First Alert Forecast April 19, 2023 6:38 pm First Alert Forecast: Warming Up Temperatures will warm up rapidly over the next few days. Meteorologist David Biggar has the evening forecast for Wednesday, April 19, 2023. US & World Videos 2:34 First Alert Forecast: Cooler temperatures 3:10 First Alert Forecast: Cooling trend 3:22 First Alert Forecast: Cooler Temps Ahead 3:22 First Alert Forecast: Air Quality 3:14 First Alert Forecast: Red Flag Warning