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The LEO Network is a worldwide network of observers and experts that share their observations of environmental change.
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Observations

Injured skier rescued after Girdwood avalanche sweeps him hundreds of feet down mountain
The slide occurred at a time when forecasters in the region are cautioning backcountry skiers and snowboarders about the potential for warming weather to increase avalanche risk.
Girdwood, Alaska, United States
Anchorage Daily News

Ketchikan evacuees can return home with potential for dam failure subsiding, officials say
Ketchikan officials say there’s “currently no danger of dam failure” but noted that a flood advisory is in place through Sunday.
Ketchikan, Alaska, United States
Anchorage Daily News

Tsunami warning canceled after 8.2 offshore earthquake sent people in many Alaska coastal communities to higher ground
The Tsunami Warning Center recorded waves of less than 1 foot above normal as a result of the earthquake.
Chignik, Alaska, United States
Anchorage Daily News

DOT to evaluate cracks on Kivalina evacuation road
Kivalina residents report cracks on the sides of the recently built evacuation road which connects the village to the storm refuge site and the school. The team with the Alaska Department of Transportation & Public Facilities plans to visit the village and assess the damages at the end of August.
Kivalina, Alaska, United States

Hatcher Pass Road opens for summer, but with winter lingering
The Hatcher Pass Road in Alaska has opened for the summer season, but deep snow remains at higher elevations, with crews spending the last week digging out the road over the pass before opening it.
Palmer, Alaska, United States

Winds down but high water just starting as ‘exceptionally strong storm’ batters Northwest Alaska
Forecasters say they are expecting significant coastal erosion from Utqiagvik to Unalakleet from the second severe-weather event to hit the region in three weeks.
Utqiaġvik, Alaska, United States

Car strikes large boulder on rockfall-prone stretch of Seward Highway
No one was injured when a car hit a 6-foot-by-8-foot rock that fell from cliffs next to the Seward Highway late Wednesday.
Anchorage, Alaska, United States

Avalanche closes road to Hatcher Pass
Class 2 avalanche in Hatcher Pass closed down a section of the road between Mile 14 and 16. The nonprofit Hatcher Pass Avalanche Center warned that conditions in the area were dangerous and asked that people avoid the Archangel Road trail nearby.
Hatcher Pass, Alaska, United States

Along Utqiaġvik’s eroding coast, hope that a seawall can help keep the community safe
In Utqiaġvik, where the coast is eroding at some of the fastest rates in the nation, storms, flooding and thawing permafrost damage houses, roads and cultural sites. Ice forms later each year and storms are becoming longer and more severe.
Utqiaġvik, Alaska, United States

Port Heiden loses road access to safe harbor and old village
Port Heiden’s road to its harbor and old village site is crumbling into the sea and the lake on the other side of it will likely breach soon. “The road is basically gone. [Erosion]’s cut right half into the road,” said Scott Anderson, the Native Village of Port Heiden’s Tribal Environmental Director.
Port Heiden, Alaska, United States

Tsunami warning canceled for swath of coastal Alaska after 7.8 earthquake prompts evacuations
People in Kodiak, Homer and Sand Point were among those who headed to higher ground after the quake prompted a tsunami warning from the Alaska Peninsula to the western Kenai Peninsula.
Chignik, Alaska, United States

McDonald Fire remains west of Tanana River
The McDonald Fire has grown to over 39,000 acres west of the Tanana River, with statewide fires consuming 72,000 acres; critical fire danger and smoke advisories are in effect.
West of the Tanana River, Alaska
Fairbanks Daily News-Miner

Warm temps and wind fan Interior fires
An evacuation alert was also issued Friday for residents of the Lower Salcha River, from river mile 3 to 40. The Middle Salcha remains under a SET status, from river
Salcha, Alaska, United States
Fairbanks Daily News-Miner

Evacuation order issued for Chena Hot Springs area as wildfire grows to nearly 20,000 acres
As of Monday evening, no structures had been damaged in the Munson Creek Fire, which was less than a half mile from the popular resort.
Pleasant Valley, Alaska, United States

Heavy rain and continuing erosion force Napakiak to block main street
Winds gusted up to 46 mph and about 2.4 inches of rain fell from Friday to Sunday.
Napakiak, Alaska, United States

Unprecedented erosion in Akiak swallows up to 100 feet of riverbank
Akiak City Administrator David Gilila says the village is in danger of becoming an island in the Kuskokwim River.
Akiak, Alaska, United States

Scientists: Potential landslide could generate large tsunami in Prince William Sound
The rapid retreat of Barry Glacier, 28 miles northeast of Whittier, could release millions of tons of rock into Harriman Ford and generate a large tsunami in Prince William Sound, according to Alaska's top geologist.
Barry Arm
Fairbanks Daily News-Miner

Tsunami warning issued following 7.4 magnitude earthquake off Alaska Peninsula
A tsunami warning was issued for areas along the Alaska Peninsula coastline following the 7.4 earthquake, which was centered 62 miles from Sand Point.
In this post, you can find links to the US Tsunami Warning Centers, as well as information on creating home emergency kits during COVID.
We hope everyone stays safe as this event unfolds, and welcome observations of conditions along the Alaska Peninsula.
Sand Point, Alaska, United States

A Denali glacier is speeding downhill, potentially hampering climbers and increasing flood risk
Muldrow Glacier on the north side of Denali is surging for the first time since the 1950s — moving 50 to 100 times faster than its usual pace. The surge was first glimpsed by K2 Aviation pilot Chris Palm last month. “I was thinking it looks really difficult to get onto the glacier right now,” Palm said. “It’s all shattered and torn up and jagged ice and deep crevasses everywhere.” The event could impact mountaineers scheduled to use the north approach to the mountain .

