suspect wanted for at least four murders. first tonight, the images coming in at this hour. tropical storm alberto. the watches and warnings up right now. communities already under water tonight. up to ten inches of rain possible. also tonight, this dangerous record-breaking heat. where it gets worse by late week. and now, this chance for severe weather in the northeast. ginger stooe standing by to track it all. also tonight, the massive house explosion in syracuse. eight children among the victims, rushed to the hospital. and tonight, what firefighters have now discovered. the urgent manhunt at this hour across multiple states for a suspect wanted for at least four homicides. the latest case, a man and a woman found dead at a business, a vehicle stolen. overseas tonight, vladimir putin and kim jong-un and their new pact. and closer to home tonight, off the u.s. coast, about 100 miles from florida, the u.s. navy tracking a russian submarine. martha raddatz with late r