Watch Megyn Kelly's emotional Fox News farewell: 'This was a tough decision' (Video)

To close out her first show after announcing that she is departing Fox News for NBC News, Megyn Kelly had a very special message for her millions of viewers.

"Finally tonight, a personal and professional note, from me to you. After more than a dozen years, at Fox News, I have decided to pursue a new challenge," the "Kelly Files" host said Tuesday night. "This was a tough decision for me because I love this show, our staff, my crew, my colleagues here at Fox — and you, all of you," she told viewers.

"Those who write me the lovely hand-written notes asking about my kids, and even those who very rarely complain on Twitter about our coverage after a show or a presidential debate," Kelly quipped referring to her run-ins with Donald Trump.

See photos of Megyn Kelly through the years:

Also Read:Megyn Kelly to Ditch Fox News for NBC News

The network veteran shared the news of her impending career move in a Facebook post earlier Tuesday, revealing that she will leave Fox News at the end of the week in favor of NBC News.

Referencing the importance of the human connection, "the truth is I need more of that in my life," she explained. "In particular when it comes to my children, who are seven, five and three."

"So I'll be leaving Fox News at the week's end and starting a new adventure, joining the journalists at NBC News, who I deeply admire," Kelly, 46, said, detailing how she will anchor a daytime show and a Sunday night news magazine.

Also Read:Why Fox News Will Be Just Fine Without Megyn Kelly

"I am very grateful for NBC for this opportunity — and I am deeply thankful to Fox News — for the wonderful 12 years I've had here. I've grown up here and been given every chance a young reporter could have ever asked for. The Murdoch family has been kind and good to me at every turn," she continued.

"I will miss them, and this show and you — and hope our human connection continues."

NBCUniversal News Group chairman Andrew Lack announced earlier Tuesday that Kelly would join NBC News later this year. Details about both of Kelly's news programs will be unveiled in the coming months, according to NBC.

Kelly has been a Fox News star for several years, but emerged as a household name when she feuded with President-elect Donald Trump during the 2015-16 GOP primary. It was a one-sided dispute, as Trump attacked Kelly on Twitter because he did not like a question she asked regarding his treatment of women during a Republican primary debate on Fox News. Kelly did not publicly fight back, but former Fox News boss Roger Ailes defended her throughout the ordeal.

Also Read:Megyn Kelly's 9 Biggest Moments at Fox News, From 2012 Election to Trump Debate (Videos)

Since landing her prime-time gig in 2003, the anchor and host built "The Kelly File" into a ratings darling, finishing 2016 as the second-highest rated show in cable news, behind only her lead-in, "The O'Reilly Factor."

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