Marine Weather and Tide Forecast for Kennebunkport, ME
May 12, 2024 8:55 PM EDT (00:55 UTC) Change Location
 | Sunrise 5:17 AM Sunset 7:58 PM Moonrise 8:45 AM Moonset 12:21 AM |
ANZ154 Coastal Waters From Cape Elizabeth, Me To Merrimack River, Ma Out 25 Nm- 522 Pm Edt Sun May 12 2024
Tonight - SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave detail: E 4 ft at 9 seconds. A slight chance of showers this evening.
Mon - S winds 5 to 10 kt, becoming se with gusts up to 20 kt in the afternoon. Seas around 3 ft. Wave detail: E 3 ft at 9 seconds.
Mon night - S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave detail: S 3 ft at 4 seconds and E 3 ft at 9 seconds. A chance of showers after midnight.
Tue - S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 3 to 4 ft. Wave detail: S 4 ft at 5 seconds and se 2 ft at 8 seconds.
Tue night - S winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 3 to 5 ft. Wave detail: S 4 ft at 5 seconds. A chance of showers.
Wed - S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave detail: S 4 ft at 6 seconds. Showers likely.
Wed night - SE winds around 10 kt. Seas 2 to 3 ft. A chance of showers.
Thu - NE winds around 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers in the morning.
Thu night - NE winds 5 to 10 kt. Seas 3 to 5 ft.
Fri - NE winds around 10 kt. Seas 4 to 5 ft.
Fri night - E winds 5 to 10 kt. Seas around 4 ft.
ANZ100 522 Pm Edt Sun May 12 2024
Synopsis for stonington me to merrimack river ma out to 25 nm a broad area of of high pressure builds across the waters and passes east through tomorrow a cold front approaches the waters on Tuesday, and stalls near the coast on Wednesday. A slow moving area of low pressure passes south of the waters on Wednesday and Thursday. A weak area of high pressure then builds in for the end of the week and early weekend.
Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 122132 AFDGYX
Area Forecast Discussion National Weather Service Gray ME 532 PM EDT Sun May 12 2024
SYNOPSIS
High pressure gradually builds in and moves offshore through tomorrow. A warm front stalls through central New England on Tuesday, then a slow moving cold front stalls on Wednesday. Low pressure passing south of New England spreads moisture and showers in from late Tuesday into Thursday. Conditions dry out late in the week as New England sees a period between systems, and then likely turns unsettled again by late next weekend.
NEAR TERM /UNTIL 6 AM MONDAY MORNING/
Update...
Showers continue over the forecast area as of 2130Z per latest radar imagery and surface observations. However, with large surface dew point depressions, some of the echoes are not reaching the ground with plenty of dry air in the mid levels in the latest GYX sounding. In any case, have upped pops across portions of the region, especially in Maine. In western Maine, the latest HRRR has showers expanding through about 00Z before dissipating overnight.
Have nudged temperatures downwards for the overnight lows, especially in the Midcoast region where clear skies may allow for temperatures to drop into the 30s. Have introduced patchy frost into the forecast for the early morning and early afternoon hours.
Will continue with patchy fog and may need to expand to areas that receive rainfall this evening.
Prev Disc...
Weak sfc high just tour S, with cool upper level closed low overhead, and very weak forcing in the mid levels, has allowed for some showers to develop, mainly over the mtns early this afternoon, but they will move S during the mid to late afternoon. I think calling them sct or isolated is probably the best way to describe them, and they are all light, producing generally a few hundredths of an inch at best. I do think some of the clouds clear out tonight, but also with mid level forcing, I don’t think they clear out completely until late, and Tds are higher than Sat night. So frost is not expected in activated zones. Otherwise lows will drop into the upper 30s in the mtns and mostly the low 40s in the S.
SHORT TERM /6 AM MONDAY MORNING THROUGH MONDAY NIGHT/
On Mon, we manage to squeeze into weak ridging at all levels above the sfc, with a more SW flow at the sfc, as we sit between systems. We should a mainly sunny morning, with more clouds in the afternoon, but still a fair amount of sun. The SW flow is weak, so so coastal zones S of Casco Bay will likely a partial onshore component to the wind, but won;t be that much cooler than inland except near the midcoast. Highs range from around 60 on the mid coast to the low mid 60s inland, and near 70 in S NH.
Monday night will see clouds and showers move in during the evening and overnight as a warm front moves in. Mins will be milder and mostly in the 40s.
LONG TERM /TUESDAY THROUGH SUNDAY/
Overview...
A warm front brings warm temperatures to parts of the forecast area on Tuesday. A cut off low gradually moves through the Ohio River Valley and south of New England Wednesday and Thursday. A short wave ridge passes through on Saturday, and then another system approaches New England by next Sunday.
