After a couple of days of relatively comfortable winter weather, the temperature plummeted Monday night and health officials have released warnings about the conditions.
Environment Canada issued an extreme cold weather warning for London, Middlesex, Oxford, Elgin, Perth, Huron, and Brant counties. The alert was lifted Tuesday morning.
The Middlesex-London Health Unit and the Elgin-St. Thomas Health Unit have issued their second cold weather alerts of 2015.
Overexposure to extreme cold weather can result in hypothermia and frostbite. Symptoms include pale skin, shallow breathing , lethargy and confusion.
Parents are asked to ensure children are properly dressed when headed to school. The health unit is also asking people to check on their elderly or disabled neighbours to make sure everyone is coping well with the temperatures.
*with files from Ashton Patis