First Alert Forecast July 4, 2024 4:37 pm First Alert Forecast: Hot Friday Dangerous heat is expected for Friday. Meteorologist David Biggar has the evening forecast for Thursday, July 4, 2024. US & World Videos 2:37 First Alert Forecast: Temperatures in the 90s 3:47 First Alert Forecast: Slightly Cooler Friday 3:10 First Alert Forecast: Red flag warning in effect 3:43 First Alert Forecast: Slight Cooling 3:17 First Alert Forecast: Heat continues