Giant ice craters, ruts and street-squeezing snow berms: Anchorage road conditions are improving but still causing chaos
Auto shops are seeing more business because of damaged tires, and drivers are often inching through a messy maze of bad road conditions. Road crews are making headway but still catching up from unfavorable weather last month.
Anchorage, Alaska, United States

‘Pretty unnerving’: Eroding cliff creeps closer to popular trail at Point Woronzof
City park staff have set up barriers in hopes of encouraging passersby to stay far away. Potential fixes could include putting up a wall and relocating the bike path or road.
Susitna, Alaska, United States

State investigates Prudhoe Bay wells after a second North Slope well ‘jacked up’ and leaked oil and gas
The incident appears similar to an oil and gas release in 2017 blamed on thawing permafrost and hot production fluids.
Prudhoe Bay, Alaska, United States

Two rare earthquakes shake western Alaska coast
Two quakes shook the coast of the Yukon-Kuskokwim Delta Tuesday night about 45 miles offshore of the community of Hooper Bay.
Hooper Bay, Alaska, United States

As permafrost thaws, Western Alaska village cemeteries sink into swampland
In villages like Kongiganak, communities have stopped burying their dead because, as the permafrost melts, the oldest part of their cemetery is sinking.
Kongiganak, Alaska, United States

Alert level raised after explosion at remote Alaska Peninsula volcano
Satellite and webcam views indicated low-level ash emissions from Mount Veniaminof volcano. The ash plume did not rise above 10,000 feet, the Alaska Volcano Observatory said. Minor ash deposits are visible at the volcano, located 480 miles southwest of Anchorage.
Mount Veniaminof

Seward Highway reopened after landslide
Temperatures in the area were unseasonably high last week, reaching into the mid-40s, according to the National Weather Service. Then temperatures dropped below freezing Sunday and into Monday morning. "There's a lot of water flowing underground in this area," McCarthy said. The freeze-thaw "caused some instability and that made it slide."
Anchorage, Alaska, United States

Heavy rain causes flooding, mudslides in Juneau
Areas of the Southeast Alaska city “received between 3 and 7 inches of rain” in 24 hours over the weekend. The sodden ground caused mudslides in some areas, and wrecked roads and ditches around John Street and Peters Lane in Douglas.
Juneau, Alaska, United States

Across much of the Arctic, a thawing landscape is sinking
Because ice makes up a good portion of the underground foundation of northern Alaska, thawing has dropped the landscape as much as 3 feet in some places.
Kaktovik, Alaska, United States

Why Alaska's Arctic tundra is slowly sinking
Alaska’s tundra landscapes carpet a good portion of the state, from the North Slope to the elbow of the Alaska Peninsula. Researchers say it's slowly sinking in places -- as much as a fifth of an inch each year.
Teller, Alaska, United States

Dozens of wildland fires reported across Alaska’s Arctic
As of Tuesday, two new fires had started in the Galena Zone, bringing the total number of fires in the area to 35. To date this year, wildland fires have burned more than 44,000 acres in the region.
Point Hope, Alaska, United States

Smoke from northeast Alaska fires drifts into Fairbanks
Smoke from a handful of fires in northeast Alaska and across the border in Canada drifted south to Fairbanks on Tuesday and is expected to linger through Wednesday night.
Fort Yukon, Alaska, United States

Erosion is creeping toward Alaska’s coastal radar sites
The Air Force is trying to better understand the erosion bearing down on its valuable radar sites.
Kaktovik, Alaska, United States

Alaska gets federal disaster help after North Slope storm
A September storm caused damage in Utqiagvik, and Gov. Bill Walker declared a disaster there last month.
Utqiaġvik, Alaska, United States

A one of a kind northern permafrost cliff
In northern Alaska, an amphitheater of frozen ground thaws where a northern river cuts into it, exposing walls of ice. The feature, known by scientists as “yedoma,” is the largest of its kind yet found in Alaska. A great wall of ice holds a lot of treasures from the past, which science is eager to explore.
Nuiqsut, Alaska, United States

Landslides close dock, cause cruise stop cancellations in Skagway
At least 36 ships will skip scheduled stops in Skagway this summer because the cruise dock closed after a landslide sent debris toppling from the mountain above.
Skagway, Alaska, United States

McCarthy Road partially reopened near Chitina after collapse
The McCarthy Road was closed between Mile 0 and 1 in Chitina on Monday, June 3, 2024, after a portion of the road sank. The transportation department is still assessing the cause of the road settlement, Perreault said, but it is not river washout or a landslide.
Chitina, Alaska, United States

A once-popular Anchorage mall has become an illegal dumping ground
The Northway Mall in northeast Anchorage sits almost totally empty. That’s led to people dumping loads of trash, furniture, appliances and industrial waste all over the property.

Earthquake swarm signals unrest at volcano in Alaska’s western Aleutian Islands
It’s not clear whether the unrest will lead to an eruption at Tanaga Volcano, which is located on an uninhabited island about 65 miles from Adak.
King Cove, Alaska, United States

A landslide left an Anchorage 10-year-old unconscious and trapped in her room. Her parents pulled her from the debris.
“This has been a very trying time,” mother Tanisha Charles said. “You don’t prepare for this. You think of fires, you think of earthquakes, but you never think of a mudslide in the middle of town.”

Volcano erupts on Atlantic island; lava destroys some homes
The president of the Canary Islands said that by 11 p.m. some 5,000 people had been evacuated from their homes.
Los Llanos de Aridane, Canary Islands, Spain

Landslide closes park road at Denali, buses stranded for about five hours
Of the 140 unstable slopes along the 92-mile park road, Pretty Rocks has the most potential to disrupt traffic.
Cantwell, Alaska, United States

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