Petersburg, Alaska 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

989
FXAK67 PAJK 080037
AFDAJK

Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
437 PM AKDT Sun Jun 7 2026

.SYNOPSIS...

Key Messages:

- Chances of showers linger in the southern panhandle as a front
  falls apart through Monday.

- Skies will begin to clear over the northern panhandle Monday,
  with the rest of the panhandle following suit Tuesday.

- Daytime high temperatures in the mid to high 60s will be
  possible across the panhandle Tuesday.

&&

.SHORT TERM...Minimal changes were made to the short term
forecast, with a marine layer blanketing the northern and parts
of the central panhandle and a weak front pushing up into the
southern panhandle from the south. Southern communities have been
seeing light rainfall and gusty winds up to 25 kts periodically
through the day, extending from the southern tip of the panhandle
up to around Frederick Sound. This front is still not expected to
extend much further than this, with the main system stalling in
the southern gulf and keeping most of the frontal band offshore.

East to southeasterly winds around 20 to 25 kts are pushing along
the coast and into Clarence Strait through the afternoon, and are
expected to weaken with the front overnight into Monday. The
front is expected to have mostly fallen apart by Monday afternoon,
though shower potential will still exist for the southern
panhandle into Monday night. Winds will be mostly light at this
point, though any pockets of heavier showers may bring a gust or
two back into the mix. The marine layer has lifted to around 5000
ft through Sunday, and skies are expected to start to clear out in
the northern panhandle through Monday. Clearing skies will
continue to take over through Tuesday, allowing the rest of the
panhandle to see blue skies and high temperatures to approach 70
degrees with daytime heating. Light sea breezes will also develop
through the afternoon on Monday for northern panhandle
communities, and for the rest of the panhandle Tuesday.

.LONG TERM.../Wednesday through Sunday/...The forecast for the
remainder of the week shows no drastic changes, with a pattern of
weak onshore flow continuing to drive light, spotty precipitation
across the region. This activity will be primarily amplified by
orographic forcing and minimal in accumulation for the lower
elevations. Also reaffirming the messaging in a consistent trend
toward warming and drying as the week progresses, with increasing
confidence that a ridge will take hold over the panhandle on
Friday. Until then, increased cloud cover late Wednesday into
Thursday will keep nighttime low temperatures warmer. By the end
of the weekend, the southern panhandle could see high temperatures
reaching the high 60s, and low to mid 60s northward.

Wednesday afternoon, the surface pressure gradient is expected to
tighten over the northern panhandle, causing winds to pick up in
Lynn Canal up to Taiya Inlet with gusts likely around 20kts. This
will be due to a combination of weaker low pressure and seasonally
warmer temperatures developing in western Canada, alongside a ridge
of high pressure building south of the panhandle. While this high
pressure will help promote partial clearing of the skies and a
reduction in precipitation toward the end of the week, it is not
expected to completely eliminate the chance of showers throughout
the long term forecast.

As for next weekend, guidance is beginning to show better agreement
on the placement and strength of a low-pressure system moving into
the western Gulf on Friday. Recent model runs indicate this
system will likely dissipate over the Aleutians, driven westward
by an upper-level jet. The impacts to Southeast Alaska appear to
be minimal, as a stubborn area of high pressure is expected to
drive stronger winds toward the northern Gulf coast instead.
Yakutat and surrounding areas could see more moderate rain showers
later in the weekend, though current thinking is that
accumulations will be seasonably normal.

&&

.AVIATION.../Until 00Z Tuesday/...The marine layer is breaking up
over the northern Panhandle. Primarily VFR conditions are expected
for the that area through the period. It is still possible that
MVFR CIGs may temporarily build back in into the evening hours.
PAGY may experience some breezy/gusty southerly SFC winds from
this afternoon into the evening hours due to a combination of sea
breeze activity & a tightening southerly pressure gradient over
that area. That may happen again tomorrow afternoon, but with
less magnitude. LLWS values remain rather benign for the northern
Panhandle through the period. SFC winds for the rest of the
northern Panhandle remain benign through the period.

A weak frontal band is also continuing to slowly push into the
southern Panhandle, bringing light rain to that area & periodically
lowering flight conditions into the MVFR category. Due to the
weakening nature of the front, rainfall should stay mostly south
of around Frederick Sound and become more hit-or-miss showers
overnight as the front becomes stationary & retreats back
southward while weakening into Monday. Breezy/gusty conditions are
also expected to continue for southern areas like PAKT & PAKW
with a diminishing trend during the latter half of the TAF period.
With the breezy/gusty winds at the surface and similar wind
speeds aloft in the far southern panhandle, LLWS concerns are not
expected. Flight conditions universally improve to the VFR
category across the region Monday.

&&

.MARINE...Marine layer stratus clouds continue to impact the eastern
Gulf & Inner Channels. Another weakening low & associated front is
moving into the southern Panhandle & will stall out, weaken, &
retreat southeastward along with the parent low & depart the region
Monday. This system has been working to bring winds & seas up for
the southeastern Gulf, Dixon Entrance, & Clarence Strait.

Outside Waters(Eastern Gulf of Alaska): Sustained winds will remain
increased up to around 25 kt with the highest values, particularly
over the southeastern Gulf area, & significant wave heights building
back to between 7 & 10 feet from the new low & associated front
approaching & pushing into Southeast Alaska, then stalling-out. It
will then dive southeastward while weakening, passing by & moving
away from the region Monday. Around the Dixon Entrance of Clarence
Strait, the sustained winds may peak out at around 30 kt Sunday
afternoon into Sunday night. The 3 ft southerly swell we have
been seeing today will diminish to 1 to 2 feet starting late
Sunday night / early Monday morning & lasting through the majority
of the work- week. Winds will progressively diminish to less than
15 kt & waves will subside to less than 3 ft for the entirety of
the eastern Gulf through the majority of the work-week as that low
continues to weaken, move southeastward away from the area, & the
pressure gradient further relaxes behind it.

Inside Waters(Southeast Alaskan Inner Channels): Winds over most of
the Inner Channels will generally stay around 15 kt or less through
the majority of the next work-week with Lynn Canal/Taiya Inlet
experiencing a bit breezier conditions due to a periodically tighter
pressure gradient & daytime sea breeze influence. Overall, for areas
that get breaks in the cloud cover, winds will generally follow a
diurnal sea breeze/land breeze cycle through the majority of the
work-week. Today, winds have increased up to around 25 kt for
Clarence Strait/the Dixon Entrance & seas have built up to around 7
ft, once again, as another low & its associated front are pushing
northeastward into Southeast Alaska. The front will then stall-out,
then pull away from the Panhandle while its parent low dives
southeastward, bypassing the area to the south while continuing to
weaken through Monday. Around the Dixon Entrance of Clarence Strait,
the sustained winds may peak out at around 30 kt Sunday afternoon
through Sunday night. Winds will progressively diminish to less than
15 kt & waves will subside to less than 3 ft for the entirety of the
Inner Channels through the majority of the work-week as that low
continues to weaken, moving farther southeastward, away from the
area, & the pressure gradient further relaxes.

&&

.AJK WATCHES/WARNINGS/ADVISORIES...
PUBLIC...None.
MARINE...Small Craft Advisory for PKZ036-641>643-652-661>664-671-672.

&&

$$

SHORT TERM...ZTK
LONG TERM...BAS
AVIATION...JLC
MARINE...JLC

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