Details...
As a cut off low lingers across western Quebec, the warm front associated with the low makes progress into New Hampshire and parts of western Maine on Tuesday. The front likely stalls somewhere near central Maine without fully clearing the area during the daytime. With this, temps warm into the 70s to near 80 across southern New Hampshire, while parts of the MidCoast and northwestern zones may fail to make it past the upper 50s.
This forecast holds with the NBM temps for now, but the gradient is likely to be a little stronger than what it currently being shown. The big question is just how far northeastward the front makes it, with the MidCoast, Central Maine, and all northern areas standing the best chance for the front not to make enough progress for warmth.
A cold front sags southward late Tuesday through Wednesday, with showers expanding along this front as a slow moving low tracks south of the area and sends moisture northward. Showers become likely by the afternoon across northern areas on Tuesday, and gradually increase as the front moves southward into coastal areas by Wednesday. The bulk of the moisture stays south of the region, but the slowing front serves to focus shower activity on Wednesday, and possibly into Thursday as well. The front stalls, likely through the middle of the forecast area from east to west. There will be wet periods during this timeframe into Thursday, but coverage looks to gradually lessen as the forcing weakens. Some showers still can't be ruled out on Friday as the low tracks out to sea.
A quick shortwave ridge likely passes through on Saturday, but the next system will be quick on it's heals with moisture spreading in from the southwest. It's still unclear whether this ridge will pass through during the day on Saturday, or if it moves through a bit more quickly and allows showers to move in by the afternoon hours. We'll need to wait a little longer to iron out these details, but that looks like the set up at this point.
AVIATION /22Z SUNDAY THROUGH FRIDAY/
Short Term...VFR will persist through Monday and into Monday evening, but cigs and vis will drop in ?SHRA overnight, at least to MVFR, and maybe some periods of IFR.
Long Term...VFR conditions are expected across southern and western terminals on Tuesday, but some MVFR conditions are likely across coastal terminals during the day, especially at RKD where IFR conditions are possible in marine fog. Ceilings lower at all terminals with showers Tuesday night, with MVFR conditions likely and periods of IFR possible. These conditions continue on Wednesday, and then gradually improve into the day on Thursday. VFR likely doesn't return fully until Friday and lasts into Saturday. Restrictions likely return again with showers Saturday night and Sunday.
MARINE
Short Term...Winds/seas stay below SCA criteria into Monday, but could approach weak SCA winds by Mon evening.
Long Term...A cold front slowly approaches the waters on Tuesday, and stalls near the coast by Wednesday. A slow moving low pressure system passes south of the waters Wednesday and Thursday. These two features bring freshening southerly flow, becoming easterly by Wednesday and Thursday, with SCA conditions possible during this time frame. This system slowly moves eastward on Friday, with waves likely lingering near 5ft on Friday.
GYX WATCHES/WARNINGS/ADVISORIES
ME...None.
NH...None.
MARINE...None.
Area Forecast Discussion National Weather Service Gray ME 532 PM EDT Sun May 12 2024
SYNOPSIS
High pressure gradually builds in and moves offshore through tomorrow. A warm front stalls through central New England on Tuesday, then a slow moving cold front stalls on Wednesday. Low pressure passing south of New England spreads moisture and showers in from late Tuesday into Thursday. Conditions dry out late in the week as New England sees a period between systems, and then likely turns unsettled again by late next weekend.
NEAR TERM /UNTIL 6 AM MONDAY MORNING/
Update...
Showers continue over the forecast area as of 2130Z per latest radar imagery and surface observations. However, with large surface dew point depressions, some of the echoes are not reaching the ground with plenty of dry air in the mid levels in the latest GYX sounding. In any case, have upped pops across portions of the region, especially in Maine. In western Maine, the latest HRRR has showers expanding through about 00Z before dissipating overnight.
Have nudged temperatures downwards for the overnight lows, especially in the Midcoast region where clear skies may allow for temperatures to drop into the 30s. Have introduced patchy frost into the forecast for the early morning and early afternoon hours.
Will continue with patchy fog and may need to expand to areas that receive rainfall this evening.
Prev Disc...
Weak sfc high just tour S, with cool upper level closed low overhead, and very weak forcing in the mid levels, has allowed for some showers to develop, mainly over the mtns early this afternoon, but they will move S during the mid to late afternoon. I think calling them sct or isolated is probably the best way to describe them, and they are all light, producing generally a few hundredths of an inch at best. I do think some of the clouds clear out tonight, but also with mid level forcing, I don’t think they clear out completely until late, and Tds are higher than Sat night. So frost is not expected in activated zones. Otherwise lows will drop into the upper 30s in the mtns and mostly the low 40s in the S.
