CBJ Alerts

UPDATE: Suicide Basin Outburst Underway - Crest Now Expected Earlier Tuesday Morning

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155 Heritage Way  ▪  Juneau, Alaska  99801  ▪  907-586-5240 


INFORMATION RELEASE
September 15, 2025
UPDATE: Suicide Basin outburst crest expected earlier Tuesday morning
 
The National Weather Service (NWS) has issued a flood warning for the Mendenhall Lake and River following a glacier-dammed lake outburst at Suicide Basin. Minor flooding impacts are expected late Monday through Tuesday afternoon in the Mendenhall Lake and River near areas around the Mendenhall Glacier Visitor Center, the Mendenhall Campground and Skater’s Cabin Road, View Drive and possibly below Back Loop Bridge.

UPDATE:
  • The National Weather Service has updated the predicted timeline of the glacial lake outburst flood currently underway. The river is now expected to crest between 2 a.m. - 6 a.m. Tuesday morning.
  • The predicted crest height has not changed. It is expected to reach between 11FT - 12FT.
  • Read the full NWS flood warning and condition updates are available at https://www.weather.gov/ajk/suicideBasin.
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Residents can contact floodresponse@juneau.gov and (907) 713-4478 with non-emergency flood inquiries and questions.
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