Friday, July21, 2017 L-36.com


Marine Weather and Tides
Port Alexander, AK

Version 3.4
What's New / NOTES
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.
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 4:27AMSunset 9:41PM Friday July 21, 2017 2:51 PM AKDT (22:51 UTC) Moonrise 3:04AMMoonset 7:56PM Illumination 3% Phase: Waning Crescent; Moon at 28 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- 743 Am Akdt Fri Jul 21 2017
Today..SE wind increasing to 20 kt in the afternoon. Seas 4 ft. Rain in the afternoon.
Tonight..E wind 20 kt. Seas 4 ft. Rain.
Sat..S wind 15 kt. Seas 3 ft. Rain in the morning.
Sat night..S wind 10 kt. Seas 2 ft or less, except 5 ft near ocean entrances.
Sun..S wind 10 kt. Seas 2 ft or less.
Mon..Light winds becoming S 10 kt. Seas 2 ft or less then 2 ft or less.
Tue..S wind 10 kt. Seas 2 ft or less.

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 212206
afdajk
southeast alaska forecast discussion
national weather service juneau ak
206 pm akdt Fri jul 21 2017

Synopsis A high pressure ridge over the panhandle will slowly
weaken through Friday evening as an upper level low moves across
the southern gulf. A frontal band will move into the southern gulf
and southern panhandle on Friday then track northward over the
rest of the panhandle on Saturday. Showers diminish Sunday with
fair but cloudy weather expected through the first half of next
week.

Short term tonight through Saturday night satellite imagery
and surface analysis indicate a surface low near 53n 145w with
the first in a pair of frontal bands moving into the southern
panhandle early this afternoon. This band will push into the
central panhandle this evening before dissipating as energy
becomes absorbed into the second frontal band approaching this
evening overnight. The first band will bring the stronger winds
with 30kt over the southern SE gulf and SCA winds over pkz036
tonight. Little break in precip over the S panhandle as the
second band will push into the region shortly after the first band
moves n, but winds will diminish tonight. Seas will remain at or
above 8 ft in the E gulf Sat before subsiding Sat evening. This
second band will bring precip further n, moving into juneau area
early Sat morning and expanding N to haines and skagway by late
morning early afternoon. Precip will transition to showers behind
this band with stratiform precip diminishing by Sat night. Other
area of concern remains the potential for thunderstorms as the
upper low drifts across the S panhandle Sat afternoon. Modeled
instability indices continue to support mention of schc TS sat
afternoon over the SE gulf and southern panhandle. Model solutions
in good agreement and inherited forecast represented this thinking
well. Only minor changes made to reflect current conditions and
for local effects. Overall forecast confidence remains above
average.

Long term Sunday through Friday as of 10 pm Thursday
Sunday will begin with showers diminishing across the panhandle
associated with the remnants of a weather front. Showers will
likely end by the afternoon hours for most of the panhandle. As
the front diminishes a surface ridge of high pressure builds over
the eastern gulf and panhandle and persists through most of the
week. Winds over the gulf will be relatively light and westerly,
while the inner channels will become more southerly. Significant
winds are not expected beyond the possibility of small craft level
winds in northern lynn canal and cross sound. While this weather
pattern will keep conditions cloudy for most of the panhandle,
chances of precipitation remain low in the extended forecast.

Most significant changes in the extended forecast were made
Sunday diminishing the shower activity across the panhandle faster
than originally forecasted. This follows the trend models have
had for the past few days of speeding up this system. In addition,
the ridge over the northern panhandle was intensified which lead
to an increase in winds within lynn canal and haines and skagway
area. Forecast confidence is average in the long term with a blend
of the NAM and GFS being used to handle Sunday and Monday and wpc
being the primary guidance Tuesday and beyond.

Ajk watches warnings advisories
Public... None.

Marine... Small craft advisory for pkz036-041>043.

Small craft advisory due to seas for pkz051-052.

Bc byrd
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 mi52 min N 5.1 G 8.9 53°F 51°F1012.6 hPa (+0.0)
CDEA2 - Cape Decision, AK 31 mi90 min ENE 17 G 29
FFIA2 - Five Finger, AK 94 mi52 min NNE 5.1 G 7 56°F 1013.3 hPa (-0.4)

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
Click for Map
Fri -- 03:04 AM AKDT     Moonrise
Fri -- 04:42 AM AKDT     Sunrise
Fri -- 05:50 AM AKDT     -1.64 feet Low Tide
Fri -- 12:15 PM AKDT     8.39 feet High Tide
Fri -- 05:41 PM AKDT     2.60 feet Low Tide
Fri -- 07:55 PM AKDT     Moonset
Fri -- 09:26 PM AKDT     Sunset
Fri -- 11:43 PM AKDT     11.27 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
108.15.62.80.4-1.2-1.6-0.813.45.87.58.48.175.53.92.82.73.55.27.49.510.9

Tide / Current Tables for Port Alexander, Baranof Island, Alaska
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Port Alexander
Click for Map
Fri -- 03:04 AM AKDT     Moonrise
Fri -- 04:42 AM AKDT     Sunrise
Fri -- 05:50 AM AKDT     -1.89 feet Low Tide
Fri -- 12:25 PM AKDT     9.74 feet High Tide
Fri -- 05:43 PM AKDT     2.42 feet Low Tide
Fri -- 07:55 PM AKDT     Moonset
Fri -- 09:26 PM AKDT     Sunset
Fri -- 11:53 PM AKDT     12.52 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
11.49.46.53.30.5-1.4-1.9-11.13.76.48.59.69.58.26.24.22.82.53.45.37.810.212

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 (18,4,5,8)
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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.