Cheyenne Frontier Days was supposed to conclude with some chance showers and storms. Instead, Cheyenne was briefly overrun with smoke for almost an hour as visibility went down to 2 statute miles. After further investigation, preliminary reports were found of a wildfire in Carter Canyon near Gering, NE that started late Saturday. Some reports indicated an evacuation of Carter Canyon Road that same night as 1,000 acres had already burned. More recent reports have the wildfire as large as 13,000 acres with multiple starting points and a breeze of 20 mph adding to the fast growth throughout Sunday. Winds from the northeast will indicate whether Cheyenne will receive more smoke from the blaze. The Monday smoke forecast is not favorable. Throughout the day, smoke will become heavier until midnight when a change in wind direction will clear out southern Wyoming from the fumes and haze.