Monday, December18, 2017 L-36.com


Marine Weather and Tides
Metlakatla, 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 8:51AMSunset 4:12PM Monday December 18, 2017 1:10 AM PST (09:10 UTC) Moonrise 9:09AMMoonset 5:10PM Illumination 0% Phase: New Moon; Moon at 0 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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PKZ036 Clarence Strait- 330 Pm Akst Sun Dec 17 2017
Tonight..S wind 15 kt. Seas 3 ft. Rain showers in the evening, then scattered rain and snow showers late.
Mon..SE wind 20 kt. Seas 4 ft. Snow showers in the morning. Rain showers.
Mon night..N wind 15 kt. Seas 3 ft, except 5 ft near ocean entrances. Scattered rain and snow showers.
Tue..N wind 20 kt. Seas 3 ft.
Tue night..N wind 20 kt. Seas 3 ft.
Wed..SE wind 15 kt. Seas 3 ft.
Thu..SE wind 15 kt. Seas 3 ft.
Fri..SE wind 15 kt. Seas 3 ft.

7 Day Forecast for Marine Location Near Metlakatla, AK
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location: 55.23, -131.13     debug


Area Discussion for -
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Fxak67 pajk 172343
afdajk
southeast alaska forecast discussion
national weather service juneau ak
243 pm akst Sun dec 17 2017

Short term through Tuesday night active day today with some
rather strong showers moving through the gulf and outer coastal
areas. Some of these showers have been strong enough for ice
pellets and even lightning, particularly around sitka where
lightning caused a localized power outage this morning. Farther
inland, rain showers have been the main feature though some
heavier showers have produced snow in juneau, and petersburg as
cooler air gradually moves in. Winds have also been a little gusty
in the northern panhandle today. Eldred rock has reported winds of
25 mph most of the day and skagway has gusted as high as 31 kt.

For the short range forecast, weakening upper ridge over the
western us and canada is allowing a trough to propagate east into
se alaska bringing some cooler air along with it. Coolest air
appears to be Mon into early Tue before southerly flow brings more
warm air advection into the area. At the surface, a weak low in
the northern gulf will gradually move SE through Tue spreading
showers into the panhandle as it goes. The cooler air moving in
will change most places from rain to snow through tonight though
with little in way of moisture to work with any snow accumulations
will only be an inch or two at most. The cooler air aloft may also
spark more thunderstorms in the SE gulf and eastern outer coast
this evening (isolated t-storms mentioned). Best convective
potential then moves east so the threat of t-storms should
diminish late tonight. In addition, a strengthening surface high
in the yukon will cause northerly outflow to start up drying out
the panhandle. Main changes here was a trend of drying the
northern panhandle out sooner then what was in there previous.

Main concerns for wind is the northerly outflow which will reach
its strongest Monday night. Gale force winds are expected for lynn
canal at that time with gusty winds in skagway and haines. These
winds are not expected to last long as the high pressure that is
sustaining it quickly moves off to the east by tue. Elsewhere
winds remain mostly 20 kt or less through the short range. Most
changes for winds were minor.

Guidance was good for the period with some minor differences on
when individual bands of showers would come inland and how fast
the panhandle will dry out over the next 24 hours. GFS was the
main model used for overall changes with some NAM used for various
elements.

Long term Tuesday through Saturday as of 10 pm Saturday... An
upper level high pressure ridge will build across the panhandle
this next week and slowly propagate from west to east. The upper
level ridge will result in drier conditions occurring across the
panhandle with fairly dry conditions occurring on Tuesday across
most areas of the panhandle. Wednesday will be fairly dry however
moisture will begin to increase primarily across northern areas
of the panhandle. Thursday and Friday a series of weak fronts
will move near the panhandle gradually increasing the moisture
across the region. The chances for precipitation will begin
increasing on Thursday and increase further on Friday. Cloudiness
will diminish on Tuesday with the ridge building across the
region. However cloudiness will begin increasing by Wednesday
afternoon and then increase further on Thursday with the
increasing moisture advected across the area by approaching weak
fronts.

Temperatures will remain cool across the panhandle but above
seasonal normal values for this time of the year.

Primarily used the GFS model for the long term forecast with only
minor changes if any.

Ajk watches warnings advisories
Public... None.

Marine... Small craft advisory for pkz012-013.

Small craft advisory due to seas for pkz022-041>043-051>053.

Eal bm
visit us at http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KECA2 - 9450460 - Ketchikan, AK 27 mi41 min SW 1.9 G 1.9
46145 - Central Dixon Entrance Buoy 91 mi71 min W 14 G 16 42°F 45°F6 ft1010.7 hPa (+1.2)

Wind History for Ketchikan, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Metlakatla, Metlakatla Seaplane Base, AK16 mi75 minN 010.00 miLight Rain37°F35°F93%1009.7 hPa

Wind History from AMM (wind in knots)
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Last 24hrNW4W6SW7SE6----SE3SE4S4--S5E4S34S4S4CalmSE3CalmCalmSE3E3CalmCalm
1 day ago------SE12
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SW7SW14SW14----W8--
2 days agoS4SW6----S6SW13
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S3--S5S5----SW5S3S5SE3S4SE4------SE5SE6SE7

Tide / Current Tables for Alava Bay, Alaska
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Alava Bay
Click for Map
Mon -- 12:45 AM AKST     14.33 feet High Tide
Mon -- 06:18 AM AKST     3.64 feet Low Tide
Mon -- 08:07 AM AKST     Sunrise
Mon -- 08:08 AM AKST     Moonrise
Mon -- 12:19 PM AKST     16.41 feet High Tide
Mon -- 03:15 PM AKST     Sunset
Mon -- 04:10 PM AKST     Moonset
Mon -- 06:52 PM AKST     -0.91 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
13.814.313.110.67.653.74.168.912.214.916.31613.910.36.22.4-0.2-0.90.336.510.1

Tide / Current Tables for Mary Island Anchorage, Revillagigedo Channel, Alaska
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Mary Island Anchorage
Click for Map
Mon -- 12:48 AM AKST     14.65 feet High Tide
Mon -- 06:12 AM AKST     3.81 feet Low Tide
Mon -- 08:06 AM AKST     Sunrise
Mon -- 08:07 AM AKST     Moonrise
Mon -- 12:21 PM AKST     16.74 feet High Tide
Mon -- 03:16 PM AKST     Sunset
Mon -- 04:11 PM AKST     Moonset
Mon -- 06:47 PM AKST     -0.88 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
14.114.613.410.87.75.13.84.36.39.312.615.216.616.414.210.66.32.4-0.2-0.80.53.26.810.4

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 (4,6,7,8)
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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.