A strike of lightning that stretched across three American states has been identified as the longest ever recorded. The United Nations weather agency announced the finding on Tuesday. The lightning strike, or bolt, was recorded on April 29, 2020, the World Meteorological Organization, WMO, said. It covered an area of 768 kilometers across the states of Texas, Louisiana and Mississippi. The old record, set in 2018, was a lightning strike in Brazil that covered 709 kilometers.