Monday, May20, 2019 L-36.com


Marine Weather and Tides
Old Orchard Beach, 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 5:10AMSunset 8:06PM Monday May 20, 2019 10:23 AM EDT (14:23 UTC) Moonrise 10:03PMMoonset 6:38AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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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ANZ154 Coastal Waters From Cape Elizabeth, Me To Merrimack River, Ma Out 25 Nm- 907 Am Edt Mon May 20 2019
.small craft advisory in effect through late tonight...
Rest of today..S winds around 15 kt. Seas 3 to 5 ft. A slight chance of showers late this morning, then a chance of showers and tstms this afternoon. Some tstms may be severe with damaging winds and large hail.
Tonight..W winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers and tstms in the evening. Some tstms may be severe with damaging winds and large hail.
Tue..W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft.
Tue night..NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 3 ft.
Wed..N winds 10 to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft.
Wed night..NW winds 5 to 10 kt. Seas 1 foot or less.
Thu..SE winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft.
Thu night..S winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers.
Fri..S winds 5 to 10 kt. Seas 4 to 7 ft.
Fri night..SW winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Winds and seas higher in and near tstms.
ANZ100 907 Am Edt Mon May 20 2019
Synopsis for stonington me to merrimack river ma out to 25 nm.. Potent low pressure will move north of the waters today, dragging a cold front through the waters tonight. Gusty northwesterly winds are expected on Tuesday as high pressure gradually builds in from the west through midweek. &&


7 Day Forecast for Marine Location Near Old Orchard Beach, ME
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location: 43.5, -70.38     debug


Area Discussion for - Gray/Portland, ME
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Fxus61 kgyx 201306
afdgyx
area forecast discussion
national weather service gray me
906 am edt Mon may 20 2019

Synopsis
A warm front will move north of our region today. Increasingly
warm and humid air moves into the area today. A cold front
moving into the region late today will bring showers and
thunderstorms, some possibly severe, to the area before much
cooler and drier air works back into new hampshire and western
maine for midweek. Another area of low pressure crosses the
region Thursday night into early Friday.

Near term today
9am update...

have made updates to the forecast to refine hourly precipitation
chances based on early morning observations and relying on the
latest hrrr model guidance. Band of showers will exit east this
morning while a new round of showers and storms is expected to
form over ny and vt and move into nh around or shortly after
noon. With the combination of instability and shear available
today, these storms will be capable of large hail and damaging
winds as they move across the area. Latest guidance suggests
this may not be a solid line of storms, but more isolated storms
or clusters. It is now expected to move offshore and out of the
forecast area by mid afternoon to early evening.

630am update...

have updated for current conditions as latest band of
precipitation moves across the forecast area. Areas of fog with
the showers this morning, followed by gradual clearing and
another round of strong to severe storms this afternoon.

Areas of northern new hampshire and the foothills of maine
received locally over an inch of rain last night. This area will
need to be monitored today for additional rainfall.

Original discussion...

interesting day on tap with ongoing scattered showers and
thunderstorms this morning. With a strong west southwesterly
flow aloft, the atmosphere should have time to recharge ahead of
an advancing cold front and short wave trough this afternoon.

Showers and thunderstorms should be more widespread with this
feature as it sweeps across the region and moves offshore around
00z or 01z.

Winds will be well aligned and strong throughout a deep layer
today. Atmosphere dynamics and mesoscale models suggest line
segments will develop with the convection this afternoon, as
well as individual cells, with a couple possibly indicating
supercell characteristics. This will lead to the possibility of
damaging winds and hail in a few storms this afternoon into this
early evening, aided by strong speed shear, and increasing cape
values due to steep low and mid level lapse rates. Surface
temperatures will assist in helping to fuel the storms with
readings in the 70s to 80s and dew point values in the 60s. The
hrrr is on the high end of the dew point forecast spectrum for
this package.

The convection will be progressive in nature. However if line
segments and individual cells train in few locations, high pw
values may lead to locally heavy rainfall which cannot be
discounted.

Short term tonight and Tuesday
Convection and deep moisture will be swept off the coast this
evening as cyclogensis continues north of our forecast area.

An upper level low will allow for steep lapse rates and showers
over northern areas tomorrow. Less cloudiness and somewhat drier
in the downslope regions where temperatures will reach the 60s
even along the coast in the absence of a sea breeze.

