Marine Weather and Tides
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 7:28AM||Sunset 8:41PM||Sunday March 29, 2020 8:35 PM PDT (03:35 UTC)||Moonrise 7:47AM||Moonset 12:16AM||Illumination 35%|
7 Day Forecast for Marine Location Near Yakutat CDP, AKHourly EDIT Help
Area Discussion for -  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXAK67 PAJK 292245 AFDAJK
Southeast Alaska Forecast Discussion National Weather Service Juneau AK 245 PM AKDT Sun Mar 29 2020
SHORT TERM. /Through Tue night/ The panhandle is showing two different faces today depending on where you are. First the southern panhandle is dealing with periods of rain and snow as far north as Kake and Angoon (accumulations have been only a few inches at most), and some breezy SE winds in some areas (Ketchikan gusting as high as 27 kt). This is due to a low west of the southern coast that is spreading a frontal band across the southern panhandle. The low and front are expected to gradually move to the SE over the next 24 hours taking the precip with it (any additional snow accumulations expected to be around an inch at most). Definite precip expected south of Sumner Strait through tonight with chance pops lingering into Monday before it moves completely out by Mon evening.
The other face is the strong cold northerly outflow occurring across the northern panhandle. Gale force winds are blowing through a majority of the northern inner channels this afternoon and are just expected to strengthen later tonight as the Yukon high strengthens and the SE gulf low continues its slow SE retreat. Pressure gradients across the northern coast mountain range forecast to reach into the 10 to 20 mb range late tonight so gales are expected to continue with even storm force winds likely for Lynn Canal late tonight. For land areas, gusty winds are also expected around Skagway, near Lynn Canal, and near other outflow areas across the north. The winds combined with the cold air will bring wind chills down to -30 at White Pass tonight (a wind chill advisory has been issued for this tonight). A significant Taku wind event is also expected for the Downtown Juneau and Douglas area tonight into tomorrow as strong cross barrier flow combined with an inversion and critical level will cause wind gusts in excess of 70 mph. A high wind warning has replaced the watch that was out until 4 pm Monday.
All of these winds are expected to remain strong through Monday. At that point two things will start to allow the winds to diminish. The first is the continued SE retreat of the low in the gulf through the next 48 hours. The second is the Yukon high will gradually shift into northern BC by Tue afternoon and spread its influence into the Panhandle and northern gulf. This will lower pressure gradients across the region allowing winds to gradually diminish into Tuesday night (though E-W channels may see some increase in winds by Tue due to the this. Though not to the extreme that the northerly winds are blowing right now).
Guidance generally in good agreement. Most forecast changes dealt with local wind effects and the slow retreat of the precip across the southern half of the panhandle today. Nam and Namnest were the favored guidance.
LONG TERM. /Tuesday through Sunday as of 9 pm/ . The long range portion of the forecast for Southeast Alaska will be dominated by a pair of blocking features. The first is an omega block that is positioned over the west coast of Alaska. The eastern low of the omega block is over the southern Gulf of Alaska. The associated flow The upper level high portion of the omega moves over to the Canadian Arctic waters north of the McKenzie delta. This repositioning of the high heights in omega into a split flow pattern mid to upper level flow over Southwest Alaska still leaves the southeast panhandle out of any direct flow pattern to the end of the week.
As a result there is no significant weather system for the panhandle for the end of the week and headed into the weekend. Overall it looks to be dry forecast from midweek onward.
Computer models struggle with blocking ridges, mainly with respect to timing of the blocking ridge break down or shift in location and how upstream waves will react. This pattern seems to be no different due to the fact model spread is rather large as early as Tuesday evening. Continued to use a blend of GFS/ECMWF for Tuesday with a transition to WPC for rest of the week. Forecast confidence is moderate to high, although with low, expect changes.
AJK Watches/Warnings/Advisories. PUBLIC . High Wind Warning until 4 PM AKDT Monday for Akz024. Strong Wind through Monday afternoon for Akz017-019. Strong Wind through Monday afternoon for Akz024. Wind Chill Advisory from 8 PM this evening to 10 AM AKDT Monday for Akz017. MARINE . Heavy Freezing Spray Warning for PKZ011-012. Storm Warning for PKZ012-013. Gale Warning for PKZ021-022-031>034-041>043-051. Small Craft Advisory for PKZ011-035-036-052-053.
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Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|YATA2 - 9453220- Yakutat, AK||7 mi||54 min||41°F||1003.7 hPa|
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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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