Tuesday, December10, 2019
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Marine Weather and Tides
Juneau, AK

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 8:31AMSunset 3:09PM Tuesday December 10, 2019 5:24 PM AKST (02:24 UTC) Moonrise 3:46PMMoonset 7:28AM Illumination 99% Phase: Full Moon; Moon at 14 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- 409 Pm Akst Tue Dec 10 2019
.small craft advisory late tonight through Wednesday...
Tonight..SE wind 15 kt increasing to 25 kt late. Strongest winds N of freshwater bay. Seas 3 ft building to 5 ft. Rain.
Wed..S wind 25 kt. Strongest winds N of freshwater bay. Seas 5 ft. Rain.
Wed night..SE wind 20 kt. Gusts to 35 kt. Seas 4 ft. Rain.
Thu..SE wind 25 kt. Gusts to 40 kt. Seas 5 ft. Rain.
Thu night..SE wind 25 kt. Gusts to 40 kt. Seas 5 ft. Rain.
Fri..SE wind 15 kt. Seas 3 ft.
Sat..SE wind 20 kt. Seas 4 ft.
Sun..S wind 20 kt. Seas 4 ft.


7 Day Forecast for Marine Location Near Juneau, AK
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location: 58.07, -134.64     debug


Area Discussion for -
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FXAK67 PAJK 102348 AFDAJK

Southeast Alaska Forecast Discussion National Weather Service Juneau AK 248 PM AKST Tue Dec 10 2019

SYNOPSIS. Repeated fronts will affect the panhandle during coming days and there will be a persistent chance of precipitation in the forecast for most locations through Friday. Towards the end of the forecast period, cooler weather can be expected as cold air wraps around a low in the Gulf pushing into Southeast Alaska on Friday.

SHORT TERM. A frontal band that has been pushing eastward through the panhandle during the day is falling apart as it reaches the coast mountains. The pressure gradient associated with this front has been mostly parallel to the north-south inner channels, resulting in lighter winds for many areas. One of the side effects of these lighter winds has been the distinct lack of low level mixing down of the warmer temperatures aloft over the far northern inner channels. Consequently, these areas have continued to lag behind in rising daytime highs when compared to the rest of the panhandle. Freezing rain has been reported at the Haines airport, which prompted the issuance of a winter weather advisory for ice accumulations of less than 1/4 inch until 9 PM this evening. Behind this front, there may be a brief reprieve from the precipitation for some locations during the overnight hours before another front enters the area tomorrow morning. This next front will bring more rain, strong wind gusts to the southern outer coast, and gale force winds over the eastern gulf.

From Wednesday morning onward, the weather over SE Alaska will be driven primarily by a fairly impressive low currently moving northwards from the North Pacific into the Gulf of Alaska. This extratropical cyclone, a well defined mature low with a depth currently in the neighborhood of 960 mb as of the time of writing, will continue to move north over the western gulf before slowing down on Thursday while located southeast of Kodiak Island. The outer band of the occluded front associated with the the low will start to spread into the central and southern panhandle Wednesday morning. Though some model disagreement remains on its exact speed, am still expecting that the front will be impacting most of the panhandle by Wednesday night. It looks probable that a secondary wrap of the occluded front will begin interacting with the panhandle on Thursday, moving upward from the South and overrunning the panhandle fully by late Thursday night. After which, rain will continue to linger, driven by continued advection of moisture through the coastal mountains.

The incoming occluded front will bring more winds over the marine area with a band of 40 to 45 kt across the Gulf of Alaska and some of the coastal waters tonight through tomorrow. Small craft advisory level winds of 25 knots are expected through some of the southern and central inner channels throughout the forecast period.

The precipitation type will be primarily rain across SE Alaska, though the northern panhandle is likely to see some snow, especially during the Thursday-Friday time frame as cooler air starts to infiltrate the area. Higher elevations will also likely see snow during the forecast timeframe.

LONG TERM. /Thursday through Tuesday night/ . This extended range forecast begins with an upper low developing in the western gulf and shifting slightly to the east through Friday morning. An upper trough extends south of the low into the north Pacific. With these features in place there is essentially no steering flow and this fact is evident in the various models' surface depictions; little to no model agreement. An upper ridge west of the Aleutians at the start of this long range period will shift east to be over the Panhandle by Sunday morning, thus steering flow will be once again over the eastern Gulf and Southeast Alaska. However, the chaos remains in the models at the surface. What does appear to be relatively certain is wet weather will persist through most, if not all, of the coming week and this was already reflected in the long range forecast.

