Latest from Jackson NWS. It's getting real.

Attention quickly turns to a more robust, and potentially
significant, severe weather episode Saturday into Sunday. Intense
Pacific jet energy diving through the Great Basin will help carve
out a potent shortwave trough that will eject out of the Desert
Southwest and into the Southern Plains before propagating into the
Lower Mississippi River Valley over the weekend. The stalled frontal
boundary will lift back north as a warm front with a marine layer
airmass characteristic of upper 60s to low 70s dewpoints advecting
well inland to the Hwy 82 corridor. While convective evolution will
be governed by mesoscale details that cannot be resolved at this
time range, the parameter space and synoptic evolution will be
supportive of several rounds of storms with all modes of severe
weather expected. Backed low-level flow will help elongate long
looping cyclonically curved hodographs within a moderately unstable
airmass with the potential for supercell activity within bands of
prefrontal confluent flow. Will maintain the enhanced risk across
portions of the area in the HWO/graphics and further upgrades could
be warranted with the potential for a severe weather outbreak not
out of the question.