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OKLAHOMA CITY - The power was cut to a malfunctioning tornado siren on the city's northwest side Thursday evening, causing confusion of those nearby as storm systems moved through the area.

Malfunctioning siren at Geraldine Park, near Geraldine and NW 30th. @OKCFD just arrived on scene. pic.twitter.com/qDlJ6vc2uY — Bill Miston (@billmiston) September 6, 2018

The siren, located at Geraldine Park, 3203 N. Geraldine Ave, sounded for at least an hour. A number of people in the park were startled by the noise, wondering if they needed to take shelter. There was no tornado watch or warning anywhere in Oklahoma.

"I've been here for about 15 minutes and to my surprise, the first thing you’re going to do is check your phone," said Justin Schumacher of Yukon, at the park for his son's soccer practice. "And I check my phone -- of course there was no activity on the alerts -- so everybody else was kind of still here, but then again, you still wonder."

“I looked up, I knew there was a front coming in and it’s like, 'there’s not supposed to be anything today!'" said Gary Holt, wearing safety earmuffs around his neck, and whose house is adjacent to the siren. "Of course, I know how it changes.”

The Oklahoma City Fire Department arrived with a ladder for a city employee to access the siren control panel. The city's 911 Center technology manager said there was a likely malfunction with the siren's controller board, possibly because of humidity and moisture.

Power to the siren, which runs on battery and solar power, has been shut off and the siren will be looked at next week, the city employee said.

We are aware that an Outdoor Warning Siren near NW 23rd and Meridian has malfunctioned. There is no tornado threat. We are looking into the problem. @cityofokc #OKC #okwx — OKCOEM (@okcoem) September 6, 2018

The malfunctioning siren is the second in the metro in as many days. The city of Moore cut power to one of its malfunctioning sirens Wednesday.