Colorado mom missing since Thanksgiving

A nationwide search is underway after Kelsey Berreth went missing on Thanksgiving; the mother has no ties to Idaho, where her phone pinged.
1:58 | 12/09/18

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Transcript for Colorado mom missing since Thanksgiving
First, though, the search intensifying this morning for a missing mother from Colorado. She was last seen on Thanksgiving. Her family is worried sick. Hoping somebody has some information on what happened to her. ABC's Lana Zak is joining us with more. Lana, good morning to you. Reporter: Good morning. Authorities in Colorado say they're expanding their alert nationwide after Kelsey Berreth vanished more than two weeks ago. This morning, authorities are widening their search for 29-year-old Kelsey Berreth. Last seen wearing a white shirt, gray sweater. Blue pants. Possibly blue jeans. With a brown purse and white shoes. Reporter: Kelsey, a pilot and a mother to a 1-year-old daughter, was last seen at this safeway grocery store in woodland park, Colorado. But police say her cell phone pinged in Idaho shortly after she went missing. Nearly 70 miles from home. Makes us wonder what she's doing. She may not be there. The phone is. Reporter: Her family in disbelief at her disappearance. I just want her to come home. I just want her to come home. Reporter: Police searched Kelsey's home for clues. Her makeup, suitcases, and cars all untouched. On Facebook, her brother says, after arriving at Kelsey's house and combing through things, we know one thing's certain, Kelsey did not pack to go anywhere. A loving person. She's grounded. She's responsible. She has a 1-year-old child. She wouldn't just leave her. Reporter: Her family holding out hope Kelsey will be found. I find myself calling her quite often. And her phone just goes to voice mail. So -- when you think of someone just -- let them know. Let them know. Reporter: Kelsey's family started a Facebook page in the hopes someone has seen her. As far as they know, she has no ties to Idaho where the phone pinged. They also say to take off unannounced like this would be completely out of character. Thanks, Lana. Turning to weather.

This transcript has been automatically generated and may not be 100% accurate.

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