Why is there a multicoloured halo around the sun today?

Derek Girard/TWITTER

You may have noticed a strange rainbow-coloured halo around the sun today.

The phenomenon is created when light interacts with ice crystals in the atmosphere. The refracting effect will cause a halo around the sun — and it can also happen around the moon at times.

Environment Canada's senior climatologist Dave Phillips says those kinds of halos around the sun or moon are common in this part of the continent, happening roughly 20 to 30 times a year.

And it often means some nasty weather is on the way — usually within 24 to 36 hours.

"Our ancestors used to use that as a way of forecasting the weather," he says. "There's a bit of a weather lore that goes like this, 'when there's a halo around the sun or moon, brings rain upon you real soon.'"

The forecast for Friday calls for showers and thunderstorms in the late morning and early afternoon, followed by clearing.

"With all the satellites and radar and supercomputers...you can observe your surroundings, and it'll tell you what the weather is going to be the next day," Phillips adds.

Leave a comment:

showing all comments · Subscribe to comments
  1. vic posted on 05/29/2014 04:20 PM
    It is actually called "Lordius Stanlia Cupium" effect and is a portent of the coming victories that the Habs will have in the near future :)
showing all comments

Share this article:

News Videos

Latest News

  • Jacques Parizeau criticizes PQ; calls party 'directionless'

    Former premier Jacques Parizeau is once again criticizing his old party, the Parti Québecois, saying the party is directionless, has been for some time, and needs to re-organize. Read More
  • Water thieves in Rigaud

    In the community of Rigaud, west of Montreal, residents are being asked to watch for tanker trucks pulling up to fire hydrants to steal water. The thieves struck half a dozen times over the summer. Read More