Lightning flashes during a thunderstorm over Monterrey, Mexico
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Lightning from a thunderstorm strikes on Thursday amid the wreckage of twisted cars and structures at Plaza Elementary School, where seven children were killed when a tornado hit Moore, Oklahoma. The tornado tore through the town on Monday, flattening neighbourhoods and destroying the elementary school with a direct blow as children and teachers huddled against winds of up to 200 mph.
Lightning flashes in the sky on Thursday in Zhuhai, China. Two people in the province of Guangdong, where Zhuhai is situated, have been killed since Saturday and heavy rainfall has left water levels waist high.