Tuesday, June27, 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 3:51AMSunset 10:10PM Tuesday June 27, 2017 9:32 AM AKDT (17:32 UTC) Moonrise 9:07AMMoonset 12:00AM Illumination 14% Phase: Waxing Crescent; Moon at 4 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- 321 Am Akdt Tue Jun 27 2017
Today..NW wind 15 kt becoming sw in the afternoon. Seas 3 ft.
Tonight..S wind 15 kt. Seas 3 ft.
Wed..S wind 10 kt. Seas 2 ft or less, except 5 ft near ocean entrances.
Wed night..S wind 10 kt. Seas 2 ft or less, except 5 ft near ocean entrances.
Thu..S wind 10 kt. Seas 2 ft or less.
Fri..S wind 10 kt. Seas 2 ft or less.
Sat..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 271201
afdajk
southeast alaska forecast discussion
national weather service juneau ak
401 am akdt Tue jun 27 2017

Short term Upper ridge will sharpen up over the far E gulf
today then push onshore tonight. Weak shortwave trof will move ne
across the N gulf and NE gulf coast this afternoon and tonight. A
weak occluded front will move into the SW gulf today, then stall
there as low pressure develops and moves N to the SW gulf by wed
night. For the most part, current forecast was still looking
reasonable, although did make some tweaks based on current
conditions and model trends.

Main forecast concerns will be precip potential, cloud cover, and
winds. With upper ridge sharpening up over the far E gulf, the
shower activity over the panhandle will decrease today. However,
along the NE gulf coast, will see an increase in precip threat
late this afternoon and tonight as weak shortwave moves in. Have
pops rising to categorical by early this evening in the NE gulf
coast area. This shortwave will also increase precip threat over
the N panhandle tonight, but pops will generally remain at chance
levels or less over the N area. After shortwave moves by the area
wed, precip threat will decrease again along the NE gulf coast
and N panhandle. The S half will see showers diminish in coverage
through this evening, with the most coverage remaining along the
coast mtns.

Cloud forecast is a bit trickier as it will depend on how much
moisture remains trapped under subsidence inversion especially
over the far se. Think the N and central areas will keep enough
moisture trapped under the inversion for stratus or stratocu to
persist, although a few small breaks may occur late in the
afternoon as low level heating could cause shallow cumulus to
form. This cumulus should flatten out to stratocu this evening
once temps begin to cool. Going with mostly cloudy to cloudy skies
for the N and central areas through wed. Over the far SE part of
the area, the stratus stratocu layer appears to be thinner, so
some cumulus formation there could allow for larger breaks in the
lower clouds. There will be some mid-level clouds moving through
the area in warm advection pattern ahead of building ridge this
morning, but these clouds should diminish this afternoon and
tonight as ridge axis pushes onshore. Am going with mostly cloudy
for the far se, but short duration of partly cloudy could occur
late this afternoon.

As for winds, low level ridging offshore is causing a SCA level tip
jet near CAPE spencer, and a lesser jet near CAPE decision. As
low level ridge moves onshore today, these jets should weaken. For
the N inner channels, moderate strength southerly pressure
gradient will remain into tonight, with some diurnal enhancement
during the afternoon and early evening. Going with SCA level s
winds during the afternoon and evening hours for N lynn canal,
with 15-20 kt for S lynn canal. Over the gulf, SCA level winds
will be likely over the SW part of the offshore waters tonight
and wed, with SCA possible in the far NW part of the gulf coastal
marine area wed. This is being caused by approach of occluded front
from the SW through tonight and developing low moving N toward the
sw gulf Wed and Wed night.

Long term Friday through Tuesday... As of 1000 pm mon... An
upper level ridge located east of the southeastern alaska region
with an associated surface high pressure will remain over the
area, influencing conditions for Friday into Saturday. Deep layer
onshore flow and plenty of moisture will fuel a sustained cloud
low level deck. Multiple shortwave troughs will then progress east
out of the gulf, originating from a broad area of low pressure
located over the central gulf, impacting the region through this
weekend. Long range models are in general agreement for
accumulating amounts of precipitation through this weekend into
Monday. As the systems make their approach, timing of
precipitation will become clearer. Pops were analyzed using mainly
the GFS model ensemble and then trended more with wpc guidance.

Pressure and wind updates blended towards GFS through Friday, then
towards wpc through the remainder of the long range period.

Overall confidence is average.

Ajk watches warnings advisories
Public... None.

Marine... Small craft advisory for pkz012-022-041>043.

Small craft advisory due to seas for pkz052.

Rwt fritsch voveris
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 mi50 min SSW 4.1 G 6 55°F 49°F1022.6 hPa
CDEA2 - Cape Decision, AK 31 mi130 min WNW 18 G 26
FFIA2 - Five Finger, AK 94 mi32 min SSE 1.9 G 4.1 50°F 1021.6 hPa (+0.3)

Wind History for Port Alexander, AK
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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
Tue -- 03:14 AM AKDT     10.74 feet High Tide
Tue -- 04:13 AM AKDT     Sunrise
Tue -- 09:06 AM AKDT     Moonrise
Tue -- 10:01 AM AKDT     -2.19 feet Low Tide
Tue -- 04:32 PM AKDT     9.45 feet High Tide
Tue -- 09:50 PM AKDT     Sunset
Tue -- 10:18 PM AKDT     2.23 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.67.99.810.710.48.86.23.20.5-1.5-2.2-1.50.435.889.39.38.36.64.73.12.32.5

Tide / Current Tables for Port Alexander, Baranof Island, Alaska
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Port Alexander
Click for Map
Tue -- 03:25 AM AKDT     12.09 feet High Tide
Tue -- 04:12 AM AKDT     Sunrise
Tue -- 09:06 AM AKDT     Moonrise
Tue -- 10:04 AM AKDT     -2.27 feet Low Tide
Tue -- 04:44 PM AKDT     10.86 feet High Tide
Tue -- 09:50 PM AKDT     Sunset
Tue -- 10:21 PM AKDT     2.23 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.98.510.71211.810.27.54.10.9-1.4-2.3-1.60.43.26.38.910.510.89.87.85.43.42.32.5

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 (13,3,4,5)
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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.