 0.35 feet Low Tide Thu -- 05:31 AM EDT Sunrise Thu -- 07:27 AM EDT 2.06 feet High Tide Thu -- 12:59 PM EDT Moonset Thu -- 03:03 PM EDT 0.29 feet Low Tide Thu -- 08:04 PM EDT 2.46 feet High Tide Thu -- 08:21 PM EDT Sunset Thu -- 08:39 PM EDT Last Quarter Thu -- 11:54 PM EDT Moonrise Tide / Current data from XTide NOT FOR NAVIGATION |
Rocky Hill, Connecticut, Tide feet
| 12 am |
| 1 |
| 1 am |
| 0.7 |
| 2 am |
| 0.4 |
| 3 am |
| 0.4 |
| 4 am |
| 0.6 |
| 5 am |
| 1.2 |
| 6 am |
| 1.7 |
| 7 am |
| 2 |
| 8 am |
| 2 |
| 9 am |
| 1.9 |
| 10 am |
| 1.5 |
| 11 am |
| 1.2 |
| 12 pm |
| 0.9 |
| 1 pm |
| 0.6 |
| 2 pm |
| 0.4 |
| 3 pm |
| 0.3 |
| 4 pm |
| 0.5 |
| 5 pm |
| 1.1 |
| 6 pm |
| 1.8 |
| 7 pm |
| 2.3 |
| 8 pm |
| 2.5 |
| 9 pm |
| 2.4 |
| 10 pm |
| 2.1 |
| 11 pm |
| 1.7 |
FXUS61 KBOX 171750 AFDBOX
Area Forecast Discussion National Weather Service Boston/Norton MA 150 PM EDT Thu Jul 17 2025
SYNOPSIS
One more day of dangerous heat and humidity is in store for the region today. An approaching cold front may bring hit or miss showers and thunderstorms today, but much of the day will be dry.
The cold front will bring and end to the heat and humidity later tonight with beautiful dry weather Friday and Saturday. Another cold front will likely bring a round of showers and embedded thunderstorms to the region late Saturday night and/or Sunday along with the return of some humidity. This will be short-lived though as a dry and very pleasant airmass moves back in time for the start of the next work week.
NEAR TERM /THROUGH TONIGHT/
Key Messages...
* Hit or miss showers/t-storms today...but much of the day is dry * One more day of dangerous heat/humidity...Heat Indices 95-100 * Any Severe weather threat today should be isolated/localized
Details...
Today...
A shortwave and its associated cluster of showers & t-storms across the mid-Atlantic states early this morning will lift northeast. The guidance indicates that the convection may weaken as it moves northeastward into lingering mid-level ridging
However
diurnal heating may try to offset that later this morning into the mid- afternoon
Therefore
hit or miss showers and thunderstorms may cross the region this morning and into the mid afternoon. We then will need to watch for the approaching cold front and perhaps another risk for isolated/widely scattered convection late in the afternoon and evening
However
subsidence behind initial shortwave and a lot of mid level dry air will probably keep this as an isolated convective threat. Modest instability will quickly develop with Capes on the order of 1500 to 2500+ J/kg along with 25 to 30 knots of effective shear. A fair amount of 0-1 KM helicity will also develop on the order of 100 to 200+ units.
Despite a lot of favorable parameters for severe weather...there is a significant limiting factor. The mid level lapse rates are poor and the forcing is quite limited in our region with the better of it across northern New England. The HRRR is also showing rather limited 2-5 KM UH swaths which might be a red flag
That being said
given the parameters in place if some mesoscale processes can come into play there will be an isolated/localized severe wind threat and even a low risk for a weak tornado given the 0-1 KM helicity. But any severe weather threat should be isolated/localized given the limited forcing. We also should mention that with Pwats near 2"...brief torrential rainfall will also be possible with any thunderstorm.
Outside the convective threat...the majority of the day will feature heat and humidity. High temps will be in the upper 80s to lower 90s allowing heat indices to reach into the 95 to 100 degree range. Heat Advisories remain in place through 7 pm this evening.
SHORT TERM /FRIDAY THROUGH FRIDAY NIGHT/
Key Messages...
* Relief from heat & humidity later tonight with a NW breeze * Mostly sunny Fri with low humidity and highs 80-85
Details...
Tonight and Friday...
