Thursday, April22, 2021
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Marine Weather and Tides
Southwest Harbor, ME

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 5:36AMSunset 7:30PM Thursday April 22, 2021 11:18 AM EDT (15:18 UTC) Moonrise 1:55PMMoonset 3:45AM Illumination 81% Phase: Waxing Gibbous; Moon at 11 days in cycle
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.
Marine Forecasts
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ANZ052 Intra Coastal Waters From Schoodic Point, Me To Stonington, Me- 931 Am Edt Thu Apr 22 2021
.gale warning in effect through Friday afternoon...
Today..W winds 15 to 20 kt, increasing to 20 to 25 kt late this morning and afternoon. Gusts up to 35 kt. Seas 3 to 5 ft, building to 4 to 7 ft this afternoon. A chance of rain and snow early this morning, then a slight chance of snow late this morning. A slight chance of rain late this morning and afternoon.
Tonight..W winds 25 to 30 kt with gusts up to 40 kt. Seas 4 to 6 ft.
Fri..W winds 25 to 30 kt, diminishing to 20 to 25 kt in the afternoon. Gusts up to 40 kt. Seas 3 to 5 ft.
Fri night..W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft.
Sat..W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft.
Sat night..W winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt after midnight. Seas 2 to 3 ft.
Sun..SE winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon, then becoming E in the evening, becoming N 15 to 20 kt after midnight. Seas 2 to 4 ft. Rain likely .
Mon..NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 3 to 5 ft. A chance of showers in the morning.
ANZ005 931 Am Edt Thu Apr 22 2021
Synopsis for eastport me to stonington me out 25 nm.. Intensifying low pres will move away across the maritimes through Fri. High pres will build towards the region Sat. Another low pres approaches from the sw on Sun and will depart Mon.


7 Day Forecast for Marine Location Near Southwest Harbor, ME
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location: 44.24, -68.35     debug


Area Discussion for - Caribou, ME
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FXUS61 KCAR 221353 AFDCAR

Area Forecast Discussion National Weather Service Caribou ME 953 AM EDT Thu Apr 22 2021

SYNOPSIS. Low pressure will slowly move northeast into the northern Maritimes through tonight. An upper level disturbance will remain near the region Friday. High pressure builds into the region Saturday, quickly followed by low pressure passing south of the area late Sunday into Monday.

NEAR TERM /THROUGH TONIGHT/. 945 AM Update: Outside of updating fcst hrly temps/dwpts into the aftn hrs from trends seen in latest sfc obs, only chgs made was to fcst snfl ovr the far NW mainly in the tngt pd, where model guidance varies widely with 6hrly liq equiv and snfl, spcly in the 06-12z pd. We trended back a little with best snfl usually just W of NW ME ovr the wrn slopes of the highlands between the St Lawrence and the ME/QB border in a cyclonic NW flow regime. Lastly, minor adjustments were made to fcst cld cvr for both tdy and tngt.

Prev Disc: The low is making its way to the NE with a strong cold front behind it. For today, this front will move out of Maine by this morning. Recent 1000-850mb thickness models show cooling temps in areas north of the Central Highlands to the low 30s while areas south will be in the upper 30s. This will keep the snow line in the north as the moisture lingers with this for most of today. The main concern will be the snow amounts produced. QPF model runs and WPC guidance have the majority of the snowfall in the northern and western parts of the region in the form of heavy wet snow. As the day progresses, high-res models indicate that there is a possibility of some stronger snow bands wrapping behind this system, which could increase snowfall amounts in these areas. In addition, tight pressure gradients behind the system will bring gusty WNW winds across the entire region for today into tonight.

By tonight, the majority of the precip will move N with the low, making for dryer conditions in the areas S of the Central Highlands. NAM, GFS, and high-res models are in agreement that the rest of the region should see the ending of precip around midnight. Though can't rule out a lingering snow shower in the far north as the low continues its slow trek NE. The pressure gradients will continue to tighten, creating some very gusty winds around 35 to 40 mph. Cold air behind the low will keep nighttime temps in the upper 20s.

SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/. Conditions will improve Friday as the surface and upper level lows continue to move northeast. Lingering snow showers will become more sporadic, lift north, and mix with rain throughout the day. A brisk northwest wind is expected with frequent gusts of 35 to 40mph and peak gusts around 45 to 50mph, falling just shy of advisory criteria based on current data. Due to the increased load of heavy, wet snow, these winds could lead to tree damage across northern Maine. Lesser impacts are expected elsewhere. Skies will clear across the southwestern half of the forecast area by the afternoon, with lingering cloud cover across the northeast keeping high temperatures in the 40s. Skies clear across all but the far northeast Friday night and winds decrease, but a modest pressure gradient will maintain enough of a breeze to prevent decoupling and keep lows from falling below the 30s except in the coldest sheltered locations of northern Maine.

Ridging builds across the area for Saturday with partly to mostly sunny skies and high temperatures ranging from the mid to upper 60s Downeast to mid 50s across the north. Winds will be gusty but not as strong as the previous days. Relative humidity will drop below 30 percent Downeast, which could lead to fire weather concerns for finer fuels that dry out quickly after the recent rains. Increasing clouds are expected overnight with lighter winds. Depending on timing and thickness of cloud cover, temperatures should be able to cool relatively efficiently with lows ranging from the 20s across the north to low 40s Downeast.

