Wednesday, August21, 2019 L-36.com


Marine Weather and Tides
Littlejohn Island, 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 5:49AMSunset 7:36PM Wednesday August 21, 2019 7:54 AM EDT (11:54 UTC) Moonrise 10:40PMMoonset 11:35AM Illumination 67% Phase: Waning Gibbous; Moon at 21 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
    EDIT      (on/off)   Help
ANZ153 Casco Bay- 555 Am Edt Wed Aug 21 2019
Today..S winds 5 to 10 kt. Seas 1 foot or less, then 1 to 2 ft this afternoon. A slight chance of showers this morning, then showers likely with a chance of tstms this afternoon. Some tstms may produce gusty winds, small hail, and heavy rainfall this afternoon.
Tonight..S winds 5 to 10 kt. Seas 1 to 2 ft. Showers likely with a chance of tstms in the evening, then a chance of showers after midnight. Areas of fog after midnight. Some tstms may produce gusty winds, small hail, and heavy rainfall in the evening. Vsby 1 to 3 nm after midnight.
Thu..SW winds 5 to 10 kt. Seas 2 to 3 ft. Areas of fog in the morning with vsby 1 to 3 nm.
Thu night..W winds 5 to 10 kt. Seas 1 to 2 ft.
Fri..W winds 5 to 10 kt. Seas 1 to 2 ft.
Fri night..NW winds 5 to 10 kt. Seas 1 foot or less.
Sat..N winds 5 to 10 kt. Seas 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 1 foot or less.
Sun night..E winds 5 to 10 kt. Seas 1 foot or less. Winds and seas higher in and near tstms.
ANZ100 555 Am Edt Wed Aug 21 2019
Synopsis for stonington me to merrimack river ma out to 25 nm.. A warm front will gradually slide north across the waters today. A cold front moves across the area Thursday morning with high pressure and fair weather moving in for Friday and the weekend. &&


7 Day Forecast for Marine Location Near Littlejohn Island, ME
   Hourly   EDIT   Help
location: 43.78, -70.08     debug


Area Discussion for - Gray/Portland, ME
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kgyx 210956
afdgyx
area forecast discussion
national weather service gray me
556 am edt Wed aug 21 2019

Synopsis
A warm front will approach from the southwest and move slowly
northward across the area today. Showers and thunderstorms will
become increasingly likely during the day... With a few severe
storms possible during the afternoon and early evening. A cold
front will sweep across the region early Thursday followed by
cooler and drier air. High pressure will build in over the
weekend and early next week allowing for fair weather.

Near term until 6 pm this evening
555 am... For this estf update I adjusted pops for cluster of
convection that has blossomed the past few hours north of the
warm front and is currently entering western new england.

Prev disc...

at 06z... A weak 1018 millibar surface ridge over northern new
england. A warm front extended from a weak low over the eastern
great lakes into the mid atlantic region. GOES water vapor
imagery showed an associated shortwave impulse over the upper
midwest. NWS doppler radar mosaic showed an area of convection
along and ahead of this impulse. For today... The weak ridge and
comfortable airmass will quickly retreat offshore. The surface
low will track northeast into western quebec by evening pulling
the surface warm front north into the forecast area. Ahead of
this boundary I expect scattered convection to develop across
the area by mid morning. Much of new hampshire and adjacent
southwest maine will then find itself in the warm sector by
later today. An approaching pre-frontal trough and shortwave
impulse should spawn a broken line of convection and a few
supercells upstream of the area by afternoon. Modified forecast
soundings support 1500 to 2000 j kg CAPE values in the warm
sector this afternoon. Cams suggest convection will move east
into the area by mid afternoon before exiting the area by late
evening. It looks like damaging wind gusts will be the primary
threat with large hail potential limited to a few stronger
cells. As convection approaches the warm frontal boundary a few
cells may make the most of the additional shear with a few spin
ups not out of the question. Precipitable water values will rise
to near 1.75 inches by later today and although convection will
move along at a good clip... Any training of cells could result
in a localized flash flood threat. Highs today will be mainly in
the lower 80s... With 70s along the maine coast from casco bay
and points east. However... It'll feel even warmer as dew points
rise into the 60s and lower 70s.

Short term 6 pm this evening through 6 pm Thursday
The impulse exits the coast this evening along with much of the
convection and the potential for strong to severe storms. The
surface low will continue to strengthen over quebec and drag
the cold front across the area in the predawn hours accompanied
by scattered showers and isolated thunder. It'll be a humid
night with areas of stratus and fog. Lows should be in the 60s.

On Thursday... A secondary cold front will cross the area
accompanied by a few clouds and scattered convection. It'll
become noticeably less humid as the day progresses with drier
air being ushered into the area by afternoon on a westerly wind.

Highs will range from 70s in the mountains to the 80s
elsewhere.

Long term Thursday night through Tuesday
For the long the weather looks pleasant with low humidity and
cooler weather through the period.

A cold front moves off the coast Thursday evening with drier air
moving in. Dewpoint temperatures will fall into upper 40s to
lower 50s by Friday afternoon. High pressure holds over the area
through the period. There is a chance of mountain showers Friday
afternoon as a shortwave moves overhead. Other than the chance
of mountain showers Friday the long term looks great with high
temperatures in the upper 60s low to mid 70s. Low temperatures
will be in the upper 40s to mid 50s. It is interesting to note
that the ECMWF shows an upper low developing over the forecast
area Sunday. This is much different than the gfs. If this were
to happen it is likely that Sunday and Monday would see more
clouds and the chance of an afternoon shower especially over the
higher terrain.

