US National Weather Service Juneau Alaska

08/07/2026

Posted 8/6/2026 around 6:55 pm local time

Good evening SE AK!

Still not much to report weather wise across the region with high pressure dominant over the central gulf keeping the atmosphere relatively stable over the panhandle. This means marine layer redevelopment overnight for the outer coast, likely spreading into Cross Sound and Icy Strait into Friday morning followed by continued overcast skies later in the day. Marine layer fog has already developed in the vicinity of Cross Sound within the past couple of hours, evident in FAA weathercams, and is expected to persist into Friday morning. Similar to today, some breaks in the cloud deck are possible in the afternoon hours, but would likely be few and far between, meaning daytime highs should stay relatively mild in the low to mid 60s with minimal sea breeze development. Lone exception should ne northern Lynn Canal which should see winds pick up out of the south to around 15 kt by the afternoon with strongest winds near Taiya Inlet.

An upper level disturbance approaching the southern panhandle will bring increasing chances for light rain by the afternoon, slowly spreading northward by Friday night. See the latest forecast details by visiting weather.gov/juneau

08/06/2026

How should I prepare for a flood? Make sure that you know where your main breaker is so you can shut off power to your home if needed. All residents should be prepared for an outage, particularly if your home is near the flood zone. Should I shut off my main electrical breaker? If flooding of your h...

08/06/2026

Are you signed up for CBJ emergency alerts? We’ll be sending critical, detailed updates on Su***de Basin and its release, so sign up at bit.ly/cbjalerts.

If you have a National Oceanic and Atmospheric Administration (NOAA) radio, visit www.youtube.com/watch?v=IL5aYtdEslw to learn how to set up your radio to receive notifications from the US National Weather Service Juneau Alaska.

All cellphones in the Juneau area will receive a notification when it’s time to evacuate. So even if you don’t sign up for alerts, we’ll make sure to notify you when an evacuation advisory is called. Signing up for CBJ alerts will provide you with more detailed updates on the flood and response.

Visit bit.ly/juneaufloodready for more information on how to prepare ahead of .

08/06/2026

In Thursday morning's nighttime mircrophysics satellite loop over Southeast Alaska as you can see the non moving marine layer across the panhandle region staying in place. Pockets of fog, light drizzle are possible this morning. Expect the clouds to remain, with rain beginning to spread to the southern panhandle Friday.

08/05/2026

Su***de Basin status update
Wednesday 8/5/2026 at 230pm

As of Wednesday afternoon, the water levels in the basin have reached near 1340ft, which is about 10 ft away from the estimated top of the glacial ice dam at 1350ft. Over the last several days we have seen a daily rise of water levels about 2 to 3 ft per day. From this, we estimate that we will see a full basin with overtopping occurring by August 8-10th. Overtopping is when water starts to flow out of the basin into the overflow channel on the side of the Mendenhall Glacier. Once overtopping occurs, we typically see a basin release within 6 days.

If you live along the Mendenhall River and are in the Flood Zone, final preparations to property should be completed. Furthermore, you should have a plan in place for when the basin begins to release. Stay tuned to weather.gov/juneau for official updates.

08/05/2026

Good afternoon SE AK,

Overcast skies remain across the panhandle as high pressure remains over the gulf. This high pressure has allowed us to have more benign weather, with very minimal rain, but it has allowed onshore flow to continue. This onshore flow, with light winds, is what is helping to keep overcast skies across the area. A very similar weather pattern will continue through the week as high pressure remains.

-- Posted 08/05/2026 at 12:45 PM --

08/05/2026

08/05/2026

While not stunning for views in Southeast Alaska, the stable weather pattern and the marine cloud deck over the gulf and panhandle is keeping the active and stronger systems away from the panhandle. Which is benefiting the Juneau area with a lower water level in Mendenhall Lake, which should minimize some potential flood issues, when the GLOF (Glacial Lake Outburst Flood) starts as it will need to fill the Lake up first. The lake is currently at 3.5 feet this morning and bank full level is 8 feet and minor flood stage is 9 ft.

The webpage dedicated to the GLOF can be found here.

The USGS did install the overflow channel camera and it is sending images. Images are sent hourly via the cell network but only sends images during low network traffic. The USGS is also looking to add a second overflow camera to the left of the current view of the overflow channel. 

08/04/2026

08/04/2026