Any isolated shower & thunderstorm activity this evening will come to an end later tonight
Otherwise
the main story will be relief from the heat and humidity behind the cold front later tonight and Friday. This much drier air will be ushered in on a northwest breeze which may gust to around 25 mph later tonight into Friday morning.
Low temps tonight will be in the upper 60s to the lower 70s...but with relief from the humidity. This will be followed by mostly sunny & beautiful weather for Fri with highs mainly between 80 and 85 and very comfortable humidity levels. Quite the change from the last few days.
LONG TERM /SATURDAY THROUGH THURSDAY/
Key Messages...
* Dry & very pleasant Fri night and Sat with comfortable humidity
* More humid with a round of showers & embedded t-storms sometime late Sat night and/or Sun with locally heavy rainfall
* Dry pleasant weather returns Mon/Tue/Wed with comfortable humidity
Details...
Friday night and Saturday...
A ridge of high pressure builds over the region resulting in very pleasant weather Fri night into Sat. Low temps Fri night will probably drop into the lower to middle 50s in the outlying locations given light winds/mainly clear skies and a dry airmass in place.
Highs on Sat will be in the 80s with very comfortable humidity.
Saturday night and Sunday...
The next shortwave/cold front will approach southern New England from the west late Sat night into Sun. This will be associated with the return of some humidity and Pwats increasing to around 2 inches.
The forcing with this system looks quite impressive for July standards...so we may see a round of fairly widespread showers and embedded t-storms sometime late Sat night and/or Sun.
Monday through Wednesday...
A ridge of high pressure builds in behind the latest cold front for the start of the next work week. This will bring mainly dry and very pleasant weather to the region. Highs will mainly be in the upper 70s to the middle 80s although by next Wed may be on the warmer side of those numbers.
AVIATION /18Z THURSDAY THROUGH TUESDAY/
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
18z TAF Update...
Today...Moderate confidence.
Mainly VFR, except MVFR for the South Coast & Cape terminals.
IFR across the Islands. Some light showers and possibly a rumble of thunder over the Islands early this afternoon
Otherwise
brief showers & t- storms possible across the region this afternoon and early evening. The eastward extent of storm activity is uncertain, with greatest chances for TSRA west of ORH. SW winds may gust to between 20 and 25 knots by afternoon.
Tonight...High confidence.
Any isolated shower & t-storm activity should come to an end this evening
Otherwise
VFR conditions as a dry NW flow of air takes over later tonight into Friday. NW winds may gust between 20 and 25 knots behind the cold FROPA overnight into the first half of Friday before diminishing.
Friday... High confidence.
VFR. Gusts diminishing mid-morning. Predominantly NNE winds, though the Islands will likely turn SSE by Friday evening.
KBOS Terminal...Moderate confidence in TAF.
KBDL Terminal...Moderate confidence in TAF.
Outlook /Saturday through Tuesday/...
Saturday: VFR. Breezy.
Saturday Night: Mainly VFR, with areas MVFR possible. Breezy.
SHRA likely, chance TSRA.
Sunday: Mainly VFR, with local MVFR possible. Breezy. Slight chance SHRA, slight chance TSRA.
Sunday Night through Monday Night: VFR.
Tuesday: VFR.
MARINE
Forecaster Confidence Levels...
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Today through Friday...High confidence.
Gusty southwest winds near 25 knots develop across our near shore southern waters this afternoon given good mixing ahead of an approaching cold front. We opted to issue a small craft advisory for those near shore southern waters given it is peak boating season. We also expect marginal SCA seas to develop with long southerly fetch across the southern outer-waters by this evening into Friday so we have headlines for that too
Lastly
behind the cold expect a round of NW wind gusts of 25 knots overnight into Fri morning across our northern waters...where we will have additional small craft headlines.
Outlook /Saturday through Tuesday/...
Saturday: Winds less than 25 kt.
Saturday Night: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Seas locally approaching 5 ft. Chance of rain showers, slight chance of thunderstorms.
Sunday: Winds less than 25 kt. Seas locally approaching 5 ft.
Chance of rain showers, slight chance of thunderstorms.
Sunday Night through Tuesday: Winds less than 25 kt.
BOX WATCHES/WARNINGS/ADVISORIES
CT...Heat Advisory until 7 PM EDT this evening for CTZ002>004.
