we ll explain how that could happen. with the immediate threat of yosemite national park. the one of 50 fours. it is the 16th largest four in california state history. an army of fir foirt firefighters fighting it. governor jerry brown issued a emergency declaration for san francisco. the flaps are a hazard for the utility. and reno, nevada. that smoke is a killer. smoke warnings led to event cancellations. andom nick is live for us in california tonight. san francisco facing power and water out ages? that is right. it sounds astonishing