Per a paper linked here by
@Jon it may not require summer wx to reduce its spread. It hypothesized multiweek periods with means of 41-52 F and low RH as the most conducive conditions. Normal means in most of the SE are already near or above 52. By late March, practically all of the non-mountainous SE will have normals warmer than 52 and the SE is in a mostly AN pattern, besides. In addition, we've already lost the low dewpoints/RH for the most part and the SER will keep RHs from getting low.
What I'm saying is that seemingly silly tweet by Trump about things improving by April per what folks told him may not be far off from what actually happens, especially in the southern US.