A devastating storm system moved across the United States on Friday, spawning a slew of tornadoes that contributed to at least 28 fatalities in Indiana, Kentucky and Ohio. National Weather Service meteorologist John Gordon reported Friday afternoon the agency had about "half a dozen reports of tornadoes on the ground," as well as reports of "significant damage" -- making his comments before some of the worst twisters were reported. "This is an enormous outbreak that's going on right now across Kentucky and the South," Gordon was quoted as saying by CNN. These tornadoes follow an earlier outbreak that began Tuesday night and left 13 dead across Kansas, Missouri, Illinois and Tennessee and battered parts of Kentucky.