MA...Heat Advisory until 7 PM EDT this evening for MAZ003>007- 010>021-026.
RI...Heat Advisory until 7 PM EDT this evening for RIZ001>007.
MARINE...Small Craft Advisory from midnight tonight to 2 PM EDT Friday for ANZ230-250-251.
Small Craft Advisory until 8 PM EDT this evening for ANZ231>237.
Small Craft Advisory until 2 PM EDT Friday for ANZ254>256.
Area Forecast Discussion National Weather Service Boston/Norton MA 150 PM EDT Thu Jul 17 2025
SYNOPSIS
One more day of dangerous heat and humidity is in store for the region today. An approaching cold front may bring hit or miss showers and thunderstorms today, but much of the day will be dry.
The cold front will bring and end to the heat and humidity later tonight with beautiful dry weather Friday and Saturday. Another cold front will likely bring a round of showers and embedded thunderstorms to the region late Saturday night and/or Sunday along with the return of some humidity. This will be short-lived though as a dry and very pleasant airmass moves back in time for the start of the next work week.
NEAR TERM /THROUGH TONIGHT/
Key Messages...
* Hit or miss showers/t-storms today...but much of the day is dry * One more day of dangerous heat/humidity...Heat Indices 95-100 * Any Severe weather threat today should be isolated/localized
Details...
Today...
A shortwave and its associated cluster of showers & t-storms across the mid-Atlantic states early this morning will lift northeast. The guidance indicates that the convection may weaken as it moves northeastward into lingering mid-level ridging
However
diurnal heating may try to offset that later this morning into the mid- afternoon
Therefore
hit or miss showers and thunderstorms may cross the region this morning and into the mid afternoon. We then will need to watch for the approaching cold front and perhaps another risk for isolated/widely scattered convection late in the afternoon and evening
However
subsidence behind initial shortwave and a lot of mid level dry air will probably keep this as an isolated convective threat. Modest instability will quickly develop with Capes on the order of 1500 to 2500+ J/kg along with 25 to 30 knots of effective shear. A fair amount of 0-1 KM helicity will also develop on the order of 100 to 200+ units.
Despite a lot of favorable parameters for severe weather...there is a significant limiting factor. The mid level lapse rates are poor and the forcing is quite limited in our region with the better of it across northern New England. The HRRR is also showing rather limited 2-5 KM UH swaths which might be a red flag
That being said
given the parameters in place if some mesoscale processes can come into play there will be an isolated/localized severe wind threat and even a low risk for a weak tornado given the 0-1 KM helicity. But any severe weather threat should be isolated/localized given the limited forcing. We also should mention that with Pwats near 2"...brief torrential rainfall will also be possible with any thunderstorm.
Outside the convective threat...the majority of the day will feature heat and humidity. High temps will be in the upper 80s to lower 90s allowing heat indices to reach into the 95 to 100 degree range. Heat Advisories remain in place through 7 pm this evening.
SHORT TERM /FRIDAY THROUGH FRIDAY NIGHT/
Key Messages...
* Relief from heat & humidity later tonight with a NW breeze * Mostly sunny Fri with low humidity and highs 80-85
Details...
Tonight and Friday...
Any isolated shower & thunderstorm activity this evening will come to an end later tonight
Otherwise
the main story will be relief from the heat and humidity behind the cold front later tonight and Friday. This much drier air will be ushered in on a northwest breeze which may gust to around 25 mph later tonight into Friday morning.
Low temps tonight will be in the upper 60s to the lower 70s...but with relief from the humidity. This will be followed by mostly sunny & beautiful weather for Fri with highs mainly between 80 and 85 and very comfortable humidity levels. Quite the change from the last few days.
LONG TERM /SATURDAY THROUGH THURSDAY/
Key Messages...
* Dry & very pleasant Fri night and Sat with comfortable humidity
* More humid with a round of showers & embedded t-storms sometime late Sat night and/or Sun with locally heavy rainfall
* Dry pleasant weather returns Mon/Tue/Wed with comfortable humidity
Details...
Friday night and Saturday...
A ridge of high pressure builds over the region resulting in very pleasant weather Fri night into Sat. Low temps Fri night will probably drop into the lower to middle 50s in the outlying locations given light winds/mainly clear skies and a dry airmass in place.
