Wednesday, April8, 2020
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Marine Weather and Tides
Waldoboro, ME

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 6:05AMSunset 7:17PM Wednesday April 8, 2020 11:14 AM EDT (15:14 UTC) Moonrise 8:06PMMoonset 6:44AM Illumination 100% Phase: Full Moon; Moon at 15 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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ANZ150 Coastal Waters From Stonington, Me To Port Clyde, Me Out 25 Nm- 1042 Am Edt Wed Apr 8 2020
.gale watch in effect from Thursday afternoon through Friday afternoon...
Rest of today..NE winds 10 to 15 kt, becoming E 5 to 10 kt this afternoon. Seas around 2 ft.
Tonight..E winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less.
Thu..SE winds 10 to 20 kt with gusts up to 25 kt, increasing to 15 to 25 kt with gusts up to 35 kt in the afternoon. Seas 2 to 3 ft, building to 5 to 8 ft in the afternoon. Rain in the afternoon with vsby 1 to 3 nm.
Thu night..SE winds 25 to 30 kt, becoming W after midnight. Gusts up to 45 kt. Seas 8 to 11 ft. Rain in the evening, then a chance of showers after midnight. Vsby 1 to 3 nm.
Fri..W winds 20 to 25 kt with gusts up to 35 kt. Seas 7 to 10 ft, subsiding to 5 to 8 ft in the afternoon. A chance of rain.
Fri night..NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft.
Sat..W winds around 15 kt with gusts up to 25 kt. Seas 3 to 5 ft.
Sat night..W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft.
Sun..SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft.
Sun night..S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. A chance of showers.
ANZ100 1042 Am Edt Wed Apr 8 2020
Synopsis for stonington me to merrimack river ma out to 25 nm.. High pressure remains in control of the waters today. Low pressure will approach from the west Thursday and rapidly strengthen along the maine coast during the day. At least gale force wind gusts and heavy precipitation will accompany the storm before it moves off to the northeast. Gusty northwest winds will follow the system as high pressure moves in for the weekend. &&


7 Day Forecast for Marine Location Near Waldoboro, ME
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location: 43.87, -69.28     debug


Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 081458 AAB AFDGYX

Area Forecast Discussion . UPDATED National Weather Service Gray ME 1058 AM EDT Wed Apr 8 2020

SYNOPSIS. High pressure builds into the region on Wednesday before the weather turns significantly more active on Thursday as low pressure develops over the Gulf of Maine with rain and mountain snow expected. High pressure returns on Friday into Saturday with temperatures a bit below normal for this time of year.

NEAR TERM /UNTIL 6 PM THIS EVENING/. 1050 AM Update . Light radar echoes are moving across southern NH and far SW ME this morning, but nothing is reaching the ground. Temperatures and other near term parameters like sky cover and dew points were adjusted for minor differences from the forecast. Otherwise forecast is on track with the last quiet day before the rain and snow arrive Thursday.

Update . Minor changes to reflect latest observational trends.

Previous discussion . The warm front never quite made it into the forecast area . with convection remaining well to our S. Some WAA over the top of it however has brought a few very light showers to parts of Srn NH this early morning. These will move SE thru the remainder of the morning . leaving us with a dry and seasonable day. The proverbial calm before the storm.

SHORT TERM /6 PM THIS EVENING THROUGH THURSDAY NIGHT/. ***SIGNIFICANT LATE SEASON SNOWFALL POSSIBLE THURSDAY***

Rapid cyclogensis is forecast to take place over New England . as a jet streak in excess of 150 knots moves off the Mid Atlantic coast. The left exit region will reside overhead and within the diffluent region of the upper trof. Lift will be maximized . with mid level low centers quickly consolidating in the vicinity of the Wrn ME coastline.

