Monday, July24, 2017 L-36.com


Marine Weather and Tides
Bowdoinham, ME

Version 3.4
What's New / NOTES
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.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 5:19AMSunset 8:13PM Monday July 24, 2017 4:51 PM EDT (20:51 UTC) Moonrise 6:42AMMoonset 9:07PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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- 325 Pm Edt Mon Jul 24 2017
Tonight..NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Rain, mainly this evening. Patchy fog.
Tue..NE winds 10 to 15 kt with gusts up to 20 kt, becoming N 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Patchy fog in the morning.
Tue night..NW winds around 5 kt. Seas 1 to 2 ft. Patchy fog.
Wed..W winds around 5 kt, becoming S in the afternoon. Seas 1 to 2 ft. Patchy fog in the morning.
Wed night..SW winds 5 to 10 kt. Seas 1 to 2 ft.
Thu..SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. A chance of showers.
Thu night..SW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
Fri..SW winds around 5 kt. Seas around 2 ft. A chance of showers.
Fri night..NE winds 5 to 10 kt. Seas 1 foot or less. A chance of showers.
Sat..N winds 5 to 10 kt. Seas 1 foot or less.
Sat night..NW winds around 5 kt. Seas 1 foot or less.
ANZ100 325 Pm Edt Mon Jul 24 2017
Synopsis for stonington me to merrimack river ma out to 25 nm.. Low pressure will track from near cape cod this evening to near nova scotia tomorrow morning. High pressure over the great lakes gradually builds east behind the departing low Tuesday and settles into the gulf of maine on Wednesday. While the high begins to move east into the atlantic on Thursday, a cold front and possible low pressure system will push into the region by Friday.

7 Day Forecast for Marine Location Near Bowdoinham, ME
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location: 44.01, -69.9     debug


Area Discussion for - Gray/Portland, ME
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Fxus61 kgyx 242011
afdgyx
area forecast discussion
national weather service gray me
411 pm edt Mon jul 24 2017

Synopsis
Low pressure tracking through the gulf of maine tonight will
keep rain in the forecast through the evening with lingering
showers tapering off Tuesday morning. High pressure builds in
from the west on Tuesday and shifts offshore on Wednesday. Some
warmer air moves in on Wednesday, bringing temperatures back up
to near normal. But a cold front pushes toward the area on
Thursday, with low pressure possibly forming along the front
bringing another chance of rain and cooler temperatures.

Near term tonight
The large area of steady, moderate rains will continue to exit
to the east this evening. This will leave the region with
pockets of mainly light rainfall and patchy fog. The latest hrrr
continues to show most of the precipitation exiting eastern
areas during the 03z to 06z range.

With the cloud cover and a northeasterly gradient, temperatures
will not move all that much from their current readings.

Short term Tuesday and Tuesday night
Much of the precipitation will be east of the region on Tuesday.

Low level winds will back to the north during the day, allowing
for limited drying. However, the upper level low pressure system
will remain overhead during this period. Scattered showers will
develop as lapse rates increase and surface temperatures reach
milder conditions than today, about 70 degrees for many
locations. This precpitation will be mainly away from the
coastline.

The scattered showers will diminish around sunset on Tuesday
evening as high pressure builds over northern new england. This
will leave the remainder of Tuesday night rainfree. However,
plenty of low level moisture will linger over the region,
allowing patchy fog to form once again.

Long term Tuesday night through Monday
High pressure crosses the area Tuesday night, bringing decent
radiational cooling conditions with a dry air mass in place.

Temperatures will fall into the 40s and 50s overnight, rather
cool for this time of year.

High pressure shifts offshore on Wednesday with a return
southerly flow developing. This will bring warmer and more humid
conditions back into the area, though we will still see
temperatures near normal for late july.

Models diverge a bit on the handling of the next trough. The gfs
sends most of the energy with this trough eastward in
progressive fashion to our north, sliding a cold front through
our area on Thursday. This would bring a chance of showers and
thunderstorms as the front moves through, with less humid but
still seasonable temperatures behind the front for Friday. The
ecmwf and cmc models, however, are in agreement that the better
energy will linger near the base of the upper trough, spinning
up a rather strong surface low which tracks across southern new
england on Friday. This would send a good chunk of rain headed
our way, with temperatures staying quite cool on Friday. Given
the newly upgraded GFS is the outlier, it would seem that the
ecmwf cmc might be on to something here. Have tilted the
forecast in favor of this scenario for Friday, though
uncertainty remains.

High pressure builds in behind the departed front low for the
weekend, bringing fair weather and temperatures near seasonal
normals but with only moderate humidity.

Aviation 20z Monday through Saturday
Short term... Pockets of light rain and fog will continue
overnight, bringing some areas of ifr and lifr conditions.

