April 24-27 Outbreak: Affected Areas (April 21)

3 days away, the HPC is predicting the cold front to begin storms to develop.
Below is the surface analysis forecast

A triple point is especially worrying. Below is the HPC gridded forecast providing a more accurate description of the system.

At 7pm CDT, a large area of severe storms will erupt. They should be in the area delineated in the area above.
Next will be the forecast for 5 days out.

Here we see a much more potent severe weather squall line. This also has more confidence, as the forecasters gave the area in dark red a 'likely' chance of convection.
The Weather Centre will keep monitoring the storms.