Dover, NH Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Dover, NH

April 16, 2024 4:07 PM EDT (20:07 UTC) Change Location
Sunrise 5:56 AM   Sunset 7:29 PM
Moonrise 12:11 PM   Moonset 3:08 AM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

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Marine Forecasts
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ANZ154 Coastal Waters From Cape Elizabeth, Me To Merrimack River, Ma Out 25 Nm- 310 Pm Edt Tue Apr 16 2024

Tonight - N winds 5 to 10 kt. Seas 3 to 4 ft.

Wed - N winds 10 to 15 kt with gusts up to 20 kt, becoming se 5 to 10 kt in the afternoon. Seas 2 to 4 ft.

Wed night - S winds 5 to 10 kt, becoming E after midnight. Seas 2 to 3 ft.

Thu - E winds 5 to 10 kt. Seas around 2 ft.

Thu night - SE winds 5 to 10 kt. Seas around 2 ft.

Fri - SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft.

Fri night - S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. A chance of showers in the evening, then rain likely after midnight.

Sat - SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Rain likely in the morning, then a chance of showers in the afternoon.

Sat night - W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.

Sun - W winds 10 to 15 kt with gusts up to 20 kt, becoming sw in the afternoon. Seas 2 to 3 ft.

Sun night - W winds around 10 kt, becoming nw after midnight. Seas 2 to 3 ft.

ANZ100 310 Pm Edt Tue Apr 16 2024

Synopsis for stonington me to merrimack river ma out to 25 nm a weak frontal boundary crosses the waters this afternoon and evening turning winds to northerly through early Wednesday high pressure then gradually builds across the waters through Thursday before low pressure approaches from the west late in the week with another cold front forecast to cross the waters on Saturday. High pressure will then build toward or south of the waters Sunday into early next week.


7 Day Forecast for Marine Location Near Dover, NH
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Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 161939 AFDGYX

Area Forecast Discussion National Weather Service Gray ME 339 PM EDT Tue Apr 16 2024

SYNOPSIS
High pressure nearby will ensure a quiet period of spring weather in New England for much of this week. Temperatures will trend cooler as an onshore component to surface flow builds, culminating in the passage of a frontal system with light rain late in the week. Quiet, mild, and dry weather, this time with more westerly flow, returns by the start of next week.

NEAR TERM /TONIGHT/
Sufficient low-level moisture and a small amount of instability has resulted in a pretty decent cu field across much of the area this afternoon, but the overall atmosphere is likely too dry to support any shower activity. The exception may be across the far north where the moisture is a little better, and I have included a slight shower chance (20%) into this evening.

Northwest winds will continue to be breezy through this afternoon generally gusting to around 25 mph, but these will diminish toward sunset as well as the cu field south of the mountains. The mountains will stay cloudier a little longer, but these will erode tonight as a bigger push of drier air works in from the north. Clearing skies and drier air will allow for another seasonably cool night, but winds overall look a tad higher than last night/this morning, so I don't think radiational cooling will be quite as efficient in most places.
Still, lows are expected to be in the upper 20s across the north and 30s elsewhere.

SHORT TERM /WEDNESDAY THROUGH WEDNESDAY NIGHT/
Broad high pressure will be positioned well north of the area during the day on Wednesday with a light north to northwest flow in place. The airmass will be very dry with precipitable water progged to be around 0.25" giving us plenty of sunshine.
Temperatures will again be warm, and given the dry air, I have gone slightly above guidance putting temperatures in the upper 50s to lower 60s for much of the area. Coastal areas are expected to be slightly cooler with the flow not being enough to hold off the seabreeze, which will bring in the chillier marine air from the Gulf of Maine.

The airmass will remain dry Wednesday night, keeping skies mostly clear for most of the area, and winds will also be light.
To account for radiational cooling, I have followed more closely to MOS guidance with the exception being across southern NH, where an increase in clouds is expected to keep temperatures milder. So I have forecast lows in the mid 30s to lower 40s there with mid 20s to lower 30s across the remainder of the area.



