Marine Weather and Tide Forecast for Dover, NH
May 5, 2024 3:08 PM EDT (19:08 UTC) Change Location
 | Sunrise 5:28 AM Sunset 7:51 PM Moonrise 4:08 AM Moonset 5:03 PM |
ANZ154 Coastal Waters From Cape Elizabeth, Me To Merrimack River, Ma Out 25 Nm- 245 Pm Edt Sun May 5 2024
Tonight - S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave detail: S 2 ft at 4 seconds and E 2 ft at 8 seconds. Rain until early morning, then scattered showers late. Patchy fog late with vsby 1 to 3 nm.
Mon - SW winds 5 to 10 kt. Seas around 3 ft. Wave detail: E 3 ft at 10 seconds and S 2 ft at 4 seconds. Patchy fog. Vsby 1 to 3 nm.
Mon night - SW winds 5 to 10 kt, becoming nw after midnight. Seas 2 to 3 ft. Wave detail: E 3 ft at 10 seconds.
Tue - N winds 5 to 10 kt, becoming sw in the afternoon. Seas 2 to 3 ft. Wave detail: S 2 ft at 5 seconds and E 2 ft at 11 seconds.
Tue night - SW winds 5 to 10 kt. Seas around 2 ft. Wave detail: S 2 ft at 4 seconds and E 2 ft at 10 seconds.
Wed - E winds 5 to 10 kt. Seas 2 to 3 ft. Wave detail: se 3 ft at 9 seconds. A chance of showers.
Wed night - NE winds around 10 kt. Seas 2 to 3 ft. A chance of showers.
Thu - E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers in the afternoon.
Thu night - E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Showers likely.
Fri - E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Showers likely, mainly in the morning.
Fri night - NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. A chance of showers.
ANZ100 245 Pm Edt Sun May 5 2024
Synopsis for stonington me to merrimack river ma out to 25 nm rain, low clouds, and some fog develop through this evening then depart Monday morning a cold front crosses the waters later Monday bringing fresh southwesterly to westerly flow and clearing conditions. Low pressure remains nearby through the week with a couple opportunities for more organized waves to traverse the waters, leading to periods of rainy weather and potentially active seas.
Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 051644 AFDGYX
Area Forecast Discussion National Weather Service Gray ME 1244 PM EDT Sun May 5 2024
SYNOPSIS
Today will feature increasing clouds followed by periods of light rain through tonight as a frontal system crosses New England. Conditions remain damp until a cold front crosses on Monday, bringing warmer and drier weather for the remainder of Monday and Tuesday. Tuesday will be especially nice with sunshine and temperatures warming into the 60s and 70s. Rainy weather returns for the middle and end of the week.
NEAR TERM /UNTIL 7 PM THIS EVENING/
1245 PM Update... Rain continues to advance eastward with light rain now being reported over most of NH and into extreme western ME and mountains. Some wet bulbing will occur as the column saturates, which will result in cooling temperatures through the remainder of the day. Made some minor adjustments to the near term portion of the forecast but the overall thinking remains on track.
Previously...
930 AM Update... A fairly small pocket of clearing located over portions of southeastern NH and southwestern ME has allowed temperatures to warm into the 50s already and therefore went ahead and raised forecast highs by a few degrees to account for this. Still expecting this to be short lived with increasing clouds through the day. Light rain is now falling over western NH and approaching central NH and this will continue to advance eastward through the day. Otherwise, no significant changes were needed at this time.
Previously...
630 AM Update...
Quick tune up of temperatures through today, but otherwise the forecast is on track.
Previously...
Humid onshore flow continues today with thickening overcast as rounds of rain enter the area from the west. The feature responsible for the incoming rain is a mid- level shortwave and an accompanying moisture axis, tracking toward the ENE on the leading side of a broader upper level trough shifting across Canada. Before rain arrives, boundary layer mixing is actually expected to be pretty good in spite of the onshore flow. This should keep ceilings a little higher, produce a steady southeasterly breeze, and allow temperatures to warm into the 50s... closer to 50 at the immediate coast.
Western New Hampshire probably won't be so lucky however with rain moving in through the morning hours... ultimately keeping temperatures mostly in the 40s to near 50. Periods of rain ultimately overtake the remainder of the forecast area through the afternoon and evening. Overall a dreary afternoon and evening with rain, low ceilings, and temperatures in the 40s.
