 Jordan Evans with the 7 News First Alert forecast. Tracking a very hot forecast, the heat advisory continues until 8 o'clock for the D.C. area, as the heat index could climb up to 108 during the afternoon. Air temperatures close to 100 degrees as well. Can't rule out a shower storm this afternoon or this evening. There may be a better chance closer to midnight. Not expecting any severe weather, but some heavy rain or lightning is possible with any of those strongest storms.