Winds will be increasingly well aligned through a deep layer
embedded in a cold air advection pattern. Expect very gusty
conditions during the day.

Long term Tuesday night through Sunday
Ensemble and deterministic model solutions are in good agreement
on the long wave pattern through late in the upcoming weekend.

We begin the period with an upper trough closed low over the
western CONUS and a building ridge downstream over the southeastern
conus. While the ridge may briefly build across the area at times... The
real heat and humidity remains to our south as passing shortwave
impulses riding along the periphery of the ridge have a tendency
to flatten it. With the mean jet position nearby... We'll see quick
day to day changes in the sensible weather as weak systems cross
the region. For a change temperatures will be close or slightly
above normal for the period as cold air remains bottled up well
to our north.

Aviation 13z Monday through Friday
Short term... Areas of ifr conditions in low clouds and fog,
mainly over eastern areas this morning. Conditions gradually
improving to MVFR with localizedVFR however there will still be
scattered showers and thunderstorms this morning. Showers and
storms become more widespread with strong to severe conditions
possible. Conditions slowly improve tonight and Tuesday with a
wind shift.

Long term...

thu night - fri... Areas of MVFR in -shra.

Marine
Short term... Scas to continue today and tonight as winds gust to
25 knots at times over the outer waters and seas reach 3 to 6
feet.

Long term...

wed... Sca's psb outside the bays.

Gyx watches warnings advisories
Me... None.

Nh... None.

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

Near term update... Kimble
short term... Cannon
long term... Schwibs


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44007 - PORTLAND 12 NM Southeast of Portland,ME 13 mi34 min ESE 1.9 G 3.9 49°F 48°F3 ft1007.4 hPa (-0.5)49°F
CASM1 - 8418150 - Portland, ME 13 mi36 min 53°F 48°F
WEXM1 - Wells Reserve, ME 14 mi84 min Calm 57°F 57°F
BGXN3 - Great Bay Reserve, NH 39 mi99 min W 1.9 68°F 1009 hPa65°F
IOSN3 - Isle of Shoals, NH 39 mi84 min SSW 16 G 17 65°F 1007.5 hPa (+0.8)63°F

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Portland, Portland International Jetport, ME12 mi33 minS 34.00 miFog/Mist55°F54°F96%1007.5 hPa
Sanford, Sanford Regional Airport, ME18 mi28 minS 49.00 miFair65°F62°F90%1007.8 hPa

Wind History from PWM (wind in knots)
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S10S11SE5CalmNE7E4E5N3NE5CalmNW3CalmCalmE4SE3CalmCalmS3
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N8S10S6S4S6SW3S6S3CalmW3E3CalmCalmSE3E4SE9S9S10
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G21
NW17
G25

Tide / Current Tables for Old Orchard Beach, Maine
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Old Orchard Beach
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Mon -- 12:33 AM EDT     10.69 feet High Tide
Mon -- 05:12 AM EDT     Sunrise
Mon -- 06:37 AM EDT     Moonset
Mon -- 06:50 AM EDT     -1.01 feet Low Tide
Mon -- 01:11 PM EDT     9.50 feet High Tide
Mon -- 06:59 PM EDT     0.28 feet Low Tide
Mon -- 08:04 PM EDT     Sunset
Mon -- 10:02 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.510.69.36.93.91.2-0.5-1-0.11.84.56.98.79.59.17.55.12.60.90.30.92.65.17.6

Tide / Current Tables for Richmond Island, Maine
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Richmond Island
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Mon -- 12:30 AM EDT     10.80 feet High Tide
Mon -- 05:11 AM EDT     Sunrise
Mon -- 06:37 AM EDT     Moonset
Mon -- 06:53 AM EDT     -1.02 feet Low Tide
Mon -- 01:08 PM EDT     9.60 feet High Tide
Mon -- 07:02 PM EDT     0.29 feet Low Tide
Mon -- 08:04 PM EDT     Sunset
Mon -- 10:02 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.610.69.46.941.3-0.5-1-0.21.84.578.89.69.27.55.12.70.90.30.92.65.27.7

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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Wind Forecast for Gray/Portland, ME (10,2,3,4)
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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.