SHORT TERM /6 AM MONDAY MORNING THROUGH MONDAY NIGHT/
On Mon, we manage to squeeze into weak ridging at all levels above the sfc, with a more SW flow at the sfc, as we sit between systems. We should a mainly sunny morning, with more clouds in the afternoon, but still a fair amount of sun. The SW flow is weak, so so coastal zones S of Casco Bay will likely a partial onshore component to the wind, but won;t be that much cooler than inland except near the midcoast. Highs range from around 60 on the mid coast to the low mid 60s inland, and near 70 in S NH.
Monday night will see clouds and showers move in during the evening and overnight as a warm front moves in. Mins will be milder and mostly in the 40s.
LONG TERM /TUESDAY THROUGH SUNDAY/
Overview...
A warm front brings warm temperatures to parts of the forecast area on Tuesday. A cut off low gradually moves through the Ohio River Valley and south of New England Wednesday and Thursday. A short wave ridge passes through on Saturday, and then another system approaches New England by next Sunday.
Details...
As a cut off low lingers across western Quebec, the warm front associated with the low makes progress into New Hampshire and parts of western Maine on Tuesday. The front likely stalls somewhere near central Maine without fully clearing the area during the daytime. With this, temps warm into the 70s to near 80 across southern New Hampshire, while parts of the MidCoast and northwestern zones may fail to make it past the upper 50s.
This forecast holds with the NBM temps for now, but the gradient is likely to be a little stronger than what it currently being shown. The big question is just how far northeastward the front makes it, with the MidCoast, Central Maine, and all northern areas standing the best chance for the front not to make enough progress for warmth.
A cold front sags southward late Tuesday through Wednesday, with showers expanding along this front as a slow moving low tracks south of the area and sends moisture northward. Showers become likely by the afternoon across northern areas on Tuesday, and gradually increase as the front moves southward into coastal areas by Wednesday. The bulk of the moisture stays south of the region, but the slowing front serves to focus shower activity on Wednesday, and possibly into Thursday as well. The front stalls, likely through the middle of the forecast area from east to west. There will be wet periods during this timeframe into Thursday, but coverage looks to gradually lessen as the forcing weakens. Some showers still can't be ruled out on Friday as the low tracks out to sea.
A quick shortwave ridge likely passes through on Saturday, but the next system will be quick on it's heals with moisture spreading in from the southwest. It's still unclear whether this ridge will pass through during the day on Saturday, or if it moves through a bit more quickly and allows showers to move in by the afternoon hours. We'll need to wait a little longer to iron out these details, but that looks like the set up at this point.
AVIATION /22Z SUNDAY THROUGH FRIDAY/
Short Term...VFR will persist through Monday and into Monday evening, but cigs and vis will drop in ?SHRA overnight, at least to MVFR, and maybe some periods of IFR.
Long Term...VFR conditions are expected across southern and western terminals on Tuesday, but some MVFR conditions are likely across coastal terminals during the day, especially at RKD where IFR conditions are possible in marine fog. Ceilings lower at all terminals with showers Tuesday night, with MVFR conditions likely and periods of IFR possible. These conditions continue on Wednesday, and then gradually improve into the day on Thursday. VFR likely doesn't return fully until Friday and lasts into Saturday. Restrictions likely return again with showers Saturday night and Sunday.
MARINE
Short Term...Winds/seas stay below SCA criteria into Monday, but could approach weak SCA winds by Mon evening.
Long Term...A cold front slowly approaches the waters on Tuesday, and stalls near the coast by Wednesday. A slow moving low pressure system passes south of the waters Wednesday and Thursday. These two features bring freshening southerly flow, becoming easterly by Wednesday and Thursday, with SCA conditions possible during this time frame. This system slowly moves eastward on Friday, with waves likely lingering near 5ft on Friday.
GYX WATCHES/WARNINGS/ADVISORIES
ME...None.
NH...None.
MARINE...None.
