First Alert Forecast August 7, 2023 4:37 pm First Alert Forecast: Tropical Moisture Tropical moisture will arrive late Tuesday, and we may have a chance of rain by Wednesday. Meteorologist David Biggar has the evening forecast for Monday, August 7, 2023. US & World Videos 3:46 First Alert Forecast: Nice Weekend, Gusty Next Week 3:23 First Alert Forecast: Cooler weekend 2:43 First Alert Forecast: Cloudy & Cooler Friday 3:18 First Alert Forecast: Hottest day of the week 3:47 First Alert Forecast: Thursday Warming