LONG TERM /SUNDAY THROUGH WEDNESDAY/. Conditions turn increasingly unsettled on Sunday as a couple shortwave troughs approach the area, one along the northern branch of the jet stream and one along the southern stream. Low pressure will develop off the coast with most guidance taking it close enough for a significant rainfall across the area. However, there are still several ensemble members and deterministic models such as the ICON and Canadian that take the system far enough offshore to keep the area dry. While they are outliers, they decrease confidence enough to limit PoPs to likely instead of categorical. A mild air mass will be in place, so a mainly rain event is expected. However, some mixing remains possible over far northwestern areas depending on the low track and timing of phasing between the aforementioned shortwaves. Upstream blocking will strengthen as a negative NAO forms, so the system is expected to move slowly with showers and seasonably cool temperatures lingering into Monday. Drier conditions and a warming trend can then be expected towards mid- week as ridging builds back into the region.

AVIATION /14Z THURSDAY THROUGH MONDAY/. NEAR TERM: IFR vsby/cigs with the continuing snowfall. All terminals are expected to improve to MVFR by this afternoon and VFR tonight as the snow moves north. WNW winds will be breezy with gusts around 25 to 30 kt. LLWS at northern terminals tonight.

SHORT TERM: Friday . MVFR/tempo IFR vsby/cigs across the north. VFR Downeast. Winds W 10-20kts with gusts up to 40kts.

Fri night-Sat night . VFR across all terminals. Winds W 10kts shifting S and becoming light Saturday night.

Sun-Mon . Becoming MVFR/IFR in rain. Winds S 5-15kts shifting N and increasing to 15-25 kts with gusts to 40 kts Monday.

MARINE. NEAR TERM: Increasing WNW winds and high seas 7 to 12 feet are expected this morning through tonight. A Gale Warning is still in effect for this time.

SHORT TERM: A strong gale will be ongoing Friday morning. Winds and seas will gradually subside towards SCA levels by Friday evening. SCA conditions will persist through Saturday before falling below SCA Saturday night into Sunday. Winds and seas increase again Sunday night into Monday. Gales are possible during this period depending upon the track of an area of low pressure.

CAR WATCHES/WARNINGS/ADVISORIES. ME . Winter Weather Advisory until 4 PM EDT this afternoon for MEZ003-004-010. Winter Weather Advisory until 4 AM EDT Friday for MEZ001. MARINE . Gale Warning until 4 PM EDT Friday for ANZ050>052.



Near Term . VJN Short Term . MStrauser Long Term . MStrauser Aviation . VJN/MStrauser Marine . VJN/MStrauser


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ATGM1 - 8413320 - Bar Harbor, ME 13 mi79 min NW 19 G 26 30°F 43°F993.9 hPa (+1.0)
44034 - Buoy I0103 - Eastern Maine Shelf 16 mi135 min WNW 21 G 27 34°F 42°F5 ft
MDRM1 - Mt Desert Rock, ME 22 mi79 min W 25 G 29 994.9 hPa (+1.3)
44033 - Buoy F0103 - West Penobscot Bay 37 mi135 min W 21 G 27 33°F 2 ft995.5 hPa

Wind History for Bar Harbor, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bar Harbor, Hancock County-Bar Harbor Airport, ME15 mi23 minW 7 G 172.00 miLight Snow Fog/Mist33°F29°F85%995.2 hPa

Link to 5 minute data for KBHB

Wind History from BHB (wind in knots)
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S13S12S13S11S11SW10SW4W5NW3CalmNW3CalmCalmCalmCalmN4CalmCalmE5E8SE5SW13
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2 days agoW8W5W5S16S17S12SW9SW10SW8SW6SW7SW3SW5CalmCalmCalmCalmCalmCalmCalmCalmS4SW6S13

Tide / Current Tables for Bass Harbor, Maine
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Bass Harbor
Click for Map
Thu -- 12:55 AM EDT     1.91 feet Low Tide
Thu -- 03:44 AM EDT     Moonset
Thu -- 05:37 AM EDT     Sunrise
Thu -- 07:03 AM EDT     9.75 feet High Tide
Thu -- 01:36 PM EDT     0.89 feet Low Tide
Thu -- 01:54 PM EDT     Moonrise
Thu -- 07:26 PM EDT     Sunset
Thu -- 07:48 PM EDT     9.32 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.31.92.43.85.77.79.29.79.48.16.242.11.111.93.65.77.799.38.77.25.2

Tide / Current Tables for Mackerel Cove, Maine
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Mackerel Cove
Click for Map
Thu -- 12:54 AM EDT     1.93 feet Low Tide
Thu -- 03:44 AM EDT     Moonset
Thu -- 05:38 AM EDT     Sunrise
Thu -- 07:01 AM EDT     9.84 feet High Tide
Thu -- 01:34 PM EDT     0.90 feet Low Tide
Thu -- 01:55 PM EDT     Moonrise
Thu -- 07:26 PM EDT     Sunset
Thu -- 07:46 PM EDT     9.41 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.31.92.53.95.87.89.39.89.48.26.242.11.111.93.75.97.99.19.48.77.35.2

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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