This is supposed to be a fierce storm. At 3:25 PM the skies are very dark, winds have been gusting, but no rain yet. This evening through tomorrow morning will be the most intense. NWS radar shows it bearing down on north SD County right now... the southern end (us) will be along in a couple of hours.
Stay safe everyone. Expect run-off, mud, rocks, and other hazards. Hunker down and stay put if possible.