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Marine Weather and Tides
Version 3.4 |
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 5:41AM | Sunset 7:35PM | Tuesday August 20, 2019 10:55 PM EDT (02:55 UTC) | Moonrise 10:09PM | Moonset 10:29AM | Illumination 71% |  |
ANZ151 Penobscot Bay- 902 Pm Edt Tue Aug 20 2019
Rest of tonight..S winds around 5 kt. Seas 1 foot or less.
Wed..S winds 5 to 10 kt. Seas 1 foot or less. A chance of showers in the afternoon.
Wed night..S winds 5 to 15 kt, becoming 10 to 15 kt after midnight. Seas 1 foot or less. Showers with tstms likely in the evening, then a chance of showers after midnight. Areas of fog. Vsby 1 to 3 nm, decreasing to variable to less than one quarter nm after midnight.
Thu..SW winds 10 to 15 kt. Seas around 2 ft. A chance of showers in the morning. Areas of fog in the morning. Vsby variable to less than one quarter nm in the morning.
Thu night..W winds 5 to 10 kt. Seas 1 to 2 ft in the evening, then 1 foot or less.
Fri..W winds around 5 kt, increasing to around 10 kt in the afternoon. Seas 1 foot or less.
Fri night..NW winds 5 to 10 kt. Seas 1 foot or less.
Sat..N winds 5 to 10 kt. Seas 1 foot or less.
Sat night..N winds around 5 kt. Seas 1 foot or less.
Sun..E winds 5 to 10 kt. Seas 1 foot or less.
Sun night..E winds around 5 kt. Seas 1 foot or less. Winds and seas higher in and near tstms.
Rest of tonight..S winds around 5 kt. Seas 1 foot or less.
Wed..S winds 5 to 10 kt. Seas 1 foot or less. A chance of showers in the afternoon.
Wed night..S winds 5 to 15 kt, becoming 10 to 15 kt after midnight. Seas 1 foot or less. Showers with tstms likely in the evening, then a chance of showers after midnight. Areas of fog. Vsby 1 to 3 nm, decreasing to variable to less than one quarter nm after midnight.
Thu..SW winds 10 to 15 kt. Seas around 2 ft. A chance of showers in the morning. Areas of fog in the morning. Vsby variable to less than one quarter nm in the morning.
Thu night..W winds 5 to 10 kt. Seas 1 to 2 ft in the evening, then 1 foot or less.
Fri..W winds around 5 kt, increasing to around 10 kt in the afternoon. Seas 1 foot or less.
Fri night..NW winds 5 to 10 kt. Seas 1 foot or less.
Sat..N winds 5 to 10 kt. Seas 1 foot or less.
Sat night..N winds around 5 kt. Seas 1 foot or less.
Sun..E winds 5 to 10 kt. Seas 1 foot or less.
Sun night..E winds around 5 kt. Seas 1 foot or less. Winds and seas higher in and near tstms.
ANZ100 902 Pm Edt Tue Aug 20 2019
Synopsis for stonington me to merrimack river ma out to 25 nm.. High pressure will remain nearby tonight as a warm front gradually moves toward the waters from the southwest. This warm front will move over the local waters on Wednesday along with a good chance of showers and Thunderstorms. A cold front moves across the waters Thursday morning with high pressure and fair weather moving in for Friday and the weekend. &&
Synopsis for stonington me to merrimack river ma out to 25 nm.. High pressure will remain nearby tonight as a warm front gradually moves toward the waters from the southwest. This warm front will move over the local waters on Wednesday along with a good chance of showers and Thunderstorms. A cold front moves across the waters Thursday morning with high pressure and fair weather moving in for Friday and the weekend. &&
7 Day Forecast for Marine Location Near Belfast, ME
Hourly EDIT Helplocation: 44.42, -69.01 debug
Area Discussion for - Gray/Portland, ME
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kgyx 210116 aab afdgyx area forecast discussion... Updated national weather service gray me 916 pm edt Tue aug 20 2019 Synopsis A warm front will approach from the southwest late tonight and slowly move northward on Wednesday. Showers and thunderstorms will become increasingly likely during the day on Wednesday. A few severe storms will be possible during the afternoon and early evening. A cold front will sweep across the region Thursday morning allowing for cooler and drier air to move into northern new england. High pressure will build in over the weekend and into Monday allowing for fair weather. Near term until 6 am Wednesday morning 915 pm update... a nice night is in progress with mostly clear skies and light winds, allowing temperatures to drop. Adjusted temperatures and dew points slightly for this update. 