A large, strong storm system will organize over the Rocky Mountains over the next several days. Pieces of energy will rotate out of this larger system, producing a severe storm threat for at least the next three days over parts of the Plains. Very large hail, destructive winds, and perhaps a few tornadoes will occur.
There will be a narrow corridor of sufficient instability on all three days, so the east-west extent of the severe risk will not be wide. However, within that narrow corridor, afternoon heating will produce moderate instability. Meanwhile, strong vertical wind shear will combine with the instability to produce severe cells.
The best threat for severe storms on Monday afternoon and evening will be found in Nebraska and eastern South Dakota. Look for severe storms on Tuesday afternoon and evening from western Oklahoma through Kansas to eastern Nebraska. By Wednesday, the severe risk will stretch from west-central Texas through Oklahoma and eastern Kansas.
Very large hail and high winds will accompany severe storms on all three days. Isolated tornadoes will be more of a threat for Tuesday and Wednesday.
Lead picture courtesy flickr user Anthony Quintano.