One area of the forecast that was changed was temperatures. Medium to long range tabular guidance was mixed, but platform model depictions all indicate that there will be low level cold air advection from the west beginning Thursday night. This, in turn, had an effect on snow levels, which in turn, had an effect on the probability of snow rather than rain by this coming weekend. Fortunately, several days remain before this becomes an issue with impacts on the public, so it can be studied closely by multiple shifts.

Overall long range forecast confidence is below average.

AJK Watches/Warnings/Advisories. PUBLIC . Strong Wind Wednesday morning for AKZ023. Winter Weather Advisory until 9 PM AKST this evening for AKZ019. MARINE . Gale Warning for PKZ041>043-051-052. Small Craft Advisory for PKZ013-021-022-031>033-035-036-053.



GFS/Fritsch

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SCXA2 9 mi32 min ESE 22 G 25 39°F 1004.2 hPa39°F
AJXA2 20 mi33 min SE 2.9 G 4.1 38°F 1007 hPa33°F
PTLA2 20 mi33 min SW 6 G 13 40°F 1006.1 hPa39°F
JMLA2 20 mi33 min SE 5.1 G 8.9 38°F 1007.3 hPa38°F
JNEA2 - 9452210 - Juneau, AK 20 mi55 min ESE 5.1 G 6 40°F 41°F1008 hPa
SDIA2 - South Douglas, AK 20 mi37 min S 4.1 G 4.1 42°F 1007.2 hPa42°F
MVXA2 20 mi33 min ESE 8 G 15 40°F 1007.5 hPa35°F
MXXA2 20 mi33 min SE 9.9 G 15 38°F 1007.4 hPa35°F
JLXA2 20 mi32 min SSE 4.1 G 7 39°F 1006.6 hPa34°F
NKXA2 21 mi33 min NE 4.1 G 8.9 42°F 1005.7 hPa39°F
MRNA2 22 mi33 min SE 2.9 G 6 39°F 1008.1 hPa35°F
RIXA2 23 mi32 min N 16 G 20 41°F 1004.5 hPa40°F
PAXA2 25 mi32 min ENE 14 G 20 36°F 1005.9 hPa34°F
PBPA2 - Point Bishop, AK 28 mi75 min NE 2.9 G 12 37°F 1007.9 hPa34°F
PRTA2 - Point Retreat, AK 29 mi75 min N 2.9 G 5.1 39°F 1007.8 hPa39°F
SISA2 - Sisters Island, AK 34 mi63 min E 13 G 19 44°F
TKEA2 - Tenakee Springs, AK 37 mi33 min ENE 12 G 20 40°F 1005.7 hPa36°F
LIXA2 39 mi33 min N 5.1 G 7 39°F 1005.6 hPa39°F

Wind History for Juneau, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Juneau, Juneau International Airport, AK22 mi32 minE 1010.00 miLight Rain41°F37°F89%1007.6 hPa

Link to 5 minute data for PAJN

Wind History from AJN (wind in knots)
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Last 24hrCalmE6E7E17
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NE11E6E3W4CalmCalmCalmNW4CalmCalmE4E10E6CalmE7SE5E7S4E10E10
1 day agoE14E9E9--E4S3E3NE4--E3CalmCalmCalmCalmCalmCalmCalmCalmCalmE3CalmSE4NW4Calm
2 days agoE12E9E10E10E12E12E15
G19
E13E13E11E11E11E11E12E14E11E13E13E10E10E12E11E13--

Tide / Current Tables for Fritz Cove, Douglas Island, Alaska
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Fritz Cove
Click for Map
Tue -- 05:32 AM AKST     3.35 feet Low Tide
Tue -- 06:29 AM AKST     Moonset
Tue -- 08:34 AM AKST     Sunrise
Tue -- 11:33 AM AKST     17.18 feet High Tide
Tue -- 02:44 PM AKST     Moonrise
Tue -- 03:07 PM AKST     Sunset
Tue -- 06:10 PM AKST     -1.12 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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14.413.4118.15.33.63.65.38.51215.116.91715.412.283.70.4-1.1-0.32.46.310.213.3

Tide / Current Tables for Funter, Funter Bay, Lynn Canal, Alaska
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Funter
Click for Map
Tue -- 05:28 AM AKST     3.45 feet Low Tide
Tue -- 06:30 AM AKST     Moonset
Tue -- 08:35 AM AKST     Sunrise
Tue -- 11:34 AM AKST     16.38 feet High Tide
Tue -- 02:45 PM AKST     Moonrise
Tue -- 03:08 PM AKST     Sunset
Tue -- 06:06 PM AKST     -1.02 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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13.612.610.57.75.23.63.75.48.311.614.416.116.214.611.57.53.40.3-1-0.22.56.19.712.6

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
Wind Forecast for (21,6,7,8)
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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 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.