Saturday, April4, 2020
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Marine Weather and Tides
Hooper 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 7:07AMSunset 8:56PM Saturday April 4, 2020 6:48 PM AKDT (02:48 UTC) Moonrise 1:35PMMoonset 5:25AM Illumination 91% Phase: Waxing Gibbous; Moon at 12 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 Hooper Bay, AK
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location: 61.82, -166.08     debug


Area Discussion for -
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FXAK69 PAFG 042320 AFDAFG

Northern Alaska Forecast Discussion National Weather Service Fairbanks AK 320 PM AKDT Sat Apr 4 2020

SYNOPSIS. The active weather pattern over Northern continues through early next week, as a series of weather systems move across the area. Across the West Coast and Western Interior, heavy snowfall, especially in the favored upslope areas, is expected, with rain or freezing rain mixing in with the snow from Kotzebue south. Strong and gusty winds, are expected to develop on the back side of the low tonight and into Sunday causing blowing snow. Across the Central and Eastern Interior, widespread snowfall is continues with rain expected to mix in with the snow across the Southern Interior. Winds increase across the Interior by Sunday, causing blowing snow over summits. A coastal surge will impact the West Coast with the possibility of water moving overtop the ice and then inland during the weekend.

DISCUSSION. Models . The 12Z model suite initialized well against the 12Z surface analysis and verified well against the 18z surface analysis. Models continue to struggle with the evolution, track and strength of a strong low in the north Bering Sea and subsequent triple point that develops over the Seward Peninsula and mover over the Central Interior and Brooks Range. Significant differences emerge in the model solutions on the strength and track of the triple point low as early as tomorrow afternoon. The GFS remains the outlier as it moves the upper low across northern Alaska, maintaining more energy. We continued to lean towards the NAM for winds, with local edits to increase winds across the Y-K Delta and across the Interior. Blended in the SREF for pops to capture higher values.

Aloft at 500 mb, a high pressure ridge over Central and Eastern Alaska will merge with a 555 dam high pressure ridge centered just east of Banks Island as a 496 dam low centered near the pole with a deep longwave trough extending south through the Bering Strait and Central Bering Sea will continue to deepen and push slowly east into the Eastern Bering and over the West Coast of Alsaka through early next week. A strong shortwave troughs will move north and east through the longwave and will push a 504 dam low east over the Brooks Range with a trailing strong shortwave south of the low pushing over the West Coast and Western Interior on Sunday and over the Central and Eastern Interior on Tuesday. Much colder air aloft will push eastward over Alaska with the 850 mb temperature over Fairbanks dropping from around 4 below this evening to 7 below Sunday morning and near 20 below by Monday morning. Strong and gusty winds at the surface will accompany the cold air aloft and will produce blowing and drifting snow over much of the West Coast and Interior especially the highway Summits in the Interior.

Surface . A 985 mb low currently 250 nm southwest of the Bering Strait will continue to push north and east to be over the Bering Strait Sunday morning and along the Northwest Coast and Western North Slope on Sunday morning. The low will deepen again as it taps some cold air as it pushes just south of Point Barrow tomorrow evening. As the low continues to push east expect strong winds and falling snow to produce reduced visibilities in blowing snow to the East of Prudhoe Bay. A Winter Weather Advisory for blowing snow has been issued for zone 204 beginning at midnight tonight. A triple point low develops over the Western Seward Peninsula this evening and will and will push east into the Eastern Seward Peninsula Sunday and the Western Interior Monday Morning. The low will continue to weaken into a trough over the Central Brooks Range Monday afternoon and will continue to move north east over the the Eastern Brooks Range Monday night.

North Slope and Brooks Range: A series of weather systems moving across the region will bring more snow through the weekend. The heaviest snowfall will occur on the southern facing slopes of the Brooks Range. From Utqiagvik west, 3 to 5 inches of snow are possible through weekend. East of Utqiagvik snowfall totals will generally be less than an inch. Gusty south winds continue in the passes of the eastern Brooks Range tonight, with gusts to 40 mph possible. Maintained the Winter Weather Advisory for zone 206 for blowing snow in the passes of the eastern Brooks Range and added a Winter Weather Advisory for zone 204 where strong westerly winds gusting to 55 mph wrapping around a deepening low north of the Eastern Arctic Coast will produce reduced visibiltiy in blowing snow east of Prudhoe Bay.

