Saturday Severe Weather watch thread

It appears likely that clusters of intense thunderstorms will form
by mid afternoon over parts of southeast KS/western MO/far northeast
OK, in vicinity of remnant boundaries and where extreme instability
is present. A potent combination of MLCAPE values over 5000 J/kg
and effective helicity of 200-300 m2/s2 suggests that initial storms
will likely become supercellular with a risk of giant hail and
tornadoes (perhaps strong). An evolution toward bow/lewp structures
is indicated by all model solutions, with one or more fast-moving
bow echoes likely to track from southern MO into western KY this
evening. This potential derecho would result in widespread and
potentially significant wind damage.

Initiation of thunderstorms farther southwest into OK is less
certain due to a strong cap and subtle forcing, but those storms
that form will also likely become supercellular with a risk of very
large hail and a few tornadoes. These storms may spread into parts
of AR after dark.

TL;DR version: It's coming. Watch the skies and take cover before it's too late. Stay safe!