Glennallen, AK Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Glennallen, AK

April 21, 2024 3:01 AM AKDT (11:01 UTC) Change Location
Sunrise 5:46 AM   Sunset 9:50 PM
Moonrise 5:59 PM   Moonset 4:53 AM 
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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.

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Marine Forecasts
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PKZ720 Port Of Valdez- 232 Pm Akdt Sat Apr 20 2024

Tonight - Variable wind less than 10 kt. Seas 2 ft.

Sun - Variable wind less than 10 kt. Seas 2 ft.

Sun night - Variable wind less than 10 kt. Seas 2 ft. Rain showers.

Mon - Variable wind less than 10 kt. Seas 2 ft.

Mon night - Variable wind less than 10 kt. Seas 2 ft.

Tue through Thu - Variable wind less than 10 kt. Seas 2 ft.

PKZ700
No data


7 Day Forecast for Marine Location Near Glennallen, AK
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Area Discussion for - Anchorage, AK
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FXAK68 PAFC 210129 AFDAFC

Southcentral and Southwest Alaska Forecast Discussion National Weather Service Anchorage AK 529 PM AKDT Sat Apr 20 2024

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3)...

The steady stream of tropical moisture that has impacted portions of the Gulf of Alaska and Kodiak Island will finally get pinched off as the elongated trough begins to break down. While the heavier rainfall across Kodiak has ended, light rain will linger a day or two longer before finally coming to an end by early Monday. As such, the Flood Watch was allowed to expire earlier this afternoon and any additional rainfall should remain light enough that flooding is no longer a concern.

The northwest to southeast oriented trough that has been parked across the southwest Gulf to near the Pac NW will start to break down today as a low on the southeast end of the trough lifts north towards SE Alaska. The parent upper low south of Kodiak will also start to lift north, helping to nudge the eroding frontal boundary north towards the northern Gulf coast. Surface features look rather messy the next few days with the main surface low weakening, but new low forming near Kodiak tomorrow morning. This will allow rain showers to linger through the day tomorrow until the low moves into the AKPen. Will also see increasing showers along the eastern Kenai and Prince William Sound as the surface front and a shortwave trough lift north. Winds will remain gusty today but will begin to steadily decrease as the gradient relaxes over the Gulf.

A shortwave trough rounding the western periphery of the elongated trough will dig into the southern Gulf by early next week with new surface low quickly deepening over the Gulf. Behind the shortwave, a ridging will build over the Aleutian Chain and eastern Bering...helping to finally lift the main trough northward into mainland Alaska. Depending on how this evolves, may see some showers work up the Cook Inlet and into the Anchorage Bowl and Mat-Su Valley by Monday afternoon and evening.

- PP

.SHORT TERM FORECAST SOUTHWEST ALASKA, THE BERING SEA/ALEUTIANS (Days 1 through 3)...

A shortwave trough associated with the North Pacific low south of the eastern Aleutians continues to move west near the Pribilof Islands this afternoon. Precipitation mostly in the form of snow will continue through this evening before the trough weakens later tonight. The north Pacific low will continue to meander near the Alaska Peninsula through Monday afternoon, allowing a chance of precipitation for Southwest during that time.

Starting this evening, a building shortwave ridge near the central Aleutians begins to move eastward towards mainland Alaska.
The ridge is expected to move over Southwest by Monday afternoon, moving the North Pacific low northeastward towards Southcentral.
The ridge will allow for calmer conditions to persist over Southwest through Tuesday, with the exception of some upslope precipitation along the local mountainsides.

As previously discussed, the next area of concern will be the formation of a low over the western Bering Sunday night. A shortwave trough from the North Pacific and an upper-level low from eastern Russia will start interacting early Sunday before merging later that day. An occluded front associated with the low will start moving eastward Sunday evening towards the western Alaska coastline, providing widespread gale-force winds and heavier precipitation for much of the central and eastern Bering.
Warmer air from the south should make most of the precipitation rain along the Aleutians, while the Pribilof Islands will likely get a rain/snow mix. Models are currently indicating an additional front forming Monday night into Tuesday morning, providing another round of precipitation and gale-force winds for the western Bering.