SHORT TERM /7 PM THIS EVENING THROUGH 6 PM MONDAY/
Steady rainfall associated with the wave comes to an end from west to east tonight, between about 10 PM and 5 AM. Rainfall totals have trended a little upwards with latest model runs, with 0.3-0.6 amounts likely in most places. Lower amounts are expected near the Midcoast toward the Kennebec Valley whereas amounts on the higher end of that envelope are most likely in SW New Hampshire, and in the higher terrain of New Hampshire. Risk for impacts remains low.
There will be a lag between rainfall ending and the system's cold front crossing, which won't be until the daytime on Monday.
Thus low-level moisture will remain entrenched even as dry advection starts aloft, and thus low ceilings and a fair amount of fog development can be expected tonight.
Drier westerly flow slowly filtering down from the upper levels should allow ceilings to lift fairly quickly over the interior after sunrise Monday. Temperatures thus warm quickly with better mixing and clearing skies, into the 60s and 70s. The marine influence however will likely cause low clouds to cling to the coast into the Maine Capitol district for a few hours longer, until the cold front crosses in the early afternoon... with highs in the low- to mid-60s.
Finally, lingering low- and mid-level moisture combined with strong surface heating may spark a few convective showers as the cold front crosses Monday afternoon. With weak forcing though, I'm not expecting much to come of it except for perhaps a brief downpour.
LONG TERM /MONDAY NIGHT THROUGH SUNDAY/
The 500 Mb pattern across the N Hemisphere remains very blocky, with mostly moderate amplification, through much of next week but more amplified troughing to our W. This will act as a wave generator, and allow weak waves to move across N England over several days mid to late week, with cooler onshore flow likely again, at least part of the time.
Monday and Tuesday should be decent, although, could see some lingering SHRA early Monday, which may linger through midday in the mtns. Morning clouds give way to at least partly sunny skies in the afternoon as well. Overall the day should show gradual improvement. 850 mb temps approaching +10C should allow for for temps to rise into the 70s across much of the area, with mainly SW winds. Models suggesting more of a turn to the S along the SW ME which will not be a full sea breeze there, at least until late in the day, and highs on the coast should be mostly in the mid to upper 60s, which will be similar to the mtns. Mon night looks mainly clear and cool, with lows mostly in the 40s, but might only fall into the low 50s in srn NH. Tuesday looks slightly warmer than Monday, and with more sun as well, as sfc high crosses the region. Highs will once again be in the 70s most place, but could reach into the upper 70s in srn NH. The coast and mtns once again top out in the mid to upper 60s.
Tuesday night we start to cloud up late with lows in the 40s once again.
Things go downhill Wed as we get into a flatter pattern with a weak ridge that gets hit by waves from 500 mb closed low meandering over the west and central US. This will keep sfc high to the N with a series of lows riding to the S of it, and allow for mostly onshore flow and rounds of showers /not unlike what we saw earlier this week/. While it is not likely to rain every period in the extended, it also not likely to clear that much either in between the bouts of showers, and highs are likely to remain below normal, mainly in the 50s most days, occasionally reaching into the low to mid 60s in some spots. This pattern looks like it will hold into Saturday, bu any stronger wave that kick the closed low more quickly to the E, could kick this pattern out of the area, so confidence is low late in the forecast.
AVIATION /18Z SUNDAY THROUGH FRIDAY/
Short Term...Widespread MVFR to IFR CIGs this morning eventually give way to IFR/LIFR tonight as RA overtakes the region. Winds meanwhile are forecast to remain AOB 10 kts out of SE today, turning S tonight. RA ends, though restrictions are likely maintained in the form of BR/FG tonight. Trending to VFR Monday morning, closer to mid-day for RKD with SW/W winds.
Long Term...Mainly VFR expected Monday into Tuesday night. By Wed and Thu we will be in a familiar pattern with showers and mainly onshore flow, so flight restrictions a good bet during the period.
MARINE
Short Term...SE winds increase today with rain and some fog developing through the afternoon and evening. Periods of rain continue overnight with SE winds turning S, peaking around 20 kts Mon morning as rain exits east through the waters. Light SW winds and 3 ft seas expected for Mon.
Long Term...Winds/seas stay below SCA levels through the period although SE winds will start to pick up a bit on Wed/Thu.
GYX WATCHES/WARNINGS/ADVISORIES
ME...None.
NH...None.
MARINE...None.
Area Forecast Discussion National Weather Service Gray ME 1244 PM EDT Sun May 5 2024
SYNOPSIS
Today will feature increasing clouds followed by periods of light rain through tonight as a frontal system crosses New England. Conditions remain damp until a cold front crosses on Monday, bringing warmer and drier weather for the remainder of Monday and Tuesday. Tuesday will be especially nice with sunshine and temperatures warming into the 60s and 70s. Rainy weather returns for the middle and end of the week.
NEAR TERM /UNTIL 7 PM THIS EVENING/
1245 PM Update... Rain continues to advance eastward with light rain now being reported over most of NH and into extreme western ME and mountains. Some wet bulbing will occur as the column saturates, which will result in cooling temperatures through the remainder of the day. Made some minor adjustments to the near term portion of the forecast but the overall thinking remains on track.
Previously...
930 AM Update... A fairly small pocket of clearing located over portions of southeastern NH and southwestern ME has allowed temperatures to warm into the 50s already and therefore went ahead and raised forecast highs by a few degrees to account for this. Still expecting this to be short lived with increasing clouds through the day. Light rain is now falling over western NH and approaching central NH and this will continue to advance eastward through the day. Otherwise, no significant changes were needed at this time.
Previously...
630 AM Update...
Quick tune up of temperatures through today, but otherwise the forecast is on track.
Previously...
Humid onshore flow continues today with thickening overcast as rounds of rain enter the area from the west. The feature responsible for the incoming rain is a mid- level shortwave and an accompanying moisture axis, tracking toward the ENE on the leading side of a broader upper level trough shifting across Canada. Before rain arrives, boundary layer mixing is actually expected to be pretty good in spite of the onshore flow. This should keep ceilings a little higher, produce a steady southeasterly breeze, and allow temperatures to warm into the 50s... closer to 50 at the immediate coast.
Western New Hampshire probably won't be so lucky however with rain moving in through the morning hours... ultimately keeping temperatures mostly in the 40s to near 50. Periods of rain ultimately overtake the remainder of the forecast area through the afternoon and evening. Overall a dreary afternoon and evening with rain, low ceilings, and temperatures in the 40s.
SHORT TERM /7 PM THIS EVENING THROUGH 6 PM MONDAY/
Steady rainfall associated with the wave comes to an end from west to east tonight, between about 10 PM and 5 AM. Rainfall totals have trended a little upwards with latest model runs, with 0.3-0.6 amounts likely in most places. Lower amounts are expected near the Midcoast toward the Kennebec Valley whereas amounts on the higher end of that envelope are most likely in SW New Hampshire, and in the higher terrain of New Hampshire. Risk for impacts remains low.
There will be a lag between rainfall ending and the system's cold front crossing, which won't be until the daytime on Monday.
Thus low-level moisture will remain entrenched even as dry advection starts aloft, and thus low ceilings and a fair amount of fog development can be expected tonight.
Drier westerly flow slowly filtering down from the upper levels should allow ceilings to lift fairly quickly over the interior after sunrise Monday. Temperatures thus warm quickly with better mixing and clearing skies, into the 60s and 70s. The marine influence however will likely cause low clouds to cling to the coast into the Maine Capitol district for a few hours longer, until the cold front crosses in the early afternoon... with highs in the low- to mid-60s.
Finally, lingering low- and mid-level moisture combined with strong surface heating may spark a few convective showers as the cold front crosses Monday afternoon. With weak forcing though, I'm not expecting much to come of it except for perhaps a brief downpour.
LONG TERM /MONDAY NIGHT THROUGH SUNDAY/
The 500 Mb pattern across the N Hemisphere remains very blocky, with mostly moderate amplification, through much of next week but more amplified troughing to our W. This will act as a wave generator, and allow weak waves to move across N England over several days mid to late week, with cooler onshore flow likely again, at least part of the time.
Monday and Tuesday should be decent, although, could see some lingering SHRA early Monday, which may linger through midday in the mtns. Morning clouds give way to at least partly sunny skies in the afternoon as well. Overall the day should show gradual improvement. 850 mb temps approaching +10C should allow for for temps to rise into the 70s across much of the area, with mainly SW winds. Models suggesting more of a turn to the S along the SW ME which will not be a full sea breeze there, at least until late in the day, and highs on the coast should be mostly in the mid to upper 60s, which will be similar to the mtns. Mon night looks mainly clear and cool, with lows mostly in the 40s, but might only fall into the low 50s in srn NH. Tuesday looks slightly warmer than Monday, and with more sun as well, as sfc high crosses the region. Highs will once again be in the 70s most place, but could reach into the upper 70s in srn NH. The coast and mtns once again top out in the mid to upper 60s.
