Monday, August21, 2017 L-36.com


Marine Weather and Tides
Sitka and, 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 5:31AMSunset 8:29PM Sunday August 20, 2017 8:36 PM AKDT (04:36 UTC) Moonrise 3:12AMMoonset 7:06PM Illumination 1% Phase: Waning Crescent; Moon at 29 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- 759 Pm Akdt Sun Aug 20 2017 Updated
Tonight..SE wind 20 kt. Seas 4 ft. Showers and isolated Thunderstorms then rain late.
Mon..S wind 15 kt. Seas 3 ft. Rain.
Mon night..SE wind 15 kt. Seas 3 ft. Rain.
Tue..S wind 10 kt. Seas 2 ft or less. Rain.
Tue night..Light winds. Seas 2 ft or less.
Wed..Light winds. Seas 2 ft or less.
Thu..Light winds becoming S 10 kt. Seas 2 ft or less.
Fri..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 202305
afdajk
southeast alaska forecast discussion
national weather service juneau ak
305 pm akdt Sun aug 20 2017

Synopsis An atmospheric river with abundant moisture from the
remnants of dissipated typhoon banyan will advect moisture across
the western gulf and panhandle with periods of rain occurring
through Monday.

Short term Through Tuesday morning... Showers will continue
moving across the panhandle this evening. An atmospheric river
will advect abundant moisture across the panhandle the next few
days advecting moisture from the remnants of dissipated typhoon
banyan across the region. Rain will continue with periods of
heavy rain occurring at times primarily across the souther areas
of the panhandle. Temperatures will remain cool with cloudy skies
and rain continuing across the panhandle. Winds will remain light
to moderate across inland areas.

Only minor changes have been made to the forecast. The nam, gfs,
and ECMWF are in good agreement for the forecast the next few
days.

Long term Tuesday through Sunday as of 10 pm Saturday the
extended forecast remains cool, wet, and fall-like. Tuesday begins
with a weather front moving across the panhandle. Periods of heavy
rain are expected on Tuesday within the southern panhandle due to
enhanced moisture directed at the area from the remnants of
tropical storm banyan. Models slowed the progression of the
heaviest band of precipitation slightly from yesterday, with total
rainfall between 0.5 to 1.5 inches forecasted Tuesday. Greatest
values are expected near ketchikan and annette island. The outer
coast and far northern panhandle will have much lower rainfall
totals with possible breaks in precipitation as the front pushes
to the southeast Tuesday.

Wednesday and Thursday will likely be characterized by remnant
scattered shower activity over the panhandle with a break in
preciptiation likely sometime Thursday. Late Thursday night
another weather front will begin to move across the panhandle
bringing a return to rain. This front will keep conditions wet
once again next weekend. The front's exact arrival time is still
an area of uncertainty, but between late Thursday night and Friday
morning is currently the most probable.

Not many significant changes were made to the extended forecast.

Tuesday's QPF values were increased due to being in agreement with
a slowing of the heaviest band of precipitation. Tuesday's
forecast was nudged toward the 00z NAM with wpc input being used
for Wednesday and beyond as needed.

Aviation Marginal flight conditions due to ceiling forecast
for the late afternoon and into the evening. Rain spreading to the
panhandle with system associated with the former typhoon banyan.

A low level jet near the coast will lead to low level turbulence
overnight for the coast and then will move to the inner channels
toward morning as it move to the clarence and then stephens.

Marine An early season gale will develop in marine zone 52 as
the second front approaches the central gulf coast tonight.

Elsewhere small craft seas to 8 feet and winds of 25 to 30 kt
will impact the outside waters for much of the next twenty- four
hours.

Hydrology Moisture from banyan's remnants (up to 3 plus
standard deviations above atmospheric normals of ivt) will begin
to spread across all sections of the panhandle overnight. But the
most concentrated area of heavy rains continues to be forecasted
for the southern panhandle, tonight into early Tuesday. Looking
for a minor break in the rainfall afternoon to early evening over
the southern with light rain totals. We expect significant rises
in streams beginning tonight and continuing into Tuesday. Special
weather statements cover heavy rain and significant rises on
rivers, streams, and lakes. Flooding is not expected, but we will
continue to evaluate threats through the event.

Ajk watches warnings advisories
Public... None.

Marine... Gale warning for pkz052.

Small craft advisory for pkz022-036-041>043-051.

Bm jwa
visit us at http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ITKA2 3 mi48 min 58°F 57°F1008.1 hPa
PLXA2 - 9451054 - Port Alexander, AK 67 mi54 min S 5.1 G 8.9 55°F 49°F1010.8 hPa
ELFA2 - 9452634 - Elfin Cove, AK 94 mi48 min 54°F 56°F1008.6 hPa

Wind History for Port Alexander, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sitka - Sitka Airport, AK3 mi43 minSSE 97.00 miOvercast59°F53°F81%1008 hPa

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Last 24hrS5SE7SE5E5E4E6SE5CalmCalmCalmCalmCalmNW4NE3SE6SE11E12E9E7E12E10SE104S9
1 day agoE6E6E6E6E4E6E7E6E8SE8E5E4SE4E5E7SE3S4CalmS6S11S10S5E5S6
2 days agoSE5E4E3SE4CalmE5SE3CalmCalmW6S6S8S6E3E5E8E7E7E5E4SE5SE5CalmS6

Tide / Current Tables for Dog Point, Lisianski Peninsula, Sitka Sound, Alaska
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Dog Point
Click for Map
Mon -- 12:34 AM AKDT     11.17 feet High Tide
Mon -- 05:31 AM AKDT     Moonrise
Mon -- 05:41 AM AKDT     Sunrise
Mon -- 07:16 AM AKDT     -1.93 feet Low Tide
Mon -- 10:31 AM AKDT     New Moon
Mon -- 01:35 PM AKDT     9.89 feet High Tide
Mon -- 07:25 PM AKDT     1.20 feet Low Tide
Mon -- 08:26 PM AKDT     Sunset
Mon -- 08:33 PM AKDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.9119.87.54.51.5-0.8-1.9-1.50.22.85.78.29.69.88.76.74.42.41.31.42.85.17.7

Tide / Current Tables for Olga Point, Olga Strait, Sitka Sound, Alaska
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Olga Point
Click for Map
Mon -- 12:38 AM AKDT     11.07 feet High Tide
Mon -- 05:32 AM AKDT     Moonrise
Mon -- 05:41 AM AKDT     Sunrise
Mon -- 07:30 AM AKDT     -1.93 feet Low Tide
Mon -- 10:31 AM AKDT     New Moon
Mon -- 01:39 PM AKDT     9.79 feet High Tide
Mon -- 07:39 PM AKDT     1.20 feet Low Tide
Mon -- 08:26 PM AKDT     Sunset
Mon -- 08:34 PM AKDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.8119.97.74.92-0.4-1.8-1.7-0.32.35.37.99.59.78.86.94.72.71.41.32.44.67.3

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 (0,6,7,8)
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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.