Your eyes weren't deceiving you this morning - that really was a flash of lightning during a heavy snowstorm around 10am!
It's called thundersnow, and as you may have guessed, is snowfall accompanied by thunder and lightning.
Our reporter Dave Himelfield saw a flash of lightning on his drive along the M62 this morning — see for yourself in our video at eight seconds in!
Examiner weatherman Paul Stevens said: “It’s quite rare in these parts although we have had it once or twice in recent years in the Pennines, and there are regular instances out in the North Sea.
“It’s exactly like a normal thunderstorm with a heavy cumulonimbus cloud gathering with rain.
“But because it originated over Greenland and Iceland, the air inside was very cold, starting at minus 25 degrees, and it falls as hail or snow."