Your 3pm South Dakota weather update Active alerts: Severe Thunderstorm Warning, Severe Thunderstorm Warning, Severe Thunderstorm Warning. around 70 degrees Good afternoon, South Dakota. Folks, we've got a severe weather situation unfolding right now, a Tornado Watch is active for western counties until 11 P.M. And a Severe Thunderstorm Warning is hitting parts of Custer and Pennington counties as I record this.