LONG TERM /THURSDAY THROUGH TUESDAY/
A mostly dry but quintessential New England Spring period of weather continues through the long term, starting with a bout of cool onshore flow with offshore high pressure and eventually ending in milder westerly flow. Precipitation chances continue to hold off late this week with a dry ridge overhead shunting the northern stream trough... though most or all places can expect a round or two of light rain between late Thursday and Saturday. High pressure returns after that point, but with a drier continental source region which should keep conditions relatively pleasant overall.

Starting Thursday... a ridge of high pressure will be in control over eastern NOAM, with its surface reflection centered over Maritime Canada. An upper level trough meanwhile will be skirting across the Boundary Waters and into the upper Great Lakes... with a preceding shortwave pushing into the Northeast ahead of the larger system. The resulting gradient flow will bring a building onshore component of surface flow, while the airmass above the boundary layer remains quite dry Thursday into Friday. The dry air aloft continues to trend tougher to erode... with the preceding shortwave's weak forcing unlikely to overcome this, still only offering a slight/low chance of rain showers Thursday, mainly in the mountains and CT River Valley.
The bigger question will be, if we can get the cooler marine layer in at the surface... MOS guidance seems to think so, with highs on Thursday in the 50s, coolest along the coast and southern interior.

Should it be a proper marine layer coming in with marine stratus and weak/no mixing, would expect temperatures near SSTs in the low-40s along the coast. But, marine stratus looks more likely to form later Thursday night or Friday if at all... as low pressure and an attendant cold front approaches from the Great Lakes region, producing an increasing southerly flow and bringing deeper moisture, at least enough for widespread light rain as the system crosses Friday into Saturday. Large-scale, upper-level cyclonic flow will persist through the weekend with daily chances for mountain showers. Gradient flow meanwhile will switch more westerly/offshore... which will allow for better mixing, and in turn breezier flow and temperatures closer to seasonal averages in the 50s to low-60s.

The upper air pattern early next week is likely to remain weakly cyclonic or zonal, with high pressure building to the south. This sort of set up is likely to result in a pleasant and dry stretch of weather to start the coming work week, with varying degrees of southerly onshore flow for the Midcoast depending on where the high sets up to our south.

AVIATION /19Z TUESDAY THROUGH SUNDAY/
Short Term...VFR expected through Wednesday night. Winds gusting to around 20-25 kt this afternoon will diminish this evening and tonight. Northerly winds will be lighter on Wednesday, and this will allow a seabreeze to move inland during the afternoon. The seabreeze will result in a wind shift at coastal sites in the 17Z to 19Z timeframe, and it may progress far enough to inland to reach MHT and CON by 22Z to 23Z Wednesday.

Long Term...VFR likely on Thu with E or SE winds AOB 15 kts.
There's a chance that IFR/LIFR CIGs develop for coastal and interior locations Thu night, and would likely persist through Fri and into Sat with periods of -RA providing MVFR otherwise.
VFR returns, except perhaps at KHIE in MVFR CIGs , behind this wave for the start of next week.

MARINE
Short Term...Conditions expected to remain below SCA levels through Wednesday night. Another weak frontal boundary will cross the waters later this afternoon and evening, turning winds northerly through early Wednesday along with a slight increase in gusts. A seabreeze develops Wednesday afternoon resulting in a more a southerly flow across the waters before high pressure becomes centered north of the waters Wednesday night swinging winds back to east to northeast.

Long Term...E to SE gradient flow builds Thu into Fri then turns S to SW as a cold front crosses on Saturday with winds generally remaining AOB 20 kts or so, though a brief SCA may be needed around the time of frontal passage. W flow prevails into early next week.

