
KEY POINTS
- The risk of excessive rainfall has been increased from slight to moderate
- Flash flood warnings and flood watches are up in six states, including Oklahoma
- Forecasters also warned that tornadoes are possible amid the thunderstorms
A series of severe thunderstorms is projected to hit the southern Plains Wednesday, the National Weather Service (NWS) warned late Tuesday, adding that episodes of heavy rain are also expected to bring flash flooding concerns across the south-central U.S. through early Thursday.