Conditions no longer pleasant for outdoor activities on sunny days. Outdoor work and travel are safe with quality winter clothing. 1600 to 1800 Freezing of exposed skin begins for most people depending on the degree of activity and amount of sunshine. Heavy outer clothing is essential. Environment Canada will add the current windchill to public forecasts at this level.
Frostbite can occur in a few minutes.
Multiple layers of clothing become essential. May feel like -30 C. 2000 Unprotected skin can freeze in one minute. Adequate fact protection becomes important. Elementary school children require continuous adult supervision while outdoors. Work and travel alone is not advisable.