610 pm update... no significant changes are needed to the forecast for the evening and overnight hours. The sea breeze in maine has made it to near a limington, casco, lewiston to alna line and has allowed cooler air to penetrate inland. In nh it has reached central rockingham and strafford counties. Much of the area still has dew points in the 40s and 50s, and while these will increase slowly overnight, temperatures will drop into the 50s and 60s with decent radiational cooling effects expected. Temperatures as well as winds were adjusted for current trends. Previous discussion... a beautiful, sunny afternoon will give way to a clear evening with light winds. Radiational cooling should take place for much of the night which will allow for some cool overnight lows and possibly some valley fog. A warm front will approach from the southwest late tonight with some increasing clouds across southern zones toward dawn and perhaps an isolated shower or thunderstorm by 12z. Short term 6 am Wednesday morning through Wednesday night A short wave trough will approach from the west on Wednesday as a sfc warm front sharpens up over southern new england and gradually moves northward. This setup will allow for the return of much higher dewpoints during the day, especially across southern zones. The entire forecast area is in a slight risk for severe thunderstorms on Wednesday as the short wave trough moves eastward and yields increasing forcing for ascent as the day progresses. Showers and thunderstorms are a very good bet. However, there are complicating factors for severe thunderstorms. First, the morning and early afternoon warm air advection will spread clouds and elevated showers and some non-severe thunderstorms across portions of the region. This would limit instability if they are widespread enough. There are significant differences in solutions with regard to that at this time. In addition, there is also a considerable spread in solutions with respect to the degree of onshore flow on the coastal plain. A cooler solution on the coastal plain such as what the 3 km NAM projects would limit potential significantly on the coastal plain. A close inspection of several cams as well as ensembles such as the SPC href and SPC sref reveals somewhat of a consensus in that the best chances for severe weather will be over southern new hampshire and southernmost me. This is where the highest moisture content will be and likely the best sfc convergence in the vicinity of a warm front. At this time, placed enhanced tstm wording along and south of a line roughly from kleb to kpwm. However, this is a fluid situation with a few moving parts so the main target area could change some. Cams show varying modes of thunderstorms - mainly line segments with damaging wind potential. But several show mixed modes as |
well with multicells and a few supercells possible. This makes sense with gradually increasing deep layer shear as the afternoon progresses. Damaging straight line winds will be the main threat, but one or two tornadoes cannot be ruled out, especially near the warm front across southernmost zones. Again, the greatest threat for severe weather appears to be near and south of a kleb-kpwm line but cannot be ruled out north of there if sufficient instability builds. Thunderstorms move offshore early Wednesday evening allowing for a relatively quiet night. However, with actual cold front still to the west we cannot rule out a few showers and thunderstorms overnight. Long term Thursday through Tuesday Longwave pattern across the northern hemisphere shows a typical late summer pattern of engorged subtropical ridges and a series of troughs and ridges in the northward shifted jet stream. One of the more substantial troughs will be over southeast canada on Thursday driving a series of cold fronts through our area. The first will have departed offshore with the thunderstorms Wednesday evening, but another moves through on Thursday with the cooler air not arriving until Thursday night. Thus expect another warm day Thursday with a slight chance of a shower or storm as the next boundary moves through during the afternoon. If a storm were to form, the wind shear available would favor supercell formation, but the amount of instability available is a bit iffy considering dry advection. But if enough instability develops ahead of the boundary we could have some storms to deal with. The cooler and drier air finally moves in in force Thursday night with high pressure over the great lakes building east through the weekend. This will set up a period of mild weather and mostly sunny conditions. The only exception could be Friday as the upper trough moves nearby, possibly close enough to generate some afternoon showers mainly in the northeast part of the area. While upper level ridging builds over quebec and new england, the warm air streaming into this recently fattening ridge is rather limited so expect temperatures near normal even as the surface high builds eastward early next week. The next trough moves into the great lakes on Monday though it's a bit uncertain how quickly it moves east and begins affecting our area midweek. Aviation 01z Wednesday through Sunday Short term...VFR tonight with some valley fog possible in the interior. Showers and thunderstorms