This set up is primed for heavy precip over the local forecast area. It will move quickly into the area over the first part of Thu . as more of a WAA forced band. This will transition to a deformation band of precip as mid level lows become stacked by late afternoon. Beneath the heaviest precip evaporational and melt cooling will help to drive surface temps down towards freezing. There remains a great deal of uncertainty as to just how close to the coast that process will occur . depending on track of the low. Given the rates of precip this makes the forecast a tough call . because even an hour or two of near freezing temps could be several inches of snow. Forecast models do show 925 and 950 mb temps falling back towards 0C over a large chunk of Wrn ME. This suggests that much of that area could see some snowfall. The best combination of forcing . temps . and QPF will be over the Wrn ME mtns and foothills . possibly even spilling into parts of Kennebec County. Guidance is showing an excellent signal for banded precip on the NW side of the developing low. Significant snowfall is possible in the mtns . and 6 inches or more thru the foothills. Another complicating factor will be late season injection of higher theta-e air . and dry slot racing Nwd. This will be a system will plenty of convection . and that includes most of the local area whether it is snowing or not. Convectively enhanced snowfall rates add additional uncertainty to snowfall forecast.

I have decided to expand the watch into Nrn Coos County at this time . as enough snowfall occurs at valley location to justify a 50 percent risk of 6 inches or more.

LONG TERM /FRIDAY THROUGH TUESDAY/. Overview: Rain and snow showers linger and gusty northwest winds develop on Friday as low pressure moves off to the northeast. Northwest flow dominates over the first half of the weekend and high pressure briefly nudges into the region on Sunday. The beginning of next week currently looks wet and unsettled as a large low pressure system develops over the Midwest and slowly moves northeast.

Impacts: Winds gusting to 30-40 mph Friday afternoon in parts of central and southern NH.

Forecast Details: Light rain or snow showers continue on Friday as a low pressure system quickly moves away to the northeast. Northwest winds will pick up as the morning progresses, and that direction is ideal for downsloping which could enhance the winds. Have gusts to 30-40 mph for much of east central and southern NH Friday afternoon and evening and it is possible that gusts above 40 mph will occur. A wind advisory may be needed for those areas, but will let that decision be made by future shifts. The northwest winds continue through Saturday but should be weaker and much less gusty; Saturday otherwise looks dry though clouds will linger most of the day. High temperatures on Friday and Saturday will range from the mid 30s to the upper 40s.

High pressure nudges into New England early Saturday night and warm southerly flow begins to develop over our region. Sunday looks dry for our region at the moment with warmer temperatures than previous days, but developing low pressure over the Midwest looks to bring another round of precipitation to our region for the early part of next week. This system will slowly move north through the rest of the long term period with secondary lows developing and move northeast toward New England simultaneously. The global deterministic models are not in great agreement, but the general consensus amongst their latest runs is for rain on Monday that begins to diminish on Tuesday.

AVIATION /15Z WEDNESDAY THROUGH SUNDAY/. Short Term . Small area of IFR CIGs has developed on the Midcoast is weak onshore flow N of the warm front. This will dissipate this morning with VFR conditions expected into Thu. Strong coastal storm will develop quickly Thu . with heavy precip . LLWS . and widespread IFR conditions. Precip will move in from the SW first half of Thu and quickly overspread to the NE. Best chance for some SN will be HIE and AUG with several hours of LIFR possible. LLWS will be most likely near the coast in the afternoon just ahead of the low center. Conditions will be slow to improve Thu night.

Long Term . Gusty northwest winds and lingering rain/snow showers on Friday. Winds remain out of the northwest on Saturday but will be weaker and less gusty. VFR conditions expected Saturday and Sunday with a return to MVFR/IFR conditions early next week in rain.

MARINE. Short Term . Quiet over the waters today . but conditions will be deteriorating quickly into Thu. Gale watch remains in effect for rapidly developing coastal storm. At this time gale force wind gusts look fairly likely . but depending on exact low location there is a low chance of some storm force gusts over parts of the waters. This would be most likely N of Port Clyde.

Long Term . Seas will begin to diminish on Friday as the coastal storm pulls away to the northeast though winds will be gusty out of the northwest. A gale watch is up through Friday afternoon and SCA conditions will likely continue through Friday night. Seas pick up again early next week as southerly flow develops over the waters.

HYDROLOGY. A period of heavy rain is likely along the Maine coast Thursday evening . transitioning to snow over the interior. Given snow in the mountains and a mix into the foothills . do not expect significant river flood issues. May have some short-fused issues along the coast especially with water levels rising towards the ~1AM Friday high tide which may prevent efficient surface water drainage along the coast.