Aviation 10z Wednesday through Sunday
Short term through Thursday ...VFR with LCL ifr psb through 12z
in valley stratus and fog. Showers and thunderstorms become
increasingly likely by mid to late morning with areas of MVFR
and LCL ifr, with highest chances between 19z and 00z today.

Thereafter, low clouds and fog may form, especially in valleys
and along the coast.VFR throughout on Thursday with brief lcl
MVFR psb in -shra and isold -tsra.

Long term... MostlyVFR with early morning valley fog.

Marine
Short term through Thursday ... Conditions will remain below
sca thresholds through Thursday.

Long term... Expect winds and seas to remain below SCA criteria.

Gyx watches warnings advisories
Me... None.

Nh... None.

Marine... None.

Es


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CASM1 - 8418150 - Portland, ME 12 mi54 min 66°F 62°F
44007 - PORTLAND 12 NM Southeast of Portland,ME 18 mi64 min S 1.9 G 3.9 68°F 67°F2 ft1014.9 hPa (-0.3)67°F
44032 - Buoy E0104 - Central Maine Shelf 39 mi110 min SSW 7.8 G 9.7 64°F 62°F1014.5 hPa
WEXM1 - Wells Reserve, ME 39 mi54 min WSW 1 63°F 62°F
WELM1 - 8419317 - Wells, ME 41 mi54 min Calm G 1.9 64°F 63°F1015.7 hPa (-0.6)
44030 - Buoy B0102 - Western Maine Shelf 45 mi110 min S 5.8 G 7.8 67°F 68°F2 ft1015.3 hPa

Wind History for Wells, ME
(wind in knots)    EDIT      (on/off)   Help
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
Last
24hr
NW5
G9
N5
G8
N3
G6
--
SE6
SE7
G10
S9
S9
S10
S12
S11
SW9
SW5
S1
NW2
N3
N2
NW2
--
NW1
N2
N1
N1
W1
1 day
ago
W2
W3
G6
SE4
G7
S8
G11
S3
S2
--
S13
S6
SW7
G12
W5
G8
W4
G7
SE2
W2
W2
NW3
W6
G10
NW10
G14
NW5
G8
W4
G8
NW7
G11
NW4
NW5
G8
NW3
G8
2 days
ago
NW4
NW3
SE3
SE5
E6
E5
SE7
SE6
SE6
E5
SE4
SE4
S5
S4
S4
E3
E5
NE4
SE5
SW3
--
W3
NW1
W1

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Portland, Portland International Jetport, ME15 mi63 minN 010.00 miMostly Cloudy63°F59°F87%1015.5 hPa
Auburn-Lewiston, ME22 mi58 minNNE 39.00 miA Few Clouds56°F55°F100%1017.1 hPa
Wiscasset Airport, ME23 mi61 minN 00.15 miFog62°F61°F96%1016.2 hPa

Link to 5 minute data for KPWM

Wind History from PWM (wind in knots)
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
Last 24hrNW5N5N4N9NW8NW6CalmS6S8S9S6S6S5SW5SW4SW3SW3CalmS3CalmCalmCalmCalmCalm
1 day agoCalmW33E8S7S6SE8S10S7SW6SW9
G17
W4SW4SW5SW4W6W7W6NW8N5NW4W6W5W4
2 days agoCalmNW5W3SW3N33E6E7S8S6SE8S4SE5SE3S4SE4E3NE3E6E6E3N3CalmCalm

Tide / Current Tables for Chebeague Point, Great Chebeague Island, Maine
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Chebeague Point
Click for Map
Wed -- 03:15 AM EDT     8.81 feet High Tide
Wed -- 05:51 AM EDT     Sunrise
Wed -- 09:17 AM EDT     0.92 feet Low Tide
Wed -- 11:35 AM EDT     Moonset
Wed -- 03:36 PM EDT     8.92 feet High Tide
Wed -- 07:35 PM EDT     Sunset
Wed -- 09:42 PM EDT     1.06 feet Low Tide
Wed -- 10:39 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
4.56.58.18.88.57.45.73.61.811.22.23.95.97.78.78.98.16.54.52.51.31.11.8

Tide / Current Tables for Upper Hell Gate (Sasanoa River, Maine) Current
   EDIT      (on/off)   Help   One Week of Data
Upper Hell Gate (Sasanoa River
Click for Map
Wed -- 01:07 AM EDT     0.00 knots Slack
Wed -- 04:05 AM EDT     0.82 knots Max Flood
Wed -- 05:49 AM EDT     Sunrise
Wed -- 08:09 AM EDT     -0.00 knots Slack
Wed -- 10:21 AM EDT     -0.83 knots Max Ebb
Wed -- 11:33 AM EDT     Moonset
Wed -- 01:21 PM EDT     0.00 knots Slack
Wed -- 04:30 PM EDT     0.89 knots Max Flood
Wed -- 07:34 PM EDT     Sunset
Wed -- 08:44 PM EDT     -0.00 knots Slack
Wed -- 10:38 PM EDT     Moonrise
Wed -- 10:48 PM EDT     -0.76 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
-0.3-00.30.60.80.70.50.30.1-0.4-0.8-0.7-0.4-0.10.20.50.80.90.70.50.3-0.1-0.6-0.8

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Gray/Portland, ME (7,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Portland, ME
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.