Monday, January20, 2020
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Marine Weather and Tides
Prudhoe Bay, AK

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 10:09AMSunset 3:54PM Monday January 20, 2020 7:50 PM AKST (04:50 UTC) Moonrise 12:00AMMoonset 12:00AM Illumination 17% Phase: Waning Crescent; Moon at 26 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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PKZ240 Cape Halkett To Flaxman Island- 1254 Pm Akst Mon Jan 20 2020
.brisk wind advisory in effect from late Monday night through early Tuesday morning...
Tonight..E winds 20 kt increasing to 25 kt.
Tue..E winds 20 kt.
Tue night..E winds 15 kt.
Wed..W winds 15 kt.
Wed night..W winds 15 kt.
Thu..W winds 15 kt.
Thu night..W winds 15 kt.
Fri..W winds 15 kt.
Sat..W winds 15 kt.
PKZ200 Norton Sound- 104 Pm Akst Mon Jan 20 2020
Tonight..SE winds 10 kt.
Tue..E winds 10 kt.
Tue night..W winds 10 kt.
Wed..SW winds 10 kt.
Wed night..W winds 15 kt.
Thu..N winds 15 kt.
Thu night..N winds 10 kt.
Fri..N winds 15 kt.
Sat..N winds 20 kt.


7 Day Forecast for Marine Location Near Prudhoe Bay, AK
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location: 70.46, -149.44     debug


Area Discussion for -
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FXAK69 PAFG 202158 AFDAFG

Northern Alaska Forecast Discussion National Weather Service Fairbanks AK 1258 PM AKST Mon Jan 20 2020

Synopsis. A little snow out west as a decaying weather front moves into the Western Interior and dissipates. A second front will move to the coast tonight and move northeast across the state Tuesday and Wednesday bringing at least a chance of snow to most locations. Temperatures on the rise for at least a couple days with some increased cloudiness and weak south flow. Temperatures falling late in the week and through the weekend. Winds generally light and variable in the interior with the exceptions of the Delta Junction area, and the Bering Strait Coast where east to southeast winds to 25 mph will prevail today before diminishing. No change in the Arctic as a band of stratus will bring low clouds and patchy fog to the Central Arctic Coast at times. As flow switches back to northeast and east this evening the stratus and fog will impact the Eastern Arctic Coast as well.

DISCUSSION.

Models . Excellent run to run continuity, even into the extended periods with the 20/12Z solutions as they develop an omega block pattern over the area late in the week. Surface solutions initialized well against 20/15Z local analysis, but major features strength continues to be amiss. Highs in the Upper Tanana Valley and Upper Yukon Flats continue to initialize about 5 mb high than the solutions, while the lows to the west are about 3 mb weaker than the 20/12Z solutions. Will lean on an even blend including the current forecast database. Will need to make some minor adjustments locally to the temperatures to match with current temperatures and trends.

Aloft . At 500 hpa . Ridging associated with a 521 dam high over Banks Island extends northwest over the Beaufort Sea. Weak ridging is pushing northwest over the Interior with the axis lying from Eagle to Point Hope. Troughing that extended east over the nearshore waters yesterday from a 493 dam low 200 nm south of Wrangel Island has moved to lie along 75N with a 504 dam low 300 nm north of Wainwright, and the low near Wrangel Island has moved to 200 nm west of Wrangel Island. A 494 dam low has move over the Gulf of Anadyr with troughing extending southeast over Nunivak Island and southern Kodiak Island this afternoon. By Tuesday afternoon the ridging over the state will slide north over 75N, while the troughing that was over the Arctic will slide north to 80N as the low west of Wrangel Island moves to 300 nm northwest of the Island. The low over the Gulf of Anadyr will start to fill and move north as the trough moves northeast to lie from the Chukotsk Peninsula over Emmonak to Anchorage to Yakutat. The trough will broaden by Wednesday afternoon as the primary shortwave moves to lie from Wainwright to Old Crow YT. A second shortwave will move over the West Coast to lie from Shishmaref to King Salmon. Ridging moves over the Western Bering Sea Wednesday morning, and will be over the Central Bering Sea Wednesday afternoon as it continues to build north At 850 hpa. -10C isotherm lies from Chalkyitsik to Dillingham with a pool of -20C over the Upper Tanana Valley. Temperatures in the Upper Tanana Valley will warm slightly, otherwise not significant change over the forecast area until Wednesday morning when cold air will push southeast over the West Coast and Western Interior. The -20C isotherm will lie from Point Lay to Unalakleet to Cape Romanzof by Wednesday afternoon, and pushes southeast over most of the forecast area by Thursday afternoon.

