Page Links Change Location One Page Printer Page HELP AIS Default setup SAVE setting RECALL saved setting

Marine Weather and Tides Castine, ME Version 3.4

NOTICE 10/9/2019 Updated the Marine Zones. 9/4/2019 Fixed the weather maps due to NOAA moving them. 7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

---

Sunrise 6:55AM

Sunset 3:56PM

Friday December 6, 2019 10:12 AM EST (15:12 UTC)

Moonrise 2:26PM

Moonset 1:51AM

Illumination 72%

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.

---

---

7 Day Forecast for Marine Location Near Castine, ME

   Hourly   EDIT   Help

---

Area Discussion for - Gray/Portland, ME

      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KGYX 061430 AAB AFDGYX

Area Forecast Discussion . UPDATED National Weather Service Gray ME 930 AM EST Fri Dec 6 2019

SYNOPSIS. A weak area of low pressure will cross the region this afternoon. Much colder air will sweep across the forecast area tonight and Saturday. Warmer temperatures and some rain are expected early next week before a cold front brings in another dose of Arctic cold during the second half of the next work week.

NEAR TERM /UNTIL 6 PM THIS EVENING/. 930 AM Update . GOES satellite and radar imagery are showing snow moving across NY State and into Vermont this morning. Have only changed weather and QPF/snow amounts lightly as near term CAM models are still indicating 1-3" across southern NH through tonight, with less coverage north and east. Short of an advisory, we will likely issue an SPS for slick commutes this afternoon. Still we have a little way to go with top-down saturation with dew points only in the lower teens in NH and ME.


Update . Have updated the forecast based on current observations and latest radar imagery. Have upped snowfall amounts slightly over southern portions of the forecast area. Latest mesoscale model trends have increased the QPF for southern New Hampshire and extreme southwest Maine overnight. Otherwise, just minor changes to the latest forecast package.

Prev Disc . Scattered upslope snow showers will gradually end over the mountains this morning.

A clipper type system will then cross the region this afternoon. Have leaned closely towards the higher pops of the latest HRRR as snow will likely develop over southern New Hampshire during the late morning hours before pushing east. With the track of this system, expect an inch or two snow accumulation across southern New Hampshire and into portions of York County in Maine. Some of the higher elevations over southern New Hampshire may pick up a little more in the way of precipitation. Further to the north, there may be a only a coating of snow.

Winds will become light this afternoon in advance of this weak system with highs in the 20s to lower 30s in most areas.

SHORT TERM /6 PM THIS EVENING THROUGH SUNDAY/. Light snow continues for a short period along and near the coastline as the low slowly intensifies as it exits into and through the Gulf of Maine.

Much colder air will follow this system on northwesterly breezes tonight with upslope snow showers continuing in the mountains. By Saturday, the core of the cold air will be over the region. There will be good mixing with temperatures in the -14C to -18C range, yielding highs only in the teens and 20s across the region.

Saturday night will likely be the coldest night over the next few days as high pressure crests over the region. There is the potential for good radiational cooling in some areas with a fresh snowfall and clear skies. Question will be the gradient and whether or not winds can go calm during the night as a ridge of high pressure remains to our west during much of the night. Nevertheless, expect readings in the single numbers in many areas.

Sunday will remain fair and dry as high pressure begins to exit off the coastline. A gradual warm up will begin as well which sets us up for the long range portion of the forecast.

LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/. The high pressure ridge will crest across New England on Sunday and continue eastward into the Central Atlantic and strengthen on Monday and Tuesday. A shortwave will dive southeast through the High Plains over the weekend and will lead to the development of low pressure across the Great Lakes on Monday. The low will strengthen as it rides east-northeastward through the eastern Great Lakes and down the Saint Lawrence River Valley through late Tuesday. Moisture will ride north on the western periphery of the ridge, and the strengthening low pressure center will lead to the development of widespread precipitation across the northeast. Some spotty precipitation is possible by the late morning hours Monday, but the bulk of the precipitation looks to arrive late in the afternoon and evening Monday. The steadiest precipitation from this round looks most likely to wind down by Tuesday Morning, but showers may linger through the afternoon on Tuesday.

The progression of the frontal boundary has been the subject of some disagreement between the models late Tuesday and into Wednesday. The GFS has been progressively slower with the frontal passage over the past several runs, and the latest ECMWF has lurched to a slower fropa solution. This has implications for precipitation, with another round of moisture riding north along this front late Tuesday and into early Wednesday. This would lead to another period of predominantly rainfall, with very little if any break from the first round.

An extended period of warm air advection will initiate on Sunday, occuring above the surface earlier on Sunday. Temperatures will be slow to rise above freezing near the surface across interior sections through Monday morning, but the threat for any light freezing rain at the onset of the precipitation appears to be diminishing with the arrival of the precipitation not being until later on the day Monday. Additionally, with the extended period of WAA lasting into Tuesday, warming above freezing appears inevitable at this point across the entire CWA, with temperatures warming into the 50s across the coastal plain.

Once the frontal boundary passes, CAA will take hold on Wednesday as an Arctic high pressure center builds across the region Thursday and Friday. Long range deterministic models and ensembles support below normal temperatures late in the week, perhaps aided by a secondary cold front. Unsettled weather is likely to persist after cold FROPA under mean troughing, most likely relegated to the upslopes.

