 The powerful Category 4 has killed at least six people, and it could bring life-threatening winds and storm surge to Jamaica. Rolling blackouts in parts of Northern California. As has become common in wildfire-prone areas, when it's hot, dry, and windy, Pacific Gas and Electric preventatively cuts off the electricity. The goal being to prevent wildfires if power lines come down in the wind, but it leaves thousands of people with no air conditioning or refrigerators safe.