An extreme cold weather alert has been issued for Toronto, following a winter storm that buried the city in snow Tuesday night and early Wednesday morning.

The temperature is expected to drop to a low of –14 C Wednesday night.

Toronto's Medical Officer of Health, Dr. David McKeown, issued the alert Wednesday morning, and says it will stay in effect until further notice. 

Residents are encouraged to dress in warm layers and to call or visit friends, neighbours and family who might be having trouble with the cold weather. Infants and young children, the homeless, people who work outdoors and those with heart or respiratory illnesses are among those at risk, officials say. 

During such alerts an extra effort is made to help homeless people to get off the street and into shelters. The alert also triggers the opening of two 24-hour extreme cold weather drop-ins. They will be open by 3 p.m. Wednesday.