There is a marginal to slight (1 to 2 out of 5) risk of severe thunderstorms over parts of western South Dakota from about 800 PM this evening to 600 AM MT Monday morning. The main threat from these elevated thunderstorms will be 2+” hail, but damaging wind gusts, heavy downpours, and frequent lightning can occur. Monitor the weather and have a plan of action if severe weather is imminent.