Tuesday, May21, 2019 L-36.com


Marine Weather and Tides
Littlejohn Island, ME

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 5:06AMSunset 8:06PM Tuesday May 21, 2019 2:27 AM EDT (06:27 UTC) Moonrise 10:59PMMoonset 7:21AM Illumination 95% Phase: Waning Gibbous; Moon at 17 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- 1209 Am Edt Tue May 21 2019
.small craft advisory in effect from 7 am edt this morning through this evening...
Rest of tonight..W winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. Areas of fog. Vsby 1 to 3 nm.
Tue..W winds 10 to 20 kt, becoming nw 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 2 to 3 ft. Areas of fog in the morning.
Tue night..NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Seas 1 to 2 ft in the evening, then 1 foot or less.
Wed..N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 1 foot or less.
Wed night..E winds around 5 kt, becoming W after midnight. Seas 1 foot or less.
Thu..SW winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon.
Thu night..SE winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
Fri..E winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
Fri night..S winds around 5 kt. Seas 2 to 3 ft.
Sat..S winds 5 to 15 kt. Seas 2 to 3 ft. A chance of showers.
Sat night..SW winds around 10 kt. Seas 2 to 4 ft. A chance of showers.
ANZ100 1209 Am Edt Tue May 21 2019
Synopsis for stonington me to merrimack river ma out to 25 nm.. A cold front crosses the gulf of maine tonight with gusty northwest winds on Tuesday. Winds diminish Tuesday night and Wednesday as high pressure builds in from the west. &&


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


Area Discussion for - Gray/Portland, ME
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Fxus61 kgyx 210410
afdgyx
area forecast discussion
national weather service gray me
1210 am edt Tue may 21 2019

Synopsis
A cold front crosses the region this evening, bringing cooler
and drier air to new hampshire and western maine for midweek.

Another area of low pressure crosses the region Thursday night
into early Friday. It will be seasonably mild, but unsettled
through the weekend.

Near term until 6 am this morning
Update...

minor edits for temperatures, dew points and wind values across
the region with this latest update.

10 pm update...

we have a few hours between the rain and the gusty winds which
will set in towards daybreak. In between we are seeing fog
develop, especially in areas where it has rained. Have kept
patchy fog for the forecast area with areas of fog expected over
the waters, at least until NW kick in which again will be
several hours even in the western zones. We may see some spots
of dense fog. Skies are gradually clearing out as well but will
keep clouds and showers over the mountains as per previous
discussion at 645 pm. Made minor changes to the forecast to
further trim back pops and adjust temperatures and dew points.

645 pm update...

have gone ahead and cancelled the severe thunderstorm watch as
storms move out of the area and we continue to lose diurnal
heating. Any thunder will be confined to eastern maine and along
or off the coast for the next couple of hours. A warm front
has pushed into northeastern maine with a pre-frontal
trough cold front already moving into southern nh and coastal
maine. The warm sector will gradually push offshore this evening
allowing gusty NW winds and drier air to work their way in.

Adjusted pops to drop them quite a bit where there is no forcing
for ascent. Expect some showers in the mountains however,
especially overnight as froude numbers and pattern recognition
support this.

Previous discussion...

low pressure moving tracking near the saint lawrence valley is
sending a cold front eastward across new england. Ahead of it, a
warm and humid air mass is in place. This has led to some
moderate instability and a few isolated to scattered showers and
a few thunderstorms. Overall wind flow environment still favors
storm organization, although the limiting factor is
instability. It remains possible for storms to strengthen and
produce damaging winds and small hail through this evening along
and ahead of the front. Will continue to monitor the severe
weather threat through the evening and update watch 198 as
appropriate.

Expect the cold front to shut activity off as it moves through
and reaches the coast by early evening. Winds shift to the west
with drier air moving in behind it. Lows tonight should reach
the 40s to upper 50s.

Short term 6 am this morning through 6 pm Wednesday
West northwest winds become strong and gusty on Tuesday as cold
advection combines with a strong pressure gradient. The
combination of strong winds aloft, good mixing in cold
advection, and downsloping conditions on the coastal plain will
allow the stronger winds to reach the ground level. Currently
expect gusts to be just below advisory levels... Topping off in
the 30 to 40 mph range with a few gusts to 45 mph possible.

Temperatures on Tuesday will reflect the northwest flow pattern
with cooler conditions up north and the warmest conditions in
the south and coast. Winds die down a bit Tuesday night as high
pressure builds in from the west. Most of the area falls into
the 40s. Temperatures in northern valleys may approach the mid
30s, but expect winds will remain strong enough to prevent
dropping to freezing or for frost to form. However, this will
need to be monitored.

Long term Wednesday night through Monday
500 mb continues to show blocking pattern over ERN canada and n
atlantic thru the long range, but ridge development over srn
conus will push the coldest air poleward, and this should help
moderate temps closer to normal in the extended, despite
continued unsettled conditions, as troughs continue to affect
nrn new england.

