Caran Johnson's string of posts started within minutes of the accident on Interstate 205 near Vancouver, British Colombia.
Later her tweets turned highly personal and incredibly painful. Select tweets:
Later that evening, after her children had fallen asleep, Caran wrote: "I feel like a block of cement fell on me."
"Tomorrow I'll have family over," she added. "Tomorrow will be hard. I'll hear from the medical examiner."
Caran continued to tweet after her husband's death, at one point writing: "I know it's petty, but I went from 567 followers to over 1,300. #inshock."
Caran’s husband was killed after his vehicle crossed the central reservation and hit a pick-up truck heading in the opposite direction.
Police have yet to confirm what caused the crash, and an online fund has been set up for Caran and her family.