Tuesday night we start to cloud up late with lows in the 40s once again.
Things go downhill Wed as we get into a flatter pattern with a weak ridge that gets hit by waves from 500 mb closed low meandering over the west and central US. This will keep sfc high to the N with a series of lows riding to the S of it, and allow for mostly onshore flow and rounds of showers /not unlike what we saw earlier this week/. While it is not likely to rain every period in the extended, it also not likely to clear that much either in between the bouts of showers, and highs are likely to remain below normal, mainly in the 50s most days, occasionally reaching into the low to mid 60s in some spots. This pattern looks like it will hold into Saturday, bu any stronger wave that kick the closed low more quickly to the E, could kick this pattern out of the area, so confidence is low late in the forecast.
AVIATION /18Z SUNDAY THROUGH FRIDAY/
Short Term...Widespread MVFR to IFR CIGs this morning eventually give way to IFR/LIFR tonight as RA overtakes the region. Winds meanwhile are forecast to remain AOB 10 kts out of SE today, turning S tonight. RA ends, though restrictions are likely maintained in the form of BR/FG tonight. Trending to VFR Monday morning, closer to mid-day for RKD with SW/W winds.
Long Term...Mainly VFR expected Monday into Tuesday night. By Wed and Thu we will be in a familiar pattern with showers and mainly onshore flow, so flight restrictions a good bet during the period.
MARINE
Short Term...SE winds increase today with rain and some fog developing through the afternoon and evening. Periods of rain continue overnight with SE winds turning S, peaking around 20 kts Mon morning as rain exits east through the waters. Light SW winds and 3 ft seas expected for Mon.
Long Term...Winds/seas stay below SCA levels through the period although SE winds will start to pick up a bit on Wed/Thu.
GYX WATCHES/WARNINGS/ADVISORIES
ME...None.
NH...None.
MARINE...None.
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| BGXN3 - Great Bay Reserve, NH | 10 mi | 84 min | ESE 5.1 | 48°F | 30.30 | 43°F | ||
| SEIM1 | 11 mi | 51 min | 48°F | 50°F | 30.31 | 46°F | ||
| WEXM1 - Wells Reserve, ME | 19 mi | 69 min | SSE 4.1 | 50°F | 45°F | |||
| 44073 | 21 mi | 94 min | S 9.7G | 49°F | 49°F | |||
| IOSN3 - Isle of Shoals, NH | 21 mi | 69 min | SE 14G | 46°F | 30.28 | 41°F | ||
| 44030 - Buoy B0102 - Western Maine Shelf | 24 mi | 125 min | SSE 9.7G | 47°F | 48°F | 2 ft | 30.32 | |
| 44007 - PORTLAND 12 NM Southeast of Portland,ME | 45 mi | 39 min | S 12G | 47°F | 49°F | 30.31 | 44°F | |
| 44098 - Jeffrey's Ledge, NH (160) | 46 mi | 43 min | 49°F | 3 ft | ||||
| CASM1 - 8418150 - Portland, ME | 46 mi | 51 min | S 11G | 49°F | 48°F | 30.28 | ||
| 44029 - Buoy A0102 - Mass. Bay/Stellwagen | 49 mi | 125 min | SE 9.7G | 47°F | 47°F | 3 ft | 30.32 |
toggle option: (graph/table)
No data
Airport Reports
EDIT (hide/show) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| KDAW SKYHAVEN,NH | 6 sm | 17 min | SE 06 | 10 sm | Overcast | Lt Rain | 50°F | 45°F | 82% | 30.26 |
