Updated: 02/14/2014 11:25 AM
Created: 02/13/2014 7:51 PM KSTP.com
By: Cassie Hart
A loud, strange noise early Thursday morning woke up some residents in St. Paul and frightened others.
People heard it for about an hour, in and around the Highland Park and Mac Groveland neighborhoods.
KSTP called Ramsey County dispatch and sent a crew to investigate. Dispatch said they received about 10 calls from homeowners wondering what the noise was. They sent out a few officers to investigate but they couldn't find anything.
The howling traveled for miles, right through the walls of homes. It woke up Rookie from 1500 ESPN's Garage Logic Show. "I was very ghoulish. It sounded like a shrieking whales, it just sounded like a sound I never heard before."
A lot of people are wondering if the mysterious howl was the ice shifting from the Mississippi River after a few warmer days.
KSTP compared ice shifting sounds on YouTube and it’s still undetermined.