Watch (Direct TV) KNBN NBC 21 News Rapid City, SD local breaking news update Channel Live stream Online. You can also find a radar weather forecast which presents the Girls Team. KNBN Channel 21 NBC News live streaming online is an NBC-affiliated television station that works in Rapid City, South Dakota, eas of the United States. It telecast its transmission on virtual 13 (VHF digital 63). It is owned by the ( Jim Simpson’s Rapid Broadcasting, LLC) Broadcasting media network group and works under the supervision of a shared services agreement (SSA). KNBN has two shared production studios located on South Plaza Drive in Rapid City. KNBN transmission house is located on Cowboy Hill west of downtown. The station began telecasting on May 14, 2000, with the theme of (Coverage You Trust).