 Now the 7 News First Alert forecast from Steve Rudin. Hot and humid moving through the afternoon. Excessive heat warning until 8 o'clock for the metro area in southern Maryland. Elsewhere, heat advisory also until 8 p.m. Tracking a robust weathermaker that could bring strong to severe thunderstorms late afternoon through early evening. Some storms may contain gusty winds and heavy downpours. Once we get through all of that, we're looking at quieter conditions moving into the day on Thursday.