Monday, August20, 2018 L-36.com


Marine Weather and Tides
Topsham, ME

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Sunrise 5:49AMSunset 7:36PM Monday August 20, 2018 11:04 AM EDT (15:04 UTC) Moonrise 3:49PMMoonset 12:38AM Illumination 67% Phase: Waxing Gibbous; Moon at 9 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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ANZ153 Casco Bay- 902 Am Edt Mon Aug 20 2018
Rest of today..NE winds 5 to 10 kt, becoming se this afternoon. Seas 1 foot or less, then 1 to 2 ft this afternoon.
Tonight..SE winds around 5 kt, becoming ne after midnight. Seas 1 to 2 ft.
Tue..NE winds around 5 kt, becoming se around 5 kt in the afternoon. Seas 1 to 2 ft.
Tue night..SE winds 5 to 10 kt. Seas 1 to 2 ft. A chance of showers in the evening, then showers likely after midnight.
Wed..S winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Showers with tstms likely. Vsby 1 to 3 nm.
Wed night..W winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers in the evening.
Thu..W winds 5 to 10 kt. Seas 2 to 3 ft.
Thu night..W winds around 5 kt. Seas around 2 ft.
Fri..SW winds around 5 kt. Seas 1 to 2 ft.
Fri night..SW winds 5 to 10 kt. Seas 1 to 2 ft. Winds and seas higher in and near tstms.
ANZ100 902 Am Edt Mon Aug 20 2018
Synopsis for stonington me to merrimack river ma out to 25 nm.. High pressure slowly slips through northern new england and into the gulf of maine and nova scotia by Tuesday. A cold front will move through from the west on Wednesday. High pressure builds in from the west behind the front through the weekend.


7 Day Forecast for Marine Location Near Topsham, ME
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location: 43.92, -69.96     debug


Area Discussion for - Gray/Portland, ME
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Fxus61 kgyx 201302
afdgyx
area forecast discussion
national weather service gray me
902 am edt Mon aug 20 2018

Synopsis
A ridge of high pressure will remain draped across the area
today before gradually retreating into the canadian maritimes
on Tuesday. An upper level trough will move east into the region
around midweek, bringing a chance of showers and thunderstorms
Tuesday night and Wednesday before a cold front moves through.

This cold front will usher cooler and drier air into the region
through the weekend.

Near term until 8 pm this evening
900 am... For this estf update I made minor adjustments to
reflect current satellite low cloud trends and the mesonet in
near term grids.

Prev disc...

630am update...

made only minor adjustments to hourly temperature and dewpoint
trends based on latest observations.

Original discussion...

weak mid level low has kept mostly cloudy skies across the area
overnight, and this will slowly move to the northeast today.

This should eventually bring a bit more sunshine by days end.

The temperature should warm into the 70s for most of the area,
with northern areas making a run at 80 degrees.

Short term 8 pm this evening through 6 pm Tuesday
Surface ridge of high pressure remains over the coastal plain
tonight bringing calm conditions. This should allow for decent
radiational cooling conditions and some fog developing
especially in valley locations. Temperatures mainly drop into
the 50s, but some 40s are possible in the more sheltered spots.

A more southerly flow begins on Tuesday as high pressure pulls
off to the northeast. This will again keep temperatures cool and
may bring in a bit more cloud cover and higher dewpoints.

Long term Tuesday night through Sunday
An upper trof will approach from the great lakes Tue night
spreading clouds and showers into the region. Models in good
agreement on timing. Widespread showers and scattered
thunderstorms expected Wed as the trof moves across the area.

Enough dynamics in place Wed to introduce the possibility of
some strong storms as well. RFC guidance brings QPF amounts of

25- 50 inches with this system. The models are in good
agreement allowing the trof to remain progressive and exit by
wed night allowing a trailing cold front to move across the
region followed by clearing late Wed night and thu. Temps will
be cooler and drier Thu and near seasonal temps expected fri
and into the weekend.

Aviation 13z Monday through Friday
Short term... Valley fog likely tonight at whitefield and
lebanon. It is also possible at concord and in the coastal plain
as well. This should dissipate not long after the Sun comes up.

Long term... Conditions lowering to ifr Tue night and through wed
in showers and scattered tstorms. Conditions improve toVFR
behind a cold frontal passage Wed night and thu.

Marine
Short term... High pressure slowly moves across the gulf of maine
through Tuesday, keeping wind speeds low and wave heights well
below advisory levels.

Long term... Winds and seas will remain below SCA conditions.

Gyx watches warnings advisories
Me... None.

Nh... None.

Marine... None.

Es


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CASM1 - 8418150 - Portland, ME 24 mi40 min 70°F 64°F1023 hPa
44007 - PORTLAND 12 NM Southeast of Portland,ME 29 mi74 min NE 5.8 G 7.8 64°F 64°F2 ft1022.6 hPa (+0.7)61°F
44032 - Buoy E0104 - Central Maine Shelf 35 mi60 min NE 7.8 G 9.7 62°F 61°F2 ft1021.7 hPa

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wiscasset Airport, ME14 mi71 minVar 310.00 miFair70°F61°F73%1023.5 hPa
Auburn-Lewiston, ME20 mi68 minNNE 410.00 mi68°F60°F76%1024.9 hPa

Wind History from IWI (wind in knots)
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Last 24hr6NE6E9
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6N5--E4E3SE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalm3443Calm
1 day ago64Calm44344CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm3465
2 days ago4S5S765S6S6SE3CalmSW3CalmSE4CalmCalm3CalmSW4SW5SW5SW5SW4SW3SW35

Tide / Current Tables for Brunswick, Androscoggin River, Kennebec River, Maine
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Brunswick
Click for Map
Mon -- 12:38 AM EDT     Moonset
Mon -- 05:49 AM EDT     Sunrise
Mon -- 05:50 AM EDT     0.35 feet Low Tide
Mon -- 10:02 AM EDT     3.49 feet High Tide
Mon -- 03:48 PM EDT     Moonrise
Mon -- 06:02 PM EDT     0.60 feet Low Tide
Mon -- 07:36 PM EDT     Sunset
Mon -- 10:20 PM EDT     3.86 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.12.51.81.20.70.40.412.13.13.53.43.12.621.510.70.612.13.23.83.8

Tide / Current Tables for Upper Hell Gate (Sasanoa River, Maine) Current
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Upper Hell Gate (Sasanoa River
Click for Map
Mon -- 12:37 AM EDT     Moonset
Mon -- 01:11 AM EDT     -0.68 knots Max Ebb
Mon -- 05:14 AM EDT     0.00 knots Slack
Mon -- 05:48 AM EDT     Sunrise
Mon -- 09:35 AM EDT     0.73 knots Max Flood
Mon -- 11:43 AM EDT     -0.00 knots Slack
Mon -- 01:31 PM EDT     -0.59 knots Max Ebb
Mon -- 03:47 PM EDT     Moonrise
Mon -- 05:21 PM EDT     0.00 knots Slack
Mon -- 07:35 PM EDT     Sunset
Mon -- 09:55 PM EDT     0.81 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.4-0.7-0.6-0.5-0.4-0.10.30.60.70.70.70.4-0.2-0.5-0.6-0.4-0.4-0.10.30.60.80.80.80.6

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Gray/Portland, ME (11,2,3,4)
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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.