Highs on Sat will be in the 80s with very comfortable humidity.
Saturday night and Sunday...
The next shortwave/cold front will approach southern New England from the west late Sat night into Sun. This will be associated with the return of some humidity and Pwats increasing to around 2 inches.
The forcing with this system looks quite impressive for July standards...so we may see a round of fairly widespread showers and embedded t-storms sometime late Sat night and/or Sun.
Monday through Wednesday...
A ridge of high pressure builds in behind the latest cold front for the start of the next work week. This will bring mainly dry and very pleasant weather to the region. Highs will mainly be in the upper 70s to the middle 80s although by next Wed may be on the warmer side of those numbers.
AVIATION /18Z THURSDAY THROUGH TUESDAY/
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
18z TAF Update...
Today...Moderate confidence.
Mainly VFR, except MVFR for the South Coast & Cape terminals.
IFR across the Islands. Some light showers and possibly a rumble of thunder over the Islands early this afternoon
Otherwise
brief showers & t- storms possible across the region this afternoon and early evening. The eastward extent of storm activity is uncertain, with greatest chances for TSRA west of ORH. SW winds may gust to between 20 and 25 knots by afternoon.
Tonight...High confidence.
Any isolated shower & t-storm activity should come to an end this evening
Otherwise
VFR conditions as a dry NW flow of air takes over later tonight into Friday. NW winds may gust between 20 and 25 knots behind the cold FROPA overnight into the first half of Friday before diminishing.
Friday... High confidence.
VFR. Gusts diminishing mid-morning. Predominantly NNE winds, though the Islands will likely turn SSE by Friday evening.
KBOS Terminal...Moderate confidence in TAF.
KBDL Terminal...Moderate confidence in TAF.
Outlook /Saturday through Tuesday/...
Saturday: VFR. Breezy.
Saturday Night: Mainly VFR, with areas MVFR possible. Breezy.
SHRA likely, chance TSRA.
Sunday: Mainly VFR, with local MVFR possible. Breezy. Slight chance SHRA, slight chance TSRA.
Sunday Night through Monday Night: VFR.
Tuesday: VFR.
MARINE
Forecaster Confidence Levels...
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Today through Friday...High confidence.
Gusty southwest winds near 25 knots develop across our near shore southern waters this afternoon given good mixing ahead of an approaching cold front. We opted to issue a small craft advisory for those near shore southern waters given it is peak boating season. We also expect marginal SCA seas to develop with long southerly fetch across the southern outer-waters by this evening into Friday so we have headlines for that too
Lastly
behind the cold expect a round of NW wind gusts of 25 knots overnight into Fri morning across our northern waters...where we will have additional small craft headlines.
Outlook /Saturday through Tuesday/...
Saturday: Winds less than 25 kt.
Saturday Night: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Seas locally approaching 5 ft. Chance of rain showers, slight chance of thunderstorms.
Sunday: Winds less than 25 kt. Seas locally approaching 5 ft.
Chance of rain showers, slight chance of thunderstorms.
Sunday Night through Tuesday: Winds less than 25 kt.
BOX WATCHES/WARNINGS/ADVISORIES
CT...Heat Advisory until 7 PM EDT this evening for CTZ002>004.
MA...Heat Advisory until 7 PM EDT this evening for MAZ003>007- 010>021-026.
RI...Heat Advisory until 7 PM EDT this evening for RIZ001>007.
MARINE...Small Craft Advisory from midnight tonight to 2 PM EDT Friday for ANZ230-250-251.
Small Craft Advisory until 8 PM EDT this evening for ANZ231>237.
Small Craft Advisory until 2 PM EDT Friday for ANZ254>256.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| NWHC3 - 8465705 - New Haven, CT | 36 mi | 46 min | SW 14G | 80°F | 80°F | 29.83 | ||
| NLHC3 | 41 mi | 46 min | 81°F | 66°F | 29.82 | |||
| BRHC3 - 8467150 - Bridgeport, CT | 49 mi | 46 min | SSW 15G | 83°F | 77°F | 29.77 |
Wind History for New Haven, CT
toggle option: (graph/table)
Link to 1 hour of 5 minute data for KHFD
Terminal Aerodrome Forecast (TAF) for KHFD
Wind History Graph: HFD
(wind in knots)
GEOS Local Image of north east
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