Wednesday, April25, 2018 L-36.com


Marine Weather and Tides
Boothbay Harbor, ME

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 5:37AMSunset 7:37PM Wednesday April 25, 2018 2:02 PM EDT (18:02 UTC) Moonrise 2:49PMMoonset 3:44AM Illumination 79% 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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ANZ152 Coastal Waters From Port Clyde, Me To Cape Elizabeth, Me Out 25 Nm- 1036 Am Edt Wed Apr 25 2018
.small craft advisory in effect from 5 pm edt this afternoon through Thursday evening...
This afternoon..SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Occasional rain. Patchy fog with vsby 1 to 3 nm.
Tonight..SE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft, building to 6 to 9 ft after midnight. Rain. Patchy fog. Vsby 1 to 3 nm.
Thu..S winds 10 to 15 kt with gusts up to 25 kt. Seas 7 to 9 ft. Areas of fog in the morning. Rain in the morning, then a chance of showers in the afternoon.
Thu night..W winds 10 to 15 kt with gusts up to 25 kt. Seas 6 to 9 ft.
Fri..SW winds 5 to 10 kt, becoming S in the afternoon. Seas 4 to 7 ft. A chance of showers in the afternoon.
Fri night..S winds 5 to 10 kt. Seas 4 to 6 ft. A chance of showers.
Sat..S winds 5 to 10 kt with gusts up to 20 kt. Seas 4 to 7 ft.
Sat night..SW winds around 10 kt with gusts up to 20 kt. Seas 4 to 6 ft.
Sun..W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft.
Sun night..NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft.
ANZ100 1036 Am Edt Wed Apr 25 2018
Synopsis for stonington me to merrimack river ma out to 25 nm.. Low pressure moves north toward new england today. As the low moves through northern new england on Thursday it will send a cold front eastward across the gulf of maine with high pressure building behind it through Friday morning. The next low may track up the east coast and toward the gulf of maine as early as Friday night with a stronger cold front arriving on Saturday.

7 Day Forecast for Marine Location Near Boothbay Harbor, ME
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location: 43.84, -69.64     debug


Area Discussion for - Gray/Portland, ME
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Fxus61 kgyx 251440
afdgyx
area forecast discussion
national weather service gray me
1040 am edt Wed apr 25 2018

Synopsis
Low pressure moves north into the area today allowing rain to
overspread the area from the southwest in the morning and work
northeast by afternoon. A good soaking rain is expected for most
of the region. This system will slowly exit the region
Thursday. A cold front Saturday evening will allow cooler air to
push back into new england. A warming trend is expected early
next week however.

Near term until 10 pm this evening
1030 am... Fine tuning pops a little bit into this afternoon
based on current trends, and meso models. The hrrr seems to hit
a on abit of a convective cluster moving across SE nh and the
me coastal plain between 22z and 04z, so hit this period with
the mention of heavy rain. I left thunder out, but would not be
surprised for a few rumbles near the coast at this time as well.

645am update...

rain now moving into southwest new hampshire. Have updated the
forecast to adjust the timing of rain arrival as well as adjust
morning temperatures.

Original discussion...

first batch of rain already trying to move into the area from
the southwest. Expect top-down moistening of the air mass as
this moves in, with likely some evaporational cooling into the
40s as rain begins. Rain becomes steadier and more widespread as
the day GOES on and low pressure approaches from the southwest.

High temperatures today will not be that far from current
temperatures, except perhaps northeastern areas which could warm
up a bit this morning before rain arrives. Went below most
guidance on highs today, more in line with higher resolution
guidance due to the onshore flow from the cold gulf of maine as
well as evaporationally cooled low level inversion expected.

Short term 10 pm this evening through 6 pm Thursday
Axis of steadier rain shifts east across the area tonight,
moving into eastern maine on Thursday. With increasing moisture
levels and limited cooling we could see fog developing as well.

When it's all said and done, most areas on the coastal plain and
into the eastern foothills will see about an inch of rainfall.

Worth noting that there is a fairly broad range in model
forecast rainfall amounts, with the NAM generally being dry
(maybe a half inch?) and the canadian and GFS being the wettest
(1.5 inches?). Current forecast is a bit of a blend, with some
emphasis on terrain-enhanced areas as well as higher amounts
along the immediate coastline.

As steady precipitation moves east on Thursday, expect more
showers to develop under the cold core upper low moving in from
the west during the day Thursday. So although the steady rain
ends, more showery weather continues. With better mixing
expected on Thursday, temperatures make another run at 60, with
southern areas most likely to top this threshold while northern
areas stay cloudier and may not reach it.

Long term Thursday night through Tuesday
The extended forecast looks progressive with a large cutoff low
centered near nunavut offering continued chances for
precipitation this weekend and into next week. Several spokes of
energy cycle through the northeastern CONUS the next several
days. Friday evening surface low pressure will develop over the
east coast and move northeast. Models are not in agreement with
the location of the dominant surface low, but a warm front
should arrive sometime Friday evening with a cold front
following for Saturday evening. This will produce widespread
rain showers across the region.

Friday and Saturday will be relatively warm with upper 50s to
mid 60s in southerly flow ahead of the system. Increasing clouds
and precipitation will cool things off with 850mb temperatures
dropping about 10 degrees by Sunday morning. Highs at the
surface will struggle into the mid 40s over the mountains and
foothills, with mid 50s elsewhere. This is not overly cool for
this time of year, but after warmer weather recently, it will
feel more than a couple degrees below normal.

