The MODIS RGB image from Sunday shows a system in the middle of the country which is pulling high winds from the Southwest and pushing high winds down in Colorado. The system has caused nearly a dozen tornadoes in Oklahoma and Missouri. The GASP image (right) shows that high aerosol optical depth is seen across New Mexico and Texas and extends up into Oklahoma. High AOD in Missouri is coupled to the same system.
The VIIRS imager shows dust (orange) on the dusk mask on Sunday but the large area of high PM2.5 seen in AIRNOW does not match the VIIRS dust mask.
This strong system will continue to move eastward on Monday and will continue to bring large hail and the possibility of tornadoes in the southeast. At 11:00pm on Sunday another tornado touchdown has been reported in Arkansas.
Update: April 28
Colin Seftor of NASA GSFC pointed out to me that OMI did see the dust from Sunday. Here is the OMI AI image: