 Cal Fire Battalion Chief Jesse Torres says the recent heat wave has worsened the dry conditions, so even simple acts like mowing and weed eating could be risky. An East Bay man and a Sonoma County man were arrested over the weekend for accidentally starting a fire with a lawnmower. Torres says people should mow early in the morning and should not park cars in the grass. Be sure that trailer hitches are not dragging on the ground, which can spark, and avoid open flame activities like barbecuing and burn days.