Wednesday, September19, 2018 L-36.com


Marine Weather and Tides
Rockland, ME

Version 3.4
What's New / NOTES
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 6:22AMSunset 6:42PM Wednesday September 19, 2018 4:36 PM EDT (20:36 UTC) Moonrise 4:05PMMoonset 12:46AM Illumination 74% Phase: Waxing Gibbous; Moon at 10 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- 312 Pm Edt Wed Sep 19 2018
Tonight..NE winds 5 to 15 kt, becoming 10 to 15 kt after midnight. Seas 1 foot or less.
Thu..NE winds 5 to 15 kt with gusts up to 20 kt, becoming se around 5 kt in the afternoon. Seas 1 foot or less.
Thu night..S winds around 5 kt. Seas 1 foot or less.
Fri..SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 30 kt in the afternoon. Seas 1 foot or less, then 2 to 3 ft in the afternoon. Scattered showers.
Fri night..SW winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to 4 ft. A chance of showers in the evening, then showers likely with a chance of tstms after midnight.
Sat..NW winds 10 to 15 kt with gusts up to 30 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 4 ft, subsiding to 1 to 2 ft in the afternoon. A chance of showers in the morning.
Sat night..N winds around 5 kt. Seas 1 foot or less.
Sun..W winds around 5 kt. Seas 1 foot or less.
Sun night..N winds 5 to 10 kt with gusts up to 20 kt. Seas 1 foot or less.
Mon..E winds 5 to 10 kt. Seas 1 foot or less.
Mon night..E winds 5 to 10 kt. Seas 1 foot or less. Winds and seas higher in and near tstms.
ANZ100 312 Pm Edt Wed Sep 19 2018
Synopsis for stonington me to merrimack river ma out to 25 nm.. A north to northeast flow is expected today with high pressure sliding eastward across the gulf of saint lawrence. Winds turn onshore again Thursday into Friday, with the next cold front arriving from the northwest Friday night. High pressure builds across the waters over 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 191910
afdgyx
area forecast discussion
national weather service gray me
310 pm edt Wed sep 19 2018

Synopsis
High pressure will build in from the northeast tonight and will
hold over the region on Thursday. A warm front will lift north
to the west of the forecast area Thursday night and Friday. A
cold front will cross the region Friday night followed by high
pressure on Saturday. A secondary cold front will push south
through the region Sunday. High pressure will build over the
region Sunday night and Monday.

Near term through tonight
Moist flow off the maritimes will continue overnight as high
pressure builds in from the northeast. Sharp temp inversion
around 2500 ft will keep low clouds across much of the region
into Thursday morning. Any areas in the connecticut valley which
scatter out will likely see fog developing after midnight. Lows
overnight will range from the mid 40s north to the mid 50s
south.

Short term Thursday through Thursday night
Low level moisture will linger over the region on Thursday but
expect sunny breaks to develop during the morning and early
afternoon throughout the forecast area. High temps will average
out below normal with highs in the lower to mid 60s.

A warm front lifting by to the northwest of the region Thursday
night will bring increasing high and mid level clouds into the
region and may scrape northern zones with a few showers after
midnight. Lows will range from the mid 40s north to the mid 50s
south.

Long term Friday through Wednesday
Global models are in reasonably good agreement through the
period. A warm front will lift north early on Friday. Looks
like best moisture and lift will be from central nh over to
the maine foot hills and mountains. Therefore the best chance
of morning showers will be over these areas. Friday afternoon a
tightening SW gradient should result in breezy and mild
conditions.

Friday night a sharp cold front will sweep through the region.

Expect frontal passage around 4 utc over the mountains and
around 9 utc along the coastline. Strong wind dynamics are
associated with this front but as previously discussed the
timing of the the event means that much of the daytime heating
and instability will not be present. Still can't rule out some
stronger wind gusts with the FROPA (frontal passage) and any
associated convection. Have used the gyx peak wind gust tool
from 21 utc Friday through 15 utc Saturday. This yields wind
gusts in the 40 to 50 mph range over high terrain with gusts
over 90 mph over the higher peaks of the white mountains. Over
the lower terrain the gusts lower significantly peaking in the
20 to 30 mph range. If subsequent guidance increases winds
speeds we may need to consider wind headlines... Since it is in
the 48 to 60 hour range there is time to evaluate this.

Post frontal, a large cool canadian high pressure system will
start to build south. Initially we will be in a cool NW flow of
air ahead of the high. There will be a trough secondary shot of
cool air crossing ahead of the high Saturday night. The high
will build over the area late Sunday and Monday. The high will
push east of the region Tuesday allowing for moderating
temperatures as a SW flow develops. Another warm front-cold
front couplet will return the threat of showers late Tuesday and
Wednesday.

Aviation 18z Wednesday through Monday
Short term... Widespread MVFR ifr ceilings tonight with areas of
lifr in patchy fog after midnight. BecomingVFR on Thursday and
Thursday night.

Long term...VFR to MVFR south of the mountains Friday... Areas of
ifr in showers Friday morning over the mountains. A cold front
will cross the region Friday night with showers and
thunderstorms resulting in areas of ifr to lifr in any
thunderstorms. High pressure will returnVFR to MVFR conditions
Saturday through Monday. The only exception would be over the
mountains where MVFR to ifr conditions are possible Saturday
morning.

Marine
Short term... Northeasterly flow will continue tonight into
Thursday but winds will remain below SCA levels.

Long term... Winds and waves heights will likely reach SCA levels
Friday afternoon through Friday night and into early Saturday as
a strong cold front approaches and crosses the waters. Another
round of SCA winds and waves are possible Tuesday into
Wednesday.

Gyx watches warnings advisories
Me... None.

Nh... None.

Marine... None.

Synopsis...

near term... Sinsabaugh
short term... Sinsabaugh
long term... Lulofs


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44033 - Buoy F0103 - West Penobscot Bay 6 mi93 min NNE 7.8 G 12 57°F 60°F2 ft1015.1 hPa
MISM1 - Matinicus Rock, ME 25 mi37 min N 7 G 9.9 57°F 1015.5 hPa (+0.0)
44032 - Buoy E0104 - Central Maine Shelf 30 mi93 min NNE 14 G 16 59°F 59°F3 ft1014.6 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 mi41 minVar 510.00 miOvercast61°F54°F78%1016.2 hPa

Wind History from RKD (wind in knots)
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Last 24hrE4CalmS5SW4SW43NE10
G17
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G15
N7N76--666N7NE8
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NE76N7NE94NE95
1 day agoS6SW6SW7SW10SW8SW7SW6SW6SW7W6W7SW7SW7W10W6SW7SW10SW7CalmSE6E6Calm4Calm
2 days agoS3CalmCalmE3CalmCalmCalm--CalmCalmSW3SW5SW4SW4SW4SW7SW8S7S7S7S8SW9S8SW9

Tide / Current Tables for Rockland, Penobscot River, Maine
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Camden, Penobscot River, Maine
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map and Satellite Images
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wmap_A
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.
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Wind Forecast for Gray/Portland, ME (16,3,4,5)
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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.