TIDES/COASTAL FLOODING. An extended coastal flood advisory is in effect for high tides continuing through early Friday. Astronomical tides are near minor flood levels without wind impacts already . and with surge levels expected to increase ahead of Thursday's storm . minor impacts are likely. There is some potential that the Thursday night high tide could see moderate /warning level/ impacts depending on exact timing/location of storm development and how long winds remain onshore. Forecast surge values remain around 2 ft at maximum . and this lines up well with the current products.

EQUIPMENT. The last GYX upper air observation was March 25 at 12Z. Unfortunately, a disruption in gas supply has temporarily halted observations from GYX. The order has been placed but a date of delivery remains TBD.

The Sugarloaf NWR transmitter remains off the air with an unknown restoration time.

GYX WATCHES/WARNINGS/ADVISORIES. ME . Coastal Flood Advisory until 3 AM EDT Friday for MEZ023>028. Winter Storm Watch from Thursday morning through Friday afternoon for MEZ007>009-012>014. NH . Coastal Flood Advisory until 3 AM EDT Friday for NHZ014. Winter Storm Watch from Thursday morning through Friday afternoon for NHZ001. MARINE . Gale Watch from Thursday afternoon through Friday afternoon for ANZ150>154.

NEAR TERM . Hanes SHORT TERM . Legro LONG TERM . Watson


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44032 - Buoy E0104 - Central Maine Shelf 11 mi131 min NE 14 G 18 39°F 41°F2 ft1000.3 hPa
44033 - Buoy F0103 - West Penobscot Bay 20 mi131 min NNE 14 G 16 38°F 40°F1 ft1000.9 hPa

Wind History for Bar Harbor, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Rockland, Knox County Regional Airport, ME17 mi79 minNE 10 G 1510.00 miFair43°F32°F65%1002.4 hPa
Wiscasset Airport, ME23 mi82 minENE 810.00 miFair46°F33°F61%1002.4 hPa

Link to 5 minute data for KRKD

Wind History from RKD (wind in knots)
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S8S11S10S4CalmCalmNE4NE4NE4E4E5NE3N3NE7NE5NE6NE8NE8NE10
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W5W4W3W3CalmW3CalmW4NW5CalmCalmNW336----
2 days agoS8S7S10S8S10S10S7S5S6S5S6SW8SW7W8W8W5NW4CalmW4N44NW9NW9
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Tide / Current Tables for Burnt Island, Georges Islands, Maine
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Burnt Island
Click for Map
Wed -- 05:32 AM EDT     -1.64 feet Low Tide
Wed -- 06:05 AM EDT     Sunrise
Wed -- 06:43 AM EDT     Moonset
Wed -- 11:46 AM EDT     11.01 feet High Tide
Wed -- 05:55 PM EDT     -1.42 feet Low Tide
Wed -- 07:13 PM EDT     Sunset
Wed -- 08:06 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.796.230.2-1.4-1.5-02.75.98.810.6119.97.64.41.4-0.8-1.4-0.51.84.98.110.4

Tide / Current Tables for Sheepscot River (off Barter Island), Maine Current
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Sheepscot River (off Barter Island)
Click for Map
Wed -- 12:38 AM EDT     -0.00 knots Slack
Wed -- 03:35 AM EDT     -1.49 knots Max Ebb
Wed -- 06:06 AM EDT     Sunrise
Wed -- 06:45 AM EDT     Moonset
Wed -- 07:04 AM EDT     0.00 knots Slack
Wed -- 09:14 AM EDT     1.17 knots Max Flood
Wed -- 12:58 PM EDT     -0.00 knots Slack
Wed -- 03:56 PM EDT     -1.51 knots Max Ebb
Wed -- 07:14 PM EDT     Sunset
Wed -- 07:25 PM EDT     0.00 knots Slack
Wed -- 08:08 PM EDT     Moonrise
Wed -- 09:39 PM EDT     1.26 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.3-0.2-1-1.4-1.5-1.2-0.8-0.10.71.21.10.80.5-0-0.7-1.3-1.5-1.4-1-0.30.51.11.21

Weather Map
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wmap_A
GEOS Local Image of Northeast    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.
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Wind Forecast for Gray/Portland, ME (11,2,3,4)
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Ground Weather Radar Station Portland, ME
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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 numerous 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.