Stay up to date with notifications from The Independent

Notifications can be managed in browser preferences.

Moderate flooding is expected from a glacial dam outburst in Alaska's capital city

A flood warning has been issued after an outburst from a glacial lake in Alaska’s capital city

Via AP news wire
Saturday 19 October 2024 17:01 EDT
Alaska Flooding Glacial Dam
Alaska Flooding Glacial Dam (Copyright 2023 The Associated Press. All rights reserved)

Your support helps us to tell the story

From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or producing our latest documentary, 'The A Word', which shines a light on the American women fighting for reproductive rights, we know how important it is to parse out the facts from the messaging.

At such a critical moment in US history, we need reporters on the ground. Your donation allows us to keep sending journalists to speak to both sides of the story.

The Independent is trusted by Americans across the entire political spectrum. And unlike many other quality news outlets, we choose not to lock Americans out of our reporting and analysis with paywalls. We believe quality journalism should be available to everyone, paid for by those who can afford it.

Your support makes all the difference.

A flood warning was issued Saturday after an outburst from a glacial lake in Alaska's capital.

Suicide Basin is a side basin of the Mendenhall Glacier above the city of Juneau. Since 2011 it has released glacier lake outburst floods each year that cause inundation along Mendenhall Lake and Mendenhall River.

“We expect moderate flooding from this event, not major flooding,” said Nicole Serrin, warning coordination meteorologist with the National Weather Service in Juneau.

Residents had 24 to 36 hours to prepare for flooding, she said. The flood warning was in effect until Monday.

The forecast called for the river to crest at around 11 to 11.5 feet (3.35 to 3.5 meters) early that day, the weather service said.

Officials warned people to stay away from the river. Recent snow has made the banks very slippery.

Suicide Basin fills with rainwater and snowmelt during the spring and summer and at a certain point builds enough pressure to force its way out through channels it carves beneath Mendenhall Glacier.

The basin started refilling with fall rain over the last couple of months, Serrin said. It was not certain how quickly it will drain or if it will empty completely.

In August an estimated 100 homes and some businesses were damaged after the lake sent floodwaters into neighborhoods.

The Mendenhall River crested at 15.99 feet (4.9 meters) then, a new record, topping the level during last year’s flood by about a foot, and the water reached farther into the Mendenhall Valley, officials said.

Juneau, a city of about 30,000 people in southeast Alaska, is reachable only by plane or boat.

Thank you for registering

Please refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged in