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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

Agencies complete initial cleanup of diesel spill following work train derailment near Talkeetna
The Alaska Railroad believes between 800 and 1,000 gallons of fuel were spilled, according to a situation report released Monday by the state.
Talkeetna, Alaska, United States
Anchorage Daily News

Houston man injured in moose trampling outside his home
A Houston man was injured by a moose near his home, an unusual event linked to increased moose aggression due to harsh winter conditions.
Houston, Alaska, United States
Anchorage Daily News

Borough declares local disaster for Talkeetna flood damage
In less than a day, the riverbank was eroded back more than 60 feet, threatening some cabins near the river.
Talkeetna, Alaska, United States
Alaska Public Media

Moose with lesions on hind leg
The hind of the moose was also covered with flies.
Willow, Alaska, United States
Sarah Yoder, Kimberlee Beckmen, Mike Brubaker

Insect on cloud berries
Is the abundance of insects unusual? Updates from around the state with picking and weather impacts.
Trapper Creek, Alaska, United States

Cold, wet weather delays lucrative peony harvest in Southcentral Alaska
Alaska is one of the only places in the world where peony flowers grow in the summer months. But the unusually cold, wet weather this year is delaying the blooms by weeks.
Willow, Alaska, United States
Alaska Public Media
Tim Rockey, Alaska Public Media - Anchorage

Iditarod mushers cope with warm temperatures as they arrive at Alaska Range
Mushers shrugged off jackets and dogs sunbathed in the snow as temperatures hovered around 40 degrees — hot by Alaska winter standards.
Rainy Pass, Alaska
Alaska Public Media
Lex Treinen, Alaska Public Media - Anchorage

Mat-Su flooding closes roads, threatens homes after deluge soaks Talkeetna Mountains
August 9, 2022 Borough officials said multiple roads were closed Tuesday and more were being monitored after several days of rain.
Houston, Alaska, United States
Anchorage Daily News

Caterpillars on Kesugi Ridge
Hikers on Kesugi Ridge observe a large abundance of Rusty Tussock Caterpillars all over cairns marking the trail from Coal Creek to Byre's Lake. They swarmed on the hiker's bodies and packs and from a distance covered structures to the point where they looked black.
Chase, Alaska, United States
Jessie Moan, Carl Roland, Kendra Wissel, Adrienne Fleek, Sarah Stehn

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 .

Weather strands travelers in small planes on glacier near Denali
Five people stayed overnight Friday on Ruth Glacier. On Saturday, guides led them to a shelter about 3.5 miles away, A historic storm dropped record amounts of snow throughout Interior Alaska during the last few days..
Ruth Glacier, Alaska, United States

Late Blooming Rose
A wild rose (*Rosa acicularis*) blooms late during a warm fall.
Willow, Alaska, United States

Waterfowl Disappearance and Other Lake Ecosystem Changes
Residents note significant changes in the Christiansen Lake ecosystem since 2019. This includes fewer nesting birds, fish, and mammals around the lake, while the leech population has increased along with the occurrence of algal blooms.
Talkeetna, Alaska, United States

Mat-Su declares disaster after Willow Creek flooding forces evacuations, closes bridge
Flooding on Willow Creek Saturday night and Sunday has led to seven families being evacuated, with five people taking shelter at the Willow Community Center. The Willow Fire Department, Mat-Su Animal Care and the Mat-Su Water Rescue Team organized to assist those impacted by the flood.

More than a dozen homes evacuated due to Willow Creek flooding; Mat-Su officials say bridge could be closed for days
The flooding started when large chunks of ice jammed at Deneki bridge, according to an advisory issued by the National Weather Service.

Record heat has Susitna Valley silver salmon in hot - and low - water
Two popular rivers are being closed to fishing because almost no cohos are making it upstream.

Wildfire along Parks Highway burns at least 50 structures
The highway remained closed north of Willow after the fire jumped the road Sunday, authorities said. The fire started Saturday afternoon when wind blew a tree onto a power line.

Alaska salmon stream hits high temperature during heat wave
The science director for Cook Inletkeeper, a nonprofit organization that monitors the health of Cook Inlet, wrote a paper two years ago on what salmon streams might be like in the future with climate change.
The Seattle Times

Trees Devastated by Spruce Bark Beetles (Dendroctonus rufipennis)
"My family and I have been RV camping across Alaska for the last several years. This year, the mass amounts of dead spruce trees have been more apparent than any year prior."
Chase, Alaska, United States
Adrienne Fleek, Desirae Mack, Tricia Wurtz

Invasive elodea prompts closure of Susitna Valley lakes
Elodea was discovered in Alexander Lake in 2014 by researchers checking minnow traps. At the time, it covered 20 percent of the lake but now has spread to 90 percent.
Alaska Journal of Commerce

Spruce bark beetle damage shuts down 2 popular Alaska campgrounds
The closures of the campgrounds, facing the threat of falling trees, likely will last through summer, the state parks division said.
Fishhook, Alaska, United States

Voracious spruce bark beetles are back in force in Southcentral Alaska
Dead, red trees signal an increasingly dire outbreak driven by warm summers and plentiful spruce, especially in the Susitna Valley.
Trapper Creek, Alaska, United States

Railroad traffic still stalled as Talkeetna flooding recedes
Flooding that halted Alaska Railroad trains north of Talkeetna Saturday, has receded, but train traffic remains shut down. Listen now
Curry, Alaska, United States

‘Wall of ice’ from Susitna River damages railroad tracks
A 7-foot "wall of ice" from a Susitna River ice jam slammed into Alaska Railroad tracks north of Talkeetna on Saturday, pushing the rails 25 feet off course, the railroad said Monday.The Alaska Railroad is racing to make repairs in time for the start of its tourist season on Wednesday.

State veterinarian urges farmers to watch for new diseases in Alaska wildlife, livestock
State Veterinarian Bob Gerlach told a crowd that turned out Saturday for the 46th Annual Delta Farm Forum that diseases that afflict livestock and wildlife are increasingly showing up in Alaska. Listen now
Alaska, United States
KUAC TV 9

Ticks Gorge on Squirrel
These ticks may have been an example of one native species in Alaska.
Bryers Lake State Recreation Area, Alaska , United States

At Denali base camp, unseasonable warmth creates dangers for climbers
The fall of a climber into a crevasse highlighted this season's risky combination of crumbling snow bridges and splintered climbing teams.
Kahiltna Glacier, Mount Denali, Alaska, United States
Alaska Dispatch News

Miserable stretches of trail prompt Iditarod to move race start to Fairbanks
For the second time in three years, the Iditarod Trail Sled Dog Race will move its official start from Willow to Fairbanks due to poor trail conditions that race officials determined unsafe.
Alaska Dispatch News

Earliest River Break Up Ever
Earliest Tokositna River break up ever in Denali State Park.
Denali National Park, Alaska, United States

Early Willow (Salix scouleriana) Bloom
Early Pussy Willows in Denali Park.
Denali Park, Alaska, United States

Grounded Murres (Uria aalge)
Flocks of Common Murres were seen flying overhead, along with dying and grounded birds scampering around the Fish Lake area, just to the southeast foothills of Mount Yealo in the Susitna Valley.
Mount Yealo, Alaska, United States

Wildfire
Sockeye wildfire at mile post 77 of the George Parks Highway near Willow.

Scientists are analyzing data from Denali’s Muldrow Glacier surge, which might unravel answers about the world’s glaciers
The glacier advanced just over 3.5 miles and moved about 65 feet per day earlier this year. Studying the surge involved a massive undertaking.
Muldrow Glacier

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