It's the first significant tornado outbreak of the season.
But now there's a tool that can help you find out more about loved ones who may be in harm's way.
It's called the Red Cross Tornado app.
The Red Cross said it's designed to save lives, especially for people who are away from a radio or television and don't know a tornado's coming.
The whole country watched as dozens of tornadoes touched down from the Midwest to the South this week.
You couldn't see much until the roof came off, said Shawn Riddle a tornado survivor in Arkansas. I had to hold the door because it kept trying to open up.
As resources start rolling in to help the areas hardest hit, volunteers in Oregon said they are ready, should they get the call for help.
We haven't yet been notified if they need people from our area to go, said Paula Fasano Negele with the Oregon chapter of the American Red Cross.
The Red Cross said the app puts lifesaving information right in the hands of people who need it most.
For example, my family lives in the Midwest which is a very tornado-prone area. So this [the app] alerts me if there's something that happens in that area, said Negele.
The app gives all smartphone and tablet users instant access to local and real-time information, so they know what to do before, during and after a tornado.
The app has a high-pitched siren and tornado warning alert that signals people when a tornado warning has been issued, even if the app is closed.
There's really a lot of benefit to it, said Negele.
An all clear alert lets you know when a tornado warning has expired or has been canceled.
From your mobile phone, you can call **73327677 to get the app link.