According to the SPC: “The HIGH risk area almost always means a major severe weather outbreak is expected, with great coverage of severe weather and enhanced likelihood of extreme severe (i.e., violent tornadoes or extreme convective wind events over a large area).”

In these high-shear, low instability setups we can get isolated severe thunderstorms. Damaging winds and even the possibility of a brief, spin-up tornado will be the threats. Timing will be very important.