Monday, January25, 2021
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Marine Weather and Tides
Gustavus, 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 8:12AMSunset 4:07PM Monday January 25, 2021 12:22 PM AKST (21:22 UTC) Moonrise 12:37PMMoonset 6:43AM Illumination 94% 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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PKZ021 Icy Strait- 408 Am Akst Mon Jan 25 2021
Today..E wind 15 kt. Seas building to 3 ft.
Tonight..E wind 20 kt. Seas 4 ft.
Tue..E wind 25 kt. Seas 5 ft.
Tue night..E wind 25 kt. Seas 5 ft. Freezing spray.
Wed..E wind 25 kt becoming ne 15 kt. Seas 4 ft.
Thu..E wind 20 kt. Seas 4 ft.
Fri..E wind 20 kt. Seas 4 ft.


7 Day Forecast for Marine Location Near Gustavus, AK
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location: 58.45, -135.88     debug


Area Discussion for -
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FXAK67 PAJK 251511 AFDAJK

Southeast Alaska Forecast Discussion National Weather Service Juneau AK 611 AM AKST Mon Jan 25 2021

SHORT TERM. /Monday and Tuesday/ The work week starts off on a quiet note as high pressure builds into the region from the west. The main forecast challenges in the short term will be low clouds and patchy fog this morning and Tuesday morning. Widespread fog, dense at times, earlier this morning has since dissipated across most areas with low stratus still hanging around in a few spots across the southern two thirds of the Panhandle. A very weak shortwave passing through this afternoon will increase clouds across the northern Panhandle and along the Outer Coast. There isn't a lot of moisture and lift associated with this system; therefore only scattered snow showers are expected along the Outer Coast with flurries through the Icy Strait corridor.

Fog may redevelop late this evening as skies begin to clear. The best timing for fog development will be during the early evening hours where clouds start to break up and winds remain light. Northerly outflow winds are expected to pick up through the overnight hours clearing out any leftover low clouds and fog.

Speaking of outflow, winds increase dramatically into Tuesday as the pressure gradient tightens between a high in Canada and a low in the SW gulf. Expect a strong northerly gale to develop in Lynn Canal while small crafts develop in the Central and Southern Inner Channels. Higher gusts likely out of interior passes and in typical outflow areas. Strong winds with gusts to 50 mph possible in Skagway and along the Klondike Highway during this timeframe. Mountain Wave guidance for downtown Juneau keeps conditions poor for Taku winds through mid week with weak cross barrier flow, around 40 kt, and a lack of a critical layer. Gusts to 40 mph are still possible around downtown Juneau due to gap flow winds from the tight pressure gradient; however do not expect a mountain wave to develop at this time.

Overall forecast confidence is at or above average for the short term. Lowest confidence remains in the fog and low cloud development later this evening.

LONG TERM. /Wednesday through Sunday/ As of 10pm Sunday. The "cold air outbreak" will be reaching it's peak mid-week at the beginning of the extended forecast period. High temperatures in the teens to upper 20s will be widespread across the panhandle while low temperatures will generally be in the teens to single digits. A bigger temperature difference of 10+ degrees is likely between interior valley locations and windy spots (ie. the Mendenhall Valley and Downtown Juneau). Strong high pressure over the Yukon and an inverted trough over the inside waters will cause predominately N-NE outflow winds through the inside waters, reaching gale force for Northern Lynn Canal. As a result, freezing spray remains in forecast and was even expanded to more marine waters. Overall, this is a dry pattern for SE Alaska, so have kept the POP forecast low.

The Yukon high pressure will shift down into northern B.C. Wednesday night through Thursday. This will shift the best outflow to be more out of the eastern interior passes, including potential for Taku winds. Meanwhile, a low pressure system will move into the northern gulf from the west Thursday night, increasing said E-W pressure gradient. A front extending outward from the low creates the potential for snow along the outer coast as the low tracks slowly SE Friday into Saturday. Latest models, and their previous runs, have had more differences with the position and subsequent track of this low, so have only made minor changes to this portion of the forecast. But more often than not, the high pressure and dry air already in place wins out, limiting how far inland the snow can reach - and may end up just causing increased clouds. Once the low shifts SE, the cold/dry/northerly pattern continues.

AJK WATCHES/WARNINGS/ADVISORIES. PUBLIC . None. MARINE . Gale Warning for PKZ012-013. Small Craft Advisory for PKZ022-041>043-051>053.



CM/Ferrin

Visit us at http://www.weather.gov/Juneau


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BLTA2 - Bartlet Cove AK 1 mi56 min E 1.9 G 4.1 30°F
GUXA2 9 mi29 min NNE 1.9 G 2.9 32°F 1008.1 hPa30°F
ELFA2 - 9452634 - Elfin Cove, AK 30 mi52 min 33°F 44°F1010.1 hPa
GEXA2 31 mi27 min ENE 13 G 18 33°F 1007 hPa29°F
SISA2 - Sisters Island, AK 38 mi60 min E 18 G 22 33°F
CSPA2 - Cape Spencer, AK 44 mi72 min ENE 16 G 19 33°F 1009 hPa29°F
LIXA2 45 mi29 min N 8.9 G 11 31°F 1008.5 hPa25°F
RIXA2 48 mi38 min N 13 G 17 32°F 1007.6 hPa27°F
PRTA2 - Point Retreat, AK 49 mi72 min NNW 4.1 G 8 31°F 1011.3 hPa25°F

Wind History for Juneau, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gustavus, Gustavus Airport, AK8 mi26 minN 310.00 miOvercast31°F31°F100%1010.7 hPa

Link to 5 minute data for PAGS

Wind History from AGS (wind in knots)
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Last 24hrW7NW4NW3NW3
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NW4CalmCalmCalmCalmN3CalmCalmCalmCalmCalmN3CalmCalmCalmCalmN3
1 day agoNW3CalmCalmCalmCalmN3SE5SE5--SE8--SE4CalmSE3NE3CalmCalmCalmNW4NW3NW3CalmNW3NW5
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Tide / Current Tables for Bartlett Cove, Glacier Bay, Alaska
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Bartlett Cove
Click for Map
Mon -- 04:45 AM AKST     5.77 feet Low Tide
Mon -- 06:43 AM AKST     Moonset
Mon -- 08:22 AM AKST     Sunrise
Mon -- 10:49 AM AKST     13.64 feet High Tide
Mon -- 12:37 PM AKST     Moonrise
Mon -- 04:10 PM AKST     Sunset
Mon -- 05:34 PM AKST     0.22 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.69.88.57.165.86.68.210.21213.313.612.810.984.82.10.50.41.74.16.89.211

Tide / Current Tables for Lemesurier Island Light, North Passage, Icy Strait, Alaska
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Lemesurier Island Light
Click for Map
Mon -- 04:13 AM AKST     5.05 feet Low Tide
Mon -- 06:42 AM AKST     Moonset
Mon -- 08:22 AM AKST     Sunrise
Mon -- 10:10 AM AKST     12.49 feet High Tide
Mon -- 12:39 PM AKST     Moonrise
Mon -- 04:11 PM AKST     Sunset
Mon -- 05:25 PM AKST     0.32 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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9.88.77.25.85.15.36.48.210.111.712.512.110.88.663.51.50.40.51.83.96.38.510

Weather Map
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wmap_P
GEOS Local Image of PacificNorthwest    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

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Ground Weather Radar Station




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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.