AVIATION /14Z FRIDAY THROUGH TUESDAY/. Short Term . VFR conditions in the north with MVFR and areas of LIFR conditions in snow over southern sections today. Conditions improve tonight outside the mountains on brisk northwesterly breezes. VFR conditions will then dominate through Sunday.

Long Term . Ceilings lower and rain overspreads the area Monday with likely degradation to MVFR CIGS, IFR CIGs/VSBY in pockets of heavier rainfall. Southerly surface winds generally <15kts gradually turn westerly by Wednesday behind the cold front with gusty winds likely. Remaining rain gradually turns to snow Tuesday night into Wednesday with additional drops in VSBY likely.

MARINE. Short Term . Winds continue to gradually ease this morning. SCAs are now in effect for late tonight into Saturday. Northwesterly winds will increase behind the departing clipper tonight.

Long Term . Along with SCA seas, a period or two of Gale Force winds are possible, primarily Monday and Tuesday nights. Timing may differ based on model trends.

GYX WATCHES/WARNINGS/ADVISORIES. ME . None. NH . None. MARINE . Small Craft Advisory from midnight tonight to 4 PM EST Saturday for ANZ150-152-154.

NEAR TERM . Hanes SHORT TERM . Cannon LONG TERM . Casey/Clair

---

Weather Reporting Stations

   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
44033 - Buoy F0103 - West Penobscot Bay	25 mi	128 min	W 16 G 21	29°F		1 ft	1014 hPa
ATGM1 - 8413320 - Bar Harbor, ME	32 mi	54 min	NNW 12 G 17	29°F	42°F		1015.2 hPa
44034 - Buoy I0103 - Eastern Maine Shelf	42 mi	128 min	W 19 G 23	32°F	48°F	4 ft	1014.4 hPa
MDRM1 - Mt Desert Rock, ME	46 mi	72 min	W 17 G 22				1015.1 hPa (+1.8)

Wind History for Bar Harbor, ME

(wind in knots)    EDIT      (on/off)   Help

10 AM

11 AM

12 PM

1 PM

2 PM

3 PM

4 PM

5 PM

6 PM

7 PM

8 PM

9 PM

10 PM

11 PM

12 AM

1 AM

2 AM

3 AM

4 AM

5 AM

6 AM

7 AM

8 AM

9 AM

Last 24hr

N8

N7

N6 G9

NW9

NW5

NW6 G9

NW5

NW5

N11

NW10

NW14

NW13

NW7 G10

NW8 G12

NW8 G16

NW12 G17

NW14 G18

NW14 G17

N9 G15

NW8 G12

NW10 G14

NW9 G18

NW14 G20

NW11 G18

1 day ago

NW4 G9

NW8 G12

NW6

NW4

N1

S1

W2

W1

NW1

NW3

NW2

NW3

N5

NW3

NW4

NW6

NW5

NW8

NW5

NW7 G10

NW6

NW7 G10

N6

NW6

2 days ago

NE19 G25

NE19 G23

E17 G24

NE15 G21

NE14 G18

N11 G16

N13 G20

N16 G21

N16 G28

N18 G25

N17 G24

N15 G24

N16 G23

N19 G26

N17 G23

N17 G22

NW13 G16

NW14 G20

NW13 G16

NW10 G17

NW8 G12

NW8 G13

NW10 G14

NW5 G9

---

Airport Reports

    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.

Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Bar Harbor, Hancock County-Bar Harbor Airport, ME	23 mi	76 min	W 7	10.00 mi	Overcast	27°F	16°F	63%	1015.4 hPa

Link to 5 minute data for KBHB

Wind History from BHB (wind in knots)

11 AM

12 PM

1 PM

2 PM

3 PM

4 PM

5 PM

6 PM

7 PM

8 PM

9 PM

10 PM

11 PM

12 AM

1 AM

2 AM

3 AM

4 AM

5 AM

6 AM

7 AM

8 AM

9 AM

10 AM

Last 24hr

3

W4

SW5

W4

W4

W3

W3

NW3

NW5

NW5

NW4

W3

W6

W6

6

W5

W8

W7

W9

W4

3

4

W7

W8

1 day ago

SW3

SW5

S4

Calm

Calm

Calm

Calm

Calm

N4

N3

N3

N3

Calm

NW3

Calm

Calm

NW3

Calm

NW3

Calm

Calm

Calm

Calm

NW4

2 days ago

N17 G26

N13 G24

N10 G21

N10 G15

N12 G23

N10 G20

N11 G22

N13 G20

N14 G24

N14 G19

N10 G19

N9 G18

NW9 G15

NW11 G17

N8 G16

NW7

W7

W8

W7

W3

SW4

5

SW3

SW4

---

Tide / Current Tables for Castine, Penobscot Bay, Maine

   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data

---

Tide / Current Tables for Fort Point, Penobscot River, Maine

   EDIT      (on/off)   Help   One Week of Data

---

Weather Map

       (on/off)   Help Weather Map

---

GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East

---

Wind Forecast for Gray/Portland, ME (10,2,3,4)

      (on/off)   Help

---

Ground Weather Radar Station Portland, ME

   (on/off)   Help

---

Cookie Policy: This webiste uses cookies to save your settings. No personal information is saved. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser. Privacy Policy: I do not sell or share any user data or anything else for that matter. I do not keep site logs longer than I need to to keep bad actors off the site. Basically, I delete them after looking at them. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway. Disclaimer: The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.