Environment and Climate Change Canada says the rating for a powerful Manitoba tornado that killed two people when it threw their vehicle into a field has been upgraded.
The agency says in a statement that the storm damage survey, along with additional information received after the twister near Virden on Aug. 7, indicates the tornado was an EF-3 on the five-level Enhanced Fujita Scale, and had estimated wind speeds of 260 km/h.
Preliminary findings released not long after the event had indicated an EF-2, and that wind speeds only reached 190 km/h.
Shayna Barnesky and Carter Tilbury, both 18 and from Melita, Man., died after police said it appeared they were ejected from their vehicle when the storm hit.
A 54-year-old man from Sioux Valley Dakota First Nation suffered serious injuries when his vehicle was also thrown.
The tornado also caused extensive damage on a farm, with silos strewn throughout a field.
The storm survey was compiled by the Northern Tornadoes Project, in association with the University of Manitoba and Environment and Climate Change Canada.