Here we present WRF-based case studies of two North Atlantic hurricanes from September 2011 that underwent ET and subsequently impacted Western Europe. Hurricane Katia (2011) moved into the midlatitude regime, interacted with an upstream trough, and developed into a significant extratropical cyclone that propagated east across the Atlantic and impacted the British Isles causing 1 death and $157 million USD in damages. A week later, Hurricane Maria was absorbed by the baroclinic regime over the Canadian maritimes during ET. However, the upper-level flow downstream of Maria became quite perturbed generating a midlatitude cyclone that impacted Europe approximately 3-4 days later. In this presentation we will discuss the physical characteristics of each case and diagnose the physical processes that resulted in such different midlatitude evolutions and outcomes.