Is it tornado season already? Two twisters hit Dallas, Texas, on Tuesday, with the National Weather Service reporting “considerable damage” in towns south of the Ft. Worth area, including Arlington. Live television footage showed a funnel cloud approaching a major highway south of Dallas and moving north. More twisters are brewing as a severe storm system sweeps the region, with the weather service reporting heavy thunder, lightning, and large hail. Local news says mobile homes and trucks have been spotted airborne and several schools have been evacuated, though no injuries or fatalities have been reported. A tornado watch is in effect for most counties in north Texas.