 The WTOP Traffic Center is presented by Window Nation. Buy two windows, get two free. Visit windownation.com. I'm Rita Kessler, WTOP Traffic. And your forecast now from 7 News First Alert meteorologist Brian Vandegraaff. Dangerous heat, that's the story for today. Excessive heat warnings in effect. We've had these several times already this year and we're doing it again this afternoon. Why? Because it could feel as hot as 110 degrees.