First Alert Forecast December 17, 2020 5:48 am First Alert Forecast: Big Changes Ahead Today marks a downturn in temperatures. Belen De Leon has the forecast for Thursday Dec. 17, 2020. US & World Videos 2:59 First Alert Forecast: Windy Friday with possible showers 3:46 First Alert Forecast: Windy Friday 2:51 First Alert Forecast: Cooler weather lingers before weekend warm-up 3:49 First Alert Forecast: Cloudy & Drizzly Thursday 3:03 First Alert Forecast: Sweater weather