like, just, boom. reporter: two boys were also struck by lightning while swimming in a creek in philadelphia. one of those boys was killed. it s the 21st known lightning fatality so far this year in what experts say is an unusual pattern. caroline costello, abc news, new york. we can expect powerful thunderstorms again today from the ohio valley into the northeast. as tropical storm dolly is forming south of texas. our coverage continues with accuweather s jim dickey. good morning, jim. good morning, reena and tahman. we are tracking a cold front that s brought severe weather across the plains and midwest the past two days. heavy thunderstorms now spreading into the ohio valley and northeast. not quite the severe weather threat but a few storms will be heavy, packing gusty winds, pack large hail. upstate new york down into the ohio valley here. and flooding a major concern as well. meanwhile we re tracking the latest tropical depression, moving off to the west. you see it spinn
like, just, boom. reporter: two boys were also struck by lightning while swimming in a creek in philadelphia. one of those boys was killed. it s the 21st known lightning fatality so far this year in what experts say is an unusual pattern. caroline costello, abc news, new york. we can expect powerful thunderstorms again today from the ohio valley into the northeast. as tropical storm dolly is forming south of texas. our coverage continues with accuweather s jim dickey. good morning, jim. good morning, reena and tahman. we are tracking a cold front that s brought severe weather across the plains and midwest the past two days. heavy thunderstorms now spreading into the ohio valley and northeast. not quite the severe weather threat but a few storms will be heavy, packing gusty winds, packing hail up to new york down into the ohio valley here and flooding, a major concern as well. meanwhile we re tracking the latest tropical depression, moving off to the west. you see it spinning up