It's Friday, April 17th. I’m Mike Scott and today’s forecast is mostly cloudy and cool, with a high of 65 and a low tonight of 59. Now the news: Yesterday, San Diego County health officials released a new datapoint, featuring the doubling rate, that may help show how fast or how slow COVID-19 is spreading. The doubling rate is the number of days it takes any particular metric — like cases, hospitalizations or deaths — to double.