Answer:
At 12 Z (7 am EST) on 13 March 1993, observations of the surface analysis map indicate a cold air mass lying to the west and northwest of the surface low (well behind the cold front).
Step-by-step explanation:
On that day, the storm known as "storm of the century" occurred, where a hot front caused the creation of several tornadoes and a cyclone originating in the Gulf of Mexico, with high-speed winds that extended as far as Florida.