Earth Changes
With record snowmelt and rainfall threatening to create the second major U.S. flood disaster in as many months, the Army Corps is scrambling to drain six massive reservoirs in Montana and the Dakotas. The corps is releasing water more than twice as fast as has ever been attempted since the reservoirs were built some 50 years ago.
The disaster is caused by record snowmelt from the Rocky Mountains, which experienced snowpack of more than 140 percent of average this year, and historic rainfall totals that are funneling more water into the Missouri River than has been seen since record-keeping began in the 1890s.
"We've described it as a perfect storm," said Jody Farhat, who oversees water management in the basin for the Army Corps' Omaha District.
For more than a century, Farhat said the system has always demonstrated the capacity to absorb what weather surprises nature dealt. Not this year.

A Chinese man pushes a makeshift drum raft while a child sit on it in a flooded street in Xianing city in central China's Hubei province on Wednesday, June 15, 2011.
Flooding from this month's seasonal rains has already forced hundreds of thousands of people from their homes and left more than 170 dead or missing.
Two people died in the southern province of Guizhou after being struck by lightning, the official Xinhua News Agency said. Two others died after being washed away by floods Friday evening. Xinhua said four other people died but did not provide details.
The Ministry of Civil Affairs said Friday that flooding and rains have killed 25 people, left 25 missing and forced about 671,200 from their homes since Monday.
Xinhua did not say whether the most recent fatalities were included in the 25.
The torrential rains are forecast to continue through the weekend.
Landslides crushed parts of a railway line in southwestern China on Thursday evening, stranding 5,000 passengers on four trains, railway officials said.
About 1,200 workers are continuing to clear tracks and make repairs along the Chengdu-Kunming railway line, which links the capitals of Sichuan and Yunnan provinces, Xinhua said.

Record snowfall in the mountains above the Missouri and Platte rivers has contributed to flooding along both rivers. With the official start of summer only days away, much of the snow has yet to melt. Highway 130 in the Snowy Range between Laramie and Saratoga in southern Wyoming didn't open until June 10, two weeks later than scheduled. This photo was taken Monday, June 13, 2011.
Half of the record snowpack in the upper basin of the Colorado and Wyoming mountains has melted and flowed into Seminoe Reservoir, said John Lawson, the U.S. Bureau of Reclamation's manager for the Wyoming area.
Seminoe is the first of seven bureau reservoirs that capture and store runoff from the mountains, mainly for irrigation. That water eventually flows into Nebraska, via the North Platte River, and is stored at Lake McConaughy near Ogallala.
Lawson said the snowpack hasn't been this heavy since 1909 and 1917. The bureau believes this year's runoff will match or exceed those two years, Lawson said.

A boat covered by volcanic ash sits docked on the bank of Nahuel Lake on Thursday in southern Argentina.
The cloud - which has disrupted flights in Argentina, Brazil, Uruguay, Australia and New Zealand on its around-the-world trip - on Friday forced Chilean officials to cancel domestic flights for the first time since the Cordon Caulle volcano began erupting June 4.
LAN airlines suspended flights to the cities of Puerto Montt, Coyhaique and Punta Arenas in the far south of the South American country. While ash from Cordon Caulle has wreaked havoc with air travel abroad, it had left Chile's internal flights largely untouched until Friday.
"The tip of the cloud that has traveled around the world is more or less in front of Coyhaique," said Civil Aviation Office chief Pablo Ortega. Coyhaique is 800 kilometers (500 miles) south of the volcano.

Alred Marina on Lake Guntersville was damaged in an April 27 tornado track added Thursday by the National Weather Service.
The National Weather Service office in Huntsville added four new tornado tracks, all in Marshall County, to raise the total to 37 separate tornadoes in North Alabama.
The Huntsville office on Friday also upgraded the deadly EF-4 that struck DeKalb County, raising the estimates to an EF-5. That's the most powerful level on the Enhanced Fujita scale, indicating winds exceeding 200 mph. The only other EF-5 on April 27 ran along the ground from Hackleburg to Madison County.
The National Weather Service office in Birmingham has also identified 30 tornadoes on April 27. Six of those tornadoes continued into North Alabama and were surveyed by both offices.
The National Weather Service in Raleigh said the storms contained no rotational activity, just heavy winds gusting between 21 and 59 miles per hour.
No serious damage was reported, but at least 1,574 residents in Cumberland County lost power, according to Progress Energy's website.
The dark skies and swaying trees frightened many residents still shaken from the April 16 tornado.
That storm killed one person, wrecked 945 homes and caused more than $100 million in damage in the county.
On the Fayetteville Observer's Facebook page, some residents in neighborhoods heavily damaged by the tornado expressed their fear.
The Fire Service has confirmed there were two tornadoes, and a possible third. They went through the city at about 4:20am.
One hit the city centre, causing substantial damage to businesses. The other hit a hotel and St Mary's Church Hall on Vivian St, a few blocks from the CBD, breaking roof tiles and ripping up a tree.
Canon pastor Bill Marsh said he was thankful the damage was all repairable.
The Fire Service said there may have been another tornado in the nearby town of Bell Block, where there has been more damage to buildings.
Emergency services have been inspecting damage around the city, and say business owners in the affected area should also check their properties.

The impact on air transport of the recent eruption of the Puyehue-Cordon-Caulle volcano range was relatively limited early last week, but by the weekend its effects spread across the southern hemisphere to Australia and New Zealand.
The impact on air transport of the recent eruption of the Puyehue-Cordon-Caulle volcano range was relatively limited early last week, but by the weekend its effects spread across the southern hemisphere to Australia and New Zealand.
Disruption to air traffic in South America caused by the eruption of the Puyehue-Cordon-Caulle range of volcanoes in Chile spread to Australia and New Zealand over the weekend, after shifting winds had initially allowed flight activity to return to normal throughout most of South America within four days of the June 4 eruptions in an area 500 miles south of the capital Santiago.

A view is seen of a cloud of ash from Chile's Puyehue-Cordon Caulle volcano chain near sunset at the mountain resort San Martin de Los Andes in Argentina's Patagonia June 12, 2011.
While flights in some areas have resumed, including Melbourne, planes to and from New Zealand and Adelaide, Australia remain grounded Tuesday.
The volcano in the Puyehue-Cordon Caulle chain in Chile has been erupting for several days, putting South American air travel into chaos as it spews ash high into the atmosphere, spreading eastward around the globe until reaching Australia, New Zealand and beyond in the Pacific.
In addition to Argentina and Chile, flights have been disrupted in the South American countries of Brazil and Uruguay.

A natural-color image released by NASA shows plumes billowing from Nabro volcano in Eritrea on June 13, 2011
Satellite photos show a column of ash rising from the long-dormant Nabro volcano in far southeastern Eritrea, near its border with Ethiopia and the city-state of Djibouti. The eruption is also about 100 kilometers from the coast of Yemen, just across the mouth of the Red Sea.
A photo posted on the website earthobservatory.nasa.gov shows the ash plume spreading westward toward Sudan.
The ash cloud prompted U.S. Secretary of State Hillary Clinton to cut short a visit to Ethiopia, where she addressed the African Union Monday. It has also disrupted commercial aviation. Several major airlines cancelled flights to destinations in the region.






