Saturday, August17, 2019 L-36.com


Marine Weather and Tides
Skagway, AK

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 6:14AMSunset 9:54PM Saturday August 17, 2019 7:34 PM PDT (02:34 UTC) Moonrise 8:49PMMoonset 6:36AM Illumination 94% 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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PKZ012 Northern Lynn Canal- 300 Pm Akdt Sat Aug 17 2019
.storm warning late tonight...
Tonight..N wind 35 kt increasing to 50 kt late. Seas building to 10 ft.
Sun..N wind 35 kt diminishing to 25 kt in the afternoon. Gusts to 50 kt in the morning. Seas 7 ft.
Sun night..N wind 20 kt. Seas 4 ft.
Mon..N wind 20 kt. Seas 4 ft.
Mon night..N wind 15 kt. Seas 3 ft.
Tue..N wind 25 kt. Seas 5 ft.
Wed..S wind 15 kt. Seas 3 ft.
Thu..S wind 10 kt. Seas 2 ft or less.


7 Day Forecast for Marine Location Near Skagway, AK
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location: 59.45, -135.3     debug


Area Discussion for -
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Fxak67 pajk 172235
afdajk
southeast alaska forecast discussion
national weather service juneau ak
235 pm akdt Sat aug 17 2019

Short term Current satellite gives a fairly good depiction of
the low pressure system currently moving along the southern coast
of the panhandle. Rain has been a bit heavier than previously
forecast with some areas reporting in excess of an inch, mainly
between the far eastern inner channels and the coastal mountain
range. This will continue to be the focus for highest precip
totals as the low continues it's trek to the south. Satellite also
gives a pretty good look at an area of scattering out clearing
behind the furthest north boundary of the precipitation, further
evidenced by observations at paya, pagy, and pahn. Expect this
trend to continue going into the late afternoon where pajn may get
an opportunity to see at least some Sun late in the day.

Regardless of the precipitation, the main feature of this system
will be the wind. As the low moves north, it will continue to
deepen which will cause a sharp increase in the pressure gradient.

Winds through the north-south oriented channels, where they
haven't already will begin to swing around to the north and begin
to become quite strong. This is already bringing high sca
criteria to lynn canal where winds tonight will increase briefly
to storm force criteria. Winds will continue to increase through
the night in a multitude of other channels as well with gale force
winds expected through frederick sound and chatham strait and all
other waterways north. Gale force winds are also anticipated along
the coastal waters tonight.

On Sunday, expect these winds to slow down but still continue to
be at SCA into the afternoon. Most locations fall below advisory
criteria before evening with these higher winds holding on the
longest through lynn canal.

Aside from the more impactful weather, temperatures will also
become noticeably cooler from the above normal days we have seen
in the past couple of weeks. Also, despite being breezy in some
areas, most should get a pretty nice Sunday with sunny conditions,
mainly through the north and central panhandle.

Long term Monday through Saturday as of 10 pm Friday
upper trof will be deepening over the gulf and NE pacific at start
of the period. A southern stream shortwave will also come into
play, but the models differ on the timing of this feature moving
ne. This is affecting whether the northern stream trof phases with
the southern stream shortwave, and potential for a significant
low that could move into the eastern gulf around tue. A vast
majority of the 12z GFS ensembles suggest there will be a
significant low moving into the eastern gulf (with some
timing strength differences noted) Tue or Tue night. The position
of the main upper trof W of 140w also supports a system moving
into the eastern gulf. For this reason, decided to introduce a
developing low moving nne into the eastern gulf for tue-tue
night forecast periods. For the mon-mon night periods, used blend
of gfs ECMWF to handle things as they were fairly close. After
wed, decided to leave things as is due to increasing model
differences out that far, and current forecast looks reasonable at
that time frame.

Have brought in a period of gale force winds to the SE gulf tue
into Tue night, with gales possible on back side of the low over
the central gulf as it reaches peak intensity. Inner channel winds
could potentially get to gale force as well. Could be a
significant rain event, especially across the southern half of the
area, based on a forecasted low track into the n-central
panhandle. After this system moves out, next system looks like it
will move in from the SW for late week, but model differences with
it make for a low confidence forecast.

Ajk watches warnings advisories
Public... Strong wind through Sunday morning for akz025.

High wind warning from 7 pm this evening to 6 am akdt Sunday for
akz019.

Strong wind from 7 pm akdt this evening through late tonight for
akz021.

Strong wind until 1 am akdt Sunday for akz018.

Strong wind from late tonight through Sunday afternoon for
akz018.

Marine... Storm warning for pkz012-013.

Gale warning for pkz021-022-031>034-042-043-051.

Small craft advisory for pkz011-035-041-053.

Jdr rwt
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SKTA2 - 9452400 - Skagway, AK 1 mi52 min 66°F 53°F1012.9 hPa
SKXA2 1 mi21 min N 21 G 30 63°F 1013.1 hPa35°F
HAXA2 17 mi22 min WSW 5.1 G 13 63°F 1011.7 hPa28°F
EROA2 - Eldred Rock, AK 33 mi70 min N 28 G 39 64°F 1007.7 hPa37°F
ERXA2 33 mi22 min N 32 G 43 64°F 1006 hPa33°F
PRTA2 - Point Retreat, AK 74 mi24 min N 17 G 29 62°F 1006.1 hPa38°F

Wind History for Juneau, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Skagway, AK2 mi1.7 hrsNNE 15 G 2810.00 miOvercast66°F30°F26%1012.3 hPa
Haines - Haines Airport, AK18 mi1.7 hrsWNW 10 G 1910.00 miOvercast64°F34°F33%1011.6 hPa

Link to 5 minute data for PAGY

Wind History from AGY (wind in knots)
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Last 24hr--S14
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SW13S15SW13
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--S8--SW9W4CalmCalm------Calm--N3--NE22
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1 day agoSW15SW12
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SW11CalmCalmCalmCalmCalmNE3NE5--Calm------CalmSW3SW5SW6SW13
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Tide / Current Tables for Skagway, Alaska (2)
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Skagway
Click for Map
Sat -- 02:46 AM AKDT     17.13 feet High Tide
Sat -- 05:22 AM AKDT     Sunrise
Sat -- 07:37 AM AKDT     Moonset
Sat -- 09:06 AM AKDT     -1.35 feet Low Tide
Sat -- 03:29 PM AKDT     16.28 feet High Tide
Sat -- 08:46 PM AKDT     Sunset
Sat -- 09:18 PM AKDT     1.66 feet Low Tide
Sat -- 09:49 PM AKDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.714.216.517.115.612.483.50.1-1.3-0.42.56.610.814.2161614.110.86.83.51.82.24.6

Tide / Current Tables for Haines Inlet, Alaska
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Haines Inlet
Click for Map
Sat -- 02:36 AM AKDT     17.23 feet High Tide
Sat -- 05:24 AM AKDT     Sunrise
Sat -- 07:38 AM AKDT     Moonset
Sat -- 08:57 AM AKDT     -1.35 feet Low Tide
Sat -- 03:19 PM AKDT     16.38 feet High Tide
Sat -- 08:45 PM AKDT     Sunset
Sat -- 09:09 PM AKDT     1.66 feet Low Tide
Sat -- 09:49 PM AKDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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11.314.816.917.115.311.87.32.9-0.3-1.3-0.13.17.311.514.716.315.913.710.26.33.11.72.45.1

Weather Map and Satellite Images
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wmap_P
GOES Local Image of PacificNorthwest    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 (22,6,7,8)
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Ground Weather Radar Station Biorka Is., AK
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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.