Friday, December4, 2020
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Marine Weather and Tides
King Cove, AK

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 9:49AMSunset 3:50PM Friday December 4, 2020 2:51 PM AKST (23:51 UTC) Moonrise 8:22PMMoonset 12:50PM Illumination 76% Phase: Waning Gibbous; Moon at 20 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- 347 Am Akst Fri Dec 4 2020
.storm warning Saturday...
Today..E wind 40 kt except E 25 kt from the shumagin islands e. Seas 19 ft except 12 ft from the shumagin islands e. Snow and rain.
Tonight..E wind 40 kt. Seas 17 ft.
Sat..NE wind 55 kt. Seas 21 ft building to 27 ft in the afternoon. Widespread rain showers.
Sat night..NE wind 55 kt. Seas 30 ft.
Sun..N wind 45 kt. Seas 27 ft.
Mon..NW wind 30 kt. Seas 13 ft.
Tue..NW wind 20 kt. Seas 9 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 041401 AFDAFC

Southcentral and Southwest Alaska Forecast Discussion National Weather Service Anchorage AK 501 AM AKST Fri Dec 4 2020

ANALYSIS AND UPPER LEVELS.

A longwave trough extends from southwest Alaska over to the AlCan border. A ridge to the south of this feature remains over the eastern Bering. A weakening area of low pressure has moved inland over the Kuskokwim Delta, bringing light snow to the northern Delta. Three surface lows in the North Pacific are increasing winds and bringing rain for the Aleutians as their associated fronts approach the area. Besides some precipitation over the central Gulf, Southcentral looks to remain largely dry. One area to note is the presence of low stratus visible on webcams from Palmer to Eagle River towards the Hillside, which could remain throughout the day. Northerly flow aloft will usher in cold air so expect chilly temperatures to continue throughout the day.

MODEL DISCUSSION.

Models are in fair agreement as to the synoptic pattern for the short term.

AVIATION.

PANC . There is a possibility of MVFR conditions due to low stratus through this morning becoming VFR in the evening. Light winds will persist.

SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2).

Low level clouds have developed along the Chugach Mountains in northern Cook Inlet this morning. The northerly flow off the Inlet in the area will likely keep them around for much of the day.

An upper level trough over the Copper River Basin this morning is keeping some light snowfall over the Richardson Highway corridor. This snow will not accumulate much and should end later today, but clouds will be slow to dissipate in the lower elevations of the Basin as an inversion will help trap the moisture under it. There is a better chance for clearing on Saturday for the Copper River Basin.

By Saturday night, the next system will move into the Gulf of Alaska and Kodiak Island. This will do what most fronts do over Kodiak this time of year: snow will fall at the beginning of the event and then it will switch over to rain for the majority of the precipitation.

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 through 3: Friday through Sunday) .

A cold core high is expected to persist over the northern Bering through the forecast period. This will bring clear, cold and dry weather to Southwest through Sunday. Winds are expected to increase out of the northeast on Saturday as a strong North Pacific low approaches the AKPEN and strengthens the pressure gradient. This may help to increase temperatures a bit by Sunday as winds mix down the low level inversion. However, wind chill may drop the apparent temperature as low as -25F over interior areas. The AKPEN itself will be impacted by the low Saturday afternoon with the precipitation mainly over the high terrain and coastal areas southwest of Port Heiden. To the northeast, precipitation is expected to be mostly downsloped, which will warm areas to the northwest of the Aleutian Range.

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 through 3: Friday through Sunday) .

Two low pressure systems to the south of the Aleutian Chain are expected to absorb into one by Friday afternoon. Meanwhile, a very strong North Pacific low will be moving to the east at approximately 45N. Over the northern Bering mostly calm conditions are expected underneath a region of high pressure. Weather will begin to become active once again on Saturday as the strong North Pacific low begins to turn north. Storm force winds and high seas are expected over and to the east of the central Aleutians. By Sunday model guidance begins to differ with the track of the low; however, gale force easterly winds are expected over the eastern Bering with northerly gap winds across the central and eastern Aleutians and the AKPEN.

MARINE (Days 3 through 5).

