Friday, July10, 2020
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Marine Weather and Tides
Rockland, 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 5:03AMSunset 8:25PM Friday July 10, 2020 1:43 AM EDT (05:43 UTC) Moonrise 11:45PMMoonset 10:31AM Illumination 77% Phase: Waning Gibbous; Moon at 19 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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ANZ151 Penobscot Bay- 1134 Pm Edt Thu Jul 9 2020
Rest of tonight..SE winds around 5 kt. Seas 1 foot or less, then 1 to 2 ft. Areas of dense fog. Vsby variable to less than one quarter nm.
Fri..SE winds around 5 kt. Seas 1 foot or less. Patchy fog in the morning with vsby 1 to 3 nm.
Fri night..SE winds 5 to 10 kt. Seas 1 to 2 ft. A chance of showers in the evening, then showers likely after midnight with vsby 1 to 3 nm.
Sat..SE winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Showers likely. Vsby 1 to 3 nm in the morning.
Sat night..SE winds 5 to 10 kt, becoming sw after midnight. Seas 2 to 3 ft. Showers likely, mainly in the evening.
Sun..SW winds 5 to 10 kt. Seas 2 to 3 ft.
Sun night..SW winds 5 to 10 kt. Seas 2 to 3 ft.
Mon..SW winds around 5 kt. Seas 2 to 3 ft.
Mon night..S winds around 5 kt. Seas 2 to 3 ft. A chance of showers.
Tue..SE winds up to 10 kt. Seas 2 to 3 ft. A chance of showers.
Tue night..SE winds 5 to 10 kt. Seas 1 to 2 ft. A chance of showers.
ANZ100 1134 Pm Edt Thu Jul 9 2020
Synopsis for stonington me to merrimack river ma out to 25 nm.. Fog is again expected to form over the waters tonight through morning. A coastal system will approach the region late Friday spreading rain showers into the region by Friday night and heavy rain on Friday night and Saturday. This storm will bring seas above 5 ft for the outer waters with gusts to 25kts likely through the weekend. &&


7 Day Forecast for Marine Location Near Rockland, ME
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location: 44.1, -69.09     debug


Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 100335 AFDGYX

Area Forecast Discussion National Weather Service Gray ME 1135 PM EDT Thu Jul 9 2020

SYNOPSIS. Hot and humid conditions are forecast again for Friday, with isolated showers and storms. Widespread moderate to possibly heavy rainfall is expected Friday night and through Saturday as a remnant tropical system nears. An upper level trough may bring scattered showers or thunderstorms early next week to the region.

NEAR TERM /UNTIL 6 AM FRIDAY MORNING/. Update . Minor changes to adjust for latest observational trends.

Previous discussion . Hot and sticky afternoon in place across the region as weak high pressure remains generally in control. Across southern New Hampshire dewpoints in the upper 60s with temperatures in the low 90s are pushing the heat index into the upper 90s and the heat advisory remains in effect through this evening.

Overnight expect fog to again form across the region with the muggy airmass remaining in place. Have put dense fog in the more typical valley locations, with more widespread patchy fog. A Dense fog advisory may again be needed but will let the evening shift assess that further after the heat advisory expires.

SHORT TERM /6 AM FRIDAY MORNING THROUGH FRIDAY NIGHT/. Update . NHC has initiated tropical storm warnings for TS Fay . but the most important point is that functionally does not change the forecast locally. The main threat continues to be the potential for heavy rainfall . though a track farther W would limit that potential.

Previous discussion . For tomorrow our focus turns to our south. Pressure falls northeast of Cape Hatteras, along with increasing convection are likely to become a tropical storm this evening. This storm will then track up the coast bringing rain to our region by Friday night. deterministic guidance has shifted west with the track of this low, with some options keeping the low entirely west of our CWA. Feel this is probably a bit to aggressive and have leaned towards a more easterly track which brings the core of the heavy precipitation through our region late Friday night and into Saturday. With a deep tropical moisture feed Flash flooding will be a threat overnight Friday into Saturday especially across the southern part of the area.

LONG TERM /SATURDAY THROUGH THURSDAY/. 12Z models track with tropical moisture continues to shift somewhat from run to run on Saturday. Latest guidance trends shift the bulk of the moisture just west of our region and across westernmost New England or eastern New York State Saturday morning. However, much uncertainty continues as to exactly where this tropical moisture will advect.

The possibility of localized flash flooding continues for Saturday morning, but again, the location or confidence of an axis of heavy rainfall is relatively low at this time. If the system does track west of our region, it does open the possibility of dry intrusion to its east. This may allow for sunshine and increased diurnal destabilization, allowing CAPE values to quickly increase in a highly sheared environment during the day. Therefore, the possibility of damaging winds and locally heavy rainfall will persist through the afternoon hours. This is in good agreement with latest SPC forecast.

