Friday, May26, 2017

Marine Weather and Tides
Limestone, ME

Version 3.4
What's New / NOTES
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 5:32AMSunset 9:05PM Friday May 26, 2017 2:27 AM ADT (05:27 UTC) Moonrise 5:42AMMoonset 9:03PM Illumination 0% Phase: New Moon; 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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7 Day Forecast for Marine Location Near Limestone, ME
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location: 46.91, -66.32     debug

Area Discussion for - Caribou, ME
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Fxus61 kcar 260328
area forecast discussion
national weather service caribou me
1128 pm edt Thu may 25 2017

A strengthening area of low pressure will move into the gulf of
maine on Friday... Bringing widespread rainfall to the region. Drier
and milder conditions will move into the region for Saturday and
Sunday as a weak area of high pressure builds overhead. The weather
looks to turn unsettled again beginning on memorial day and
continuing through much of the week as a large area of low pressure
remains anchored over eastern canada... Bringing numerous rounds of
showers the northeastern united states.

Near term through Friday
11:30 pm update... Rain has spread into northwestern areas and so
updated forecast to put definite rain much further north across
the area. Otherwise, temperatures look good.

Previous discussion...

high impact weather potential: some splash over possible at the
time of high tide tonight.

Current pattern: deep southerly moisture plume up the eastern
seaboard is evident in water vapor imagery early this afternoon as
impressive trough over the eastern united states develops a negative
tilt with primary low over ohio gradually yielding to secondary
development over the DELMARVA that will strengthen as it moves
northeast into the gulf of maine by 12z Friday.

Through this evening: top down saturation continues... With
thickening lowering mid and upper cloud cover. Upstream
observations have shown that the leading edge of the precipitation
shield has had some trouble reaching the ground with cold air
damming pressure pattern in place and a somewhat dry llevel easterly
flow. Have seen krkd report a few sprinkles last hour. However...

as the warm front at h8 lifts north and southerly flow spreads
north behind it... Expect shower activity to continue to reach
further north... With our first sprinkles light showers arriving
along the coast towards 5-6pm. Temperatures will begin falling
back through the 50s. Easterly winds will continue to strengthen
as the gradient increases as low pressure approaches from the
south and west.

Tonight: scattered showers should continue to spread north in
conjunction with the warm front at h8 this evening... But heavier
precipitation will wait for well after midnight as core of mid
level vorticity rotates north with surface low responding by
deepening as it moves north and east into the gulf of maine.

This mid level forcing will have modest 1.25" pwats to work with
along with a coupled jet and good convergence along the low mid
level warm front. This should help form a blossoming area of
heavier rainfall south of our region by midnight... Which will
rotate north... Arriving towards daybreak. Temperatures will
only fall to around 50 given the increasing cloud cover.

Short term Friday night through Saturday
High impact weather potential: not expected at this time.

Mid level low catches up with surface low during the day Friday with
the latter feature thus slowing as it arrives in the gulf of maine
before beginning to slowly fill and head to near halifax by 00z
Saturday. The 12-18z period looks best in terms of dynamic forcing
for ascent... And expect a heavy rain shield to spread north during
the morning hours... Covering the entire forecast area by about noon
before weakening during the afternoon as the low becomes vertically
stacked and slowly pushes east. Remaining shower activity will
come to an end from west to east Friday night with low clouds
lingering as moist cyclonic flow continues.

Winds will remain from the east and northeast 10-15mph during
the day stronger at the coast ... With the strongest winds
along the coast coming early in the day.

Temperatures: a chilly day for sure with highs stuck in the 50s
given cool easterly flow. Showers and low clouds will not allow
for much cooling Friday night with temperatures only retreating
about five degrees... Back into the 40s.

Qpf: ensemble signal supports 0.5 to one inch which is well
agreed upon in the guidance consensus but represents a slight
downward trend from recent guidance support.

Long term Saturday night through Thursday
High impact weather potential: no signals for significant weather
impacts at this time. Some potential for thunder in the
Wednesday-Thursday timeframe.

Pattern: a look at water vapor imagery over the northern hemisphere
shows a pretty active pattern with longwave trough over the eastern
united states... With another trough digging south in to the northern
plains east of the rockies on the eastern flank of longwave ridging
over the eastern pacific. This amplified pattern will temporarily
relax as the eastern trough lifts north and east of our area by
Saturday. Beyond this... However... There will be a re-amplification
of the pattern across the eastern pacific and western north america
with an impressive ridge building along the us west coast by Sunday.

