Monday, May21, 2018 L-36.com


Marine Weather and Tides
Juneau, AK

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 4:14AMSunset 9:34PM Monday May 21, 2018 7:11 AM AKDT (15:11 UTC) Moonrise 11:22AMMoonset 2:22AM Illumination 42% Phase: First Quarter Moon; Moon at 7 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- 422 Am Akdt Mon May 21 2018
.small craft advisory through this afternoon...
Today..SE wind 25 kt. Gusts to 40 kt. Seas 5 ft. Rain.
Tonight..SE wind 20 kt. Gusts to 35 kt in the evening. Seas 4 ft. Rain in the evening, then showers late.
Tue..S wind 15 kt. Seas 3 ft. Showers.
Tue night..S wind 10 kt. Seas 2 ft or less.
Wed..SW wind 10 kt. Seas 2 ft or less.
Thu..S wind 15 kt. Seas 3 ft.
Fri..S wind 15 kt becoming W 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 211316
afdajk
southeast alaska forecast discussion
national weather service juneau ak
516 am akdt Mon may 21 2018

Short term through Tuesday night gale force occluded front
over the eastern gulf will drift E across SE ak this afternoon and
tonight. The front will likely stall just SE of the far southern
area by Tue morning. Weak low pressure waves will move N along
the front toward the northern bc coast Tue and Tue night. A gale
force low will slowly weaken over the western gulf through tue
night. Used blend of the 00z GFS and 06z NAM to handle the main
features.

Main concerns will be rainfall amounts and winds. The occluded
front has borderline atmospheric river conditions along it, which
will cause locally heavy rain in the area today. Looking like
southern slopes will see the most rainfall from this front. Still
expect an inch or two of rain for much of the area. Am concerned
about the far SE area late tonight into Tue night though as weak
low pressure waves could keep significant rain going there. Models
differ some on how far W this rain band will be, but potential is
there for 4+ inches of rain in some places over the far se
panhandle through Tue night. After the front moves through, precip
will transition to showers over most of the area later tonight and
tue. Still expect decent rises on area rivers and streams but
flooding is not expected attm. Will need to monitor the far se
streams though, depending on how far W the heavier rain band
remains with the low pressure waves.

Winds ahead of the front are in the 35-40 kt range over the gulf,
and 20-35 kt for the inner channels. Am expecting winds to
decrease after front moves through the area, but still hang around
sca levels over the gulf as weakening second wrap of front moves
in tonight. The far SE inner channels will hang onto the stronger
winds the longest with front being slow to move past them later
tonight. Kept in strong wind headlines for zones 23 and 27 for today.

Long term Wednesday through Monday as of 10 pm Sunday
a surface low will weaken over the central gulf on Wednesday. A
second low in the bering sea will push a front across the aleutian
islands and a triple point low will form in the far western gulf
Wednesday night, absorbing the remains of the first low. N gulf,
stealing the energy from the older low. This triple point low and
associated front will displace a ridge of high pressure east
across the panhandle through Friday night. The parent low to the
triple point will then move into the gulf and slowly weaken
through Monday night.

This monotone weather pattern will maintain cloudy and wet
conditions for the panhandle though much of the long range
forecast period. The second low moving in from the west will
increase the winds in the gulf to 20 kt as early as Thursday
morning through Friday. The gradient will also tighten over the
northern inner channels Friday night for a brief pulse of stronger
winds as well. After that, the winds will return to 15 kt or
less. Temperatures will remain in the mid to upper 50s during the
day and ranging in the 40s overnight.

Overall models remain in fairly good agreement. Used gfs ECMWF to
make minimal changes to the forecast through the weekend and wpc
solution Monday.

Ajk watches warnings advisories
Public... Strong wind until 4 pm akdt this afternoon for akz027.

Strong wind until 1 pm akdt this afternoon for akz023.

Marine... Gale warning for pkz036-041>043-051-052.

Small craft advisory for pkz012-013-021-022-031>035-053.

