A powerful mid and upper level system brought terrifically strong wind fields aloft over the southern and central portions of the Great Plains region on March 28.
Ahead of the system, a dry line developed from a low-pressure area over extreme northeastern Colorado and the Nebraska Panhandle southwards into western Texas.
Increasing south to southeasterly winds close and above the surface caused a progressively humid air mass to spread across the western portion of the Great Plains during the afternoon.
The advancing dry line and the cold front moving eastward combined to produce explosive supercell development late in the afternoon.
Early that evening, supercells containing severe thunderstorms and tornadoes was developed along a nearly continuous line from near Lubbock, Texas to Rapid City, South Dakota.
Nonetheless, several tornadoes were reported, with two striking the Oklahoma City metropolitan area with almost no advance warnings issued before they struck.
A moderate risk was issued for central Texas on March 31 with the storm line continuing through the state, along with Oklahoma and Kansas in a north-eastern direction.
The system weakened that evening and no tornadoes occurred afterwards; however, NWS officials later confirmed a microburst in the Illinois cities of Carol Stream and Glendale Heights in DuPage County just west of Chicago just before 10:00 PM CDT.