Tuesday, November21, 2017 L-36.com


Marine Weather and Tides
Juneau, 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 7:59AMSunset 3:27PM Tuesday November 21, 2017 3:04 AM AKST (12:04 UTC) Moonrise 11:45AMMoonset 7:11PM Illumination 8% Phase: Waxing Crescent; Moon at 3 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- 410 Pm Akst Mon Nov 20 2017 Updated
.small craft advisory through late tonight...
Tonight..N wind 30 kt. Seas 8 ft. Snow.
Tue..N wind 20 kt. Seas 7 ft. Snow and rain.
Tue night..N wind 20 kt. Seas 6 ft.
Wed..N wind 20 kt. Seas 6 ft. Snow.
Wed night..N wind 20 kt. Seas 4 ft.
Thu..SE wind 15 kt increasing to 25 kt. Seas 4 ft.
Fri..SE wind 25 kt. Seas 5 ft.
Sat..N wind 25 kt. Seas 5 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 210024
afdajk
southeast alaska forecast discussion
national weather service juneau ak
324 pm akst Mon nov 20 2017

Short term through Tuesday night an occluded front over the
eastern gulf will move into the northern panhandle tonight, then
slowly weaken there tue. The arctic front will remain across the
central panhandle through tue. Did not make any big changes to the
forecast through Tue night, with mostly local effect edits made to
a few spots.

With the occluded front moving onshore tonight, expect overrunning
snow to develop over the N half of the area, with some rain and
snow along the central and southern outer coast. Kept the winter
weather headlines as is, with wwa for zones 20-21-24 and 25. Still
looks like a general 3 to 6 inches of snow in the advisory area.

Snow will be on the fluffy side as well. N and S of the advisory
area, a couple of inches are possible although zones 19 and 22
could get more like 2-4 inches. The snow should taper off tue
afternoon as occluded front falls apart. More precip may get into
the far S area by late Tue night as another occluded front
approaches from the s.

Still some gale force winds out of cross sound into the NE gulf,
and in N lynn canal. These winds will slowly diminish tonight into
tue, but still expect SCA level winds to continue over the N inner
channels and in outflow areas into the NE gulf. S area will have
some SCA level winds tonight that should diminish some tue.

.Long term Wednesday through Saturday active weather pattern
continues through the extended forecast. A low looks to approach
from the south early Wednesday with a weakening frontal band
spreading precip north across the region through the afternoon.

With the low to the south, winds through the inner channels will
continue to be out of the north. Many places will have at least
small craft level winds with gale force gusts out of interior
passes. These winds will likely decrease behind the frontal band
for a period.

Model differences on the low approaching from the south on Wednesday
are vast and have been very inconsistent over the last several days.

Interestingly, latest models are in good agreement on warming
temperatures aloft on Wednesday with the 0c line at 850mb reaching
as far north as juneau. This would mean more of a mix or change over
to rain for many locations that have only seen snow in the last 2
weeks. Since this is a new idea among the models, we have only
increased temperatures slightly during this time with mostly snow
and will adjust further if this warming trend continues with
subsequent model runs. Either way, the frontal band would be
weakening with an offshore component to the wind thus limiting
accumulations to a few inches. However, closer to the low center,
the southern panhandle could see heavy rain.

There is slightly better consensus for another low moving into the
central gulf from the west Thursday night then meandering in the
gulf through next weekend. This is a change from what we were seeing
a couple days ago where a warming trend was looking likely and
moisture coming from the south, now with the low coming across from
the bering, temps may not warm as much over the holiday. Still have
many places seeing a mix but overall confidence in the rain snow
line across the central panhandle lowers through the end of the
week.

Ajk watches warnings advisories
Public... Winter weather advisory from 9 pm this evening to 9 am akst
Tuesday for akz024.

Winter weather advisory from 9 pm this evening to noon akst
Tuesday for akz025.

Winter weather advisory until 9 am akst Tuesday for akz020-021.

Marine... Gale warning for pkz012-022-043.

Small craft advisory for pkz013-021-031-032-034>036-041-042-
051>053.

Rwt ferrin
visit us at http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SDIA2 - South Douglas, AK 20 mi37 min Calm G 1 23°F 1014.9 hPa22°F
JNEA2 - 9452210 - Juneau, AK 20 mi47 min E 2.9 G 6 24°F 1015.7 hPa
PBPA2 - Point Bishop, AK 28 mi55 min N 16 G 38 1014.4 hPa
PRTA2 - Point Retreat, AK 29 mi55 min N 21 G 34 24°F 1014 hPa23°F
SISA2 - Sisters Island, AK 34 mi43 min ENE 21 G 24 28°F

Wind History for Juneau, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Juneau, Juneau International Airport, AK22 mi72 minNE 30.50 miSnow Freezing Fog22°F21°F96%1015.9 hPa

Wind History from AJN (wind in knots)
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Last 24hrCalmCalmNE5NE5CalmN5N3Calm3CalmS3CalmNE3NE3NE4NE3NE4CalmCalmN3CalmCalmNE4NE3
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE3CalmN4NE3NE3N3NE4NE3N4NE4NE4CalmCalm
2 days ago--CalmCalmCalmCalmCalmCalmCalmCalmCalmW3SW4CalmNE3CalmCalmCalmCalmCalmW3CalmE3CalmCalm

Tide / Current Tables for Hawk Inlet Entrance, Alaska
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Hawk Inlet Entrance
Click for Map
Tue -- 02:34 AM AKST     14.25 feet High Tide
Tue -- 08:00 AM AKST     Sunrise
Tue -- 08:19 AM AKST     3.76 feet Low Tide
Tue -- 10:44 AM AKST     Moonrise
Tue -- 02:08 PM AKST     15.81 feet High Tide
Tue -- 03:29 PM AKST     Sunset
Tue -- 06:12 PM AKST     Moonset
Tue -- 08:41 PM AKST     -0.35 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
9.612.41414.112.810.47.65.13.84.26.19.112.314.815.815.2139.65.72.20.1-0.31.24.1

Tide / Current Tables for Fritz Cove, Douglas Island, Alaska
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Fritz Cove
Click for Map
Tue -- 02:37 AM AKST     14.86 feet High Tide
Tue -- 08:01 AM AKST     Sunrise
Tue -- 08:25 AM AKST     3.74 feet Low Tide
Tue -- 10:45 AM AKST     Moonrise
Tue -- 02:11 PM AKST     16.52 feet High Tide
Tue -- 03:27 PM AKST     Sunset
Tue -- 06:10 PM AKST     Moonset
Tue -- 08:47 PM AKST     -0.46 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
9.712.814.514.813.51185.43.94.169.212.615.316.51613.810.36.22.50.1-0.413.9

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 (7,2,3,4)
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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.