A strong storm system will move across the northern high plains this afternoon and evening, bringing numerous thunderstorms to the area. Thunderstorms will form by mid-afternoon in northeastern Wyoming, and then overspread western South Dakota during the late afternoon and evening. There is a moderate risk of severe storms for parts of northeastern Wyoming and far southwestern South Dakota, and there is an enhanced risk of severe storms for much of the rest of the area, with large hail, damaging wind gusts, and a few tornadoes possible. The best chance for tornadoes will be across northeastern Wyoming and far southwestern South Dakota.
Southeast and east-central Wyoming
Southwestern South Dakota
Far northeast Colorado
Several tornadoes, a few intense
Widespread large hail, some baseball size
Scattered damaging winds
Severe thunderstorms with tornadoes, very large hail, and
damaging winds are likely this afternoon into tonight across the
north-central High Plains.