Something I read earlier, which if that part holds true and continues...if it remains a “fast” storm...it should cause less damage and injuries....otoh, someone else said warmer weather up ahead will create instability...
IMHO : The fast movers tend to be thinner,,,gone quickly...
around here anyway...
With some exceptions (The Oklahoma City F5, the Jarrell F5) most really destructive tornadoes are moving quite fast. They end up covering more area with a longer track.
The deadliest Tornado in history, the Tri-State Tornado, was one of the fastest moving tornadoes ever recorded - 70 mph+