An approaching cold front will begin to cloud things up this afternoon, setting off some showers and thunderstorms - and a chance of some severe ones - as afternoon turns to evening. The storms will start to our west, over the mountains, then move our way by evening. The best chance for severe weather here looks like late this evening into early tomorrow.

They're calling for a high of 91 today. (Yesterday's max at BWI was 94 degrees. We clocked 92 here at Calvert & Centre.)  Baltimore has posted a Code Red Heat Alert again and opened its cooling shelters. But once the front pulls through this evening, temperatures will ease. The next few days look sunny and seasonable, with highs in the 80s again and lower humidities. Gotta love these cold fronts. There's another due over the weekend.

Don't look for a lot of widespread, beneficial rain from all this. While a lucky few in the path of some storms may get a good dose of rain, it's like to run off quickly. And the rest of us should expect less than a tenth of an inch, the NWS says.