 The group's attorneys argue the state's highest court did allow referendums to limit tax rates in a 1990 decision. The group has gone to Baltimore City Circuit Court to force the issue back on the ballot. Robert Lang, WBAL Newsradio 1090 and FM 101.5. The heat index today expected to hit 110 degrees. Baltimore City is opening seven recreation centers as cooling centers for today only. That's in addition to the 14 cooling centers that will be open through Wednesday.