Governor Glenn Youngkin is urging Virginians to be prepared as the remnants of Tropical Storm Debby move north.Preview: Investigators say lightning caused a weekend house fire in Loudoun County. The Saturday fire in Hillsboro disrupted a family gathering, forcing the evacuation of more than two dozen people. A lack of hydrants in the area delayed the response to the fire, leading to more than 800-thousand dollars in estimated damage. No injuries were reported.