. >> it is just apock lip particular-- apocolyptic. >> reporter: they strike each summer and each time the losses are no less painful >>> the u.s. state of alabam a have declared an emergency after torn a doughs and-- torn doughs-- tornadoes have been hit. it has been a week of extreme weather in the south. people have been killed across tennessee, arkensaw and mississipi. one hundred thousand people have been left homeless from floods. parts of brazil, argentina are also suffering. >> reporter: severe flooding in the southern part of south america driving more than 150,000 people from their homes and spending christmas looking for higher ground. in the city of concordia, north-east argentina, it has been called the worst flooding in half a century as nonstop overnight rains forced the river to flood its banks. thousands forced to evacuate. >> translation: the water level was high inside high house. i found as much as 20 or 30 centimetres. >> reporter: the nearby dam was nearing capacity as it tried to contain more flood waters. >> translation: the priority is to get control of the sit

scientists say they have been confronted by apocolyptic scenes along the coast where 337 dead whales have washed ashore. they were found beached in a hard to reach area of the south of the country tree. the national fishing service is investigating this. they don't believe that humans are behind the deaths. this is thought to be the largest incident of its kind ever recorded. it's pretty awful stuff there. as a reminder, you can keep up-to-date with the news on al jazeera.c jazeera.com. >>> could it be the next trigger f