First Alert Forecast 9 hours ago First Alert Forecast: Dangerous Heat for Wednesday Dangerous heat is back for Wednesday. Meteorologist David Biggar has the evening forecast for Tuesday, October 1, 2024. US & World Videos 3:35 First Alert Forecast: Heat Returns 2:55 First Alert Forecast: High temperatures on the way 3:48 First Alert Forecast: Beautiful Weekend 3:45 First Alert Forecast: Coastal Fog 3:29 First Alert Forecast: Cooler Than Average Temperatures