The arctic blast that is bringing ice to parts of the lower Midwest and rust belt is bringing dangerously cold temperatures to the upper Midwest.

Oil workers in North Dakota reported temperatures in the single digits as they worked Wednesday with forecasts for Thursday and Friday showing highs from -6 to -10. Overnight lows reaching -25 are also predicted.

The cold is so severe that the Red Cross is telling residents of areas impacted by the cold to stay inside or to layer up should they be forced to leave the house. A Red Cross spokesman also asked for neighbors to watch out for elderly residents in their communities and those who might need special assistance, especially if they live alone.

The weather across Montana, North Dakota and Minnesota dumped up to three feet of snow in some locations and contributed to at least 11 deaths.