Castine, ME Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Castine, ME


December 10, 2023 10:55 AM EST (15:55 UTC)
Sunrise 6:59AM   Sunset 3:55PM   Moonrise  5:28AM   Moonset 3:04PM 

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. Privacy and Cookie policy

Marine Forecasts
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ANZ151 Penobscot Bay- 731 Am Est Sun Dec 10 2023
.storm warning in effect from late tonight through Monday evening...
Today..S winds 5 to 10 kt with gusts up to 20 kt, increasing to 10 to 15 kt with gusts up to 25 kt this afternoon. Seas 2 to 4 ft. Patchy fog this morning. Patchy fog late. A chance of rain early this afternoon. Rain likely late. Vsby 1 to 3 nm.
Tonight..S winds 25 to 30 kt with gusts up to 40 kt. Seas 3 to 5 ft, building to 4 to 7 ft after midnight. Rain. Vsby 1 to 3 nm.
Mon..S winds 25 to 35 kt with gusts up to 50 kt. Seas 6 to 9 ft. Rain. Vsby 1 to 3 nm.
Mon night..W winds 15 to 20 kt with gusts up to 35 kt, diminishing to 10 to 15 kt with gusts up to 25 kt after midnight. Seas 5 to 8 ft, subsiding to 3 to 5 ft after midnight.
Tue..W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Tue night..SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft.
Wed..W winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 4 ft.
Wed night..NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft.
Thu..NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 30 kt. Seas around 2 ft.
Thu night..W winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 25 kt. Seas 1 foot or less, then around 2 ft after midnight.

ANZ100 731 Am Est Sun Dec 10 2023
Synopsis for stonington me to merrimack river ma out to 25 nm high pressure slips east and southerly winds start to increase today with increasing odds for rain and fog. A front will approach the waters and stall as a significant low pressure rides north along it. Storm force winds are expected across the outer waters and penobscot bay with gales in casco bay. During the day Monday winds shift to westerly and will remain quite gusty. Fair conditions towards the latter half of the week will allow winds and seas to gradually diminish.


7 Day Forecast for Marine Location Near Castine, ME
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Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 101227 AFDGYX

Area Forecast Discussion National Weather Service Gray ME 727 AM EST Sun Dec 10 2023

SYNOPSIS
Moisture begins increasing today as a significant storm approaches passing through the area tonight through Monday.
This storm will bring the potential for damaging winds, flooding rainfall, and snow across the north. Upslope snow showers linger into midweek before high pressure brings quieter conditions for the end of the week.

NEAR TERM /UNTIL 6 PM THIS EVENING/
730 AM Update... Widespread dense fog has developed across the region south of the mountains and therefore went ahead and issues a dense fog advisory for southwestern ME and southern NH which will run until 10am. The latest HRRR indicates visibility should gradually improve some late this morning but fog is likely to persist through much of the day. Otherwise just loaded in the latest sfc observations.

Previously...
The latest RAP pressure analysis this morning shows high pressure now well offshore with a cold front to our west over NY state. Satellite imagery shows a plethora of stratus over the region and ASOS visibility observations indicate that widespread fog has developed, some of which is locally dense.
The latest HRRR suggests that dense fog will become more common through the remainder of the morning and therefore will continue to monitor trends for the possible need of a dense fog advisory. If traveling early this morning across the interior please use extra caution as locally slick spots are possible across locations that received freezing drizzle last night.

The aforementioned front will approach the area today as low pressure forms near the Mid-Atlantic states. This will result in rain to develop from west to east during the afternoon and evening hours. There will be a large temperature gradient across the area with lower to middle 50s along the coast and perhaps even upper 50s in southern NH. Further north and across the interior foothills the CAD will hold strong, keeping temperatures only into the upper 30s and lower 40s. This CAD will also limit wind potential from the increasingly strong southerly LLJ. Patchy to areas of fog are likely to persist at times through the day as well.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM MONDAY/
Low pressure will ride along the stalled frontal boundary and move across the area tonight into Monday while undergoing cyclogenesis as the 500mb trough axis becomes negatively tilted.
Below is a breakdown of the expected hazards that this winter system will bring.

Rain/Flooding: The combination of increased forcing and PWATs soaring to around +5 standard deviations will result in increased rainfall rates with an increasing hydro threat tonight into Monday. For more information on this please see the hydrology section below. Still expecting between generally 2-4" of rain with localized higher amounts possible. The flood watch remains in effect for the area but did go ahead and cancel it for northern Grafton as more snow is now expected there.

Wind: Latest guidance indicates that the core of the 925 mb 80-90 kt LLJ will likely just skirt our coastline before moving onshore of Downeast ME. Forecast soundings still show a steep sfc inversion lingering tonight through early Monday morning, thus keeping the vast majority of the winds aloft. Along the coast this inversion is not expected to linger as long and therefore wind gusts of between 45-50 mph are expected with gusts up to around 60 mph towards coastal Waldo and Knox counties. Therefore, went ahead and issued a high wind warning for these 2 zones and a wind advisory along the remainder of the coast.

