While longtime San Diego residents are likely familiar with the term, some may be new to the advisory. So, what exactly does a Red Flag Warning mean and why is it important?

SDG&E had cut power to more than 50,000 customers to reduce the risk of wildfire in San Diego County during the December Red Flag Warning.

Meanwhile, a "particularly dangerous situation" red flag warning is also in place from 10 p.m. Monday through 2 p.m. Tuesday in those same areas due to Santa Ana winds, low humidity and extremely dry vegetation.