Much of Manitoba woke up to weather warnings on Wednesday.

Extreme wind chill values are sweeping across the north and through the centre of southern Manitoba, including Winnipeg. In the north, the wind chill values were sitting at about –45 at 7:30 a.m. in the Lynn Lake area.

Those values in the north will continue until late morning, fuelled by northwesterly winds and temperatures of –30 C to –35 C. They are expected to moderate by afternoon as temperatures begin to rise.

Weather map

Areas highlighted in red are under extreme wind chill warnings. (Environment Canada)

Further south, in Winnipeg and the Interlake region, the wind chill was about –42 at 7:30 a.m. The temperatures without the wind chill hovered around –28 C.

The extreme cold in the south is being caused by a ridge of high pressure in Saskatchewan bringing yet another surge of Arctic air into the area.

The wind was also much stronger, gusting to 60 km/h throughout the Red River Valley. It was also blowing around freshly-fallen snow, creating visibility problems in many places.

RCMP were reporting poor driving conditions on the Trans-Canada Highway east of Winnipeg to Highway 12, on Highway 5 between Ste. Rose du Lac and McCreary, and in the Steinbach area because of whiteout conditions.

Visibility improved later in the morning as the winds diminished.

But temperatures are not expected to recover much, if at all, throughout the day. The threat of extreme wind chill will continue for most of the day, despite weakening winds, Environment Canada says.

Temperatures will bottom out near –30 C on Wednesday night before moving up Thursday to about –13 C then even warmer for Friday and Saturday.