Fire in the sky: 'Apocalypse' thunderstorm rolls into Yellowknife

Smoke followed by thunderclouds brought nightfall early to Yellowknife Wednesday. People took to social media to post photos of the skies described as everything from "eerie" to "the apocalypse."

Storm clouds mixed with wildfire smoke, producing optical illusions like 'red' lightning

A thunderstorm that hit Yellowknife, N.W.T., on Wednesday night mixed with thick clouds of smoke from nearby wildfires, rendering the sky shades of orange and yellow, and making some lightning strikes appear almost red in colour.