Saturday, May30, 2020
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Marine Weather and Tides
King Cove, 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 4:33AMSunset 11:20PM Saturday May 30, 2020 4:39 PM AKDT (00:39 UTC) Moonrise 12:57PMMoonset 2:26AM Illumination 64% Phase: Waxing Gibbous; Moon at 9 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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PKZ155 South Of The Ak Peninsula Castle Cape To Cape Sarichef- 309 Pm Akdt Sat May 30 2020
.gale warning Sunday...
Tonight..E wind increasing to 30 kt. Seas 10 ft.
Sun..SE wind 35 kt. Seas 12 ft. Rain.
Sun night..SE wind 25 kt. From the shumagin islands e, se wind 25 kt diminishing to 15 kt after midnight. Seas 14 ft.
Mon..SE wind 25 kt. Seas 14 ft.
Mon night..SE wind 20 kt. Seas 13 ft.
Tue..N wind 20 kt. Seas 12 ft.
Wed through Thu..W wind 15 kt. Seas 7 ft.


7 Day Forecast for Marine Location Near King Cove, AK
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location: 55.12, -161.8     debug


Area Discussion for -
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FXAK68 PAFC 302343 AFDAFC

Southcentral and Southwest Alaska Forecast Discussion National Weather Service Anchorage AK 343 PM AKDT Sat May 30 2020

ANALYSIS AND UPPER LEVELS. Two distinct troughs are present over the area this afternoon with the North American ridge still extending from the Yukon to the North Slope. The vertically stacked low embedded within the western of the two troughs continues to occlude as it slowly moves north over the eastern Gulf. A series of easterly shortwaves continue to move over southern Alaska this afternoon, aiding diurnal heating to produce convection and showers. Radar indicates widespread shower activity over Prince William Sound and thunderstorm activity over the Wrangell, Talkeetna, and Kilbuck Mountains.

Over the west the remnants of an occluded front continue to slowly dissipate from Cold Bay to Saint Matthew. Satellite indicates the formation of the next system to the south of Adak. This system is supported by the left exit region of a zonal jet streak and highly baroclinic lower levels. With these two supporting features, this system will continue to intensify as it pushes to the east-northeast.

MODEL DISCUSSION. Synoptic features have come to close agreement for the first 36 hours before they begin to diverge. In the short term models continue to slightly differ in the strength and location of small easterly waves moving over southern Alaska. These features should be addressed with each model run as they will continue to impact areas of possible convection in the short term. After the 36 hour period model solutions begin diverge. The GFS solution has the upper low decoupling from the jet causing the low to stall over the central Aleutians, while the ECMWF continues to push the system to the east with maintained upper level support. To the east, solutions differ in the strength of easterly waves as the low currently over the southeastern Gulf pushes onshore near Yakutat.

AVIATION.

PANC . VFR conditions and light winds will continue through the afternoon and evening hours. Ceilings will lower with light rain developing late this afternoon. Gusty southeasterly winds are expected late this afternoon, diminishing later this evening. Ceilings may drop to MVFR later this evening into the overnight hours, but at this time VFR is more likely.

SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3). A weakening upper low in the Gulf is leading to the propagation of shortwave troughs moving east to west across the region. As such, periods of rain are expected over much of Southcentral the next few days. Isolated thunderstorms are possible along the Alaska Range, reaching the northern Susitna Valley by this evening. While model timing/amounts are still not in the best agreement, it appears that conditions will be drier in the Anchorage area due to downsloping given the east-southeast flow near the surface and northeasterly flow aloft. The best chances for rain/showers will be this afternoon through around midnight Sunday morning. The "heaviest" rain is expected across Prince William Sound as well as areas near higher terrain. This same general pattern will persist into early next week, again with coastal areas and areas near the mountains seeing the greatest chances of rainfall. While chances will also persist for interior regions, they look to stay more dry at this time.

SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2). As the thermal trough continues to lift north this afternoon, unstable conditions are present across the Kuskokwim Delta and Valley. This has led to thunderstorm activity producing lightning near Aniak, which will continue through the evening hours as it moves slightly westward. Convective activity is also present near King Salmon, but less impressive than the northern parts of Southwest Alaska.

Sunday will see another chance for thunderstorm development along the northern portions of the Kuskokwim Delta and Valley as slightly weaker instability remains in the forecast area. Chances for precipitation will continue across the remainder of Southwest Alaska throughout the day as shortwaves continue to cross into the region, through the timing and exact location remains a forecast challenge in this pattern. Expect more stable conditions to move in on Monday as the showers begin to taper off.

SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2). As one front over the eastern Bering and Aleutians diminishes this afternoon, the next strong low pressure system just south of Adak becomes the dominant weather feature heading into the evening hours. This new system will continue to bring widespread rainfall to the Aleutians and southern Bering as it propagates eastward through Monday. Winds will increase to gale force Sunday morning over the eastern Aleutians and Alaska Peninsula, which will then weaken to small crafts by Sunday through Monday as the associated front begins to push into the Gulf.

MARINE (Days 3 through 5). Gulf Of Alaska: A weak surface low situated in the northern Gulf on Tuesday will dissipate by Wednesday as it lifts north and west. Easterly small craft advisory winds associated with this system will also diminish by Wednesday. Areas of rain will continue across the northern half of the Gulf through Wednesday, reinforced by a secondary surface trough moving through the Gulf. Weak ridging then develops over the Gulf for Thursday in the wake of the trough.

Bering: A surface low south of the AKPEN Tuesday will bring northerly winds to much of the Bering into Wednesday. As this system tracks east, ridging will build in behind it, helping to further diminish wind speeds and cloud cover over the central and eastern Bering. A second system moving from west of Attu to the northern Bering on Thursday will bring increasing clouds, precipitation, and southerly winds to the western Bering.

LONG TERM FORECAST (Days 3 through 7). On Wednesday, the long wave pattern continues to show an extensive trough across much of the state. Embedded within the long-wave trough are two well defined upper level lows. The first is a vertically stacked low south of the AKPEN that will slowly work its way southeast and out of the Gulf by Friday. The second upper level low will transit from the Russian coast to Norton Sound by the end of the week. Between the two, a ridge will extend from Southwest Alaska to the Arctic ocean. As the first low moves east, the southerly flow aloft will return to a more northeasterly flow, allowing weak shortwaves to periodically move across Southcentral. This will reestablish the pattern of scattered afternoon and evening shower activity. The second upper level low will help spin up a frontal system that will cross the northern Bering through Friday before weakening as it runs into the ridge. A flat ridge will also remain in place across the Aleutian Chain, limiting clouds and precipitation and keeping temperatures on the milder side. Temperatures across the southern Mainland will also trend warmer through the extended forecast, but remain cooler than what we have seen the past couple of days.

AFC WATCHES/WARNINGS/ADVISORIES. PUBLIC . NONE. MARINE . Gale Warning 155 165 170. FIRE WEATHER . NONE.



SYNOPSIS AND MODEL DISCUSSION . TM SOUTHCENTRAL ALASKA . AP SOUTHWEST ALASKA/BERING SEA/ALEUTIANS . AH MARINE/LONG TERM . CJ/TM


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KGCA2 - 9459881 - King Cove, AK 28 mi52 min SSW 12 G 23 46°F 46°F1002.6 hPa
SNDA2 - 9459450 - Sand Point, AK 70 mi52 min E 12 G 17
46075 - Shumagin Islands, AK 94 mi50 min 18 47°F 47°F9 ft1002.8 hPa (-1.1)

Wind History for King Cove, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for PAVC

Wind History from AVC (wind in knots)
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Tide / Current Tables for Dolgoi Harbor, Dolgoi Island, Alaska
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Dolgoi Harbor
Click for Map
Sat -- 02:55 AM AKDT     3.52 feet Low Tide
Sat -- 04:26 AM AKDT     Moonset
Sat -- 06:16 AM AKDT     Sunrise
Sat -- 08:51 AM AKDT     5.30 feet High Tide
Sat -- 02:57 PM AKDT     Moonrise
Sat -- 03:32 PM AKDT     0.29 feet Low Tide
Sat -- 10:26 PM AKDT     5.33 feet High Tide
Sat -- 11:14 PM AKDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.33.93.63.53.744.44.95.25.354.23.2210.40.30.81.72.83.94.85.35.3

Tide / Current Tables for Ukolnoi Island, Alaska
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Ukolnoi Island
Click for Map
Sat -- 02:55 AM AKDT     3.52 feet Low Tide
Sat -- 04:25 AM AKDT     Moonset
Sat -- 06:14 AM AKDT     Sunrise
Sat -- 08:48 AM AKDT     5.58 feet High Tide
Sat -- 02:55 PM AKDT     Moonrise
Sat -- 03:32 PM AKDT     0.29 feet Low Tide
Sat -- 10:23 PM AKDT     5.61 feet High Tide
Sat -- 11:14 PM AKDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.543.63.53.74.14.65.15.55.65.24.43.32.110.40.40.91.834.25.15.65.5

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.
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Ground Weather Radar Station King Salmon
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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.