This will help drive the aforementioned northern plains trough south
and east... With it broadening and becoming a near stationary
longwave trough over eastern north america for much of if not all of
next week.

Pattern implications: relatively quiet for Saturday Sunday (and
perhaps into Monday) with brief shortwave ridging expected. Beyond
this... The gradually nearing longwave trough portends showery
weather... With temperatures near or above normal given our location
east of the trough axis.

The details... .

Saturday through Sunday: shortwave ridge axis moves into the region
on Saturday and remains overhead Sunday with a return to
drier milder conditions expected. Weak warm advection continues
through the period... With t8s around +5c Saturday increasing to +8c
Sunday... This suggests mid upper 60s Saturday with upper 60s to
near 70 on Sunday... Well captured by the model consensus.

Monday: with upstream shortwave broadening and nearing from the
west... There is decent model consensus in an area of low pressure
north of the great lakes pushing another occluded front into the
region from the west. At the same time... There has been some
indication from the GFS of a cold front trying to sneak it S way
south into the area from canada. Thus... High chance pops are
warranted... With temperatures a bit lower than those over the
weekend highs likely nearer to 60 with the increasing cloud
cover and precipitation chances.

Tuesday through Thursday: vertically stacked surface low will set
up shop south of james bay by Tuesday... Only very slowly moving east
while waves of mid level energy rotate around the mid level low.

These waves arrive about once every 24 hours... But given their fast
movement and small scale... Are hard to time at this range. Suffice
it to say that each afternoon will likely see some showers... And
can t rule out thunder given proximity of the mid level low... With
mucape progs showing non-negligible values especially for Wednesday
and Thursday. With continued clouds and showers... Temperatures look
to be no warmer than seasonal norms... Despite our area being east of
the mean trough location.

Aviation 04z Friday through Tuesday
Near term: clouds will thicken and lower tonight ahead of low
pressure moving northeast into the gulf of maine.VFR at the
northern terminals will lower to MVFR ifr Friday morning. Mostly
MVFR at bgr and bhb will lower to ifr overnight.

Short term: rain continues to spread north with ifr lifr
restrictions in moderate to potentially heavy rain from car pqi
south... With precipitation reaching fve around 15z on Friday.

Rain continues through Friday evening before tapering to showers
Friday evening with ifr MVFR restrictions gradually improving
toVFR Saturday morning and continuing through Sunday. Another
frontal system arrives from the west on Monday with MVFR
restrictions likely.

Near term: scas continue through tonight as easterly flow
strengthens ahead of strengthening low pressure system. Wind
gusts will near gale force in the 3-9utc timeframe... And will
have to keep an eye on this... But at the current time do not
expect sufficient gale gusts to warrant an upgrade of the

Short term: winds turn north and gradually weaken late Friday
through Friday night with scas possibly continuing through
Friday night.

Tides coastal flooding
The highest astronomical tides of the year will occur tonight with
astronomical tides remaining high through the weekend. A statement
was issued for splash-over along the hancock and washington
county coasts around the time of high tide tonight.

Car watches warnings advisories
Me... None.

Marine... Small craft advisory until 8 pm edt Friday for anz050>052.

Near term... Cb
short term...

long term...

aviation... Cb
marine... Cb
tides coastal flooding... Cb

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Caribou, Caribou Municipal Airport, ME90 mi34 minENE 410.00 miLight Rain51°F42°F71%1014.4 hPa

Wind History from CAR (wind in knots)
Last 24hrE5E3E3CalmNE4E5E6E5SE66E8SE8SE6SE9E8SE7E7SE7E7E8E6E6E7E4
1 day agoSW4SW3S3CalmCalmCalmN4NW65NW4Calm4Calm4N5NE4NE5N3N4NE5NE4NE5NE5E5
2 days agoS9S8S10S5S6S7S7SW9SW10SW8W76W6W9

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
IR Satellite Image from GEOS

GOES Local Image of Northeast    EDIT

Wind Forecast for Caribou, ME (1,6,7,8)
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Ground Weather Radar Station Caribou, ME
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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 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 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.