Severe weather July 3, 2024 5:57 pm How do lightning warning systems work? NBC6’s Marissa Bagg takes a closer look at lightning warning systems in the wake of the death of a 19-year-old runner who was struck and killed by lightning. US & World Videos 2:18 Man found guilty of murdering woman who vanished in South Florida in 2007 2:31 Man convicted of murdering woman who went missing in South Florida 3:24 Business owners weigh in on public sleeping ban 2:26 South Florida volunteers gear up to send aid to Helene victims 2:51 Hurricane Helene devastates coastal town Keaton Beach