| KPSM PORTSMOUTH INTL AT PEASE,NH | 9 sm | 13 min | ESE 10 | 7 sm | Overcast | Lt Rain | 50°F | 45°F | 82% | 30.27 |
| KSFM SANFORD SEACOAST RGNL,ME | 16 sm | 12 min | SE 07 | 10 sm | Overcast | Lt Rain | 46°F | 45°F | 93% | 30.28 |
Tide / Current for Salmon Falls River entrance, Piscataqua River, New Hampshire
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Salmon Falls River entrance
Click for Map
Sun -- 04:08 AM EDT Moonrise
Sun -- 04:56 AM EDT -0.09 feet Low Tide
Sun -- 05:30 AM EDT Sunrise
Sun -- 10:52 AM EDT 7.49 feet High Tide
Sun -- 05:02 PM EDT Moonset
Sun -- 05:18 PM EDT -0.20 feet Low Tide
Sun -- 07:49 PM EDT Sunset
Sun -- 11:18 PM EDT 7.99 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 04:08 AM EDT Moonrise
Sun -- 04:56 AM EDT -0.09 feet Low Tide
Sun -- 05:30 AM EDT Sunrise
Sun -- 10:52 AM EDT 7.49 feet High Tide
Sun -- 05:02 PM EDT Moonset
Sun -- 05:18 PM EDT -0.20 feet Low Tide
Sun -- 07:49 PM EDT Sunset
Sun -- 11:18 PM EDT 7.99 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Salmon Falls River entrance, Piscataqua River, New Hampshire, Tide feet
| 12 am |
| 6.5 |
| 1 am |
| 5 |
| 2 am |
| 3.2 |
| 3 am |
| 1.4 |
| 4 am |
| 0.3 |
| 5 am |
| -0.1 |
| 6 am |
| 0.5 |
| 7 am |
| 2 |
| 8 am |
| 4 |
| 9 am |
| 5.9 |
| 10 am |
| 7.1 |
| 11 am |
| 7.5 |
| 12 pm |
| 7 |
| 1 pm |
| 5.7 |
| 2 pm |
| 3.9 |
| 3 pm |
| 2 |
| 4 pm |
| 0.5 |
| 5 pm |
| -0.2 |
| 6 pm |
| 0 |
| 7 pm |
| 1.3 |
| 8 pm |
| 3.3 |
| 9 pm |
| 5.4 |
| 10 pm |
| 7.1 |
| 11 pm |
| 7.9 |
Portsmouth Harbor Entrance
Click for Map
Sun -- 01:30 AM EDT -1.98 knots Max Ebb
Sun -- 04:08 AM EDT Moonrise
Sun -- 05:18 AM EDT 0.00 knots Slack
Sun -- 05:30 AM EDT Sunrise
Sun -- 07:20 AM EDT 1.25 knots Max Flood
Sun -- 10:56 AM EDT -0.00 knots Slack
Sun -- 01:51 PM EDT -2.09 knots Max Ebb
Sun -- 05:01 PM EDT Moonset
Sun -- 05:35 PM EDT 0.00 knots Slack
Sun -- 07:48 PM EDT Sunset
Sun -- 07:50 PM EDT 1.52 knots Max Flood
Sun -- 11:33 PM EDT -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 01:30 AM EDT -1.98 knots Max Ebb
Sun -- 04:08 AM EDT Moonrise
Sun -- 05:18 AM EDT 0.00 knots Slack
Sun -- 05:30 AM EDT Sunrise
Sun -- 07:20 AM EDT 1.25 knots Max Flood
Sun -- 10:56 AM EDT -0.00 knots Slack
Sun -- 01:51 PM EDT -2.09 knots Max Ebb
Sun -- 05:01 PM EDT Moonset
Sun -- 05:35 PM EDT 0.00 knots Slack
Sun -- 07:48 PM EDT Sunset
Sun -- 07:50 PM EDT 1.52 knots Max Flood
Sun -- 11:33 PM EDT -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Portsmouth Harbor Entrance, New Hampshire Current, knots
| 12 am |
| -1.3 |
| 1 am |
| -1.9 |
| 2 am |
| -1.9 |
| 3 am |
| -1.7 |
| 4 am |
| -1.2 |
| 5 am |
| -0.3 |
| 6 am |
| 0.7 |
| 7 am |
| 1.2 |
| 8 am |
| 1.2 |
| 9 am |
| 0.9 |
| 10 am |
| 0.6 |
| 11 am |
| -0.1 |
| 12 pm |
| -1.1 |
| 1 pm |
| -1.9 |
| 2 pm |
| -2.1 |
| 3 pm |
| -1.9 |
| 4 pm |
| -1.4 |
| 5 pm |
| -0.6 |
| 6 pm |
| 0.4 |
| 7 pm |
| 1.3 |
| 8 pm |
| 1.5 |
| 9 pm |
| 1.3 |
| 10 pm |
| 1 |
| 11 pm |
| 0.5 |
Portland, ME,
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