Wednesday, May23, 2018 L-36.com


Marine Weather and Tides
Greenville, ME

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 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.

Sunrise 4:56AMSunset 8:07PM Wednesday May 23, 2018 8:18 PM EDT (00:18 UTC) Moonrise 1:47PMMoonset 2:22AM Illumination 67% Phase: Waxing Gibbous; Moon at 9 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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ANZ151 Penobscot Bay- 641 Pm Edt Wed May 23 2018
Tonight..NE winds 5 to 10 kt. Seas 1 foot or less.
Thu..N winds 5 to 10 kt, becoming sw 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 foot or less.
Thu night..SW winds 10 to 20 kt with gusts up to 25 kt. Seas 1 foot or less, then around 2 ft after midnight.
Fri..SW winds 10 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft.
Fri night..SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. A chance of showers after midnight.
Sat..NW winds 5 to 10 kt, becoming ne in the afternoon. Seas 2 to 3 ft, subsiding to 1 to 2 ft in the afternoon. A chance of showers.
Sat night..E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 1 foot or less. Showers likely.
Sun..E winds 10 to 15 kt with gusts up to 20 kt. Seas 1 foot or less. A chance of showers.
Sun night..E winds 5 to 10 kt. Seas 1 foot or less. A chance of showers.
Mon..E winds 5 to 10 kt. Seas 1 foot or less. A chance of showers.
Mon night..SW winds around 5 kt. Seas 1 foot or less. A chance of showers.
ANZ100 641 Pm Edt Wed May 23 2018
Synopsis for stonington me to merrimack river ma out to 25 nm.. A cold front will exit the region this evening. A warm front will cross the region late Thursday and Thursday night. A backdoor cold front will move southward across the waters over the weekend. A weak disturbance will cross the region early next week.

7 Day Forecast for Marine Location Near Greenville, ME
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location: 45.54, -69.55     debug


Area Discussion for - Caribou, ME
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Fxus61 kcar 232221
afdcar
area forecast discussion
national weather service caribou me
621 pm edt Wed may 23 2018

Synopsis
A cold front will push offshore tonight. High pressure will approach
on Thursday. The high will crest along the east coast Thursday night
as a warm front lifts across the region. The warm front will stall
over the north on Friday.

Near term through Thursday
600 pm update: latest models cont to hint that at least partial
cldnss and even isold shwrs may persist across the rgn thru the
eve hrs as one last mid lvl vort MAX crosses area from cntrl qb.

Subsequently after xtndg isold shwrs and cld cvr in our fcst
grids thru the remainder of the eve, in order not to get mixed
shower frost wording, we backed the onset of frost an hr or
two, relegating it to the very late ngt hrs by which tm skies
should clr. Winds will not be a lmtg factor for frost late ngt,
but rather whether cldnss will move out in tm. Best potential
for frost may be the NW vlys where the frost freeze hdln season
hasn't begun yet (jun 1st).

Otherwise, adjustments were made to provide more trrn defined
winds and temps thru the ovrngt including trends seen from
latest sfc obs with little if any chgs to fcst ovrngt lows.

Orgnl disc: light winds and drier air moving into the region
late tonight will allow some of the colder valleys across the
north to have frost. A frost advisory remains up for eastern
areas of the north where the growing season has begun. Thursday
will be dry as high pressure crests south of the area. The day
will begin mostly sunny. A weak low well to the northwest in
canada will then pull a warm front toward the region Thursday
afternoon increasing clouds, mainly over the north. Thursday
will be cool with lows from the mid 60s downeast to near 60 over
the north.

Short term Thursday night through Saturday
On Thursday night, a warm front will cross the region and
introduce much warmer air for Friday. When the warm front
crosses, there is some risk of thunderstorms with instability
aloft and a strong upper jet. However, there's still uncertainty
whether the best dynamics will be north of the state... To
include the lfq of that jet. Have added a slight chance of
thunderstorms at this point. Lows on Thursday night will drop
into the upper 40s to near 50f under a steep and shallow
inversion that will break quickly on Friday. Friday is a tough
call in terms of the highs. While in the southern half of the
forecast area, temperatures will get well into the mid-upper 80s
for the second time this month, the frontal positions are
uncertain towards northern aroostook where it could get well
into the 80s if the front lifts north of the state. However, the
issue remains in doubt and will go with upper 70s for now. Mid
80s will also extend to the coast with strong offshore winds.