Ceilings will be lowest along the coast. A gradual lifting of
the clouds will occur on Tuesday, but there will still be
scattered showers.

Long term... There will be a chance of thunderstorms on Thursday
and a chance of more widespread ifr to lifr conditions in rain
on Friday.

Marine
Short term... Prolonged northeaterly flow over the waters will
allow waves to build into the 4 to 7 foot range. Increased
gradient will allow for wind gusts to 25 to 30 knots along the
outer waters. Seas will be slow to subside on Tuesday.

Long term... Winds and seas remain fairly calm over the waters
for the next several days as high pressure crosses the gulf of
maine. A return southerly flow begins on Thursday, with a cold
front or low pressure passing through on Friday. Depending on
the track of this low, it is possible that advisory level
conditions could occur.

Tides coastal flooding
The astronomical high tide in portland harbor is 11.5 feet
tonight. Northeasterly winds will allow for a half foot or more
storm surge overnight, bringing the storm tide to between 12 and
12.5 feet. Flood stage is 12 feet. Minor flooding is expected
along the wharfs and wharf side streets in portland, granite
point road in biddeford and the backbay area of hampton.

Nearshore waves building to 4 to 7 feet may allow for some
splash-over in saco tonight.

Gyx watches warnings advisories
Me... Coastal flood advisory from midnight tonight to 3 am edt
Tuesday for mez023-024.

Nh... Coastal flood advisory from midnight tonight to 3 am edt
Tuesday for nhz014.

Marine... Small craft advisory until 6 pm edt Tuesday for anz150-152-154.

Jc ck


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CASM1 - 8418150 - Portland, ME 31 mi51 min 59°F 59°F1015.6 hPa (-0.6)
44032 - Buoy E0104 - Central Maine Shelf 35 mi107 min NNE 16 G 18 57°F 57°F2 ft1014.2 hPa
44007 - PORTLAND 12 NM Southeast of Portland,ME 36 mi61 min NE 14 G 18 59°F 63°F3 ft1015 hPa (-0.0)54°F
44033 - Buoy F0103 - West Penobscot Bay 48 mi107 min ENE 9.7 G 12 59°F 59°F1 ft1015.3 hPa

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, ME11 mi58 minN 010.00 miLight Rain61°F55°F84%1016.1 hPa
Auburn-Lewiston, ME21 mi55 minN 410.00 miRain59°F55°F87%1017.9 hPa
Augusta, Augusta State Airport, ME22 mi58 minENE 410.00 miLight Rain61°F52°F72%1016.4 hPa

Wind History from IWI (wind in knots)
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Last 24hrS6S6S5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNE3E33E7E6Calm3Calm
1 day agoS8SW6SW3CalmCalmCalmCalm5534Calm43CalmNE5E65E56CalmSE8S8S6
2 days agoSW6SW9SW5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm346W8W65SW10
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Tide / Current Tables for Bowdoinham, Cathance River, Kennebec River, Maine
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Bowdoinham
Click for Map
Mon -- 02:26 AM EDT     7.32 feet High Tide
Mon -- 05:19 AM EDT     Sunrise
Mon -- 06:41 AM EDT     Moonrise
Mon -- 08:59 AM EDT     -0.98 feet Low Tide
Mon -- 03:06 PM EDT     6.46 feet High Tide
Mon -- 08:12 PM EDT     Sunset
Mon -- 09:07 PM EDT     Moonset
Mon -- 09:11 PM EDT     -0.35 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.86.47.27.26.34.72.60.7-0.5-1-0.50.92.84.65.96.56.153.41.60.3-0.3-01.2

Tide / Current Tables for Upper Hell Gate (Sasanoa River, Maine) Current
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Upper Hell Gate (Sasanoa River
Click for Map
Mon -- 12:38 AM EDT     1.25 knots Max Flood
Mon -- 04:27 AM EDT     -0.00 knots Slack
Mon -- 05:19 AM EDT     Sunrise
Mon -- 06:41 AM EDT     Moonrise
Mon -- 06:46 AM EDT     -1.24 knots Max Ebb
Mon -- 10:32 AM EDT     0.00 knots Slack
Mon -- 01:21 PM EDT     1.16 knots Max Flood
Mon -- 05:02 PM EDT     -0.00 knots Slack
Mon -- 07:08 PM EDT     -1.03 knots Max Ebb
Mon -- 08:11 PM EDT     Sunset
Mon -- 09:06 PM EDT     Moonset
Mon -- 10:38 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.21.21.10.90.4-0.5-1.1-1.2-1-0.8-0.30.30.91.11.110.70-0.7-1-0.9-0.7-0.30.2

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Northeast    EDIT
Geos

Wind Forecast for Gray/Portland, ME (16,3,4,5)
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Ground Weather Radar Station Portland, ME
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weather_mapweather_map weather_map

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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.