Thursday, May24, 2018 L-36.com


Marine Weather and Tides
Sitka and, 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 4:08AMSunset 9:40PM Thursday May 24, 2018 1:40 PM AKDT (21:40 UTC) Moonrise 2:31PMMoonset 2:25AM Illumination 76% Phase: Waxing Gibbous; Moon at 10 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- 121 Pm Akdt Thu May 24 2018
Tonight..SE wind 15 kt. Seas 3 ft. Rain.
Fri..S wind 15 kt. Seas 3 ft. Rain.
Fri night..S wind 15 kt. Seas building to 4 ft late. Rain.
Sat..E wind 20 kt. Gusts to 40 kt. Seas 4 ft. Rain.
Sat night..E wind 20 kt. Gusts to 35 kt. Seas 4 ft. Rain.
Sun..S wind 15 kt. Seas building to 3 ft.
Mon..S wind 15 kt. Seas 3 ft.
Tue..S wind 10 kt. Seas 2 ft or less.

7 Day Forecast for Marine Location Near Sitka and , AK
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location: 57.04, -135.39     debug


Area Discussion for -
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Fxak67 pajk 241345
afdajk
southeast alaska forecast discussion
national weather service juneau ak
545 am akdt Thu may 24 2018

Short term through Friday night a surface ridge currently
positioned over the panhandle will slowly drift eastward as a
weather front moves NE into the eastern gulf Thursday night. Mid-
level onshore flow will keep the clouds around today with
scattered showers across SE ak. Winds ahead of the front will
reach small craft levels tonight along the outer coast. Rain along
the front will impact the outer coast and southern panhandle
Friday morning pushing northeastward through Friday afternoon.

Model preference was to blend with the GFS as it provided a good
middle ground dealing with the low position and timing of the
front. Minimal changes were needed for the Thursday to Friday
period. High temperatures were cooled slightly Friday, but will
remain in the mid-to-low 50s. Additional adjustments were made to
the winds and pressure field on Saturday using a blend of the
gfs ECMWF to decrease winds slightly ahead of the next front.

Confidence is above average for today through tomorrow.

Long term Saturday through Thursday as of 10 pm Wednesday
the ECMWF is running a bit fast and strong with the low that moves
in this weekend, nudged the forecast using nam GFS and canadian
where needed.

By Saturday the low will be in the southwestern portion of the
gulf with its associated weather front still on track to spread up
over the panhandle. The southern area will be rain throughout the
day, but the northern area could see a break until Saturday night
as the front pushes north. The low is coming in stronger and the
forecast is now hoisting a gale warning for the gulf and outer
coastal areas Saturday and diminish down to SCA overnight and
through Sunday. The inside waters mainly near ocean entrances and
from frederick sound southward will see wind up to 30 kt Saturday.

Winds will be 20 kt or less over the gulf by late Sunday night and
15 kt or less over the panhandle and inside waters. By Tuesday
winds should be 15 kt or less through Thursday.

The low will move into the central gulf Sunday evening. Overnight
the low will move near the fairweather grounds, quickly filling
Monday night before dropping southeast and becoming a trof by
Tuesday morning. A ridge of high pressure will build over the
panhandle Tuesday through Thursday.

Lowered temperatures again for Sunday a couple of degrees.

Temperatures are still expected to remain in the mid to upper 50s
during the day and range into the 40s overnight. With less clouds
possible with the building ridge, temperatures rise a few degrees
through mid week.

Ajk watches warnings advisories
Public... None.

Marine... Small craft advisory for pkz036-041>043-051-052.

Ddh kv
visit us at http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SHXA2 2 mi57 min NE 4.1 G 7 47°F 1015.3 hPa39°F
ITKA2 3 mi71 min 48°F 49°F1015.3 hPa
STXA2 5 mi57 min S 5.1 G 11 47°F 1015.4 hPa39°F
PGXA2 41 mi57 min ESE 14 G 18 47°F 39°F
TKEA2 - Tenakee Springs, AK 52 mi58 min E 8 G 11 52°F 1013.5 hPa37°F
PLXA2 - 9451054 - Port Alexander, AK 67 mi71 min S 1 G 1.9 51°F 47°F1016.1 hPa
ELFA2 - 9452634 - Elfin Cove, AK 94 mi71 min 48°F 47°F1015 hPa

Wind History for Port Alexander, AK
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sitka - Sitka Airport, AK3 mi48 minE 610.00 miOvercast50°F41°F71%1015.1 hPa

Wind History from ASI (wind in knots)
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Last 24hrSW8SW8SW6SW6SW8SW10SW10SW6S4E6SE5CalmE8E6E8SE7SE5E5E8E10E12SE9S12
G20
E6
1 day agoSW11SW12SW14SW12SW12SW13NW4CalmNW4CalmE3E3NE3E3CalmE3CalmNW4NW4NW4W5W5SW7SW8
2 days agoSE12S23
G35
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S14S7SE4S7S5E7SE5S3E4E6S9SE5E7S6S9SE5SE7SE4SE6S13S8

Tide / Current Tables for Dog Point, Lisianski Peninsula, Sitka Sound, Alaska
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Dog Point
Click for Map
Thu -- 03:25 AM AKDT     Moonset
Thu -- 03:52 AM AKDT     1.94 feet Low Tide
Thu -- 04:25 AM AKDT     Sunrise
Thu -- 09:41 AM AKDT     7.66 feet High Tide
Thu -- 03:30 PM AKDT     Moonrise
Thu -- 03:51 PM AKDT     1.06 feet Low Tide
Thu -- 09:32 PM AKDT     Sunset
Thu -- 10:19 PM AKDT     9.56 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.64.93.32.31.92.53.65.16.67.57.675.742.51.41.11.73.15.17.18.79.59.3

Tide / Current Tables for Olga Point, Olga Strait, Sitka Sound, Alaska
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Olga Point
Click for Map
Thu -- 03:26 AM AKDT     Moonset
Thu -- 04:06 AM AKDT     1.94 feet Low Tide
Thu -- 04:25 AM AKDT     Sunrise
Thu -- 09:45 AM AKDT     7.56 feet High Tide
Thu -- 03:31 PM AKDT     Moonrise
Thu -- 04:05 PM AKDT     1.06 feet Low Tide
Thu -- 09:33 PM AKDT     Sunset
Thu -- 10:23 PM AKDT     9.46 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.85.13.52.41.92.33.44.96.37.37.575.84.22.71.51.11.52.84.76.88.59.49.3

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 (17,4,5,8)
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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.