Sunday, April23, 2017 L-36.com


Marine Weather and Tides
Angoon, AK

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 5:17AMSunset 8:33PM Sunday April 23, 2017 11:53 AM AKDT (19:53 UTC) Moonrise 4:56AMMoonset 4:37PM Illumination 6% Phase: Waning Crescent; Moon at 27 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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PKZ034 Frederick Sound- 320 Am Akdt Sun Apr 23 2017
Today..NE wind 15 kt. Seas 3 ft.
Tonight..E wind 10 kt. Seas 2 ft or less.
Mon..E wind 10 kt. Seas 2 ft or less.
Mon night..E wind 10 kt. Seas 2 ft or less.
Tue..NE wind 10 kt. Seas 2 ft or less.
Wed..Light winds becoming se 10 kt. Seas 2 ft or less.
Thu..S wind 15 kt. Seas 3 ft.

7 Day Forecast for Marine Location Near Angoon, AK
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location: 57.31, -134.13     debug


Area Discussion for -
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Fxak67 pajk 231319 cca
afdajk
southeast alaska forecast discussion... Corrected
national weather service juneau ak
519 am akdt Sun apr 23 2017

Synopsis A weak front will bring a chance of precipitation to
se ak this afternoon into Mon as high pressure over canada
weakens. Upper level pattern becomes more onshore by mid week with
cooler temperatures and increased chances of precipitation for the
latter half of the week.

Short term Sunday through Mon night... Surface analysis and
satellite imagery depict a weak surface low W of haida gwaii early
this morning with a stronger low over the SW gulf. Models in good
agreement with the eastern low filling as it drifts nw. This will
push a weak surface front/trough into the southern panhandle this
afternoon and progress N overnight into mon. The result will be
increased sky cover across the region with a chance of rain
increasing from S to n. Although naefs continues to prog temps 1-2
standard deviations above normal, increased sky cover will result
in temps a few degrees cooler than sat. This trend continues mon
as flow begins to shift more onshore in response to upper ridge
over W canada becoming less negatively tilted.

Nam/ecmwf used for minimal changes with continued good forecast
confidence.

Long term /Tuesday morning through Saturday/ there is not much
change in the overall synoptic pattern through next week. The
polar jet will remain over the central pacific and this will keep
the storm track south of the forecast area through mid week. There
will be a stronger low pressure system that will lift north out
of the north pacific on Wednesday and move into the eastern gulf.

There are some differences with the track of this low but the
latest few model runs seem to be picking up on this feature. As
the low slowly lifts northeast through Thursday the threat of
precip will increase for the southern half of the forecast area.

The northern areas right now will see a chance of rain. For late
week into the early next weekend there is increased onshore flow
from the southwest and with that a chance of rain with cloudy
skies seems likely.

Wind wise... The inner channels will see relatively light winds
from the north through Wednesday night with weak northernly
pressure gradient. As the low moves into the eastern gulf winds
will increase to 20 kt over marine waters with 15 mph over land
from fredrick sound south. The winds will come around to the
south late in the week as a ridge builds over the northern panhandle
as the low moves into canada on Friday.

Overall there is average forecaster confidence for Tuesday and
Wednesday but lower confidence after that due to the differences
with the low moving out of the north pacific and spread in the
ensembles. Changes in the long term were modified using the 00z
nam and 12z ec through day 4 then wpc for late in the week into
the weekend.

Marine Sely swell will continue to subside today with small
craft for seas diminishing from se-nw over the gulf today.

Over the inside, the strongest gradient will remain over the n
channels today with 20 kt expected for N lynn and cross sound this
morning before diminishing this afternoon. Weaker gradient
expected Mon as front weakens over the western gulf and high
pressure across northwest canada subsides. This will result in
diurnally driven winds remaining below 20 kt mon.

Ajk watches/warnings/advisories
Public... None.

Marine... Small craft advisory due to seas for pkz041>043-051-052.

Bc/abj
visit us at http://

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FFIA2 - Five Finger, AK 27 mi53 min SW 1.9 G 1.9 46°F 1006.6 hPa (+0.5)
SDIA2 - South Douglas, AK 68 mi43 min S 6 G 6 56°F 1005.8 hPa36°F

Wind History for Juneau, AK
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kake, Kake Airport, AK25 mi57 minSW 410.00 mi51°F34°F52%1008.5 hPa

Wind History from AFE (wind in knots)
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Last 24hrW9W7W8W8W9W7W7W6NE6--CalmCalmE5CalmCalmCalm3CalmNE4E4Calm--S3W3
1 day agoE6S5SE9SE9E5SE9E8SE5NE3NE7NE7NE8NE9
G15
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--E7----W3W8Calm
2 days ago------W5W5SW4CalmCalm--CalmNE5E3CalmE6CalmE4Calm--E5E6E6E7E5SE7

Tide / Current Tables for Cannery Cove, Pybus Bay, Frederick Sound, Alaska
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Cannery Cove
Click for Map
Sun -- 04:56 AM AKDT     Moonrise
Sun -- 05:25 AM AKDT     Sunrise
Sun -- 05:34 AM AKDT     1.66 feet Low Tide
Sun -- 11:34 AM AKDT     13.63 feet High Tide
Sun -- 04:36 PM AKDT     Moonset
Sun -- 05:46 PM AKDT     0.47 feet Low Tide
Sun -- 08:25 PM AKDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
13.311.89.36.33.61.91.83.369.111.813.413.512.19.46.13.110.51.84.68.111.413.9

Tide / Current Tables for Eliza Harbor, Admiralty Island, Frederick Sound, Alaska
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Eliza Harbor
Click for Map
Sun -- 04:56 AM AKDT     Moonrise
Sun -- 05:26 AM AKDT     Sunrise
Sun -- 05:36 AM AKDT     1.62 feet Low Tide
Sun -- 11:36 AM AKDT     13.17 feet High Tide
Sun -- 04:37 PM AKDT     Moonset
Sun -- 05:48 PM AKDT     0.46 feet Low Tide
Sun -- 08:25 PM AKDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
12.911.59.16.23.61.91.73.25.78.711.312.913.111.79.263.110.51.74.47.71113.3

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for (15,3,4,5)
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Ground Weather Radar Station Biorka Is., AK
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weather_mapweather_map weather_map

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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.