848
FXAK67 PAJK 121956
AFDAJK

Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
1156 AM AKDT Thu Jun 12 2025

.UPDATE...Aviation section.

&&

SHORT TERM...Low circulation in the southeastern gulf with mid to
upper level flow moving moisture north through British Columbia,
the southern Yukon Territory and than across the northeast gulf
Coast. Rain around Yakutat his morning will likely start and stop
through the morning before the more organized moisture plume
arrives afternoon and evening. This plume will clip the northern
portion of the panhandle as far south as Juneau area Thursday
afternoon and into early Friday morning. The southwestern portion
of the panhandle is anticipated to stay dry for another day.

LONG TERM...Through the weekend a 500mb trough will stagnate and
retrograde slightly before being reinforced by an additional
trough. At the surface, this will allow a weak low to meander
along our coast. Consequences of this pattern include continued
onshore flow, some embedded moisture, and southerly fresh to
strong breezes along the coast Friday morning. One item of note is
smoke from Canadian wildfires, expecting some transport into the
region with the potential to smell some smoke in the north. This
will ultimately depend on fire growth in British Columbia. Not
expecting significant impact/haze for aviation operations at this
time. Certainly a welcome break from our active summer.

Into early next week, the lingering upper low over the SE gulf
will have some energy inserted into it front the south that will
restrengthen the surface low and send a new front into the
southern panhandle Monday. This front is not looking particularly
strong however with mostly light rain expected and winds may not
exceed 25 kt for any given area. At the same time the core of the
upper low is expected to become warmer with a shot of warmer air
moving north through the panhandle on the eastern side of it.
Expect high temperatures to rise into the 60s for many areas
Sunday through Tuesday. The question mark is high temps in the
northern inner channels at that time where easterly flow will
produce a downsloping effect, some drier conditions and maybe
peaks of sun which could lead to higher temps in isolated areas
than what is depicted for this region right now. Into Wednesday,
damp conditions return for most areas as the possibility of more
easterly waves from Canada brings chances of rain back into the
forecast for the north especially.

AVIATION.../Until 18Z Friday/...VFR conditions will give way to
possible MVFR conditions for some locations over the northern
panhandle toward Thursday evening for the Icy Strait corridor,
northward. This is due to cloud cover & rainfall that is seen on
in satellite imagery over British Columbia which will rotate over
the area through the next 18 hours. Elsewhere, over the
Panhandle, primarily VFR conditions will be in store for the
entire TAF period.

MARINE...
Outside: No significant band of winds along the outer waters
Thursday and seas fairly settled with less than 4 ft expected. An
impulse around a the low in the gulf will begin to ramp winds
close to small craft range of 15 to 25 kt on Friday west of Prince
of Wales Island.

Inside: 5 to 15 kt winds across most of the inner channels with
the southern inner channels switching from Northwest to southeast.
West flow from Cross Sound and Icy Strait has a breezy spot early
This morning of 15 kts near Sisters Island. Lynn Canal is
assisting in dispersing the influx of winds with southerly wind to
blow into Northwest Canada.

&&

.AJK WATCHES/WARNINGS/ADVISORIES...
PUBLIC...None.
MARINE...None.

&&

$$

SHORT TERM...Bezenek
LONG TERM....AP
AVIATION...ABJ
MARINE...Bezenek

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