The devastating Oklahoma tornado updates

Before the storm

9:24 a.m.: Oklahoma Medical Examiner reports 24 people dead, seven of which are children, dramatically lowering the number of people believed killed.

7: 15 a.m.: Oklahoma Gov. Mary Fallin told "Good Morning America," "It's a very sad day in Oklahoma. A lot of hearts have been broken."

6:43 a.m.: President Obama will deliver a televised statement regarding the Oklahoma tornado at 10 a.m. ET.

6:28 a.m.: Pope Francis tweeted, "I am close to the families of all who died in the Oklahoma tornado, especially those who lost young children. Join me in praying for them."

5:33 a.m.: McClain County Animal Response Team spokesperson Dr. Patty Mannas told ABC News affiliate KOCO-TV that at least 50 pets have been pulled from the rubble in Moore, Okla.

"We've already reunited a few animals and animals with microchips have a very, very high percentage of being reunited with their families," she said.

4:20 a.m.: The death toll remains at 51 but the Oklahoma Chief Medical Examiner said they expect around 40 more bodies.

2:50 a.m.: Moore officials tell ABC News the search and rescue operation at Plaza Towers Elementary School is now a recovery effort.

12:50 a.m.: Texas Task Force 1, the state's elite search and rescue team, has been activated to assist local officials and first responders in Oklahoma. The team, which includes 84 total members, was deployed to New York City following 9/11 and to New Orleans in the aftermath of Hurricane Katrina. It was recently deployed to West, Texas, following the explosion of a fertilizer plant.

Monday's devastating tornado that ripped through Moore, Okla., killed at least 51 people, including 20 children, but authorities expect that number to rise. Spokeswoman Amy Elliott of the Oklahoma City Medical Examiner's office said she believes at least 91 people are dead.

This is so devastating. Our thoughts, prayers and hearts are with Oklahoma and everyone effected. Keep strong.