Extreme cold warnings are in effect for several parts of the Parkland, including Yorkton,. Melville, Foam Lake, Dauphin, Neepawa and Russell. An Arctic ridge of high pressure building over the Prairies has ushered in a cold airmass, with windchills at or near minus 40. Wind chill values will moderate slightly during the day, but similar wind chills are likely again tonight into tomorrow morning.