DC prepares for excessive heat that could reach 100 degrees

Summer began Thursday, and Washington, D.C., is preparing for a sizzling first weekend of the season, with temperatures expected to reach as high as 100 degrees.

The National Weather Service issued a heat advisory for Washington, D.C., and surrounding parts of Maryland and Virginia, for much of Saturday. Temperatures are currently forecast to be in the high 90s and low 100s, with the heat index over 105 degrees.

The temperatures Saturday into Sunday are expected to be a crescendo of a heat wave currently affecting the greater Washington, D.C., area...