Thursday, August22, 2019 L-36.com


Marine Weather and Tides
Scar, ME

Version 3.4
NOTICE
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 5:52AMSunset 7:36PM Thursday August 22, 2019 10:04 PM EDT (02:04 UTC) Moonrise 11:10PMMoonset 12:37PM Illumination 50% Phase: Third Quarter Moon; Moon at 22 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- 936 Pm Edt Thu Aug 22 2019
Rest of tonight..W winds 5 to 10 kt. Seas 2 to 3 ft.
Fri..W winds 5 to 10 kt. Seas 1 to 2 ft.
Fri night..NW winds 5 to 10 kt. Seas 1 to 2 ft.
Sat..N winds 5 to 10 kt. Seas 1 to 2 ft in the morning, then 1 foot or less.
Sat night..NE winds 5 to 10 kt. Seas 1 foot or less.
Sun..E winds 5 to 10 kt. Seas 2 to 3 ft.
Sun night..NE winds 5 to 10 kt. Seas 1 to 2 ft.
Mon..NE winds 5 to 10 kt. Seas 1 to 2 ft. A chance of showers.
Mon night..NE winds 5 to 10 kt. Seas around 2 ft.
Tue..E winds 5 to 10 kt. Seas 2 to 3 ft.
Tue night..S winds around 5 kt. Seas 2 to 4 ft. A chance of showers.
ANZ100 936 Pm Edt Thu Aug 22 2019
Synopsis for stonington me to merrimack river ma out to 25 nm.. A cold front will cross the gulf of maine this evening. Fog will linger over the eastern portion of the waters overnight. High pressure will build into the area for the weekend. &&


7 Day Forecast for Marine Location Near Scar, ME
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location: 43.56, -70.28     debug


Area Discussion for - Gray/Portland, ME
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Fxus61 kgyx 230135
afdgyx
area forecast discussion
national weather service gray me
935 pm edt Thu aug 22 2019

Synopsis
High pressure will dominate the weather pattern this weekend for
pleasant weather and comfortable humidity levels. An area of
low pressure off the east coast will track south off CAPE cod
early next week that will likely be too far offshore to impact
the area. A front will approach the area from the west midweek
bringing an increase in temperatures and humidity and a chance
for precipitation.

Near term tonight
930pm update...

front is offshore now with a nice dry air mass moving in.

Temperatures already in the 60s for many areas, though a few
stragglers staying in the 70s particularly the urban area of new
hampshire. Fog is possible by morning in the interior valleys,
but there's some uncertainty on this considering the low level
dry advection.

530pm update...

special 19z gyx sounding showed impressive 1200 SBCAPE and 40kt
shear available this afternoon. However, MLCAPE was only 200, a
result of some dry air just above the ground. This seems to be
what is limiting the intensity of convection today as dry air
mixing into updrafts is reducing the instability. While the
eastward advancing boundary is colliding with the sea breeze
over the midcoast now, aiding in low level convergence and
upward motion, it still has not been enough to produce strong
updrafts. Thus expect the remaining activity over the i-95
corridor northeast of augusta to gradually move southeast and
dissipate over the next couple of hours. Have updated the
forecast with this thinking without much change overall.

Original discussion...

a cold front is moving through the region this afternoon with
scattered showers and thunderstorms. At 19z the leading edge of
the front was just moving into the western mountains with
increasing westerly winds across vermont and decreasing
dewpoints. To the east the coastal plain remained calm, with
dewpoints near 70f. This has resulted in around 1000-1500 j kg
of surface based CAPE across the region. As the front moves into
this more moist airmass expect convection to strengthen across
the eastern portion of the area. So far, a weak cap present in
the kgyx 12z sounding has kept cells from getting very tall, but
a 19z sounding in progress should provide more representative
information for the afternoon environment. With the stronger
winds aloft, some damaging winds are possible in the stronger
cells.

As the front makes its way through the region through the
evening expect convection to move offshore and die off as the
sunsets. While the post frontal environment is a lot drier, the
back edge of the upper level support on water vapor imagery is
still back in the st. Lawrence valley and will likely take most
of the night to clear through. This may allow for just enough
moisture in the northern valleys for some fog to form.

Short term Friday and Friday night
By Friday, we move fully into the post- frontal environment
with drier air mixing to the surface and northwesterly flow.

Highs will be around 10 degrees cooler than today with
temperatures dropping into the 40s and 50s Friday night.

Long term Friday night through Thursday
The long term forecast will feature mainly dry weather with
temperatures near to slightly below average. On Saturday high
pressure at the surface will build in from the west as a 500 mb
trough over the canadian maritimes moves east. Come Sunday a piece
of the 500 mb trough will break off forming a closed upper level low
in the vicinity of new jersey while high pressure at the surface
slowly migrates eastward. Both Saturday and Sunday look like
pleasant days with temperatures in 70s on Saturday and near 70
on Sunday with dewpoints in the mid to low 50s.