Snow: Model consensus continues to grow that strong dynamic cooling of the column will occur on the backside of this system as strong FGEN forcing moves in aloft. This will allow for rain to transition to heavy wet snow after midnight tonight and persist through much of Monday across northern NH, towards the Canadian Border in western ME, and perhaps even further south along the CT River Valley. The latest WPC snowband probability tracker (SPT) indicates the potential for snowfall rates of between 1-2"/hr across these areas late tonight through Monday, which will result in dangerous travel conditions. The snow will also be heavy and wet as the columns becomes isothermal and therefore power outages are possible. A winter storm warning has been issued for Northern Coos with an advisory for southern Coos and northern Grafton. Should guidance trend colder then this may need to be expanded.

Coastal Flooding: The threat for coastal flooding remains low but pockets of minor coastal flooding/splash-over is still possible, especially near high tide.

LONG TERM /MONDAY NIGHT THROUGH SATURDAY/
Models continue to indicate mostly mobile troughs at 500 mb across NOAM and environs through the week and into next weekend.
There may be some amplification of a trough mid week, but this is followed by a mildly amplified ridge late in the week into the weekend. All in all, temps run near to a little below normal Tue-Thu, and then trend above normal Fri into next weekend. Will see a round of mountain SHSN Wed, and then again possible next weekend, but no storms or even moderate precip producers are expected.

Seasonable temps move in for Tue-Wed, with a break in the mountain SHSN Tue and Tue night, but they return on Wed as a cold front approaches from the W. Highs both days range from around 30 in the mtns to around 40 in the S. Colder air moves in Thu, with upslope SHSN likely. Some weaker ridging ridging moves in for Friday and Sat, but source of air is from the Pacific, so temps warm into the mid 30s N to mid 40s S. A weak system may move in for next Sunday with some precip possible, but this low confidence this far out.

AVIATION /13Z SUNDAY THROUGH THURSDAY/
Short Term...IFR/LIFR restrictions will persist through this morning as low ceilings and FG linger. RA moves in from W-E this afternoon and continues through much of Monday. Periods of +RA are possible and widespread fog is likely with IFR/LIFR restrictions persisting. Southerly winds will gradually increase tonight before peaking on Monday. Gusts up to 40 kts are possible at KPSM and KPWM with 50 kt possible at KRKD. Southerly winds will become westerly on Monday behind a cold front with widespread gusts to around 30 kts. RA will transition to RASN overnight tonight before becoming mainly SN on Monday at KHIE with IFR restrictions likely. LLWS can be expected today as well as a warm front lifts northward.

Long Term... Quick improvement to VFR Monday evening at all but KHIE/KLEB, which will likely be MVFR, with KHIE dropping to IFR at times in SHSN. Winds also diminish Monday evening. All terminals should see VFR by midday Tue, although KHIE could drop again late Tue night or Wed as another cold front approaches.
VFR expected again by Thu at all terminals

MARINE
Short Term...Low pressure will ride along a stalled frontal boundary tonight into Monday, bringing storm force winds and seas of 15-20 ft across the outer waters with 4-8 ft in the bays. Gales are expected in Casco Bay.

Long Term...Winds/seas likely to drop below SCA by Tue morning, but sub-SCA conds will be short lived as SW flow increases ahead of a cold front Tue night into Wed, with NW winds likely to continue at SCA levels into Thu.

HYDROLOGY
Flood watch remains in effect for tonight through Monday evening, with continued river rises thereafter. The warm temperatures and more notably dewpoints above freezing south of the mountains will combine with blustery/strong winds to decimate the snowpack from the foothills southward. The accompanying heavy rainfall will combine with snowmelt to cause rapid rises on area streams and rivers. Contrarily, the snow in the higher terrain is cold and dry, which supports less snowmelt. The headwaters are still likely to experience flooding just from the 1 to 3 inches of rainfall even with less snowmelt. The rainfall efficiency will be anomalous for this time of year, with the potential for an inch to fall in 6 hours early Monday. The ground conditions are in a variable state of frozen/partially frozen/and near- saturated, which in essence means there will be limited percolation and more rapid runoff.
Concerns are present for overland flash flooding during this period, which will also support rapid flooding of small streams and rivers. The mainstem rivers will swell with flooding likely into Tuesday for some forecast points. Attention will be focused on where the axis of heaviest rainfall and interior penetration of the warm dewpoints materialize.

