Mayor Muriel Bowser has put the wheels in motion for an Extended Heat Emergency in D.C. from Monday, June 17 through Friday, June 21. A collaboration between the Department of Human Services (DHS) and the Homeland Security and Emergency Management Agency (HSEMA), the initiative kicks in when temperatures are forecast to hit 95 degrees Fahrenheit or above for at least four days. according to official statements, residents can find respite from the blistering heat at several cooling centers set up throughout the district.