Monday, November30, 2020
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Marine Weather and Tides
Angoon, AK

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 8:16AMSunset 3:16PM Monday November 30, 2020 8:41 AM AKST (17:41 UTC) Moonrise 4:37PMMoonset 9:34AM Illumination 100% Phase: Full Moon; Moon at 15 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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PKZ034 Frederick Sound- 421 Am Akst Mon Nov 30 2020
.gale warning tonight...
Today..SW wind 15 kt becoming se 20 kt in the afternoon. Gusts to 35 kt in the afternoon. Seas 4 ft.
Tonight..SE wind 30 kt increasing to 40 kt late. Gusts to 55 kt. Seas 7 ft. Rain late.
Tue..SE gale to 40 kt diminishing to 30 kt in the afternoon. Seas 7 ft. Rain.
Tue night..SE wind 25 kt. Gusts to 40 kt. Seas 5 ft. Rain.
Wed..SE wind 25 kt. Seas 5 ft.
Thu..SE wind 20 kt. Seas 4 ft.
Fri..E wind 10 kt. Seas building to 3 ft.


7 Day Forecast for Marine Location Near Angoon, AK
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location: 57.31, -134.13     debug


Area Discussion for -
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FXAK67 PAJK 300007 AFDAJK

Southeast Alaska Forecast Discussion National Weather Service Juneau AK 307 PM AKST Sun Nov 29 2020

SHORT TERM. This afternoon we sit on the edge of our seats with eyes locked on an approaching storm force low that enters the gulf Monday afternoon. This storm will blanket the panhandle with a variety of hazards Monday through Thursday. But before getting carried away, lets talk about this evening through Monday morning. Satellite imagery shows a surface low located SE of Kodiak Island streaming onshore showers across the northern and central panhandle. This low will move into Prince William Sound through the night allowing for shower activity to become scattered across the north and central panhandle. An associated frontal band has blanketed over the southern panhandle. Areas from Sitka north have been seeing widespread showers through the afternoon while areas to the south have been seeing more organized precip with moderate to heavy rain at times. Furthermore, this evening, a low will develop and surge north along the frontal boundary impacting the southern panhandle. This will allow for precip rates to stay elevated dropping an additional 1 to 2 inches of rain. With continued rainfall, rivers have been rising across the south. An areal Flood Advisory has been issued for the southern Inner Channels until 9 PM tonight. Minor flooding is possible especially for areas around Thorne River and Ward Lake. By late tonight, precip will become more scattered as the low becomes displaced to the east into BC.

Monday morning, weak surface ridging builds through the inner channels while onshore flow keeps isolated to scattered showers moving through the panhandle. These conditions persist ahead of the next large system. By Monday evening, a storm force front will have entered the central Gulf and will be heading towards the panhandle. Winds will begin to increase through the inner channels and over land Monday evening ahead of the frontal band. Storm force winds along coastal marine areas along with high end gales are expected through inner channels Monday night into Tuesday morning. Over land, sustained winds 20 to 30 mph with gusts up to 55 mph are expected. For Yakutat and Sitka gusts to 60 mph are possible prompting a High Wind Watch for the surrounding areas.

Not only will this system cause high winds but it will also bring a atmospheric river producing widespread heavy rain with 3 hr rainfall rates anywhere between 0.50 to 1.00 inches. This has historical significants has some areas will likely reach near record rainfall amounts. With consistent heavy rainfall rates flooding becomes a concern. A Flood Watch has been issued for the central and northern panhandle. This storm will have deep moisture support with a large fetch from the southern Gulf. Moisture support will remain through Wednesday night allowing for impressive 48 hr rainfall amounts between 5 to 10 inches across the north central panhandle with 2 to 4 inches across the south.

With December fast approaching, lets not forget about the winter weather potential. Although temperatures will not be conducive for snow due to strong warm air advection with advancing frontal band, areas across the far north will hold on to colder temps the longest. Building high pressure in the Yukon will keep temperatures near Haines Boarder Customs as well as White Pass below freezing ahead of the front. With heavy rain rates producing large QPF values combined with subfreezing temps, a Winter Storm Watch has been issued from Monday night through Tuesday night for the highways near Haines Boarder Customs and White Pass. The city of Haines and Skagway are expected to see all rain as temperatures surge above freezing.

