Thursday, March23, 2017 L-36.com


Marine Weather and Tides
Tenakee Springs, 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 6:44AMSunset 7:23PM Thursday March 23, 2017 6:16 PM AKDT (02:16 UTC) Moonrise 4:18AMMoonset 12:55PM Illumination 13% Phase: Waning Crescent; Moon at 26 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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PKZ032 Northern Chatham Strait- 312 Pm Akdt Thu Mar 23 2017
Tonight..SE wind 15 kt becoming N late. Seas 3 ft.
Fri..N wind 15 kt. Seas 3 ft.
Fri night..NW wind 10 kt. Seas 2 ft or less. Rain and snow.
Sat..S wind 15 kt. Seas 3 ft. Rain and snow.
Sat night..SE wind 20 kt. Gusts to 35 kt. Seas 4 ft.
Sun..N wind 20 kt. Seas 4 ft.
Mon..N wind 15 kt. Seas 4 ft.
Tue..NE wind 15 kt. Seas 3 ft.

7 Day Forecast for Marine Location Near Tenakee Springs, AK
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location: 57.85, -135.02     debug


Area Discussion for -
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Fxak67 pajk 232341
afdajk
southeast alaska forecast discussion
national weather service juneau ak
341 pm akdt Thu mar 23 2017

Short term While one short-wave lifts northward across the
panhandle, spreading rain and snow showers with it, another
follows it spreading stratiform precipitation into the southern
panhandle tonight and spreading northward into the central
panhandle Friday.

More snow was observed today than originally thought, but impacts
were low. Ketchikan probably received around a half-inch before
showers moved northward. Juneau and points around the central
panhandle got just a dusting. These showers, now spreading into
haines and yakutat will progress north and westward through
tonight. By late tonight breaks around juneau and gustavus may
allow for some patchy fog formation.

For the south, fair skies this afternoon will quickly begin
darkening from the south as rain/snow moves in late. The forecast
for ketchikan and points around the southern inner channels and
prince of wales island is probably the most difficult. Temps at
850 warm to around -4 c which suggest rain. But surface gradient
orientation suggest a northerly wind that may help dry the
boundary layer sufficiently to allow for column cooling. This
would help keep snow mixing in with rain. Precipitation rates, if
high enough would further keep snow mixing in. We have opted to
keep the rain/snow for ketchikan, but our confidence is low, as
they are low for all the above points. Farther north, precip
should begin as all snow around petersburg with maybe a mix for
wrangell that will change to rain later in the day. Juneau and
points north and west will stay out of the main precipitation
shield Friday but will see increasing clouds.

Small craft winds were added for the low around dixon entrance and
were kept for northerlies tonight in lynn canal. Also, we added 30
mph gusts for downtown juneau Friday morning in support of a weak
outflow event ahead of the system to the south. Gfs/nam were used
for any changes needed. Confidence is good, except over the
southern areas for precipitation type tonight.

Long term Models have trended a little slower and further w
with a low for Fri night and sat. A weak n-s oriented trof and
mid-level deformation zone will develop over the inner channels,
which will enhance the precip potential over most of the inner
channels except the far NW part Fri night into Sat morning. Some
of this precip will fall as snow especially over the more eastern
areas, and an inch or 2 of snow could fall by Sat morning in some
areas. Upper trof will sweep across the area Sat which should
push this precip out of the area by early to mid-afternoon, but
onshore flow will keep some showers going later on. The NE gulf
coast will likely remain dry Fri night into Sat morning as
offshore flow continues, but they will become onshore sat
afternoon and increase threat for showers in the afternoon.

Later on, looking like another system will move in for sun. Models
differ some on track of main low center and supporting shortwave
aloft, but looking like system will get into the eastern gulf at
least. More systems should move in next week but timing and track
differ somewhat on the models. Still, overall pattern will be
active so may end up with some precip during most of the week,
with a possible break wed/thu as larger scale ridge tries to build
over the area before shifting E ahead of a much larger system for
late Thu and fri.

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

Marine... Small craft advisory for pkz012-041.

Jwa/rwt
visit us at http://

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SISA2 - Sisters Island, AK 26 mi55 min ENE 12 G 19 38°F
PRTA2 - Point Retreat, AK 39 mi67 min NW 2.9 G 8 35°F 1005.6 hPa33°F
JNEA2 - 9452210 - Juneau, AK 45 mi47 min E 1.9 G 5.1 39°F 38°F1007.7 hPa
SDIA2 - South Douglas, AK 45 mi28 min SW 2.9 G 4.1 39°F 1006.8 hPa37°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
Hoonah - Hoonah Seaplane Base, AK29 mi21 minE 610.00 miLight Rain37°F35°F93%1006.7 hPa

Wind History from AOH (wind in knots)
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Last 24hrCalmCalmE4E4E5CalmCalmCalmE3CalmCalmCalmE3CalmE9E10E12E11E11E11
G16
E11E9E10E6
1 day agoCalmE3SE5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmW44S4NE4S4E5Calm
2 days agoNE3E3CalmCalmE3E3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSW3W3SW3W5CalmCalmCalm

Tide / Current Tables for Freshwater Bay, Chichagof Island, Alaska
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Freshwater Bay
Click for Map
Thu -- 04:27 AM AKDT     5.73 feet Low Tide
Thu -- 05:18 AM AKDT     Moonrise
Thu -- 06:52 AM AKDT     Sunrise
Thu -- 10:19 AM AKDT     11.81 feet High Tide
Thu -- 01:54 PM AKDT     Moonset
Thu -- 05:06 PM AKDT     2.06 feet Low Tide
Thu -- 07:21 PM AKDT     Sunset
Thu -- 11:32 PM AKDT     11.69 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
9.98.97.66.55.85.96.78.29.811.111.811.610.68.86.64.42.82.12.64.16.38.610.511.5

Tide / Current Tables for Hawk Inlet Entrance, Alaska
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Hawk Inlet Entrance
Click for Map
Thu -- 04:34 AM AKDT     5.64 feet Low Tide
Thu -- 05:18 AM AKDT     Moonrise
Thu -- 06:51 AM AKDT     Sunrise
Thu -- 10:23 AM AKDT     12.78 feet High Tide
Thu -- 01:52 PM AKDT     Moonset
Thu -- 05:03 PM AKDT     2.20 feet Low Tide
Thu -- 07:21 PM AKDT     Sunset
Thu -- 11:38 PM AKDT     12.47 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.89.68.16.75.85.76.68.310.211.812.712.611.49.36.84.52.92.22.74.36.691112.2

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 (22,6,7,8)
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Ground Weather Radar Station Biorka Is., AK
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weather_mapweather_map weather_map

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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.