Surface . High pressure continue to dominate over Interior Alaska with low pressure over the Gulf of Alaska and the West Coast. High pressure will weaken allowing the decaying weather fronts to move northeast across the state Tuesday and Wednesday. 1014 mb highs are in the Upper Tanana Valley and Upper Yukon Flats. Leeside troughing is redeveloping north of the Brooks Range as the trough that was over the area Sunday has moved offshore and will dissipate. The low that was southeast of Wrangel Island yesterday has moved to 100 nm northwest of the Island. Troughing extends southeast from the low to a dissipating 990 mb low in the Bering Strait, then southwest over Gambell to a 989 mb low 100 nm west of St Matthew Island. A low that was in the southern Gulf of Alaska has moved into Southcentral Alaska at 991 mb and will weaken and dissipate over Prince William Sound by Wednesday afternoon. A 996 mb low will develop in the leeside troughing in the Arctic Plain and will lift northeast offshore Tuesday evening.

Arctic Coast and Brooks Range . Some stratus, flurries, and patchy dense fog along the Central coast, spreading to the Eastern Coast as the front swings around to northeast and east as low pressure build east across the Plains. A front over the Chukchi Sea will spread some flurries or light snow to the Northwest Coast tonight. Winds 5 to 20 mph across the area. Temperatures warming tonight across the area, then start cooling Wednesday.

West Coast and Western Interior . Decaying weather front spreading flurries or light snow across most of the area west of a line from Noatak to Galena to Anvik. Snow will spread inland Tuesday and Tuesday night. Snowfall amounts will range up to 2 inches. Winds generally light and variable inland and northeast to southeast along the coast at 5 to 15 mph. Temperatures warmer through Tuesday, then cooling.

Central and Eastern Interior . Increasing clouds and warmer temperatures. Increasing chances of snow starting Tuesday evening. Winds generally light and variable, the exception will be the Delta Junction area where winds will be gusting to 25 to 30 mph through tonight, then diminish to 5 to 10 mph Tuesday.

Coastal Hazard Potential Days 3 and 4 . None.

Extended forecast for days 4 to 7 . Decreasing chances of precipitation with more breaks in the clouds. Cold air digs back south over the state with temperatures falling through the weekend. A front moving around a low in the Gulf of Alaska will move into the Southeast Interior Sunday spreading snow northwest into the Tanana Valley east of Tanana.

AFG WATCHES/WARNINGS/ADVISORIES.

Brisk Wind Advisory for PKZ210-PKZ220-PKZ240-PKZ245.



SDB JAN 20


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRDA2 - 9497645 - Prudhoe Bay, AK 49 mi56 min -6°F 29°F1001.2 hPa

Wind History for Prudhoe Bay, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kuparuk, Ugnu-Kuparuk Airport, AK13 mi65 minENE 410.00 miA Few Clouds-18°F-23°F75%1002 hPa

Link to 5 minute data for PAKU

Wind History from AKU (wind in knots)
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Last 24hr----------------S63S323E5E5SE43SE5E3E4E7E4E5E4
1 day ago------------------W10W7W6W8W11W15--W15W12W11W12W9W6W7W8
2 days ago------------------NE5E8E8E9--E5E8NE13----NE8E9E10SE6NE5

Tide / Current Tables for Cross Island (Dinkum Sands), Alaska
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for
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Weather Map
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wmap_P
GEOS Local Image of Alaska    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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station Pedro Dome, AK
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weather_mapweather_map weather_map

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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 numerous 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.