NASA Earth Observatory images by Joshua Stevens, using Landsat data from the U.S. Geological Survey. Deadly August 2015 landslide near Sitka, Alaska. These include the numerous ground failures that resulted from the 1964 Great Alaska Earthquake, which were Alaska Landslide: Officials Identify Third Body. Many creeks and lakes were at risk of flooding on Wednesday with one to two inches of rain in the forecast through the end of the day. Juneau resident Rhett Morgan said about 2-3 inches of water flowed into his garage. #akwx @KTOOpubmedia @KRBDRadio @ravenradio @KHNS_FM @KFSK1 pic.twitter.com/sKvrlGwjfr. federal government agencies, and the general public. Southeast Alaska is taking a beating from a series of storms bringing high winds and heavy rain. These include the numerous ground failures that resulted from the 1964 Great Alaska Earthquake, which were particularly significant in and around Anchorage. Landslides and rising water across Southeast as rain breaks records and keeps falling, Jennifer Pemberton, Alaska's Energy Desk - Juneau, Rhett Morgan said about 2-3 inches of water flowed into his garage, Evacuations and a search for missing after rains prompt large landslide in Haines, Here’s ASD’s latest plan to bring Anchorage students back to classrooms, Unable to reach hospital because of weather, Pilot Station man dies of COVID-19. “It is well established that Alaska sees large landslides in the spring, and that their increasing size and frequency is driven by global heating,” Petley wrote. … It’s just wet and crazy,” he said with a laugh. lobes—that are threatening the highway. Alaska State Department of Natural Resources had also warned about the situation in May this year as they issued a press release about a possible landslide-triggered tsunami because of the melting glacier. Because landslides can potentially impact people and infrastructure in Alaska, DGGS conducts studies to evaluate unstable slopes and provide valuable information to policy makers, state and No … Scientists have found such an unstable slope near Barry Glacier in Alaska, the United States that stands the chance of failing and causing a mega tsunami bringing damage and destruction on a massive scale. In a normal year, cruise ships carrying up to 4,000 passengers transit Glacier Bay’s steep-walled fjords hundreds of … (Note: The USGS monitoring site on Harbor Mountain should not be confused with the Alaska DNR weather station, also on Harbor Mountain.) “I didn’t really know what to do at first so I went to Home Depot, and they were closed last night, and banged on the door until they let me get some sandbags.”, This storm is one for the record books. “This is like the first flood that I’ve been a part of,” Morgan said. On July 25, Stark noted a possible landslide event in southeastern Alaska. Many coastal areas in Southcentral and Southeast Alaska are susceptible to tsunamis generated by landslides, and history records several such events, including the 1958 Lituya Bay and the 2015 Taan Fjord tsunamis. These landslides resulted in three fatalities and substantial Ketchikan was soaked with about 9.5 inches of rain over the Thanksgiving weekend, according to federal meteorologists. In general, landslides are classified based on the material type being transported and the mechanics of how the material moves. evaluated unstable slopes in a historically problematic area of slope failure along the Richardson Highway south of Glennallen; and investigated alpine-sourced debris flows Nearly a foot of rain fell in Pelican over the last 48 hours. Alaska and landslide tsunamis Alaska is no stranger to landslide-induced tsunamis. Heavy rain, high winds and saturated soil bring the potential for landslides, and that’s a particular concern for city officials in the Prince of Wales Island community of Craig. His initial analysis of the seismic data suggested the slide occurred in eastern Alaska and had a mass of about 20 million metric tonnes (22 million tons). The researchers said: “Landslides have set off giant waves elsewhere in Alaska and Greenland during the past decade. mass movement and evolve into another as material moves downslope. along the Haines Highway in an area of frequent rock fall. It caused a tsunami that inundated an area over 20 km 2, whereas the landslide debris itself deposited within a much smaller area of approximately 2 km 2. Tsunamis caused by submarine (below water) and subaerial (above the water) landslides are a serious hazard in bays and fjords of coastal Alaska, particularly in Southeast and South-central Alaska. Landslides in Alaska. According to Troopers there has been a landslide in Haines which has damaged at least one house and has possibly cut off access to the airport. One such research conducted by scientists in Alaska, United States, has warned of an impending mega tsunami in the state which can be triggered by a landslide. There are many examples of landslides that have significantly impacted Alaska. Juneau, Alaska (KINY) - Alaska State Troopers and other agencies are on the ground in Haines. For a closer view, Alpine Air Alaska has posted aerial photographs and a video. Photo from U.S. Coast and Geodetic Survey archives. (Photo courtesy of the Alaska State Library historical collection) The City and Borough of Juneau is warning residents to be prepared in case heavy rains and snowmelt cause landslides … High winds, flooding and landslides caused moderate to severe damage in communities across Southeast Alaska Wednesday, as an atmospheric river … The downpour inundated low-lying areas around nearby Ward Lake, and 50 mph gusts knocked out power north of town early Tuesday morning. In 2004, an area of the Alaska Highway near Northway was rerouted because of a slope failure. The Alaska Department of Transportation & Public Facilities (DOT&PF) frequently deals with geology, lithology (rock or sediment type), vegetation, and water. Petersburg saw over eight and half inches of rain from the storm as of Wednesday. High winds, flooding and landslides caused moderate to severe damage in communities across Southeast Alaska Wednesday, as an atmospheric river stalled over the region and brought record-breaking rain. Landslide potential depends on a number of factors, including topography (slope), DGGS is currently involved in a number of landslide assessment and monitoring projects in Alaska, including: Alaska Division of Geological & Geophysical Surveys, Alaska Department of Transportation & Public Facilities, AKDOT&PF's Geotechnical Asset Management Program, Division of Geological & Geophysical Surveys. damage to infrastructure, including roadways and homes. At the landslide's current elevation, its mass would trigger a tsunami with waves hundreds of feet tall in Barry Arm. KETCHIKAN, Alaska (AP) — A landslide in a city near the southern tip of the Alaska Panhandle demolished the back side of a grocery store. Developing landslide inventory/susceptibility maps and modeling potential debris flow runout for the Sitka and Homer areas; Monitoring the movement of frozen debris lobes encroaching on the Dalton Highway in the southern Brooks Range in collaboration with the University of Alaska Fairbanks; Assessing the landslide and tsunami hazards in the upper Barry Arm with multiple state, federal, private and university entities. Landslides and rising water across Southeast, rain breaks records and keeps falling – Alaska Public Media News The floor exterior of the AWARE workplaces on Glacier Avenue in Juneau is roofed in particles after a mudslide on December 2. In Alaska, degrading permafrost, steep slopes, heavy rain, retreating glaciers, ground-shaking from earthquakes, and isostatic As of about noon Wednesday, he says water levels are coming up to some homes’ baseboards and door seals, and the river carved away a small embankment near city hall, but he hasn’t had to close roads. 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