Lala strengthens into a hurricane and bears down on Hawaii's Big Island with heavy rain, winds

Hurricane Lala formed and is heading towards Hawaii's Big Island. Maximum sustained winds reached 75 mph, making it a Category 1 storm. Forecasters warned of life-threatening mudslides and flooding on the mountainous island. Tropical storm force winds are expected to impact other Hawaiian islands by Sunday. Officials urged residents to take the storm seriously and prepare for its arrival.