Thursday, January18, 2018 L-36.com


Marine Weather and Tides
Kotlik, 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 9:45AMSunset 4:34PM Thursday January 18, 2018 4:40 AM AKST (13:40 UTC) Moonrise 10:38AMMoonset 6:30PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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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PKZ200 Norton Sound- 400 Am Akst Thu Jan 18 2018
Today..N winds 20 kt.
Tonight..N winds 20 kt.
Fri..N winds 15 kt.
Fri night..N winds 15 kt.
Sat..N winds 10 kt.
Sat night..N winds 15 kt.
Sun..N winds 20 kt.
Mon..N winds 15 kt.
PKZ200 Norton Sound- 400 Am Akst Thu Jan 18 2018
Today..N winds 20 kt.
Tonight..N winds 20 kt.
Fri..N winds 15 kt.
Fri night..N winds 15 kt.
Sat..N winds 10 kt.
Sat night..N winds 15 kt.
Sun..N winds 20 kt.
Mon..N winds 15 kt.

7 Day Forecast for Marine Location Near Kotlik, AK
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location: 63.05, -163.38     debug


Area Discussion for -
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Fxak69 pafg 181242
afdafg
northern alaska forecast discussion
national weather service fairbanks ak
342 am akst Thu jan 18 2018

Discussion
Much colder weather pattern setting up over northern alaska.

The 00z model suite today was in much better agreement with the
position and strength of an upper level low over the central north
slope. The 00z model suite initialized well against the 00z
surface analysis and verified well against the 06z surface
analysis. Model spread is reasonable through the weekend but still
remains high into next week as different model families handle the
change in weather pattern differently, and in particular where
exactly the long wave trough axis will set up next week. This will
have a significant impact on how cold temperatures will drop in the
interior next week. Clouds and weak southerly return flow over
the eastern interior will modify the cold airmass while clear
skies to the west of the trough axis will allow for strong
radiational cooling under mostly clear skies. Model concensus does
continue to indicate dropping temperatures this weekend and well
below normal temperatures next week.

Aloft at 500 mb the 516 dam low over the western north slope will
continue to weaken as it moves northwest into the chukchi sea.

Snow continues to diminish over the northern and western interior.

Strong west to northwest winds continue to push much colder
airmass over northwest alaska today. Strong winds and light snow
will reduce visibility in blowing snow over the western north
slope today and over the central north slope Friday. Strong
northerly gap winds will develop through the brooks range passes
Friday and continue into Saturday as cold high pressure builds
over the north slope. Low wind chill values will develop through
the brooks range passes and along the north slope coast Friday
and Saturday as temperatures drop and winds increase. Weak flow
aloft over central alaska Friday will give wave to a strong and
very cold long wave trough that will dig south and east over
western alaska Saturday and over central alaska Sunday. 850 mb
temperatures over fairbanks will drop from around 5 below this
morning to around 12 below Friday morning and drop to around 18
below Saturday. The cold airmass continues to pour over alaska
into early next week with 850 mb temperatures over fairbanks
dropping to around 22 below Sunday morning and around 25 below
Monday morning.

Models continue to struggle with the strength and position of the
long wave trough and consequently where the coldest temperatures
will develop next week. Clouds and weak southerly flow will
moderate the cold temperatures to the east of the long wave
trough while mostly clear skies to the north and west of the
trough axis will allow for strong radiational cooling and will
result in much colder temperatures. Where clouds remain and help
moderate the cold airmass surface temperatures in the 20s and 30s
below are expected over much of the interior. Areas where clouds
diminish could see temperatures in the 30s and 40s below or
colder. Continue to monitor.

Coastal hazard potential days 3 and 4... None.

Afg watches warnings advisories
Dense fog advisory for akz222.

Heavy freezing spray warning for pkz210.

Small craft advisory for pkz210.

Brisk wind advisory for pkz215-pkz220-pkz225-pkz230-pkz235-
pkz245.

Ccc jan 18


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Emmonak, Emmonak Airport, AK62 mi45 minNW 179.00 miLight Snow12°F9°F87%1011.9 hPa

Wind History from AEM (wind in knots)
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Last 24hrNW21NW19
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N15--NW17
1 day ago--E5E5E10E8SE7SE5S5CalmNW4NW5N5N7N8NW8NW8NW12NW14NW16NW18NW22NW17
G28
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2 days agoSE20
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SE18S18SE17S20S17S18S15S15S18
G23
S18S16S18S14S13S9S13SE13S15S13S14SE10SE8

Tide / Current Tables for Apoon Mouth, Yukon River, Norton Sound, Alaska
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Apoon Mouth
Click for Map
Thu -- 08:42 AM AKST     -0.46 feet Low Tide
Thu -- 11:01 AM AKST     Sunrise
Thu -- 11:37 AM AKST     Moonrise
Thu -- 05:07 PM AKST     Sunset
Thu -- 07:31 PM AKST     Moonset
Thu -- 11:46 PM AKST     3.96 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
43.632.31.50.80.3-0.2-0.4-0.4-0.300.40.70.91.11.41.72.12.52.93.33.73.9

Tide / Current Tables for Pikmiktalik River entrance, Norton Sound, Alaska
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Pikmiktalik River entrance
Click for Map
Thu -- 07:01 AM AKST     -0.16 feet Low Tide
Thu -- 11:00 AM AKST     Sunrise
Thu -- 11:36 AM AKST     Moonrise
Thu -- 05:02 PM AKST     Sunset
Thu -- 07:26 PM AKST     Moonset
Thu -- 10:01 PM AKST     4.57 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.832.21.40.80.3-0-0.2-0.10.20.60.91.21.51.722.42.93.33.84.24.54.64.4

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
npac_satellite

GOES Local Image of Alaska    EDIT
Geos

Ground Weather Radar Station Nome, 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.