Wednesday, April8, 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 6:35AMSunset 9:09PM Wednesday April 8, 2020 9:33 AM AKDT (17:33 UTC) Moonrise 10:09PMMoonset 6:23AM Illumination 99% Phase: Full Moon; 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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PKZ240 Cape Halkett To Flaxman Island- 230 Am Akdt Wed Apr 8 2020
Today..S winds 10 kt.
Tonight..S winds 10 kt.
Thu..SW winds 15 kt.
Thu night..SW winds 15 kt.
Fri..SW winds 10 kt.
Fri night..W winds 10 kt.
Sat..SE winds 15 kt.
Sun..SW winds 15 kt.
PKZ200 Norton Sound- 232 Am Akdt Wed Apr 8 2020
Today..SW winds 10 kt.
Tonight..S winds 10 kt.
Thu..SE winds 15 kt. Freezing fog.
Thu night..S winds 25 kt. Freezing fog. Snow.
Fri..S winds 25 kt. Blowing snow.
Fri night..S winds 20 kt.
Sat..SE winds 15 kt.
Sun..SE winds 15 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 081027 AFDAFG

Northern Alaska Forecast Discussion National Weather Service Fairbanks AK 227 AM AKDT Wed Apr 8 2020

SYNOPSIS. Across Northern Alaska, generally quiet conditions are expected today, while there is a chance of light snow, generally 1 to 2 inches from Northway south. Another storm with the potential for heavy snow, mixed precipitation, strong winds, and elevated water along the coast south of the Bering Strait will take aim at Western Alaska Thursday into Saturday.

DISCUSSION. Aloft, at 500 mb, a deep long wave trough extends south across the state. As the long wave trough axis moves eastward, a series of shortwaves and lows will rotate through the flow. An upper level low located in the northern Gulf of Alaska this morning will continue eastward and weaken today as it moves into the Yukon Territories. A stronger upper level low is moving across the Chukchi Sea with the axis extending from northeast of Wrangel Island through the Bering Strait to St Lawrence Island. The low will continue eastward with the axis stretching northwest of Utqiagvik to Anaktuvuk Pass to SE Alaska. The low will continue eastward through Friday, with nearly zonal flow developing across the center of the state. Another low will move north into the Western Bering Sea on Friday.

Surface . A 1001 mb low 300 nm NE of Wrangel Island with a trough extending south across the Chukchi Sea to the Bering Strait to just north of St Lawrence Island. The low weakens as it moves eastward to be a 1003 mb low located 400 nm NW of Utqiagvik this afternoon with the trough extending south to the Bering Strait. The low continues to weaken as it moves east to be a 1014 mb low 275 nm N of Utqiagvik by Thursday afternoon, weakening to a trough by Friday afternoon. High pressure quickly builds in from the west, north of the Brooks Range Friday afternoon.

A 989 mb low 150 nm S of Seward this morning will move northeast to be a 1000 mb low 50 nm S of Yakutat this afternoon, with a 998 mb triple point low developing near Whitehorse. The low near Yakutat will weaken through Thursday and begin to dissipate in place, while the low near Whitehorse continues

A 998 mb low 250 nm SW of Shemya this afternoon will deepen to 995 mb Thursday afternoon as it moves into the Western Bering Sea. The low will continue NNE to be a 997 mb low 375 nm NW of the Pribilof Islands by Friday morning and a 1003 mb low located 275 nm W of St Matthew Island by Friday afternoon. As the low moves across the Bering it will push a warm front north across Western Alaska Thursday and Friday.

Models . The 00Z model suite initialized well against the 00Z RAOBS and the 00Z surface obs. Overall, models are in good agreement with the overall synoptic pattern. The 00Z model solutions exhibit notable differences in the placement of QPF and heaviest snowfall, with the heaviest snowfall seemingly further east. Leaned towards the NAM for winds to bring in some stronger winds along the Y-K Delta coast and Norton Sound. Leaned towards an overall blend for precip.

North Slope and Brooks Range: A weather front moving east across the North Slope this afternoon into Thursday. As the front moves east it will bring flurries and scattered snow showers from Utqiagvik west this afternoon and tonight. Snow accumulation will be light. West to southwest winds 10 to 20 mph are expected.

West Coast and Western Interior: Flurries to a few snow showers possible along a line from Anvik to Huslia and east today, as a weak trough moves across and a shortwave aloft passes overhead. Not much in the way of accumulation is expected. Scattered snow showers expected this afternoon through Thursday from the northwest Chukchi Sea Coast to the Seward Peninsula and east to Ambler as a front moves through. A warm front will push north across Western Alaska Thursday into Saturday, bringing potentially heavy snow in the favored upslope areas, mixed precip south of the Seward Peninsula, and stronger winds. Strongest winds expected south of the Seward Peninsula where winds may gust to 40 mph. Have held off on issuing hazard products given the lower confidence in exact placement of heavy snowfall. Temperatures warm through the weekend.

Central and Eastern Interior: A low moving across the northern Gulf of Alaska will bring snow to the Upper Tanana Valley Wednesday. Elsewhere, flurries to a few snow showers will be possible across the southern Interior through tonight as a weak trough and a shortwave aloft moves overhead. Heaviest snowfall accumulation will be from Northway south where 1 to 2 inches will fall, but little in the way of accumulation is expected elsewhere across the Interior. Temperatures will trend upwards through the week.

Coastal Hazard Potential Days 3 and 4 . A low pressure system moving north and east out of the Southern Bering Sea into the Central and Eastern Bering sea will produce strong southwest winds that will push into the Eastern Bering Sea, the lower YK Delta Coast as well as Norton Sound late Thursday and Friday. Continue to monitor for potential for strong winds to push water on top of the ice through open leads.

AFG WATCHES/WARNINGS/ADVISORIES. Brisk Wind Advisory for PKZ225.

APR 20


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRDA2 - 9497645 - Prudhoe Bay, AK 49 mi46 min SW 8 G 9.9 -11°F 29°F1014.2 hPa

Wind History for Prudhoe Bay, AK
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kuparuk, Ugnu-Kuparuk Airport, AK13 mi49 minS 310.00 miMostly Cloudy-13°F-23°F57%1014.9 hPa

Link to 5 minute data for PAKU

Wind History from AKU (wind in knots)
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Last 24hrW22
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W19W24W21W19W18W14W15W16W15----------------S6S5S5S5S2S3
1 day agoW19SW18SW14SW22
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2 days agoSE5E322NE8E5E6--2W25
G29
----------------SW17SW18------SW17

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.