Gulf of Alaska: Off-shore winds through gaps and passes will be present in the western Gulf on Friday and cold air filters into the Gulf. Outside of these gap winds, the Gulf stays quiet. There is a weak low moving north into our forecast area Saturday, but there is low confidence in this as long range models have been very inconsistent. We are more confident in northeast flow that develops over the Gulf on Saturday, which will enhance winds in the lower Cook Inlet and Shelikof Strait to small craft advisory. However, there are still no major weather systems forecasted and no winds above small craft advisory.

Bering: A low pressure system that has been becoming more pronounced in models the past couple of days will be present just south of the central Aleutians Friday. It is expected to produce weak gale force winds in the central Bering Friday. We have at least moderate confidence in this since its been in the models for a couple days now. This low should weaken and stay south of the Aleutians over the weekend. Winds then shift to the northeast for the Bering and could become weak gale force winds in the eastern Bering, but this part of the forecast is still being honed in on. Otherwise the Bering remains quiet.

LONG TERM FORECAST (Days 3 through 7).

A gigantic North Pacific low will basically influence much, if not all, of the long term forecast. A couple shortwaves from this system will spread to the eastern Aleutians and AKPEN as early as Sunday morning, while the other couple of shortwaves race northward toward the Kenai Peninsula and Prince William Sound (PWS) around Sunday afternoon. A broad area of warm air advection from the Gulf and North Pacific ocean will roll across Southcentral and Southwest Alaska in the coming days, and this could lead to a rainy pattern and/or mix with snow inland. Although much colder temperatures at 850 mb may push as far north as the Kuskokwim Mountains and well west of the Kuskokwim Delta earlier in the week, the potential for snowy conditions are feasible as we take winds and freezing level into account in the coming days. However, snow may be limited mainly around the Gulf.

Models struggled a bit with the placement of the synoptic low after Sunday night, but the rain/snow mix pattern looks quite favorable on this latest model package. An upper level ridge over the Bering will stall there for a couple days before moving eastward, and depending on the strength of the aforementioned low, the ridge will take its time trekking eastward through the middle of the week.

AFC WATCHES/WARNINGS/ADVISORIES. PUBLIC . NONE. MARINE . Heavy Freezing Spray Warning 139 140 160 180 181 Storm Warning 150 155 172 174 Gale Warning 132 165 170 171 173 175 176 179 180 412 413 414 FIRE WEATHER . NONE.



SYNOPSIS AND MODEL DISCUSSION . CRK SOUTHCENTRAL ALASKA . EZ SOUTHWEST ALASKA/BERING SEA/ALEUTIANS . KM MARINE/LONG TERM . CB


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KGCA2 - 9459881 - King Cove, AK 28 mi51 min NE 8.9 G 21 33°F 43°F1003.9 hPa (-1.0)
SNDA2 - 9459450 - Sand Point, AK 70 mi51 min NE 12 G 17 32°F 44°F1005.7 hPa (-1.0)

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
Fri -- 05:16 AM AKST     5.32 feet High Tide
Fri -- 09:54 AM AKST     Sunrise
Fri -- 10:18 AM AKST     4.29 feet Low Tide
Fri -- 01:50 PM AKST     Moonset
Fri -- 04:23 PM AKST     6.97 feet High Tide
Fri -- 05:20 PM AKST     Sunset
Fri -- 09:22 PM AKST     Moonrise
Fri -- 11:17 PM AKST     -0.23 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.21.32.63.94.95.35.35.14.84.54.34.44.85.466.66.96.86.14.83.21.70.4-0.2

Tide / Current Tables for Ukolnoi Island, Alaska
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Ukolnoi Island
Click for Map
Fri -- 05:13 AM AKST     5.60 feet High Tide
Fri -- 09:54 AM AKST     Sunrise
Fri -- 10:18 AM AKST     4.29 feet Low Tide
Fri -- 01:50 PM AKST     Moonset
Fri -- 04:20 PM AKST     7.33 feet High Tide
Fri -- 05:18 PM AKST     Sunset
Fri -- 09:20 PM AKST     Moonrise
Fri -- 11:17 PM AKST     -0.23 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.31.42.84.25.25.65.55.34.94.54.34.44.95.66.36.97.37.26.453.41.70.4-0.2

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 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.