With a deep mixed layer, winds may gust up to 35mph on
Friday... Certainly for south of aroostook county... And in
aroostook county too if temps hit the 80s. A cold front will sag
southward across the state Friday afternoon through Friday
night. There's a respectable amount of CAPE and shear such that
a few severe cells cannot be ruled out. Freezing levels are also
low, so hail could also be a consideration in addition to wind
threats. The front reaches the coast by Saturday morning, but it
will be a very warm night towards bangor and ellsworth with lows
in the lower 60s. It will be much cooler on Saturday behind the
cold front with highs in the upper 60s to lower 70s, but some
mid and high clouds are expected to linger towards bangor and
the coast as the front stalls offshore.

Long term Saturday night through Wednesday
A large ridge of high pressure in quebec will square off again
the stalled frontal boundary south of the state for Saturday
night into Monday night. The high will keep skies fairly clear
in northern zones, but high and mid clouds will remain further
south Saturday night and spread east and north during Sunday
into Monday. An onshore flow will develop for Sunday and Monday
and keep temperatures in the 40s to low 50s along the coast. The
cool marine layer will also spread inland on these days with
highs only in the 50s and 60s for most of the area. Pops
generally increase Sunday night into Monday as the high slowly moves
further offshore, deep upper level southern stream moisture
moves northward and an upper trough propagates eastward from the
great lakes region. A cold frontal boundary will finally push
through Monday night and bring warmer and drier weather Tuesday
and Wednesday. Gusty northwest winds could be an issue both days
with a deep mixed layer.

Aviation 22z Wednesday through Monday
Near term: a cold front will push offshore early this evening.

Vfr conditions are then expected across the area tonight and
Thursday.

Short term: expect mostlyVFR conditions until Monday when ifr
and MVFR CIGS will be prevalent. There will be a cold front
crossing the area Friday afternoon into Friday night with
thunderstorms. There will also be strong southwest wind gusts on
Friday. These gusts could reach up to 35 mph... Mostly south of
aroostook county airfields.

Marine
Near term: a front pushing offshore early tonight may bring
some spotty showers along the coast. An isolated thunderstorm
with gusty winds and small hail is possible early this evening.

Otherwise, showers will end early this evening. Winds should
remain below SCA tonight and Thursday.

Short term: an SCA is possible Thursday night into Friday. Seas
may stay up as late as Friday night. Fog risk increases Sunday
night into Monday night.

Car watches warnings advisories
Me... Frost advisory from 2 am to 7 am edt Thursday for mez002-005-
006.

Marine... None.

Near term... Vjn
short term... Mcw
long term... Mcw
aviation... Vjn mcw
marine... Vjn mcw


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Greenville, ME6 mi23 minN 7 mi50°F36°F59%1014.9 hPa

Wind History from GNR (wind in knots)
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Last 24hrS45S9
G14
4CalmCalmCalmCalmCalmCalmCalmNW6NW7NW7NW10N9N11
G22
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G19
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N7
1 day agoNW6NW6N4N3CalmS4SE3CalmCalmCalmCalmSE65S9
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2 days agoNW5NW12NW10
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NW8NW8NW7NW633NW8NW75NW9
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G20
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G27
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G27
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G22
W7
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NW14
G25
W9
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G19
NW4

Tide / Current Tables for Bangor, Penobscot River, Maine
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Bangor
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Wed -- 12:19 AM EDT     0.56 feet Low Tide
Wed -- 02:18 AM EDT     Moonset
Wed -- 04:58 AM EDT     Sunrise
Wed -- 06:01 AM EDT     13.94 feet High Tide
Wed -- 12:50 PM EDT     -0.11 feet Low Tide
Wed -- 01:44 PM EDT     Moonrise
Wed -- 06:34 PM EDT     13.51 feet High Tide
Wed -- 08:05 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.712.64.6812.213.91311.610.37.73.90.8-0.112.65.39.61313.312.211.49.76.4

Tide / Current Tables for Hampden, Penobscot River, Maine
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Hampden
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Wed -- 12:23 AM EDT     1.04 feet Low Tide
Wed -- 02:18 AM EDT     Moonset
Wed -- 04:59 AM EDT     Sunrise
Wed -- 06:37 AM EDT     13.72 feet High Tide
Wed -- 12:59 PM EDT     0.03 feet Low Tide
Wed -- 01:44 PM EDT     Moonrise
Wed -- 07:22 PM EDT     13.59 feet High Tide
Wed -- 08:05 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.21.335.99.211.913.413.612.39.66.12.90.800.93.26.59.812.213.513.311.58.65.3

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Caribou, ME (20,4,5,8)
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Ground Weather Radar Station Caribou, 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.