GYX WATCHES/WARNINGS/ADVISORIES
ME...None.
NH...None.
MARINE...None.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
BGXN3 - Great Bay Reserve, NH 10 mi83 min WNW 9.9 64°F 30.0438°F
SEIM1 11 mi50 min 64°F 48°F30.0431°F
WEXM1 - Wells Reserve, ME 19 mi68 min W 8.9 64°F 28°F
44073 21 mi183 min W 9.7G14 55°F 44°F
IOSN3 - Isle of Shoals, NH 21 mi68 min WNW 21G24 59°F 30.0022°F
44030 - Buoy B0102 - Western Maine Shelf 24 mi124 min WSW 3.9G5.8 53°F 45°F4 ft30.01
44007 - PORTLAND 12 NM Southeast of Portland,ME 45 mi38 min E 3.9G5.8 54°F 47°F30.0037°F
44098 - Jeffrey's Ledge, NH (160) 46 mi42 min 47°F3 ft
CASM1 - 8418150 - Portland, ME 46 mi50 min WNW 9.9G14 63°F 44°F29.98
44029 - Buoy A0102 - Mass. Bay/Stellwagen 49 mi124 min SE 7.8G7.8 51°F 47°F3 ft30.05


Wind History for Portland, ME
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KDAW SKYHAVEN,NH 6 sm16 minNW 12G2110 smPartly Cloudy66°F32°F28%30.01
KPSM PORTSMOUTH INTL AT PEASE,NH 9 sm12 minW 12G2010 smPartly Cloudy66°F28°F24%30.00
KSFM SANFORD SEACOAST RGNL,ME 16 sm11 minWNW 14G1910 smClear64°F28°F26%30.02
Link to 5 minute data for KDAW


Wind History from DAW
(wind in knots)
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Tide / Current for Salmon Falls River entrance, Piscataqua River, New Hampshire
   
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Salmon Falls River entrance
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Tue -- 01:37 AM EDT     1.42 feet Low Tide
Tue -- 03:08 AM EDT     Moonset
Tue -- 05:58 AM EDT     Sunrise
Tue -- 07:38 AM EDT     6.62 feet High Tide
Tue -- 12:10 PM EDT     Moonrise
Tue -- 02:30 PM EDT     0.81 feet Low Tide
Tue -- 07:28 PM EDT     Sunset
Tue -- 08:32 PM EDT     5.92 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Salmon Falls River entrance, Piscataqua River, New Hampshire, Tide feet
12
am
2.1
1
am
1.5
2
am
1.5
3
am
2.1
4
am
3.2
5
am
4.6
6
am
5.8
7
am
6.5
8
am
6.6
9
am
6.1
10
am
5.1
11
am
3.7
12
pm
2.4
1
pm
1.4
2
pm
0.9
3
pm
0.9
4
pm
1.6
5
pm
2.8
6
pm
4.2
7
pm
5.2
8
pm
5.8
9
pm
5.9
10
pm
5.3
11
pm
4.4



Tide / Current for Portsmouth Harbor Entrance, New Hampshire Current
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Portsmouth Harbor Entrance
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Tue -- 01:52 AM EDT     0.00 knots Slack
Tue -- 03:07 AM EDT     Moonset
Tue -- 03:39 AM EDT     0.79 knots Max Flood
Tue -- 05:58 AM EDT     Sunrise
Tue -- 07:34 AM EDT     -0.00 knots Slack
Tue -- 10:32 AM EDT     -1.59 knots Max Ebb
Tue -- 12:10 PM EDT     Moonrise
Tue -- 02:40 PM EDT     0.00 knots Slack
Tue -- 04:23 PM EDT     0.65 knots Max Flood
Tue -- 05:33 PM EDT     0.60 knots Min Flood
Tue -- 06:40 PM EDT     0.65 knots Max Flood
Tue -- 07:27 PM EDT     Sunset
Tue -- 08:25 PM EDT     -0.00 knots Slack
Tue -- 11:06 PM EDT     -1.21 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Portsmouth Harbor Entrance, New Hampshire Current, knots
12
am
-1
1
am
-0.6
2
am
0.1
3
am
0.7
4
am
0.8
5
am
0.6
6
am
0.5
7
am
0.3
8
am
-0.3
9
am
-1.1
10
am
-1.5
11
am
-1.6
12
pm
-1.5
1
pm
-1.2
2
pm
-0.5
3
pm
0.2
4
pm
0.6
5
pm
0.6
6
pm
0.6
7
pm
0.6
8
pm
0.3
9
pm
-0.4
10
pm
-1
11
pm
-1.2




Weather Map
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GEOS Local Image of north east   
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Portland, ME,



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