Overall, a very busy week approaches. Analysis will continue as this storm continues to approach the panhandle. Confidence is moderate with the wind and heavy rain aspects of the forecast with lower confidence on winter weather along the highways. Ultimately, there remains room for forecast improvements as better guidance and understanding of local dynamics develop.

LONG TERM. /Tuesday through Sunday night/ Tuesday starts with the atmospheric river in place across the northern panhandle and the weather front running southward towards Hawaii. A developing wave on the front will move along it into the northern panhandle Wednesday enhancing the heavy precipitation for another 18 hours or so into early Thursday morning. The front then moves into Western Canada by Thursday midday. Rain will be letting up or even briefly stopping by that afternoon. Totals from the event are looking very impressive based on the climate stats, and are in ranges that flooding and other related heavy rain issues become much more likely. This will be looked at closely over the next couple of shifts to monitor.

Warm air being driven north ahead of the front will have warmed most highs in the 40s to near 50. Behind the front expect some minor cooling, however most freezing levels will still be between 1000 and 2500 feet for the northern panhandle.

Depending on the intensity of the warming, and the snow level, the higher elevations of the Klondike Highway could see a significant event near the summit with accumulations 1 to 3 feet, thats only if the warming doesn't completely rise above the 3000 foot level there.

After that front, the confidence in the forecast shifts drastically as cross model agreement has flown out the window. They agree that there will be a low in the gulf Thursday, but strength has differences of 15 to 20 mb and placement is roughly 500 nm. The panhandle should get some more rain, and potentially some wind that would result in at least small craft being issued for the marines. Ensemble guidance have a general idea the weather more than a typical fall/early winter systems may impact the panhandle.

At the tail end of the timeframe another low for the eastern gulf moves out of the Pacific for Sunday, while a much more significant very deep low (near 950 mb) moves east south of the central Aleutians.

AJK WATCHES/WARNINGS/ADVISORIES. PUBLIC . Areal Flood Advisory until 9 PM AKST this evening for AKZ028. MARINE . Small Craft Advisory for PKZ022-036-041>043-051>053.



CC/Bezenek

Visit us at http://www.weather.gov/Juneau


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FFIA2 - Five Finger, AK 27 mi41 min SW 17 G 18 39°F 1006.7 hPa (+5.2)
PGXA2 33 mi37 min ESE 1.9 G 6 37°F 34°F
TKEA2 - Tenakee Springs, AK 66 mi29 min NNE 1.9 G 4.1 34°F 1004.9 hPa34°F

Wind History for Juneau, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kake - Kake Airport, AK25 mi45 minENE 610.00 miFair31°F30°F96%1009.3 hPa

Link to 5 minute data for PAFE

Wind History from AFE (wind in knots)
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Last 24hrE8E9E7E8E6E5E6E4E6E4E3CalmNE3E3CalmSE3Calm333Calm4CalmE6
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Tide / Current Tables for Cannery Cove, Pybus Bay, Alaska
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Cannery Cove
Click for Map
Mon -- 12:32 AM AKST     Full Moon
Mon -- 12:54 AM AKST     13.95 feet High Tide
Mon -- 06:33 AM AKST     3.19 feet Low Tide
Mon -- 08:11 AM AKST     Sunrise
Mon -- 08:33 AM AKST     Moonset
Mon -- 12:34 PM AKST     15.88 feet High Tide
Mon -- 03:19 PM AKST     Sunset
Mon -- 03:36 PM AKST     Moonrise
Mon -- 07:06 PM AKST     -1.29 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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13.313.91310.87.95.23.53.457.911.113.915.615.714.211.17.13.10-1.3-0.52.15.79.4

Tide / Current Tables for Eliza Harbor, Admiralty Island, Alaska
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Eliza Harbor
Click for Map
Mon -- 12:32 AM AKST     Full Moon
Mon -- 12:56 AM AKST     13.49 feet High Tide
Mon -- 06:35 AM AKST     3.12 feet Low Tide
Mon -- 08:10 AM AKST     Sunrise
Mon -- 08:33 AM AKST     Moonset
Mon -- 12:36 PM AKST     15.35 feet High Tide
Mon -- 03:20 PM AKST     Sunset
Mon -- 03:38 PM AKST     Moonrise
Mon -- 07:08 PM AKST     -1.26 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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12.813.512.710.67.85.13.43.34.87.510.713.415.115.213.810.973.10.1-1.2-0.525.48.9

Weather Map
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wmap_P
GEOS Local Image of PacificNorthwest    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station Biorka Is., AK
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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 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 numerous 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.