Saturday, April21, 2018 L-36.com


Marine Weather and Tides
Port Alexander, AK

Version 3.4
What's New / NOTES
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.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 5:23AMSunset 8:28PM Saturday April 21, 2018 7:35 AM AKDT (15:35 UTC) Moonrise 9:56AMMoonset 2:05AM Illumination 37% Phase: Waxing Crescent; Moon at 6 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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PKZ033 Southern Chatham Strait- 503 Am Akdt Sat Apr 21 2018
Today..W wind 10 kt becoming S in the morning, then increasing to 15 kt. Seas building to 3 ft in the afternoon. NEar ocean entrances, seas 7 ft.
Tonight..SE wind 15 kt. Gusts to 35 kt late. Seas 4 ft, except 7 ft near ocean entrances. Rain showers in the evening, then rain late.
Sun..SE wind 25 kt. Gusts to 40 kt. Seas 5 ft, except 9 ft near ocean entrances. Rain.
Sun night..SE wind 25 kt. Gusts to 40 kt. Seas 5 ft, except 12 ft near ocean entrances. Rain.
Mon..SE wind 25 kt becoming S 15 kt. Seas 4 ft.
Tue..S wind 25 kt. Seas 5 ft.
Wed..SW wind 15 kt. Seas 3 ft.

7 Day Forecast for Marine Location Near Port Alexander, AK
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location: 56.17, -134.67     debug


Area Discussion for -
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Fxak67 pajk 211407
afdajk
southeast alaska forecast discussion
national weather service juneau ak
607 am akdt Sat apr 21 2018

Short term Saturday to Monday surface low that moved north
through hecate strait late Friday night has moved across the
southeastern panhandle into british columbia. Rain spread north
to the east central panhandle and is now being pulled east with
the low. A weak onshore flow pattern will occur today to push
the residual shower activity from the gulf inland. A band of
showers will be moving to the coast by mid morning Saturday and
then some more wides spread showers from the east central gulf
will approach the coast. A weak trough aloft will assist a weak
surface through as it moves onshore.

A mid 980 mb low will move northeast into the gulf to be south of
kodiak island by Sunday morning. The associated frontal band will
spread gale force winds to the coastal zones on Sunday and the
rain with it will begin to impact the coastal areas by Sunday
morning. A developing wave on the frontal band south of the gulf
is slowing the eastward progression down so that front is still
trying to move through the central panhandle Monday morning. A
second wave looks like will move into the southern panhandle
around midday Monday.

Modification to the grids where needed have a stronger GFS bias
however NAM was fairly usable, and biggest impact was to the sky
and pops portion of the forecast for Saturday morning. Only minor
changes to the wind forecast, through the weekend.

Long term Monday through Saturday as of 10 pm Friday upper
trof will move NE across the area mon-tue. Another trof will
amplify over the n-central pac into the E bering sea. Ridging will
build downstream over western canada. Models have trended toward
a stronger ridge, and this will likely have an effect on a system
moving toward the area for late Tue into early thu. Still some
important model differences to work out for this system and any
following systems later in the week. Ended up basically staying
with current forecast in long range, waiting to see if we get
better agreement especially on tue-wed system.

Occluded front will be moving slowly E across the area Mon and mon
night. Looking like most precip with this front will fall over the
nw half of the area. May have some gale force winds over the ne
gulf early Mon but front will be weakening. Weak trof should move
in behind the front tue.

Following occluded front appears to be weaker and holding up
further W in latest model runs, but models have been inconsistent
with it. Big problem seems to be how strong ridging builds over
and E of the area. If the current models maintain the stronger
ridge idea, later shifts may need to keep the front further w
along with the stronger winds and precip. After Wed night,
forecast confidence drops off even more as the model differences
only increase. Overall, looking more like the southern panhandle
will not get as much rain as previously thought, which may not
alleviate the abnormally dry conditions there.

Aviation Localize dense fog this morning across chichagof
island to glacier bay is reducing visibility, and low clouds have
some ceilings under a 1000 feet from frederick sound to glacier
bay. Expect fog and ceilings to lift through midday with ceiling
expected in the 3000 to 5000 ft range across the panhandle.

Conditions will deteriorate by Sunday morning.

Ajk watches warnings advisories
Public... Dense fog advisory until 8 am akdt this morning for akz020-021.

Marine... Gale warning for pkz052.

Small craft advisory for pkz041>043-051.

Bezenek rwt
visit us at http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PLXA2 - 9451054 - Port Alexander, AK 5 mi54 min NW 1.9 G 2.9 37°F 44°F1012.6 hPa
CDXA2 31 mi44 min SSW 6 G 7 42°F 1012.7 hPa35°F
FFIA2 - Five Finger, AK 94 mi36 min S 11 G 11 38°F 1012.3 hPa (+3.0)

Wind History for Port Alexander, AK
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from AAP (wind in knots)
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Last 24hr--1--NW15
G20
--N15
G25
------------------------------Calm--2
1 day ago--1--1----------------------------------NE15
G25
--NE10
G15
2 days ago--W5--N5--4------------------------------Calm--E1

Tide / Current Tables for Cape Ommaney, Baranof Island, Alaska
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Cape Ommaney
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Sat -- 02:04 AM AKDT     Moonset
Sat -- 04:41 AM AKDT     10.04 feet High Tide
Sat -- 05:37 AM AKDT     Sunrise
Sat -- 09:56 AM AKDT     Moonrise
Sat -- 11:44 AM AKDT     -0.36 feet Low Tide
Sat -- 06:21 PM AKDT     7.93 feet High Tide
Sat -- 08:18 PM AKDT     Sunset
Sat -- 11:47 PM AKDT     3.89 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
45.47.18.79.8109.27.65.43.11.1-0.1-0.30.423.95.87.27.97.875.94.94.1

Tide / Current Tables for Port Alexander, Baranof Island, Alaska
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Port Alexander
Click for Map
Sat -- 02:04 AM AKDT     Moonset
Sat -- 04:52 AM AKDT     11.27 feet High Tide
Sat -- 05:36 AM AKDT     Sunrise
Sat -- 09:56 AM AKDT     Moonrise
Sat -- 11:45 AM AKDT     -0.57 feet Low Tide
Sat -- 06:31 PM AKDT     9.30 feet High Tide
Sat -- 08:18 PM AKDT     Sunset
Sat -- 11:50 PM AKDT     3.73 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.95.57.59.510.811.310.58.76.23.51.2-0.2-0.50.324.36.58.29.29.28.36.85.24.1

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 (11,2,3,4)
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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.