Buena Vista County emergency officials are urging residents to stay weather aware — and to think twice before sharing severe weather photos online — after an AI‑generated tornado image caused confusion and unnecessary response last week.
The picture, which appeared to show a tornado near Alta late Thursday afternoon, made its way to a regional news outlet and was shared widely on social media. But no tornado ever touched down.
Buena Vista County Emergency Management Coordinator Aimee Barritt says her office received the photo directly from a resident through Facebook Messenger. Because tornado reports are taken seriously, she immediately contacted Alta Fire Chief Kirk Reetz, and the two went out to look for any signs of damage. At the same time, the National Weather Service called her office after seeing the photo themselves.
Buena Vista County Sheriff Kory Elston says one of the biggest indicators that the photo wasn’t real was what didn’t happen.
He says trained spotters were already in the area at the time, noting that Iowa Highway 7 at 4:30 p.m. is one of the busiest stretches of two‑lane highway in the state — making it unlikely a tornado would go unnoticed. The sheriff’s office later traced the image back to what started as a joke among friends.
Elston says the photo was shared so widely that people began reposting it as their own, and it even resurfaced in other parts of the state over the weekend.
Barritt says the confusion caused by last week’s fake photo is a good reminder of how tornado sirens actually work in Buena Vista County — and when residents should expect to hear them.
She says there are three specific conditions that trigger siren activation.
First, sirens sound when the National Weather Service issues a tornado warning for a specific area. Warnings today are issued in polygons — not entire counties — so only the communities inside that polygon will hear their sirens.
Second, sirens will also sound during a severe thunderstorm warning or high‑wind warning if wind speeds are expected to exceed 80 miles per hour. Again, only the towns inside the warning polygon are activated.
And third, sirens can be turned on when law enforcement, fire crews, or other trained public‑safety officials report dangerous conditions they’re seeing in real time and request activation through the county communications center.
Barritt also stresses that tornado sirens are outdoor warning tools, not indoor alerts. She recommends utilizing additional alerting tools to remain safe in severe weather.
Residents can sign up for BV Alerts — the county’s free text and email notification system — by visiting bv911.com and clicking on the sign-up button near the bottom of the webpage.
As severe weather season ramps up, Barritt says the best protection residents have is awareness — knowing the forecast, knowing where to go, and knowing how to get alerts when it matters most.
