BoulderCAST Daily – Sun 06/21/26 | First Notable Smoke Plume Arrives for the First Day of Summer

Abrilliantly sunny start across the Front Range comes with an unwelcome companion: a broad veil of haze which has settled in across the area overnight. That haze is actually smoke advecting in from a ~13,500‑acre Iron Fire in central Utah, carried eastward within the broader flow. Aerosol guidance mixes most of it out this afternoon, but another surge from the …

Ben Castellani

Ben grew up in southwestern Pennsylvania and holds both a bachelor's and a master's degree in Meteorology, the latter being from CU Boulder. His hometown received nearly three feet of snow from the Storm of the Century back in March of 1993, sparking his initial interest in impactful weather. Ben currently works on remote sensing and data analysis software at NV5 Geospatial Software in Boulder.