HYDROLOGY
Flood watch remains in effect for tonight through Monday evening, with continued river rises thereafter. The warm temperatures and more notably dewpoints above freezing south of the mountains will combine with blustery/strong winds to decimate the snowpack from the foothills southward. The accompanying heavy rainfall will combine with snowmelt to cause rapid rises on area streams and rivers. Contrarily, the snow in the higher terrain is cold and dry, which supports less snowmelt. The headwaters are still likely to experience flooding just from the 1 to 3 inches of rainfall even with less snowmelt. The rainfall efficiency will be anomalous for this time of year, with the potential for an inch to fall in 6 hours early Monday. The ground conditions are in a variable state of frozen/partially frozen/and near- saturated, which in essence means there will be limited percolation and more rapid runoff.
Concerns are present for overland flash flooding during this period, which will also support rapid flooding of small streams and rivers. The mainstem rivers will swell with flooding likely into Tuesday for some forecast points. Attention will be focused on where the axis of heaviest rainfall and interior penetration of the warm dewpoints materialize.

GYX WATCHES/WARNINGS/ADVISORIES
ME...Flood Watch from 3 PM EST this afternoon through Monday evening for MEZ007>009-012>014-018>028-033.
Dense Fog Advisory until 10 AM EST this morning for MEZ012>014- 018>028-033.
Wind Advisory from 1 AM to 7 PM EST Monday for MEZ022>026.
High Wind Warning from 1 AM to 7 PM EST Monday for MEZ027-028.
NH...Flood Watch from 3 PM EST this afternoon through Monday evening for NHZ004>015.
Dense Fog Advisory until 10 AM EST this morning for NHZ006- 008>010-012>015.
Wind Advisory from 1 AM to 7 PM EST Monday for NHZ014.
Winter Storm Warning from 1 AM to 7 PM EST Monday for NHZ001.
Winter Weather Advisory from 1 AM to 7 PM EST Monday for NHZ002-003.
MARINE...Storm Warning from 1 AM to 7 PM EST Monday for ANZ150>152-154.
Gale Warning from 1 AM to 7 PM EST Monday for ANZ153.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
44033 - Buoy F0103 - West Penobscot Bay 25 mi111 min S 14G18 45°F 44°F3 ft30.02
ATGM1 - 8413320 - Bar Harbor, ME 32 mi55 min 30.02
44034 - Buoy I0103 - Eastern Maine Shelf 42 mi111 min SSW 14G18 45°F 46°F4 ft30.06
MISM1 - Matinicus Rock, ME 42 mi55 min S 17G18 45°F 30.06
MDRM1 - Mt Desert Rock, ME 46 mi55 min SSE 8.9G9.9 46°F 30.0646°F

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Wind History for Bar Harbor, ME
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KBHB HANCOCK COUNTYBAR HARBOR,ME 24 sm21 minSSW 0910 smOvercast43°F43°F100%30.04

Wind History from BHB
(wind in knots)


Tide / Current for Castine, Penobscot Bay, Maine
   
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Castine
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Sun -- 02:14 AM EST     1.35 feet Low Tide
Sun -- 04:27 AM EST     Moonrise
Sun -- 07:00 AM EST     Sunrise
Sun -- 08:30 AM EST     10.47 feet High Tide
Sun -- 02:04 PM EST     Moonset
Sun -- 02:53 PM EST     0.42 feet Low Tide
Sun -- 03:55 PM EST     Sunset
Sun -- 09:05 PM EST     9.36 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Castine, Penobscot Bay, Maine, Tide feet
12
am
3.8
1
am
2.1
2
am
1.4
3
am
1.7
4
am
2.9
5
am
5
6
am
7.3
7
am
9.3
8
am
10.3
9
am
10.3
10
am
9.3
11
am
7.3
12
pm
4.7
1
pm
2.4
2
pm
0.9
3
pm
0.4
4
pm
1.1
5
pm
2.7
6
pm
5
7
pm
7.2
8
pm
8.8
9
pm
9.4
10
pm
8.9
11
pm
7.5



Tide / Current for Fort Point, Penobscot River, Maine
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Fort Point
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Sun -- 02:14 AM EST     1.37 feet Low Tide
Sun -- 04:28 AM EST     Moonrise
Sun -- 07:00 AM EST     Sunrise
Sun -- 08:31 AM EST     10.66 feet High Tide
Sun -- 02:04 PM EST     Moonset
Sun -- 02:53 PM EST     0.43 feet Low Tide
Sun -- 03:55 PM EST     Sunset
Sun -- 09:06 PM EST     9.53 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Fort Point, Penobscot River, Maine, Tide feet
12
am
3.9
1
am
2.2
2
am
1.4
3
am
1.7
4
am
3
5
am
5.1
6
am
7.5
7
am
9.4
8
am
10.5
9
am
10.5
10
am
9.5
11
am
7.4
12
pm
4.8
1
pm
2.4
2
pm
0.9
3
pm
0.4
4
pm
1.1
5
pm
2.8
6
pm
5.1
7
pm
7.3
8
pm
8.9
9
pm
9.5
10
pm
9.1
11
pm
7.7




Weather Map
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Portland, ME,



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