Transcript for Midwest, Southeast dealing with flash flooding
overnight in California. A power outage in Irvine left some 28,000 Orange county customers in the dark and grounded all flights in and out of John Wayne airport. A fire at an electrical substation just after 6:00 P.M. Causing the outage. Three terminals filled with passengers, dark and coming to a grinding halt, the lights finally coming back on at John Wayne airport around 9:00 P.M. But flights not resuming until this morning. The cause of the fire still under investigation. Weather now and we are watching two separate systems. Both of them producing dangerous downpours, flash flooding hitting the heartland leading to water rescues like this one which happened in Kansas. Officials say they had to save this man from the roof of his submerged car. We're also watching threats in the tropics. The southeast hit hard causing flooding in Florida. All that as a new system continues to brew in the atlantic. Brittany bell from our ABC station in Raleigh, north Carolina, is in for rob this morning, and she is tracking it all. Good morning, Brittany. That water is causing a lot of problems all across the country. Right now here's a look at some video of just the power of that water. Showing a train derailment just to the south of rapid city, South Dakota. That actually caused two of those crew mens to be rescued. Thankfully they have nonlife-threatening injuries. So, please, if you see standing water, remember, turn around, don't drown. Still looking at additional showers in the same exact area. That's why we do have that flash flood watch. That is in effect for northeastern sections of Oklahoma throughout western Arkansas including Fayetteville and ft. Smith. Also looking at the timing of these showers, we'll see that threat moving farther to the south in Oklahoma and Arkansas. They could see locally up to six inches of rainfall. And then across the southeast. That threat continues. That combination of that front with that tropical air is why we have that heavy rain threat looking at rainfall amounts as high as four inches. In the atlantic another system that could become a tropical depression or tropical storm
This transcript has been automatically generated and may not be 100% accurate.