 And we're looking at an uncomfortably hot and humid day with the potential for some severe weather later this afternoon. 7 News First Alert Meteorologist Jordan Evans. Heat and humidity will help fuel thunderstorm chances for today. Temperatures into the 90s and the heat index above 100 degrees. Then anytime after 3 o'clock, the thunderstorm chances may be strong to severe as a cold front approaches and that line starts to our north and west, moves through the Beltway and eventually pushes into eastern Maryland by later this evening.