It is expected to be a severe weather day across the southern Plains of the United States.
There is a risk of strong thunderstorms from this afternoon into tonight from Oklahoma into north Texas.
The main threats are large to very large hail, strong winds, and strong tornadoes.
Cities in the moderate risk area include Oklahoma City, Norman, Broken Arrow, Midwest City, and Moore.
Meanwhile, on the Canadian side of the border, there is a risk of severe thunderstorms in northern Ontario. The main threats are strong wind and hail.