DES MOINES, Iowa -- More expecting mothers are getting ready for special deliveries this fall, thanks to what's being called the "Polar Vortex baby boom."

Maternity wards are busier than ever some nine months after the end of our bitter cold winter.

Meet Olivia Doyel who came into the world Thursday. "When we got here only one room was available so the whole place was full, so it's busy," said Brandon Doyel, a new father.





9 PHOTOS polar vortex See Gallery Polar Vortex baby boom arrives in Iowa This image was captured by NOAA's GOES-East satellite on Jan. 6, 2014, at 11:01 a.m. EST (1601 UTC). A frontal system that brought rain to the coast is draped from north to south along the U.S. East Coast. Behind the front lies the clearer skies bitter cold air associated with the polar vortex. ONTARIO, CANADA- MARCH 10: A group of ice fishers gather on the frozen surface of Great Lakes after the Niagara Falls frozen over due to the extreme cold weather, Canada, North America, on March 10, 2014. The Polar Vortex brought record cold temperatures from Kansas to Maine. The views attract attention by many photographers and tourists. (Photo by Seyit Aydogan/Anadolu Agency/Getty Images) ONTARIO, CANADA- MARCH 10: A group of ice fishers gather on the frozen surface of Great Lakes after the Niagara Falls frozen over due to the extreme cold weather, Canada, North America, on March 10, 2014. The Polar Vortex brought record cold temperatures from Kansas to Maine. The views attract attention by many photographers and tourists. (Photo by Seyit Aydogan/Anadolu Agency/Getty Images) ONTARIO, CANADA- MARCH 10:A view of the Niagara Falls frozen over due to the extreme cold weather, Canada, North America, on March 10, 2014. The Polar Vortex brought record cold temperatures from Kansas to Maine. The views attract attention by many photographers and tourists. (Photo by Seyit Aydogan/Anadolu Agency/Getty Images) NEW YORK, NY - JANUARY 08: A man bundles up against the cold on the afternoon of January 8, 2014 in New York City. Today was slightly warmer than yesterday, when a polar vortex descended from the Arctic on much of the country, though today's temperatures were still well below freezing. (Photo by Andrew Burton/Getty Images) CHICAGO - JANUARY 07: Chicago Skyline, as steam rises from Lake Michigan due to the 'Polar Vortex' sending temperatures well below zero in Chicago, Illinois on JANUARY 07, 2014. (Photo By Raymond Boyd/Getty Images) CHICAGO - JANUARY 07: Steam rises from the Chicago River due to the 'Polar Vortex' sending temperatures well below zero in Chicago, Illinois on JANUARY 07, 2014. (Photo By Raymond Boyd/Getty Images) CROFTON, MD. - JANUARY 7: Canada Geese rest on a frozen pond as bitter temperatures engulfed the Washington area on Tuesday, courtesy of the frigid air mass that descended on Monday and spread across the nation on January, 7 2014 in Crofton, MD. (Photo by Jonathan Newton / The Washington Post via Getty Images) ONTARIO, CANADA- MARCH 10:A view of the Niagara Falls frozen over due to the extreme cold weather, Canada, North America, on March 10, 2014. The Polar Vortex brought record cold temperatures from Kansas to Maine. The views attract attention by many photographers and tourists. (Photo by Seyit Aydogan/Anadolu Agency/Getty Images) Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

All 39 maternity rooms and the NICU are full right now at Unity Point Health in Des Moines.

Doctors believe the baby bonanza is a result of the polar vortex last December and January. It was one of the snowiest and coldest winters on record.

"We tried to avoid the snow and went to the Bahamas and that's when she happened," said Doyel.

Even the Doyel's doctor is due any day and the hospital spokeswoman started having contractions during our interviews on Friday.

"I don't know if there's any science about it. In Iowa, there's not a lot to do than to try to keep warm," said Amy Varcoe, Unity Point spokeswoman.

"I always made the assumption it's winter nights and cozy nights, a little bit of cabin fever," said Dr. Amy Bingaman.

Bingaman is feeling the whiplash of winter in the delivery room now.

"Seven deliveries in nine hours, so it can be very busy," said Bingaman.

The increase in births in Iowa is part of a nationwide trend with August and September being the busiest months in maternity wards.

"With all the cold last winter, people are trying to find a way to stay warm inside. What else you going to do?" said KCCI Meteorologist Metinka Slater.

With meteorologists forecasting another frigid winter ahead, those hoping to get pregnant may want to plan ahead to avoid a crowd of blizzard babies next fall.

"Get busy now then you'll have plenty of room and space come spring and summer," said Varcoe.