he emulates the pitching style o former major leaguer jim abbott. >> abbott only had one hand. he threw before sliding his glove on to his left hand. he received a care package from the giants. >> that is sweet. >>> world news tonight with david muir is next. >> for spencer christian, michael finney >>> tonight, breaking news as we come on the air. the new hurricane threat. a state of emergency already declared in florida tonight. hurricane irma now just upgraded to a category 4. several states could be hit. 130-mile-per-hour winds already. ginger zee standing by with the new track just in. >>> also developing tonight, north korea's most powerful nuclear test yet. more powerful than either bomb dropped by the u.s. in world war ii. and this evening, the u.s. ambassador to the u.n. saying north korea is, quote, begging for war. >>> hurricane harvey. the newest evacuations. water released from reservoirs, leaving homes underwater. what now for the 85% of residents with no flood insurance? >>> the images coming in at this hour.