Thunderstorms that developed over San Diego County early Monday delivered lightning strikes that may have contributed to several brief power outages and small fires. Between 2 a.m. and 4 a.m., 15 cloud-to-ground lightning strikes were recorded in San Diego County and its coastal waters, according to the National Weather Service. A few small fires broke out around the same time, including in Valencia Park, Logan Heights and Chula Vista, although it was not immediately confirmed that lightning strikes were the cause. A fire weather watch for areas other than the deserts is in effect through this evening.