3. A wall cloud in the sky might take you out of Kansas
Lying on the grass and watching fluffy white clouds may be a calming way to pass the time, but if you find yourself watching a wall cloud, get to shelter. Wall clouds sit lower than the rest of the thunderstorm and can be up to five miles long.
Quickly rising air makes the pressure drop below the storm, forming the wall cloud. But these formations can mean danger, because if the cloud is rotating, it could produce a destructive tornado. As we all learned from the Wizard of Oz, tornadoes can be the start to an amazingly colorful journey, but usually, they’re just bad news.