Before and after photos reveal Ottawa-area tornado's ruinous power

The twin tornadoes that struck Ottawa and Gatineau, Que., on Friday left trails of destruction.

• Tornado an 'emotional roller-coaster' for Ottawa-area residents

Environment Canada said the tornado that laid waste to Ottawa'sDunrobincommunity and Gatineau'sMont-Bleuneighbourhood was likely anEF-3 with wind speeds of up to 265km/h.

The second tornado, which hit Ottawa's Arlington Woods neighbourhood with devastating force,was classified as anEF-2 and packedwind speeds of up to 220 km/h.

These photos, taken before and after the Dunrobin-Mont-Bleutornado, are stark examples of its devastating power.