Friday, May26, 2017

Marine Weather and Tides
Covenant Life, AK

Version 3.4
What's New / NOTES
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 4:06AMSunset 9:42PM Thursday May 25, 2017 11:23 PM AKDT (07:23 UTC) Moonrise 4:04AMMoonset 8:33PM Illumination 1% Phase: New Moon; Moon at 1 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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PKZ011 Glacier Bay- 538 Pm Akdt Thu May 25 2017
Tonight..S wind 15 kt diminishing in the evening. Seas 3 ft. Periods of light rain in the evening.
Fri..S wind 10 kt. Seas 2 ft or less.
Fri night..S wind 10 kt in the evening becoming light. Seas 2 ft or less.
Sat..S wind 15 kt. Seas 3 ft.
Sat night..S wind 15 kt. Seas 3 ft.
Sun..S wind 15 kt. Seas 3 ft.
Mon..S wind 10 kt. Seas 2 ft or less.
Tue..S wind 10 kt. Seas 2 ft or less.

7 Day Forecast for Marine Location Near Covenant Life, AK
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location: 58.88, -136.57     debug

Area Discussion for -
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Fxak67 pajk 252231
southeast alaska forecast discussion
national weather service juneau ak
231 pm akdt Thu may 25 2017

Synopsis A ridge of high pressure persists over the eastern
gulf through Saturday. A weak weather front is slowly moving
eastward and will dissipate across the northwestern panhandle
through Thursday night.

Short term tonight through Friday as of 1 pm Thursday. The
ridge that is extending from the eastern gulf into the central
panhandle is keeping the main energy from a weak front north of
frederick sound. The ridge axis will pivot to the west pushing the
rain to the west overnight, although the clouds will take some
time to decrease. Areas of low clouds and fog are possible along
the outer coastal areas from baranof island to CAPE yakataga
overnight and into early Friday morning. Fog is expected to
develop overnight in the southern half of the panhandle as some
clearing in the clouds should occur. By mid morning on Friday sky
conditions around the panhandle will be much improved as periods
of rain will have diminished overnight tonight.

Winds are generally northwesterly at 15 mph or less, except for
the skagway haines area where southerly winds of 15 to 25 mph will
diminish overnight. For marine winds, small craft advisories are
in effect for cross sounds and northern lynn canal this evening.

Cape decision is also stronger with winds to 20 kt this evening.

Models are in good agreement. For pop, the preference was to the
aksref and aknamdng for the increased chances today and the
canadian for the precipitation across the gulf with the weak
front. Still had to increase the chances to categorical for most
of the northern panhandle today and tonight for the periods of
light rain. Kept the QPF low, as the precipitation as
precipitation rates are minimal with only a few hundredths of an
inch expected, with yakutat being the wettest with around a tenth
of an inch for the entire day today.

Made only minor changes in the wind, pressure and snow level areas
as the grids looked in good agreement with the new models.

Forecast confidence is generally high, with lower confidence in
the extent of the fog and how much it may restrict visibility
during the overnight and early morning time.

Long term Friday night through Wednesday as of 10 pm
Wednesday. A short wave digging south out of the eastern bering
sea deepens the upper trough near 160w Friday night through
Saturday night, while an upper ridge builds along the western us
coast and over british columbia. The corresponding surface ridge
is positioned over the eastern half of the gulf with a complex
pattern of low pressure south of the alaska peninsula and the

The ridge position should be west enough to keep the panhandle
region on the dry side into the start of the next week. For the
early part of next week (mon-wed) there are model differences that
are positioning the ridge axis more to to the east which will
allow a better chance of rain to try and ride over the western
side of the ridge.

With persistence of the ridge over the eastern gulf for several
days will need to watch for the development continuation of the
widespread low marine stratus deck out over the gulf and how far
it will try and penetrate into the southeast panhandle. Have kept
the mostly cloudy skies in the forecast, though if the low clouds
and fog develop then that will be under forecast.

For Friday night to Saturday, used the GFS and then tried to
blend back to the wpc solution where possible. Forecast confidence
is average through the extended part of the forecast.

Aviation Low clouds and very light rain over the northern
panhandle and yakutat through Thursday night with improving
conditions on Friday. Patchy fog is expected tonight over the
central and southern inner channels where cloud cover will be
thinnest and radiational cooling will be the greatest.

Ajk watches warnings advisories
Public... None.

Marine... Small craft advisory for pkz012-022.

Kv bezenek
visit us at http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BLTA2 - Bartlet Cove AK 47 mi58 min S 5.1 G 8 46°F 1019.3 hPa
CSPA2 - Cape Spencer, AK 47 mi74 min W 20 G 24 45°F 43°F
ELFA2 - 9452634 - Elfin Cove, AK 49 mi54 min 45°F 50°F1020.8 hPa

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Elfin Cove - Elfin Cove Seaplane Base, AK48 mi4.5 hrsWNW 615.00 miOvercast46°F44°F93%1020 hPa

Wind History from AEL (wind in knots)
Last 24hr----------------------NW8--NW8--NW9--NW12--NW10--NW12--NW6
1 day agoNW15
2 days ago----------------------4--NW9--NW12--NW10--NW12--NW13----

Tide / Current Tables for Composite Island, Glacier Bay, Alaska
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Composite Island
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Fri -- 02:12 AM AKDT     20.05 feet High Tide
Fri -- 04:14 AM AKDT     Sunrise
Fri -- 05:42 AM AKDT     Moonrise
Fri -- 08:51 AM AKDT     -4.66 feet Low Tide
Fri -- 03:08 PM AKDT     17.42 feet High Tide
Fri -- 09:02 PM AKDT     0.63 feet Low Tide
Fri -- 09:53 PM AKDT     Sunset
Fri -- 10:51 PM AKDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Muir Inlet, Glacier Bay, Alaska
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Muir Inlet
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Fri -- 02:12 AM AKDT     20.11 feet High Tide
Fri -- 04:12 AM AKDT     Sunrise
Fri -- 05:40 AM AKDT     Moonrise
Fri -- 08:52 AM AKDT     -4.77 feet Low Tide
Fri -- 03:06 PM AKDT     17.69 feet High Tide
Fri -- 09:01 PM AKDT     0.60 feet Low Tide
Fri -- 09:52 PM AKDT     Sunset
Fri -- 10:49 PM AKDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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

GOES Local Image of PacificNorthwest    EDIT

Wind Forecast for (3,6,7,8)
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Ground Weather Radar Station Biorka Is., AK
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weather_mapweather_map weather_map

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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 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 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.