Transcript for Extreme Weather: 17 People Treated for Heat Exhaustion
headline, the extreme weather, record heat in the west, ambulances rushing to a graduation when people began collapsing. In the east record rain, the flash floods from what was once tropical storm andrea, what a mess, made for dangerous driving up and down the east another system spawning this, not a twister but something else. Ginger zee is here to explain it all beginning with dangerous heat and the race for paramedics in the west. Reporter: Nine ambulances rushed to a high school graduation in brentwood, careful as temperatures soar well above 100, 17 people treated for heat exhaustion, record heat from redding to fresno and it's sticking around. Look at the temperature for sunday. Wow! Reporter: On the east coast it was a day of drying out after andrea sprinted through soaking millions from florida to new england. Just north of miami, florida, this bus overtaken by water, the passengers climbing up the seats to stay dry. Further up the coast the streets in new york became streams well. This couple saved by a passing fed ex driver. I rescued them. Reporter: The stunning video of a spout east television denver as the plains and midwest gear up for more severe weather this weekend. Ginger, you were telling me that's a land spout? Right. Even though it defines a classic tornado it's not. A super cell thunderstorm is not there. They have no rotation in that. That's actually a ground rotation, very different but still can be doing russ. More severe weather? Yes. I want to show you what is involved here. As we go through the evening hours, anyone from south western high wa down along kansas. Then tomorrow we push this east to even more populated areas, st. Louis be alert, little rock and memphis. We turn overseas tonight to
This transcript has been automatically generated and may not be 100% accurate.