Tijuana River Valley October 15, 2018 5:12 pm First Rain in 10 Months Causes Problems in South Bay After nearly ten months of no heavy rain, a new downpour has washed built-up toxins through the Tijuana River Valley. NBC 7’s Joe Little has more. US & World Videos 2:45 La Jolla Concours d'Elegance classic race cars 1:39 Troops Endure Hyper-Realistic Training 2:07 New study links consuming red meat with dementia 2:05 Police find, return dozens of abandoned Amazon packages 0:28 A Vermont state trooper plunges into icy pond to rescue 8-year-old girl