Frigid overnight wind chill values throughout western Manitoba could make it feel like –40, according to the national weather agency.

A cold, arctic air mass is moving over eastern Saskatchewan and western Manitoba, and with it temperatures on Tuesday night will drop near –30 C and colder, Environment and Climate Change Canada said.

The cold temperatures, combined with northerly winds of 10 to 15 km/h, are expected to produce extreme wind chill values.

The national weather agency says wind chill v…