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| WEXM1 - Wells Reserve, ME | 7 mi | 56 min | S 2.9 | 53°F | 47°F | |||
| 44030 - Buoy B0102 - Western Maine Shelf | 13 mi | 112 min | S 9.7G | 51°F | 51°F | 29.87 | ||
| 44007 - PORTLAND 12 NM Southeast of Portland,ME | 19 mi | 46 min | SSE 9.7G | 51°F | 50°F | 29.91 | 46°F | |
| CASM1 - 8418150 - Portland, ME | 22 mi | 56 min | SSE 5.1G | 50°F | 29.88 | |||
| SEIM1 | 26 mi | 56 min | 52°F | 29.92 | ||||
| BGXN3 - Great Bay Reserve, NH | 30 mi | 71 min | SSE 1.9 | 55°F | 29.89 | 43°F | ||
| IOSN3 - Isle of Shoals, NH | 30 mi | 56 min | SSW 14G | 52°F | 29.89 | 40°F | ||
| 44098 - Jeffrey's Ledge, NH (160) | 42 mi | 60 min | 51°F | 5 ft |
toggle option: (graph/table)
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| KSFM SANFORD SEACOAST RGNL,ME | 15 sm | 59 min | SW 03 | 10 sm | Overcast | 54°F | 43°F | 67% | 29.90 | |
| KPWM PORTLAND INTL JETPORT,ME | 20 sm | 64 min | SSE 06 | 10 sm | Overcast | 52°F | 45°F | 76% | 29.90 |
Cape Porpoise
Click for Map
Sun -- 12:21 AM EDT Moonset
Sun -- 02:49 AM EDT 9.84 feet High Tide
Sun -- 05:20 AM EDT Sunrise
Sun -- 08:45 AM EDT Moonrise
Sun -- 09:22 AM EDT -0.25 feet Low Tide
Sun -- 03:38 PM EDT 8.39 feet High Tide
Sun -- 07:56 PM EDT Sunset
Sun -- 09:30 PM EDT 1.21 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 12:21 AM EDT Moonset
Sun -- 02:49 AM EDT 9.84 feet High Tide
Sun -- 05:20 AM EDT Sunrise
Sun -- 08:45 AM EDT Moonrise
Sun -- 09:22 AM EDT -0.25 feet Low Tide
Sun -- 03:38 PM EDT 8.39 feet High Tide
Sun -- 07:56 PM EDT Sunset
Sun -- 09:30 PM EDT 1.21 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Cape Porpoise, Maine, Tide feet
| 12 am |
| 6 |
| 1 am |
| 8.1 |
| 2 am |
| 9.5 |
| 3 am |
| 9.8 |
| 4 am |
| 9.1 |
| 5 am |
| 7.4 |
| 6 am |
| 5.1 |
| 7 am |
| 2.6 |
| 8 am |
| 0.8 |
| 9 am |
| -0.2 |
| 10 am |
| -0 |
| 11 am |
| 1.1 |
| 12 pm |
| 3.1 |
| 1 pm |
| 5.3 |
| 2 pm |
| 7.1 |
| 3 pm |
| 8.2 |
| 4 pm |
| 8.3 |
| 5 pm |
| 7.5 |
| 6 pm |
| 5.9 |
| 7 pm |
| 4 |
| 8 pm |
| 2.3 |
| 9 pm |
| 1.3 |
| 10 pm |
| 1.3 |
| 11 pm |
| 2.3 |
Wood Island Harbor
Click for Map
Sun -- 12:21 AM EDT Moonset
Sun -- 02:39 AM EDT 9.94 feet High Tide
Sun -- 05:19 AM EDT Sunrise
Sun -- 08:44 AM EDT Moonrise
Sun -- 09:04 AM EDT -0.25 feet Low Tide
Sun -- 03:28 PM EDT 8.47 feet High Tide
Sun -- 07:56 PM EDT Sunset
Sun -- 09:12 PM EDT 1.23 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 12:21 AM EDT Moonset
Sun -- 02:39 AM EDT 9.94 feet High Tide
Sun -- 05:19 AM EDT Sunrise
Sun -- 08:44 AM EDT Moonrise
Sun -- 09:04 AM EDT -0.25 feet Low Tide
Sun -- 03:28 PM EDT 8.47 feet High Tide
Sun -- 07:56 PM EDT Sunset
Sun -- 09:12 PM EDT 1.23 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Wood Island Harbor, Maine, Tide feet
| 12 am |
| 6.6 |
| 1 am |
| 8.5 |
| 2 am |
| 9.7 |
| 3 am |
| 9.9 |
| 4 am |
| 9 |
| 5 am |
| 7 |
| 6 am |
| 4.5 |
| 7 am |
| 2.1 |
| 8 am |
| 0.4 |
| 9 am |
| -0.2 |
| 10 am |
| 0.2 |
| 11 am |
| 1.6 |
| 12 pm |
| 3.7 |
| 1 pm |
| 5.8 |
| 2 pm |
| 7.5 |
| 3 pm |
| 8.4 |
| 4 pm |
| 8.3 |
| 5 pm |
| 7.3 |
| 6 pm |
| 5.5 |
| 7 pm |
| 3.5 |
| 8 pm |
| 2 |
| 9 pm |
| 1.2 |
| 10 pm |
| 1.5 |
| 11 pm |
| 2.7 |
Portland, ME,
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