Sfc high pressure squeezes in from the south for Wed into thu,
and for the most part those days look dry. Warm air starts to
move back in by Wed and highs will mostly be in the 60s, with
partly to mostly sunny skies. Wed night will be calm and nearly
clear so lows will drop off to around 40 in the north to the
mid to upper 40s in the south. Thu will feature increasing
clouds as the next system approaches, and highs in the mid 60s
to low 70s.

Fast moving 500 mb wave moves across the CWA Thu night, and
resembles a ridge rider type mcs, although expect CWA to be on
the cools side and end up with just some rain which will mainly
be confined to the overnight. A more significant trough passes
to our N around Saturday and will drag a cold front across the
region Saturday , which provides an other chance of showers.

Another wave follows quickly for Sunday or Monday. Temps thru
the period will run close to normal.

Aviation 04z Tuesday through Saturday
Short term... A cold front moves through today with a few showers
and strong storms possible ahead of the front. However, coverage
is too low to keep mention of thunder in any TAF at the moment.

Should see winds shifting to the west and clearing conditions
through the night. Winds on Tuesday will gust to 30 to 35 kt out
of the northwest before diminishing a bit Tuesday night.

Long term... MVFR-ifr possible in shra Thu night, with some
showers briefly producing flight restrictions on sat.

Marine
Short term... Southwest winds shift to west this evening behind a
cold front. Expect stronger northwest winds beginning on Tuesday
and gradually diminishing Tuesday night. Small craft advisory
has been issued for Tuesday. It's possible a few gusts to 35kt
could occur near the immediate coastline.

Long term... Generally quiet on the waters with sub-sca
conditions through Friday.

Gyx watches warnings advisories
Me... None.

Nh... None.

Marine... Small craft advisory from 7 am this morning to midnight edt
tonight for anz151-153.

Small craft advisory from 7 am this morning to noon edt
Wednesday for anz150-152-154.

Jc


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CASM1 - 8418150 - Portland, ME 12 mi45 min 47°F
44007 - PORTLAND 12 NM Southeast of Portland,ME 18 mi37 min W 7.8 G 9.7 57°F 48°F3 ft1002.5 hPa (-0.4)50°F
44032 - Buoy E0104 - Central Maine Shelf 39 mi143 min WSW 5.8 G 5.8 50°F 46°F4 ft1001.8 hPa
WEXM1 - Wells Reserve, ME 39 mi87 min W 4.1 67°F 53°F
44030 - Buoy B0102 - Western Maine Shelf 45 mi83 min NW 12 G 14 58°F 49°F3 ft1002.6 hPa

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Portland, Portland International Jetport, ME15 mi36 minW 9 G 1810.00 miMostly Cloudy64°F48°F56%1003.2 hPa
Auburn-Lewiston, ME22 mi31 minSW 810.00 miMostly Cloudy61°F52°F72%1003.7 hPa
Wiscasset Airport, ME23 mi34 minN 04.00 miFog/Mist57°F55°F96%1002.4 hPa

Wind History from PWM (wind in knots)
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Last 24hrNW3CalmCalmE4SE3CalmCalmS3S6S5S4SW6S7S10S8NW6S4S4S6CalmCalmW8NW12W9
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Tide / Current Tables for Chebeague Point, Great Chebeague Island, Maine
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Chebeague Point
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Tue -- 01:12 AM EDT     10.64 feet High Tide
Tue -- 05:09 AM EDT     Sunrise
Tue -- 07:21 AM EDT     Moonset
Tue -- 07:32 AM EDT     -0.74 feet Low Tide
Tue -- 01:53 PM EDT     9.38 feet High Tide
Tue -- 07:40 PM EDT     0.67 feet Low Tide
Tue -- 08:05 PM EDT     Sunset
Tue -- 10:59 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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9.810.610.28.66.13.20.8-0.5-0.60.62.75.37.58.99.48.76.94.52.30.90.71.63.66

Tide / Current Tables for Upper Hell Gate (Sasanoa River, Maine) Current
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Upper Hell Gate (Sasanoa River
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Tue -- 01:58 AM EDT     1.07 knots Max Flood
Tue -- 05:07 AM EDT     Sunrise
Tue -- 05:51 AM EDT     -0.00 knots Slack
Tue -- 07:19 AM EDT     Moonset
Tue -- 08:04 AM EDT     -1.04 knots Max Ebb
Tue -- 11:54 AM EDT     0.00 knots Slack
Tue -- 02:37 PM EDT     0.94 knots Max Flood
Tue -- 06:25 PM EDT     -0.00 knots Slack
Tue -- 08:04 PM EDT     Sunset
Tue -- 08:22 PM EDT     -0.80 knots Max Ebb
Tue -- 10:58 PM EDT     Moonrise
Tue -- 11:50 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.91.110.90.6-0.1-0.8-1-0.9-0.7-0.40.10.60.90.90.90.70.3-0.4-0.8-0.7-0.5-0.3

Weather Map and Satellite Images
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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.
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Wind Forecast for Gray/Portland, ME (2,6,7,8)
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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.