First Alert Forecast September 17, 2024 4:46 pm First Alert Forecast: Cool Wednesday Temperatures remain cool for the next few days before warming up this weekend. Meteorologist David Biggar has the evening forecast for Tuesday, September 17, 2024. US & World Videos 1:18 First Alert Forecast: Red flag warning winds down 2:37 First Alert Forecast: Strong winds and red flag weather 3:54 First Alert Forecast: Strong Santa Ana Winds 3:20 First Alert Forecast: Santa Ana winds 3:09 First Alert Forecast: Chance of rain