Warm conditions and very humid conditions are expected throughout the weekend, but not as hot as the heat index values we have experienced over the last couple days.

Thereafter, a persistent upper level trough will lead to scattered convection to start off next week. This will mostly be diurnally driven.

AVIATION /04Z FRIDAY THROUGH TUESDAY/. Short Term . A few cumulus clouds this afternoon won't impact flight category and will dissipate at sundown. Not long after that expect to see a return to the fog and LIFR conditions seen last night. Less than 1/4SM is expected at HIE and LEB and BML in the northern river valleys. Along the coast will also see LIFR ceilings with fog. The wildcard is the Merrimack Valley. Expect both CON and MHT to drop to at least IFR but may not be quite as dense as the rest of the area. Fog will lift again after sunrise tomorrow and be replaced by increasing high clouds as a system move up the coast. This will bring increasing onshore wind with rain developing from south to north on Friday night.

Long Term . Areas of IFR conditions and possibly LIFR in storms and coastal fog on Saturday. Conditions gradually improve Sunday and into early next week. However, there may be localized and mainly diurnally driven showers and storms during this period lowering ceilings and visibilities from time to time.

MARINE. Short Term . Overnight expect fog to reform across the ocean waters. May see some lifting in the morning but increasing clouds ahead of a coastal low may keep some fog in place all day. Onshore flow and rain showers move in from south to north on Friday evening ahead of the low.

Long Term . Winds and seas may bring the waters to SCA thresholds on Saturday into Sunday. Otherwise, conditions will remain below SCA thresholds.

HYDROLOGY. While flash flooding is possible late Friday night into Saturday, the track of tropical moisture remains highly uncertain and may end up passing to our west. Nevertheless this will need to be closely monitored as flash flooding is a possibility by Saturday morning in a very highly precipitable water and dynamic environment, and perhaps once again Saturday afternoon in association with convection.

GYX WATCHES/WARNINGS/ADVISORIES. ME . Dense Fog Advisory until 9 AM EDT Friday for MEZ019>028. NH . None. MARINE . None.



NEAR TERM . Legro


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44033 - Buoy F0103 - West Penobscot Bay 6 mi99 min ESE 3.9 G 3.9 58°F 2 ft1015.5 hPa
44032 - Buoy E0104 - Central Maine Shelf 30 mi99 min ENE 7.8 G 9.7 61°F 64°F2 ft1015.3 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, ME2 mi47 minN 00.25 miFog63°F63°F100%1017.3 hPa

Link to 5 minute data for KRKD

Wind History from RKD (wind in knots)
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Last 24hrSW5W8CalmCalmNE3CalmNE3CalmE55S5S6S5S7S7S5S5SW4SW4CalmE3E3CalmCalm
1 day agoSW4S3S4S35SW5S7S6SW8S8SW5S7SW5S5S4S5E4N10
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2 days agoCalmCalmCalmCalmCalmCalmCalmSE6S8S6S9S12S11S9S7
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Tide / Current Tables for Rockland, Penobscot River, Maine
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Rockland
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Fri -- 03:15 AM EDT     10.18 feet High Tide
Fri -- 05:03 AM EDT     Sunrise
Fri -- 09:35 AM EDT     0.30 feet Low Tide
Fri -- 10:31 AM EDT     Moonset
Fri -- 03:57 PM EDT     9.35 feet High Tide
Fri -- 08:19 PM EDT     Sunset
Fri -- 09:50 PM EDT     1.49 feet Low Tide
Fri -- 11:44 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.57.99.510.29.98.56.13.61.60.50.41.33.35.87.899.48.87.14.931.81.52.1

Tide / Current Tables for Camden, Penobscot River, Maine
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Camden
Click for Map
Fri -- 03:07 AM EDT     10.03 feet High Tide
Fri -- 05:02 AM EDT     Sunrise
Fri -- 09:33 AM EDT     0.44 feet Low Tide
Fri -- 10:31 AM EDT     Moonset
Fri -- 03:47 PM EDT     9.27 feet High Tide
Fri -- 08:20 PM EDT     Sunset
Fri -- 09:48 PM EDT     1.44 feet Low Tide
Fri -- 11:44 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.57.79.4109.68.26.13.61.70.60.51.63.55.87.799.38.674.931.81.52.1

Weather Map
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wmap_A
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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Gray/Portland, ME (1,6,7,8)
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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.