Area Forecast Discussion
Issued by NWS Juneau, AK

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FXAK67 PAJK 242257

Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
257 PM AKDT Tue May 24 2022

.SHORT TERM.../Through Wed night/ The short range forecast is
showing gradual improvement over the next 36 hours. Already
showers are becoming less frequent and cloud cover is starting to
show some breaks especially over the southern panhandle. This is
mainly due to some weak onshore flow still ongoing for the north
while the south is seeing a switch to more light offshore flow
this afternoon.

The general trend in the forecast is for drier and less clouds
into Wed and Wed night. Some showers will still linger across the
north this evening, but should be light, and few and far between.
Significant breaks in the cloud cover are opening in the southern
panhandle this afternoon, will continue to remain open tonight,
and may expand in coverage tomorrow as light offshore flow expands
in area. In light of this the main change in the forecast was a
lowering of cloud cover potential across the area. A consequence
of this is that high temps tomorrow are expected to be a little
warmer then today with mid to upper 50s more common. Overnight
lows will be a little cooler with upper 30s to mid 40s common.
These highs(lows) could be higher(lower) if any substantial breaks
in the clouds linger over an area. A little patchy fog is also
possible tonight with the low winds and less cloud cover.

Little in the way of wind around the area except for Lynn Canal
and Skagway where 20 kt southerlies are still blowing as of 1 pm.
That wind should diminish and switch to the north tonight as the
ridge that is building over the gulf and panhandle reaches farther
north. Elsewhere, winds will mainly be 15 kt or less most places
with NW or N flow prevalent Wed into Wed night.

.LONG TERM.../Thursday through Monday/ High pressure builds in
over the gulf, increasing offshore flow over the northern panhandle.
A low moves north over Haida Gwaii Friday before weakening and
dying as high pressure pivots east through Monday. An easterly
wave tracks west across the southern panhandle Saturday. By late
weekend, the high pressure ridge axis shifts east over the
panhandle, getting rid of any precip chances and cloud cover.

Thursday, the southern panhandle will see increased cloud cover as
the previously mentioned low moves over Haida Gwaii. Beginning
Thursday afternoon a chance of scattered showers move into the
southern panhandle and hold on through Saturday. With the
increased cloud cover and precip in the area, temperatures will be
cooler across the south, low 50s. For the rest of the panhandle,
offshore flow aids in decreased cloud cover and dry weather.
Friday, an increase in cloud cover is expected due to the low to
the south, but expecting precip to stay across the south.

Saturday, partly cloudy to overcast skies look favorable as an
easterly wave tries to spread over the southern panhandle. Some
scattered showers along the Coast Mountains and across the south
are possible. By Sunday, the surface ridge shifts further east
allowing for clearing skies and chances of precip to exit the
region. In return, temperatures warm into the mid to upper 60s
across the panhandle.






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