A wind chill warning is blanketing Manitoba's Red River Valley, making it feel like –40.

The warning, issued by Environment Canada on Tuesday, covers an area that stretches from Brandon in the west to Beausejour in the east, and from Gypsumville in the Interlake Region to the United States border.

At that extreme wind chill, frostbite on exposed skin can occur in less than 10 minutes.

The temperature, without the wind chill, was about –27 C to –30 C across the region as of 8 a.m.

The wind chill values should moderate by mid to late morning as temperatures climb and winds slowly diminish, according to Environment Canada.