become increasingly likely by mid to late morning Wednesday, with highest chances between between 19z and 00z. Thereafter, low clouds and fog may form, especially in valleys and along the coast. Long term... Aside from a stray shower or storm Thursday afternoon, expect mostlyVFR conditions through the weekend. Some early morning fog is also possible each morning in the interior valleys. Marine Short term... Conditions are likely to remain below sca thresholds tonight through Wednesday night. However, thunderstorms could make for locally rough conditions late Wednesday afternoon and evening. Long term... A series of cold fronts moves across the gulf of maine Thursday and Thursday night with winds becoming light west to northwest through the weekend as high pressure builds in. Gyx watches warnings advisories Me... None. Nh... None. Marine... None. Near term... Hanes short term... Ekster long term... Kimble |
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 | 112 min | WSW 3.9 G 3.9 | 65°F | 64°F | 1 ft | 1016.7 hPa | |
| ATGM1 - 8413320 - Bar Harbor, ME | 43 mi | 62 min | S 2.9 G 4.1 | 69°F | 61°F | 1016.8 hPa | ||
| MISM1 - Matinicus Rock, ME | 45 mi | 66 min | 64°F | 1017 hPa (+0.5) | 61°F |
Wind History for Bar Harbor, ME
(wind in knots) EDIT (on/off) Help| 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 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 | |
| Last 24hr | NW | SE | NW | N | -- | NW | NW | NW | NW | N | N | N | N | N G6 | NE G7 | NE G7 | E | N | S | NW | W | W G7 | W G10 | S |
| 1 day ago | E | S | S | S | S | S | SE | S | S | S G9 | SE G8 | SE | NE | S | S | SE | SE G8 | S G10 | SE G10 | S G6 | SE | SE | E | NW |
| 2 days ago | SE | SE | SE | SE | S G11 | S G11 | SE | -- | NW G4 | NW | S | S | S | S G6 | S | S | S | S | S | S G12 | S G8 | S | S | SE |
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 |
| Rockland, Knox County Regional Airport, ME | 24 mi | 60 min | N 0 | 10.00 mi | Fair | 61°F | 57°F | 90% | 1017.2 hPa |
Link to 5 minute data for KRKD
Wind History from RKD (wind in knots)
| 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 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 | |
| Last 24hr | W | W | Calm | NW | Calm | SE | S | S | S | S | SW | Calm | W | Calm | ||||||||||
| 1 day ago | Calm | E | E | NE | NE | E | SE | Calm | S | S | SW | Calm | S | S | Calm | |||||||||
| 2 days ago | SE | SE | SE | Calm | Calm | NW | Calm | NE | Calm | NE | E | S | S | SE | S | S | Calm | Calm | Calm |
Tide / Current Tables for Belfast, Penobscot River, Maine
EDIT Weekend mode (on/off) (on/off) Help One Week of DataBelfast
Click for Map
Tue -- 02:29 AM EDT 10.28 feet High Tide
Tue -- 05:44 AM EDT Sunrise
Tue -- 08:39 AM EDT 0.79 feet Low Tide
Tue -- 10:29 AM EDT Moonset
Tue -- 02:52 PM EDT 10.10 feet High Tide
Tue -- 07:33 PM EDT Sunset
Tue -- 08:59 PM EDT 1.09 feet Low Tide
Tue -- 10:09 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 02:29 AM EDT 10.28 feet High Tide
Tue -- 05:44 AM EDT Sunrise
Tue -- 08:39 AM EDT 0.79 feet Low Tide
Tue -- 10:29 AM EDT Moonset
Tue -- 02:52 PM EDT 10.10 feet High Tide
Tue -- 07:33 PM EDT Sunset
Tue -- 08:59 PM EDT 1.09 feet Low Tide
Tue -- 10:09 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
| 12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 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 |
| 7 | 9 | 10.1 | 10.1 | 9.1 | 7.1 | 4.7 | 2.4 | 1 | 0.9 | 1.8 | 3.6 | 5.9 | 8.2 | 9.7 | 10.1 | 9.4 | 7.9 | 5.6 | 3.3 | 1.7 | 1.1 | 1.6 | 3.1 |
Tide / Current Tables for Castine, Penobscot Bay, Maine
EDIT (on/off) Help One Week of DataCastine
Click for Map
Tue -- 02:32 AM EDT 10.19 feet High Tide
Tue -- 05:43 AM EDT Sunrise
Tue -- 08:40 AM EDT 0.80 feet Low Tide
Tue -- 10:28 AM EDT Moonset
Tue -- 02:55 PM EDT 10.01 feet High Tide
Tue -- 07:32 PM EDT Sunset
Tue -- 09:00 PM EDT 1.11 feet Low Tide
Tue -- 10:08 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 02:32 AM EDT 10.19 feet High Tide
Tue -- 05:43 AM EDT Sunrise
Tue -- 08:40 AM EDT 0.80 feet Low Tide
Tue -- 10:28 AM EDT Moonset
Tue -- 02:55 PM EDT 10.01 feet High Tide
Tue -- 07:32 PM EDT Sunset
Tue -- 09:00 PM EDT 1.11 feet Low Tide
Tue -- 10:08 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
| 12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 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 |
| 6.8 | 8.9 | 10 | 10.1 | 9.1 | 7.2 | 4.7 | 2.5 | 1.1 | 0.9 | 1.7 | 3.5 | 5.8 | 8 | 9.5 | 10 | 9.4 | 7.9 | 5.7 | 3.4 | 1.7 | 1.1 | 1.6 | 3.1 |
Weather Map and Satellite Images
(on/off) HelpWeather Map
GOES 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 (22,6,7,8)
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Ground Weather Radar Station Portland, ME
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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. |