Rwt fritsch kav
visit us at http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SCXA2 9 mi27 min E 30 G 35 45°F 1004.6 hPa42°F
AJXA2 20 mi27 min S 8.9 G 14 46°F 1006.2 hPa40°F
PTLA2 20 mi19 min E 6 G 13 49°F 1006.1 hPa42°F
MVXA2 20 mi27 min ESE 8 G 14 47°F 1006.5 hPa41°F
MXXA2 20 mi27 min SE 12 G 22
JNEA2 - 9452210 - Juneau, AK 20 mi47 min E 5.1 G 7 49°F 42°F1007.1 hPa
JLXA2 20 mi27 min 5.1 G 9.9 46°F 1005.9 hPa40°F
JMLA2 20 mi19 min SSE 9.9 G 13 46°F 1006.5 hPa45°F
NKXA2 21 mi27 min S 16 G 22 45°F 1004.1 hPa42°F
MRNA2 22 mi19 min E 8.9 G 13 46°F 1007.3 hPa42°F
RIXA2 23 mi27 min SE 9.9 G 14 45°F 1004.8 hPa40°F
PBPA2 - Point Bishop, AK 28 mi61 min Calm G 5.1 48°F 1006.2 hPa47°F
PRTA2 - Point Retreat, AK 29 mi61 min S 4.1 G 9.9 48°F 1004.5 hPa46°F
SISA2 - Sisters Island, AK 34 mi49 min ESE 8.9 G 16 48°F
TKEA2 - Tenakee Springs, AK 37 mi19 min E 14 G 21 45°F 1004.3 hPa41°F
LIXA2 39 mi27 min S 16 G 28 44°F 1005.9 hPa

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
Juneau, Juneau International Airport, AK22 mi18 minESE 168.00 miLight Rain49°F46°F93%1006.2 hPa

Wind History from AJN (wind in knots)
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Last 24hrE9E13E13E13SE13SE12E19SE16
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1 day agoW56SW8SW9SW8SW11SW11SW9SW9SW8SW7SW3CalmE4E7E5E7E5S3E10E5E7E13E11
2 days agoCalmCalmSE8SW6E11E17SE17SE17SE15SE14SE11N6NE4NE5E4E3E3CalmE4CalmCalmCalmCalmCalm

Tide / Current Tables for Hawk Inlet Entrance, Alaska
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Hawk Inlet Entrance
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Mon -- 12:14 AM AKDT     3.93 feet Low Tide
Mon -- 02:22 AM AKDT     Moonset
Mon -- 04:22 AM AKDT     Sunrise
Mon -- 06:09 AM AKDT     14.20 feet High Tide
Mon -- 11:22 AM AKDT     Moonrise
Mon -- 12:48 PM AKDT     -0.15 feet Low Tide
Mon -- 07:34 PM AKDT     13.31 feet High Tide
Mon -- 07:50 PM AKDT     First Quarter
Mon -- 09:30 PM AKDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
44.46.18.711.313.314.213.711.995.52.40.4-0.113.56.69.511.813.113.212.110.17.7

Tide / Current Tables for Fritz Cove, Douglas Island, Alaska
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Fritz Cove
Click for Map
Mon -- 12:20 AM AKDT     3.91 feet Low Tide
Mon -- 02:22 AM AKDT     Moonset
Mon -- 04:19 AM AKDT     Sunrise
Mon -- 06:12 AM AKDT     14.80 feet High Tide
Mon -- 11:20 AM AKDT     Moonrise
Mon -- 12:54 PM AKDT     -0.26 feet Low Tide
Mon -- 07:37 PM AKDT     13.86 feet High Tide
Mon -- 07:50 PM AKDT     First Quarter
Mon -- 09:31 PM AKDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
44.368.711.613.814.814.412.59.662.70.4-0.20.83.36.59.712.213.613.812.710.68.1

Weather Map and Satellite Images
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wmap_P
GOES 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.
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Wind Forecast for (11,2,3,4)
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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.