The challenge at the end of the forecast period will be the placement of the initial occluded front as it advances near the western Alaska coast. Models are currently in disagreement over the location of the ridge over mainland Alaska and how it will interact with the Bering low and front. The Canadian and ECMWF models bring the front over the coast as early as midday Tuesday, while the NAM and GFS delay the frontal passage until Tuesday night.

-BS

.LONG TERM FORECAST (Days 4 through 7: Wednesday through Saturday)...

A strong low in western Bering Sea will dominate the region while a strong ridge remains stubbornly in place over the interior Alaska and Canada through much of the forecast the week ahead. The strength and placement of the ridge will influence the direction and placement that the embedded shortwave troughs will flow into the Gulf. Expect unsettled weather to continue through next week.
A front will lift through the northern Gulf midweek, bringing light precipitation to higher elevations across southcentral due to weak upslope flow and for Kodiak Island and Kenai Peninsula.

Subtropical moisture will be drawn into the Bering Sea low that will occlude and spread heavy precipitation and gusty winds across the Aleutians and the Pribilofs through midweek. While the low circulation will remain over the Bering, the triple point of the occlusion appears to be roughly around the Alaska Peninsula with the front extending north along the SW Alaska coast. This front is expected to lift towards Southcentral, but there is uncertainty in how much it weakens before reaching Southcentral. Southeasterly flow though could keep breezy conditions through Kamishak gap Thursday.

Toward the later part of the week, the upper level low will begin to tilt and nudge into the Gulf. Models begin to diverge in the details for precipitation into the Gulf. A North Pacific low could potentially bring the next round of relatively substantial precipitation to the Gulf and Southcentral next weekend. There is low confidence though due to strength of the ridge over the eastern Pacific and the interior.

rux




Weather Reporting Stations
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Wind History for Valdez, AK
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
PAGK GULKANA,AK 18 sm68 mincalm10 smClear27°F19°F74%29.81
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Wind History from AGK
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Tide / Current for Valdez, Alaska
   
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Valdez
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Sun -- 12:41 AM AKDT     11.28 feet High Tide
Sun -- 05:56 AM AKDT     Moonset
Sun -- 06:04 AM AKDT     Sunrise
Sun -- 06:55 AM AKDT     1.17 feet Low Tide
Sun -- 12:59 PM AKDT     10.48 feet High Tide
Sun -- 06:57 PM AKDT     1.45 feet Low Tide
Sun -- 06:59 PM AKDT     Moonrise
Sun -- 09:25 PM AKDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Valdez, Alaska, Tide feet
12
am
11
1
am
11.2
2
am
10.3
3
am
8.5
4
am
6
5
am
3.6
6
am
1.8
7
am
1.2
8
am
2
9
am
3.8
10
am
6.2
11
am
8.4
12
pm
9.9
1
pm
10.5
2
pm
9.9
3
pm
8.4
4
pm
6.2
5
pm
3.9
6
pm
2.1
7
pm
1.5
8
pm
2.2
9
pm
4.2
10
pm
6.8
11
pm
9.3



Tide / Current for Rocky Point, Valdez Arm, Alaska
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Rocky Point
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Sun -- 12:39 AM AKDT     11.28 feet High Tide
Sun -- 05:58 AM AKDT     Moonset
Sun -- 06:06 AM AKDT     Sunrise
Sun -- 06:50 AM AKDT     1.17 feet Low Tide
Sun -- 12:57 PM AKDT     10.48 feet High Tide
Sun -- 06:52 PM AKDT     1.45 feet Low Tide
Sun -- 07:00 PM AKDT     Moonrise
Sun -- 09:26 PM AKDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Rocky Point, Valdez Arm, Alaska, Tide feet
12
am
11
1
am
11.2
2
am
10.3
3
am
8.3
4
am
5.9
5
am
3.4
6
am
1.7
7
am
1.2
8
am
2.1
9
am
4
10
am
6.4
11
am
8.5
12
pm
10
1
pm
10.5
2
pm
9.9
3
pm
8.3
4
pm
6.1
5
pm
3.7
6
pm
2
7
pm
1.5
8
pm
2.4
9
pm
4.4
10
pm
7
11
pm
9.4




Weather Map
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