Summary

A period of very cold wind chills is expected. Bitterly cold Arctic air remains in place over Northern Ontario. Extreme wind chills of near minus 40 are likely tonight and Thursday morning. After some improvement Thursday afternoon, wind chills of near minus 40 are likely again Thursday night and into Friday morning.

Wear appropriate clothing. – Always wear clothing appropriate for the weather. Synthetic and wool fabrics provide better insulation. Some synthetic fabrics are designed to keep perspiration away from your body which keep you dry and further reduce your risk. – Dress in layers with a wind resistant outer layer. You can remove layers if you get too warm (before you start sweating) or add a layer if you get cold. – Wear warm socks, gloves, a hat and scarf in cold weather. Be sure to cover your nose to protect it. – If you get wet, change into dry clothing as soon as possible. You lose heat faster when you’re wet. Know your health risks. – Talk to your health professional to see if you are at an increased risk from increase cold due to medical condition. – If you have health problems such as a heart condition, you may wish to avoid strenuous activities like shoveling snow. Extreme cold warnings are issued when very cold temperatures or wind chill creates an elevated risk to health such as frost bite and hypothermia. Environment Canada meteorologists will update alerts as required, so stay tuned to your local media or Weatheradio. Email reports of severe weather to storm.ontario@ec.gc.ca or tweet with the hashtag #ONStorm.