At Portland International Airport, Thursday morning was essentially routine.
Passengers checked into planes, waited in line at security, and unwinded in coffee shops despite the snow that was piling up on the highways leading into and out of PDX.
Oregon weather
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Icy conditions, more snow in forecast for Portland. Here s what to expect Friday
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Volunteers needed for Portland-area warming shelters
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After snow, Portland braces for freezing rain, now expected to hit Thursday evening
