With a vigorous upper-level system moving east through the Rocky Mountain region during the day Sunday, strong winds mixing down to the surface kicked up dust across a very dry southern Colorado. This dust was captured in GOES-16 visible imagery (Fig 1), and confirmed in split window difference (SWD) imagery (Fig 2). Negative values of SWD (very dark gray to black in this color table), indicate lofted dust. Overlaid on the SWD imagery is 10.35 um IR imagery (non gray colors) for cold temperatures (clouds).
Water vapor imagery showed the system as it advanced east through the afternoon and early evening, including the acceleration of a cold front down the eastern Colorado plains (Fig 3).
Bill Line, NWS