Go to main content
Meta Title

Hanging on for Safety in a Flash Flood

Meta Long Description

Tammy Chervitz was driving to the airport one morning when her car became caught in a flash flood. An OnStar Advisor gave life-saving advice to help her escape the raging waters.

Meta Short Description

Tammy Chervitz was driving to the airport one morning when her car became caught in a flash flood. An OnStar Advisor gave life-saving advice to help her escape the raging waters.

Meta Button Label


Meta Background Image


Meta Background Position

45% 1%

Meta Article Icon


Meta Article Subtitle
Meta Article Subtitle 2


Meta Article Subtitle 3
Meta Button URL


When flash flooding hit a small Missouri town, an OnStar Advisor helped one Member stay safe above the raging waters

Tammy Chervitz just wanted to drive to the airport for a business trip. One Monday morning in August, the financial analyst was leaving her subdivision in Wildwood, Missouri, when she noticed some water on the road. It was raining, so Tammy thought nothing of it and kept driving. But as the road dipped down, Tammy realized she had unknowingly driven her 2018 GMC Acadia into deep water.

It was a flash flood. Tammy knows never to drive into standing water, but this flood caught her by surprise. “It’s a spot that’s never flooded. All the neighbors said they’ve never seen anything like this,” she says. “What’s normally a road was actually a river.”

Tammy tried to call her husband, but she didn’t have a signal on her cell phone. “He had no idea I was stuck down there. So I looked up at the SOS button and I thought, ‘This is why I have OnStar,’” she says.

Tammy was immediately connected with an OnStar Emergency Advisor*64 who contacted first responders and tried to reach Tammy’s husband.*16a He also began giving her advice on how to stay safe in the floodwaters.

“The first thing he told me was, ‘You have to get the window down so you can get out,’” Tammy recalls. Then the Advisor told her to look for a safe spot outside of the vehicle she could climb to in case the vehicle started to move in the rushing waters.

“Leaving my car and going into the water was absolutely not what I wanted to do,” she recalls. So she sat with the car window open for about 20 minutes, ready to leave if the vehicle moved. The Advisor stayed on the line with Tammy the whole time.

First responders arrived quickly, but they were on the opposite side of the fast-flowing waters from Tammy, meaning they couldn’t immediately see her — and didn’t have a way to reach her. They requested a boat to help, but weren’t sure whether they’d be able to cross the fast-flowing currents to reach Tammy.

When Tammy felt her Acadia begin to shift in the floodwaters, she left her vehicle and found a tree nearby to grab on to. And just in time. “It was probably within five minutes that the current picked the car up and took it,” she says.

Tammy clung on to the tree in the rushing, waist-deep water and pouring rain, hoping someone would be able to help her. “I’m thinking, ‘No one can get to me until the rain stops and the water goes down,’” she says.

At first, Tammy’s car came to rest against a signpost. But within minutes, the post broke and her vehicle was washed away by the current. “If I’d still been in that car, I would have drowned,” Tammy says.

Suddenly, she saw another vehicle approaching from the opposite direction of the first responders. It was her husband, Chuck, riding in a neighbor’s off-road vehicle. Their neighbor jumped into the water and attached the vehicle’s winch rope to a nearby tree. He then helped Tammy cross the water and Chuck pulled her into the truck — and to safety.

“Chuck was very distraught thinking I was submerged in the car and I was drowning,” she recalls. “We both kind of lost it after we knew I was safe.”

Only an hour later, the waters subsided. But by then the flash flood had wreaked havoc on the town, closing schools and washing debris through backyards. “The area looked like a warzone,” Tammy says.

Tammy has been an OnStar Member since 2003 and says she has always appreciated the added peace of mind of knowing the service would be there in a crisis.

“I’ve had OnStar for years and I keep it on all my vehicles,” she says. “I’ve mostly used it for the monthly email diagnostics reports,*21 but I never expected to have to use it for an emergency.”

Tammy is grateful she had an OnStar Advisor on her side during the flash flood. “There's just so much that he told me that you wouldn't think to do on your own, and just having somebody who I knew was with me was everything at that moment,” she says.