The heat wave caused disruptions to public transport across the Northeast. Amtrak said it will be forced to slow train speeds between 12 p.m. and 8 p.m. on June 24 between Washington, D.C., and New York, and between Philadelphia and Harrisburg, which could lead to delays.

Philadelphia is aiming for a high of 100 today, which would mark the first time since July 7, 2012. Heat index values could reach as high as 110 by late afternoon. Along the immediate coast it'll be a bit cooler but even inland sections of shore towns may reach over 100 on the heat index.