- published: 01 Jun 2013
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05/31/2013 - Oklahoma Tornado - New twisters kill 5 in tornado-traumatized Oklahoma http://youtu.be/znBrTkzVZcs tornadoes, Oklahoma, Missouri, Bridgeton, what are tornadoes, what is a tornado, tornado facts, tornado pictures, tornadoes videos, a tornado, what causes tornadoes, hurricanes and tornadoes, tornado warning, tornado movie, tornado warnings, tornadoe, how tornadoes form, tornadoes in Oklahoma tornado, Oklahoma tornado, tornado warnings, tornado, Moore, Oklahoma, Bridgeton, the natural disasters, natural disasters, what is a natural disaster, what are natural disasters, current natural disasters, natural disaster, Union City Oklahoma Union City, Oklahoma (CNN) -- The full scale of the destruction wrought by five new tornadoes that plowed through the Oklahoma City area became apparent in the light of day Saturday. Friday evening's twisters killed at least five people and injured scores more, less than two weeks after a monstrous tornado made rubble of the town of Moore, a suburb of Oklahoma City. "There's just no rest," said city spokeswoman Kristy Yager. In all, 17 tornadoes were reported in the Midwest. The number was expected to change when officials conduct storm surveys, said Kurt Van Speybroeck, a meteorologist with the National Weather Service. By Saturday, more than 210,000 customers were without power in the Midwest -- 89,000 in Missouri, 86,000 in Oklahoma, 31,000 in Illinois, 3,000 in Arkansas, 1,000 in Kansas and 500 in Indiana. While the twisters damaged houses in Missouri and Illinois, the brunt of their force was reserved for Oklahoma City and its surrounding areas, including El Reno and Union City. Among the dead were a mother and her child, officials said. At least 71 others were injured. The storm system swatted down power lines and uprooted trees, flicked big rigs on their sides and yanked off part of the terminal roof at Oklahoma City's Will Rogers World Airport. All Saturday morning departures were canceled for the airport, where some 1,500 area residents had taken shelter Friday night in a tunnel, airport spokeswoman Karen Carney told CNN. "We're just grateful we were able to get everybody down there," she said. The airport was not hit, but 80 mph winds swept through the area. One twister tore open Kris Meritt's parents' brick house like a carton, sucking out its contents and tossing most of them onto the lawn. It spared the walls and part of the roof, then moved on to raze the house next door. The parents returned to survey the damage, but rushed off when another tornado was headed their way. "It's a sombering thing to think about life, and to see all your memories just tossed about," Merritt said. "Everything from your childhood on up." A tornado is a violently rotating column of air that is in contact with both the surface of the earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud. They are often referred to as twisters or cyclones, although the word cyclone is used in meteorology, in a wider sense, to name any closed low pressure circulation. Five tornadoes plow through Oklahoma City area, Portions of more than 200 roads in Missouri are shut by flooding, state DOT says Central Oklahoma "right in the sweet spot" for storms Family in iconic photo from May 20 disaster re-traumatized A mother and child were killed in the Oklahoma storms, an official says At least 71 others were injured in Oklahoma
![The Fukushima Daiichi nuclear disaster (Fukushima Dai-ichi ( pronunciation) genshiryoku hatsudensho jiko?) was a series of equipment failures, nuclear meltdowns, and releases of radioactive materials at the Fukushima I Nuclear Power Plant, following the Tōhoku earthquake and tsunami on 11 March 2011.[5][6] It is the largest nuclear disaster since the Chernobyl disaster of 1986, and only the second disaster (along with Chernobyl) to measure Level 7 on the International Nuclear Event Scale.[7]
The plant comprises six separate boiling water reactors originally designed by General Electric (GE), and maintained by the Tokyo Electric Power Company (TEPCO). At the time of the quake, Reactor 4 had been de-fueled while 5 and 6 were in cold shutdown for planned maintenance.[8] Immediately after the earthquake, the remaining reactors 1-3 shut down automatically, and emergency generators came online to power electronics and coolant systems. However the tsunami following the earthquake quickly flooded the low-lying rooms in which the emergency generators were housed. The flooded generators failed, cutting power to the critical pumps that must continuously circulate coolant water through a nuclear reactor for several days in order to keep it from melting down after being shut down. As the pumps stopped, the reactors overheated due to the normal high radioactive decay heat produced in the first few days after nuclear reactor shutdown (smaller amounts of this heat normally continue to be released for years, but are not enough to cause fuel melting).
At this point, only prompt flooding of the reactors with seawater could have cooled the reactors quickly enough to prevent meltdown. Salt water flooding was delayed because it would ruin the costly reactors permanently. Flooding with seawater was finally commenced only after the government ordered that seawater be used, and at this point it was already too late to prevent meltdown.[9]
As the water boiled away in the reactors and the water levels in the fuel rod pools dropped, the reactor fuel rods began to overheat severely, and to melt down. In the hours and days that followed, Reactors 1, 2 and 3 experienced full meltdown.[10][11]
In the intense heat and pressure of the melting reactors, a reaction between the nuclear fuel metal cladding and the remaining water surrounding them produced explosive hydrogen gas. As workers struggled to cool and shut down the reactors, several hydrogen-air chemical explosions occurred.[12][13]
Concerns about the repeated small explosions, the atmospheric venting of radioactive gasses, and the possibility of larger explosions led to a 20 km (12 mi)-radius evacuation around the plant. During the early days of the accident workers were temporarily evacuated at various times for radiation safety reasons. At the same time, sea water that had been exposed to the melting rods was returned to the sea[citation needed] heated and radioactive in large volumes[citation needed] for several months until recirculating units could be put in place to repeatedly cool and re-use a limited quantity of water for cooling. The earthquake damage and flooding in the wake of the tsunami hindered external assistance. Electrical power was slowly restored for some of the reactors, allowing for automated cooling.[14]
Japanese officials initially assessed the accident as Level 4 on the International Nuclear Event Scale (INES) despite the views of other international agencies that it should be higher. The level was later raised to 5 and eventually to 7, the maximum scale value.[15][16] The Japanese government and TEPCO have been criticized in the foreign press for poor communication with the public and improvised cleanup efforts.[17][18][19] On 20 March, the Chief Cabinet Secretary Yukio Edano announced that the plant would be decommissioned once the crisis was over.
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