A warming trend looks on tap for next week with modified high
pressure pushing up from the south and skirting fast moving flow
to our north. This looks like a good stretch of precipitation
free weather... Except for the mountains which may see just
enough short wave energy to produce partly cloudy skies and
showers.

Aviation 15z Wednesday through Sunday
Short term... Expect deteriorating conditions from southwest to
northeast today, with conditions becoming ifr by evening in
rain. Could stay MVFR on the other side of the mountains up in
whitefield. There is the potential for fog to develop this
evening into tonight which would cause further reduction in
visibility, possibly as low as 1 4 mile. Conditions improve
fairly rapidly Thursday morning from west to east, with
scattered showers moving in from the west especially during the
afternoon.

Long term... PrevailingVFR is expected Thursday night through
Friday morning, but conditions may deteriorate to MVFR or ifr at
times late Friday into Saturday in rain showers. Lingering
-shra -shsn are possible for khie and kleb Saturday night into
Sunday with other sitesVFR. Gusty NW winds are forecast for
Sunday afternoon and evening.

Marine
Short term... Increasing onshore southeast flow expected today
and tonight, likely topping out at about 30 kt. Prolonged
southeast fetch will also increase the wave heights to over 5
ft, and as high as 10 ft in the central gulf of maine waters
near matinicus. Winds shift to the west and decrease on
Thursday, though it will take a little while for seas to
subside.

Long term... Waves may increase in southerly flow Saturday. Winds
and seas also approach SCA conditions in west flow behind a
cold front Saturday night into Sunday.

Hydrology
There is still a good amount of snow left especially in the
higher terrain. Warm temperatures yesterday brought rises to
many of the headwater gages. Expect continued snow melt to
combine with about an inch of rainfall to bring further rises to
all rivers, but especially the headwaters that drain eastward
out of the mountains toward the atlantic. These are the areas
most likely to see minor flooding, and some locations are
currently forecast by the RFC to reach minor flooding. Because
of this, we have issued a flood watch covering the most likely
impacted areas, including the upper saco river as well as
tributaries of the androscoggin river. Flooding cannot be ruled
out on the upper pemigewasset river as well as along the
kennebec.

Gyx watches warnings advisories
Me... Flood watch from 8 pm edt this evening through Thursday
afternoon for mez007>009-012>014-021.

Nh... Flood watch from 8 pm edt this evening through Thursday
afternoon for nhz001>006.

Marine... Small craft advisory from 5 pm this afternoon to 8 pm edt
Thursday for anz150-152-154.

Synopsis...

near term... Cempa kimble
short term... Kimble
long term... Hanes
aviation...

marine...

hydrology...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44032 - Buoy E0104 - Central Maine Shelf 17 mi118 min E 5.8 G 5.8 46°F 43°F2 ft1019.2 hPa
44007 - PORTLAND 12 NM Southeast of Portland,ME 34 mi72 min ENE 7.8 G 9.7 44°F 43°F1 ft1018.4 hPa (-2.5)43°F
CASM1 - 8418150 - Portland, ME 35 mi44 min 47°F 42°F1018.1 hPa
44033 - Buoy F0103 - West Penobscot Bay 37 mi118 min E 3.9 G 3.9 44°F 42°F2 ft1021 hPa
MISM1 - Matinicus Rock, ME 42 mi62 min ESE 9.9 G 9.9 48°F 1019.5 hPa (-2.1)

Wind History for Wells, ME
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wiscasset Airport, ME8 mi69 minS 710.00 miOvercast55°F48°F77%1019.5 hPa

Wind History from IWI (wind in knots)
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Last 24hrS7S7S11
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SW5Calm3S443S5S5S4S73
1 day agoS10S7S10SW8SW6S7CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSW4S6SW8S5S8S6S7S9
2 days ago565NW7CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm3CalmSW4W5CalmSE8

Tide / Current Tables for Boothbay Harbor, Maine
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Boothbay Harbor
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Wed -- 01:31 AM EDT     0.92 feet Low Tide
Wed -- 03:44 AM EDT     Moonset
Wed -- 05:39 AM EDT     Sunrise
Wed -- 07:51 AM EDT     9.46 feet High Tide
Wed -- 02:11 PM EDT     0.13 feet Low Tide
Wed -- 02:48 PM EDT     Moonrise
Wed -- 07:34 PM EDT     Sunset
Wed -- 08:34 PM EDT     9.21 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
21.1123.85.97.99.19.48.87.14.82.50.90.20.51.946.2899.18.16.2

Tide / Current Tables for Lowe Point (northeast of), Sasanoa River, Maine Current
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Lowe Point (northeast of)
Click for Map
Wed -- 03:27 AM EDT     0.00 knots Slack
Wed -- 03:44 AM EDT     Moonset
Wed -- 05:39 AM EDT     Sunrise
Wed -- 05:50 AM EDT     1.50 knots Max Flood
Wed -- 09:40 AM EDT     -0.00 knots Slack
Wed -- 12:01 PM EDT     -1.99 knots Max Ebb
Wed -- 02:49 PM EDT     Moonrise
Wed -- 04:01 PM EDT     0.00 knots Slack
Wed -- 07:34 PM EDT     Sunset
Wed -- 07:50 PM EDT     1.63 knots Max Flood
Wed -- 10:20 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.7-1.4-1.1-0.40.61.31.51.41.30.7-0.4-1.6-2-1.8-1.5-1-011.51.61.61.40.4-0.9

Weather Map and Satellite Images
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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 (14,3,4,5)
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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.