 National Weather Service issues multiple tornado warnings as wind gusts of over 70 miles an hour moved towards Chicago last night. More at townhall.com. WCVM Baltimore. Another day of tough heat and humidity for Baltimore on Tuesday with another day of excessive heat warnings for the mid-Atlantic and all of the state. Our overnight low of steamy 80 degrees. We'll fire up some isolated storms again Tuesday afternoon with highs near 101. Dangerous heat and humidity.