Sunday, December15, 2019
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Marine Weather and Tides
Unalakleet, AK

Version 3.4
NOTICE
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.
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Sunrise 10:05AMSunset 3:43PM Sunday December 15, 2019 12:30 PM AKST (21:30 UTC) Moonrise 7:16PMMoonset 1:16PM Illumination 83% Phase: Waning Gibbous; Moon at 19 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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7 Day Forecast for Marine Location Near Unalakleet, AK
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location: 63.88, -160.76     debug


Area Discussion for -
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FXAK69 PAFG 151448 AFDAFG

Northern Alaska Forecast Discussion National Weather Service Fairbanks AK 548 AM AKST Sun Dec 15 2019

SYNOPSIS. Highlights, Areas of freezing rain through today in the Yukon Delta south and west of Anvik. Breezing conditions through Alaska Range Passes and at Delta Junction and Eagle from Sun through Mon but expected to remain less than advisory strength. East winds 25-35 kt expected to develop over the Arctic Coast Mon night and continue into Tue could cause blowing snow issues, but due to the lack of new loose snow on the ground after the last strong winds there, we do not expect blizzard conditions.

Aloft . The long wave pattern consists of a high amplitude ridge over Eastern Alaska and Western Canada, and a high amplitude trough over the Bering Sea and Western Gulf of Alaska. A series of short wave troughs will move into this long wave causing the long wave to dig east across the Gulf of Alaska and cut off the ridge aloft on from Mon into Tue. This pattern will keep the Interior and North Slope dry through Mon, with precip confined to the West Coast south of the Bering Strait.

A deep and very cold low aloft which is the center of the polar vortex, and now located over the Canadian Archipelago, will drift west to Banks Island by Wed and form a cold trough over Northern Alaska, which will bring cause temperatures to fall to colder than normal late by late in the week.

Surface . A trough of low pressure that lies from Demarcation Point to Point Lay will persist through Tue. High pressure north of the Arctic Coast of Alaska will build through Tue. This is causing light east winds along with stratus and fog now. Winds will increase tonight and Mon. By Mon night expect east winds 30-40 mph across the Arctic Coast along with reduced visibility in blowing snow. Due to the lack of new loose snow on the ground after the last strong winds occurred there last week, we do not expect blizzard conditions. Will issue SPS about this.

High pressure over the Yukon Territory will persist through Mon and then weaken. This is causing southeast winds gusting to 25 mph at Eagle and Delta Junction now that will persist into Mon and then slowly decrease. This is also causing south winds gusting 30 mph through Alaska Range Passes that will decrease Mon.

A 1000 mb low 200 NM west of Point Hope will move to near Wrangel Island as a 1008 mb low by 3pm Mon. An Arctic Cold front that stretches from this low south to the Bering Strait and then to the Southeast Bering Sea will persist into Mon. There is snow along this front that will persist into Mon.

An occluded front that lies from Cold Bay to the YK Delta will move west and merge with the arctic front this afternoon. This is now causing areas of light snow from the Seward Pen south, and areas of freezing rain and snow southwest of Anvik. This precip will move west with the front this morning.

A strong low in the northwest Gulf of Alaska will move to the Alaska Peninsula Sun afternoon and then weaken through Mon. An occluded front with this low now lies over the Alaska Peninsula and gulf of Alaska will move to Cape Newenham to Iliamna by 3pm Sun, then to Nunivak Island to Iliamna to Yakutat by 3am Mon, to Cape Newenham to Denali to Northway by 3am Tue and then weakening in place. This will spread more more snow and freezing rain to the area southwest of Anvik by this afternoon, with the precip there ending by this evening. Expect mid level clouds and flurries to spread north with the front over the Alaska Range Mon night and over the southern Interior Tue.

DISCUSSION. Models initialize well aloft and show similar solutions through Tue.

There are slight differences in precip location and timing, and we will use a blend of the NAM/GFS/ECMF precip to account for this. That being said, there areas ares of precip occurring now over the area west of Anvik and Golovin that is not accounted for by the NAM, and only somewhat accounted for the the GFS and ECMF. Since radar indicates precip from Russian Mission west now, and this could contain freezing rain, and we will issue an WSW for zone 214 and 215 south and west of Anvik to account for this and make likely precip from Russian Mission west this morning and into this afternoon. Otherwise all chances of precip will remain west of Anvik to Golovin through Mon night, with a slight chance of snow in the SE Interior Mon night and Tue as a front makes its way north.

At the surface at 06Z, models verify well on most low centers, but the NAM and GFS verify several mb too weak on the high pressure over the southern Yukon Territory and the Copper River Basin. There is a tighter gradient and stronger winds through the Alaska Range and down the Tanana Valley and at Eagle than models indicate as a result. Expect slightly stronger winds than models indicate to remain in those areas through Sun night as a result.

Coastal Hazard Potential Days 3 and 4 . None.

AFG WATCHES/WARNINGS/ADVISORIES. Winter Weather Advisory for AKZ214-AKZ215.

Heavy Freezing Spray Warning for PKZ210.

Brisk Wind Advisory for PKZ245.

JB DEC 19


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ULRA2 1 mi60 min 1001.3 hPa

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Unalakleet, AK3 mi34 minENE 17 G 2110.00 miFair28°F18°F66%1001.6 hPa

Link to 5 minute data for PAUN

Wind History from AUN (wind in knots)
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Tide / Current Tables for St. Michael, Alaska
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St. Michael
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Sun -- 08:48 AM AKST     -0.50 feet Low Tide
Sun -- 11:26 AM AKST     Sunrise
Sun -- 02:16 PM AKST     Moonset
Sun -- 04:00 PM AKST     Sunset
Sun -- 08:25 PM AKST     Moonrise
Sun -- 11:51 PM AKST     4.85 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.84.43.72.81.910.3-0.2-0.4-0.5-0.4-0.10.30.60.91.21.41.82.22.83.444.54.8

Tide / Current Tables for North Bay, Stuart Island, Norton Sound, Alaska
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North Bay
Click for Map
Sun -- 08:26 AM AKST     -0.36 feet Low Tide
Sun -- 11:30 AM AKST     Sunrise
Sun -- 02:19 PM AKST     Moonset
Sun -- 03:59 PM AKST     Sunset
Sun -- 08:26 PM AKST     Moonrise
Sun -- 11:29 PM AKST     3.50 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.432.41.81.10.50.1-0.2-0.3-0.3-0.200.30.50.70.91.11.41.82.22.633.33.5

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 Bethel, AK
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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 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.