Tuesday, January22, 2019 L-36.com


Marine Weather and Tides
Sitka and, AK

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 8:19AMSunset 3:59PM Tuesday January 22, 2019 3:28 AM AKST (12:28 UTC) Moonrise 6:35PMMoonset 9:26AM Illumination 97% Phase: Waning Gibbous; Moon at 16 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- 256 Pm Akst Mon Jan 21 2019
Tonight..SE wind 20 kt becoming N late. Seas 4 ft. Rain early in the evening, then rain and snow.
Tue..N wind 15 kt. Seas 3 ft in the morning then 2 ft or less.
Tue night..N wind 15 kt. Seas 3 ft in the evening then 2 ft or less.
Wed..SE wind 10 kt. Seas 2 ft or less.
Wed night..SE wind 15 kt. Seas 3 ft. Rain.
Thu..S wind 15 kt. Seas 3 ft.
Fri..S wind 15 kt. Seas 3 ft.
Sat..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 212330
afdajk
southeast alaska forecast discussion
national weather service juneau ak
230 pm akst Mon jan 21 2019

Short term through Tuesday night ... A gale force low will
approach the southern outer coast late tonight, then stall in the
vicinity of CAPE decision on Tuesday. Associated front will spread
precipitation in over the southern half of the panhandle through
the night even as precipitation diminishes over the northern half.

What is left of this front will move north along the windward side
of the coast mountains Tuesday and Tuesday night while weakening.

Precipitation type will be in the form of rain where precipitation
is most likely and forecast to be heaviest. Later tonight, the
rain snow line should migrate south from berner's bay to frederick
sound before moving back north again tomorrow. Saw some freezing
rain in the yakutat area earlier today and have included a chance
of this returning tonight before pop diminishes by morning.

High end gale force winds connected with this low will result in
strong wind gusts for zones 27 and 28 this evening. Southern
marine zones will see 45 kts out of the southeast this evening
with an abrupt shift to the southwest from CAPE ommaney south as
the center of circulation closes the coast.

Southerly southeasterly gale force winds are also forecast for
portions of chatham and sumner straits as well as clarence strait.

Used a blend of GFS and NAM for updates to pressure, wind, pop,
and qpf. Adjustments to temperatures from both NAM and GFS mos.

Biggest changes to temperatures were to decrease overnight lows near
the haines border and white pass by 12 to 18 degrees to get them
close to what they were last night since no change in airmass is
expected tonight. Overall forecast confidence is average.

Long term Wednesday through Monday as of 10 pm
Saturday ... Highly amplified longwave pattern to develop over the
gulf of alaska and western north america Wednesday, lasting
through the weekend. There is good agreement between ensemble
guidance and to some extent their operational counterparts on the
development of enhanced mid and upper level ridging along with
west coast of north america with deep upstream troughing over the
bering sea. This will spell a period of warm and wet weather for
se ak Wednesday night through the early part of the weekend.

Guidance has not resolved the details of the individual systems
ejecting northward into the gulf out of the longwave trough to the
west. Thus, while the forecast calls for warm and wet conditions
in general, the details as to when the heaviest precipitation and
the strongest winds will occur is still to be determined.

For later in the weekend into early next week, there are some
indications that the whole longwave pattern will begin to
retrograde, with the strongest moisture transport shifting west of
se ak. A few of the operational solutions even close off a upper
high over the gulf by Monday which could lead to very stable and
potentially foggy conditions. While this remains to be seen, think
with the retrograding longwave pattern, at least some drying can
be expected by late weekend with some modest cooling possible.

Ajk watches warnings advisories
Public... Strong wind from 6 pm this evening to midnight akst tonight for
akz027-028.

Marine... Gale warning for pkz033-035-036-041>043.

Small craft advisory for pkz012-013-021-022-051-052.

Small craft advisory due to seas for pkz053.

Fritsch del
visit us at http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SHXA2 2 mi36 min SW 2.9 G 8 42°F 1001.8 hPa28°F
ITKA2 3 mi41 min 46°F1001.8 hPa
STXA2 5 mi36 min ENE 5.1 G 11 40°F 1001.7 hPa30°F
PGXA2 41 mi36 min E 1.9 G 7 37°F 33°F
46084 - Cape Edgecumbe Buoy AK 48 mi39 min ENE 9.7 G 14 43°F 45°F11 ft1001.4 hPa (+3.9)37°F
PLXA2 - 9451054 - Port Alexander, AK 67 mi47 min N 13 G 19 38°F 44°F1001.9 hPa
ELFA2 - 9452634 - Elfin Cove, AK 94 mi41 min 44°F1005.6 hPa

Wind History for Port Alexander, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sitka - Sitka Airport, AK3 mi36 minE 1010.00 miMostly Cloudy44°F30°F60%1001.7 hPa

Wind History from ASI (wind in knots)
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Last 24hrE13SE9SE10E10SE8SE9SE7SE8E11E10SE9SE10E9E8E7E6SE9E11
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--E10
1 day agoE5SE6E5E6SE6E6E6E10E6E53E4E6E6E7E6E7E6SE6E8E6SE4E7SE7
2 days agoN11N7N5N5NE3E3E3CalmCalmE3CalmE3E4E5E4E5S3E4E4E5CalmE4E5E5

Tide / Current Tables for Dog Point, Lisianski Peninsula, Sitka Sound, Alaska
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Dog Point
Click for Map
Tue -- 01:40 AM AKST     10.56 feet High Tide
Tue -- 07:16 AM AKST     2.49 feet Low Tide
Tue -- 08:19 AM AKST     Sunrise
Tue -- 09:26 AM AKST     Moonset
Tue -- 01:09 PM AKST     12.52 feet High Tide
Tue -- 04:07 PM AKST     Sunset
Tue -- 06:35 PM AKST     Moonrise
Tue -- 07:58 PM AKST     -2.46 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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8.610.210.59.57.55.33.52.52.84.46.89.411.512.51210.17.13.60.5-1.7-2.5-1.60.73.8

Tide / Current Tables for Olga Point, Olga Strait, Sitka Sound, Alaska
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Olga Point
Click for Map
Tue -- 01:44 AM AKST     10.46 feet High Tide
Tue -- 07:30 AM AKST     2.49 feet Low Tide
Tue -- 08:20 AM AKST     Sunrise
Tue -- 09:27 AM AKST     Moonset
Tue -- 01:13 PM AKST     12.42 feet High Tide
Tue -- 04:07 PM AKST     Sunset
Tue -- 06:35 PM AKST     Moonrise
Tue -- 08:12 PM AKST     -2.46 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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8.31010.49.57.85.63.82.62.746.3911.312.41210.37.44.11-1.4-2.4-1.90.13.2

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (7,2,3,4)
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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.