of other Americans in its grip as well.

Most# of the country shivered through po wer outages and flight cancellations, with# at least six deaths blamed on the weather.

William Brangham has the story.

WILLIAM BRANGHAM: Snow removal# crews are braving bitter arctic## temperatures to clear the way for the# Iowa caucuses tonight.

T Across the country, at least 150 million# people faced windchill or dangerous## cold advisories over the weekend and into# today.

Apart from the east and West Coasts,## every region of the country is dealing with# temperatures below freezing.

In Great Falls,## Montana, the windchill dipped to 40# below zero.

Even fire trucks froze over.

Cory Reeves, the city's mayor, knows how# dangerous these kinds of temperatures can be.

CORY REEVES, Mayor of Great Falls,# Montana: It's bitter, bitter cold.

In fact,## it's deadly if people stay out not dressed appropriately, things to that nature.

WILLIAM BRANGHAM: That risk is# especially high for CORY REEVES: Almost every neighborhood has# elderly people l around here.

And I think it's imperative# that we be good neighbor We just make sure that they have the# supplies they need, that they have heat.

WILLIAM BRANGHAM: In Oregon, high winds, snow# and ice left close to 100,000 customers without## power in the Portland metro area.

Lake-effect# snow brought whiteout conditions to Buffalo,## New York, this weekend.

The# NFL playoff game between the## Bills and the Pittsburgh Steelers was# postponed from Sunday to this afte And with Highmark Stadium still# under more than two feet of snow,## the Bills hired fans to help shovel out# the stands.

And some even got a free ride.

MAN: We're going all the way this time!

WILLIAM BRANGHAM: Further south, the intensity# of this blas like Tennessee and Arkansas are facing# snowy roads and freezing temperatures.

The frigid air stretched down into Texas,# initially prompting fears of a repeat of 2021,## when millions lost power and hundreds died.# While Texas' grid seemed to be holding up so far,## windchills aren't expected to let up anytime soon.

For the "PBS NewsHour," I'm William Brangham.