West Coast and Western Interior: The latest in a series of weather fronts is moving north and east across the West Coast and Western Interior this afternoon, bringing a mix of rain and snow to the region. A strong low will move over St Lawrence Island this evening to Kotzebue Sound by Sunday and then weaken Sunday night. This system will produce heavy snowfall, especially in the favored upslope areas, strong winds, and blowing snow. Rain or freezing rain may mix in with snow at times this evening, primarily from Kotzebue south, before precip transitions to all snow by late tonight. Strong winds will develop tonight and Sunday on the back side of the low, with gusts to near 60 mph possible across the Y-K Delta and Norton Sound. This will cause areas of blowing snow likely reducing visibility to less than half a mile at times.

Central and Eastern Interior: A weather front moving in from the west continues to bring widespread snowfall to the Interior this afternoon and will continue into Monday. The heaviest snowfall is expected to occur from Tanana north. The Middle Tanana Valley could see an additional 1 to 3 inches of snow tonight and an additional 1 to 2 inches on Sunday, with the highest amounts in the hills north of Fairbanks. Rain may mix with snow at times across the southern Interior and could result in lower snowfall totals. Southwest winds increase late tonight and will continue into Monday, with gusts to 30 mph. This will result in blowing and drifting snow, especially across the summits of the Interior. In the passes of the Alaska Range, southerly gap winds continue to increase this evening, peaking overnight with gusts to 50 mph in the western Alaska Range passes and 45 mph in the eastern Alaska Range passes. The winds are expected to diminish Sunday morning an are expected to remain below wind advisory criteria.

Coastal Hazard Potential . The ongoing strong weather system that is currently affecting the west coast will continue through this weekend. This storm has the potential to cause elevated water levels along the coast. As water levels rise there is the potential to push water on top of the ice through open leads and along the coast where shorefast ice is breaking up. Areas around Norton Sound and along the Yukon Delta will be most susceptible as the low moves inland.

FIRE WEATHER. None.

AFG WATCHES/WARNINGS/ADVISORIES. Coastal Flood Advisory for AKZ211-AKZ212.

Winter Storm Warning for AKZ207-AKZ208-AKZ209-AKZ210-AKZ211- AKZ213-AKZ217-AKZ218-AKZ219.

Winter Weather Advisory for AKZ204-AKZ206-AKZ212-AKZ214-AKZ215- AKZ216-AKZ220-AKZ221-AKZ222.

Gale Warning for PKZ200-PKZ210-PKZ220-PKZ225.

Brisk Wind Advisory for PKZ215-PKZ230-PKZ235-PKZ240.

CCC APR 20


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for PACZ

Wind History from ACZ (wind in knots)
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Last 24hr--------------------------------------------S19
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1 day ago--SW5SW5W4SW4SW3CalmCalmN6CalmNE3CalmCalmCalmCalmN4SE4Calm------------
2 days ago--N18N17N18NE16NE17NE15NE16NE15NE15NE15NE13NE14NE14NE9NE7NE10NE9SW3SW3CalmSW4SW5SW6

Tide / Current Tables for Cape Romanzof, Alaska
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Cape Romanzof
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Sat -- 04:21 AM AKDT     0.03 feet Low Tide
Sat -- 08:14 AM AKDT     Sunrise
Sat -- 08:24 AM AKDT     Moonset
Sat -- 11:51 AM AKDT     6.63 feet High Tide
Sat -- 04:35 PM AKDT     Moonrise
Sat -- 05:21 PM AKDT     1.35 feet Low Tide
Sat -- 10:01 PM AKDT     Sunset
Sat -- 11:40 PM AKDT     5.34 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.53.31.90.80.10.10.823.34.75.86.46.664.83.42.21.41.52.133.94.75.2

Tide / Current Tables for Kokechik Bay, Cape Romanzof, Alaska
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Kokechik Bay
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Sat -- 04:46 AM AKDT     0.05 feet Low Tide
Sat -- 08:14 AM AKDT     Sunrise
Sat -- 08:23 AM AKDT     Moonset
Sat -- 11:28 AM AKDT     6.63 feet High Tide
Sat -- 04:35 PM AKDT     Moonrise
Sat -- 05:46 PM AKDT     1.93 feet Low Tide
Sat -- 10:01 PM AKDT     Sunset
Sat -- 11:17 PM AKDT     5.34 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.33.2210.30.10.61.83.34.85.96.66.55.953.92.82.122.43.24.24.95.3

Weather Map
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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 Nome, 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 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.