Flood Watch
from FRI 11:00 AM MST until SAT 11:00 PM MST, Yavapai County Mountains, Little Colorado River Valley in Coconino County, Little Colorado River Valley in Navajo County, Little Colorado River Valley in Apache County, Eastern Mogollon Rim, White Mountains, Northern Gila County, Yavapai County Valleys and Basins, Oak Creek and Sycamore Canyons, Western Pima County including Ajo/Organ Pipe Cactus National Monument, Tohono O'odham Nation including Sells, Upper Santa Cruz River and Altar Valleys including Nogales, Tucson Metro Area including Tucson/Green Valley/Marana/Vail, South Central Pinal County including Eloy/Picacho Peak State Park, Southeast Pinal County including Kearny/Mammoth/Oracle, Upper San Pedro River Valley including Sierra Vista/Benson, Eastern Cochise County below 5000 ft including Douglas/Wilcox, Upper Gila River and Aravaipa Valleys including Clifton/Safford, White Mountains of Graham and Greenlee Counties including Hannagan Meadow, Galiuro and Pinaleno Mountains including Mount Graham, Chiricahua Mountains including Chiricahua National Monument, Dragoon/Mule/Huachuca and Santa Rita Mountains including Bisbee/Canelo Hills/Madera Canyon, Santa Catalina and Rincon Mountains including Mount Lemmon/Summerhaven, Baboquivari Mountains including Kitt Peak, Kofa, Central La Paz, Aguila Valley, Southeast Yuma County, Gila River Valley, Northwest Valley, Tonopah Desert, Gila Bend, Buckeye/Avondale, Cave Creek/New River, Deer Valley, Central Phoenix, North Phoenix/Glendale, New River Mesa, Scottsdale/Paradise Valley, Rio Verde/Salt River, East Valley, Fountain Hills/East Mesa, South Mountain/Ahwatukee, Southeast Valley/Queen Creek, Superior, Northwest Pinal County, West Pinal County, Apache Junction/Gold Canyon, Tonto Basin, Mazatzal Mountains, Pinal/Superstition Mountains, Sonoran Desert Natl Monument, San Carlos, Dripping Springs, Globe/Miami, Southeast Gila County

Cincinnati Zoo's Fiona the hippo gets a sibling

New baby hippo at Cincinnati Zoo is sibling to Fiona (photo credit: Cincinnati Zoo)

The Cincinnati zoo is celebrating the birth of a full-term hippopotamus that is a sibling to Fiona, who became a global celebrity when she was born prematurely in 2017.

The baby hippo was born Wednesday night.

"This new calf weighs at least twice as much as Fiona did and is already walking," said Christina Gorsuch, Cincinnati Zoo’s director of animal care in a news release.

Staff at Cincinnati Zoo & Botanical Garden discovered the calf’s mother, 23-year-old Bibi, was pregnant around April Fool’s Day. It came as a surprise because Bibi was on birth control.

"Bibi and the baby, yet to be named, will spend the next two weeks bonding behind the scenes," said Gorsuch. "A female would take her newborn away from the bloat for about that amount of time in the wild, and we try to give Bibi the choice to do what feels natural to her."

RELATED: Cats classified as 'invasive alien species' by respected scientific institute

Bibi’s first baby, Fiona, only weighed 29 pounds (13 kilograms) when she was born six weeks premature and wasn’t able to stand on her own. Fiona now weighs 2,000 pounds (907 kilograms), the zoo said.

GettyImages-1230298745.jpg

Fiona the hippos is seen during the annual PNC Festival of Lights Christmas Celebration at the Cincinnati Zoo and Botanical Gardens (Photo by Jason Whitman/NurPhoto via Getty Images)

The zoo saw an increase in visitors and social media views after Fiona’s birth. Some animal rights groups criticized it for marketing a captive animal.