On Monday the upper level low will move over southern new england
and may provide enough instability for a chance of showers over
southern areas during the day Monday. After Monday models start
to diverge in handling an area of low pressure off the east
coast as a 500 mb trough digs into the great lakes. On Tuesday
global models take the area of low pressure south and east of
southern new england with a large spread in the placement and
timing of its passage. At the moment it looks like this low will
be too far south and east to bring rain to the region. By the
middle of next week the trough over the great lakes slowly moves
east with a front approaching from the west. This set up will
bring an increase in temperatures and humidity with a chance of
precipitation Wednesday into Thursday.

Aviation 22z Thursday through Tuesday
Short term... Some scattered showers and thunderstorms are
expected to briefly impact the area as a cold front moves
through. These may briefly lower conditions to MVFR. Elsewhere
vfr will remain. Overnight flow becomes northwesterly behind the
front. In the ct river valley and into the northern mountain
valleys patchy fog may lower conditions
long term...VFR through the weekend under high pressure.

Marine
Short term... A cold front will cross the waters tonight with a
few scattered showers possible late this evening. Overnight fog
returns to the eastern waters before a drier airmass slowly
moves in overnight. Northwesterly flow will move into the waters
to start the weekend.

Long term... Winds and seas will remain below SCA thresholds
through the weekend. Seas will build to around 5 feet Tuesday as
an area of low pressure tracks offshore of the southern new
england coastline.

Gyx watches warnings advisories
Me... None.

Nh... None.

Marine... None.

Near term update... Kimble
short term... Curtis
long term... Schroeter


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CASM1 - 8418150 - Portland, ME 7 mi53 min 79°F 64°F
44007 - PORTLAND 12 NM Southeast of Portland,ME 8 mi75 min SW 7.8 G 9.7 71°F 67°F2 ft1008.5 hPa (+1.4)68°F
WEXM1 - Wells Reserve, ME 21 mi65 min W 1 73°F 66°F
WELM1 - 8419317 - Wells, ME 22 mi47 min W 1.9 G 5.1 75°F 67°F1010 hPa
44030 - Buoy B0102 - Western Maine Shelf 27 mi121 min SSW 7.8 G 7.8 71°F 69°F2 ft1008.5 hPa
44073 40 mi121 min WSW 3.9 G 5.8 70°F
BGXN3 - Great Bay Reserve, NH 45 mi80 min W 4.1 76°F 1010 hPa65°F
IOSN3 - Isle of Shoals, NH 45 mi65 min WSW 12 G 12 79°F 1009.3 hPa (+1.4)64°F

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Portland, Portland International Jetport, ME7 mi74 minW 610.00 miPartly Cloudy76°F63°F64%1009.4 hPa

Link to 5 minute data for KPWM

Wind History from PWM (wind in knots)
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Last 24hr----Calm--------SW3S3SW54SW6W7SW6S10SE7S8S8S11S5S5SW3W6W5
1 day ago--SW3------------CalmSW3----S4S5SW7SW7CalmNE4E6E5E5E3E3Calm
2 days agoW6------N5----W5W4NW5N5N4N9NW8NW6CalmS6S8S9S6S6S5SW5--

Tide / Current Tables for Richmond Island, Maine
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Richmond Island
Click for Map
Thu -- 03:59 AM EDT     8.43 feet High Tide
Thu -- 05:53 AM EDT     Sunrise
Thu -- 10:04 AM EDT     1.12 feet Low Tide
Thu -- 12:37 PM EDT     Moonset
Thu -- 04:20 PM EDT     8.84 feet High Tide
Thu -- 07:33 PM EDT     Sunset
Thu -- 10:35 PM EDT     1.10 feet Low Tide
Thu -- 11:09 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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34.86.788.486.85.13.21.71.11.52.74.56.488.88.67.76.14.12.31.31.2

Tide / Current Tables for Portland Head Light, Maine
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Portland Head Light
Click for Map
Thu -- 04:00 AM EDT     8.35 feet High Tide
Thu -- 05:53 AM EDT     Sunrise
Thu -- 10:05 AM EDT     1.11 feet Low Tide
Thu -- 12:37 PM EDT     Moonset
Thu -- 04:21 PM EDT     8.75 feet High Tide
Thu -- 07:33 PM EDT     Sunset
Thu -- 10:36 PM EDT     1.09 feet Low Tide
Thu -- 11:09 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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34.76.67.98.37.96.85.13.21.71.11.52.74.46.37.98.78.67.664.12.31.31.2

Weather Map and Satellite Images
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wmap_A
GOES 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.
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.