 However, by the evening of the same day, the powerful Santa Ana winds had caused the Thomas Fire to undergo another period of explosive growth, expanding to in size, with containment dropping to 10% overall, indicating no new progress in fire containment.Another firefighter was injured, when he fractured his leg, and he returned home to recover.On the same day, fire analysts stated that the Thomas Fire had been generating its own weather for the past two days, a behavior only observed in very massive wildfires and indicative of a firestorm.