Two-thirds of the country will soon be in the grip of a bitter arctic blast, and it’s expected to last into next week. Parts of central and eastern U.S. are experiencing temperatures near or below freezing Friday. WCBS chief weathercaster Lonnie Quinn joins “CBS This Morning” to look ahead at the forecast. Source

Former Nike Oregon Project runner claims abusive training led to physical injuries and psychological problems Source

A look back at what we’ve been covering on “CBS This Morning.” Source

The search for a missing 5-year-old girl in Florida is intensifying as her mother stopped cooperating with police. An amber alert was issued after Taylor Williams was reported missing Wednesday. Mireya Villarreal reports. Source

Newly released voice messages reveal the heart-wrenching moments after this week’s massacre of nine Americans in Mexico. Two mothers and six of their children were laid to rest Thursday amid heavy security. Now, their loved ones are facing tough questions about whether to stay in Mexico. Manuel Bojorquez reports. Source

The Secret Service says American schools still are not doing enough to identify at-risk students to keep others safe from shootings. The agency unveiled what it calls the most in-depth analysis of school shootings. Jeff Pegues reports. Source

Investigators in Jacksonville said there are inconsistencies in Taylor’s mother’s story and that the girl hasn’t been seen in weeks Source

Civilians commandeer police checkpoints and even government offices, “by order of the people,” amid reports of ongoing violence against protesters Source

On “The Takeout” this week, the South Carolina GOP senator took issue with the House impeachment inquiry Source

Ibraheem Yazeed is charged with first-degree kidnapping in the disappearance of 19-year-old Aniah Blanchard Source