San Antonio/Austin sounds like they are worried about our next two days but not confident enough to raise the alarm just yet. It's a lengthy discussion so I will pick a couple of spots. Linked if you want to read it. Definitely looks like a flash flood event which we have a lot in May.
Discussion
Instability (and PWATS, which will become more important to monitor
as we
head into the long term) will only continue to increase on
Wednesday as S/SE
BL flow continues and sunshine again looks
possible during the day especially out west. Additional severe
weather will be possible as the deep
trough draws nearer and a cold
front approaches right at the end of the short term. This round of
storms is
likely to develop in Mexico in the afternoon and impact
our western counties after 20Z, potentially reaching the Hill
Country before 00Z Thur as well. Again, large to very large
hail and
damaging winds will be possible. Probably looking at a slightly
better
tornado threat out west late Wednesday compared to tonight as
the
cap finally erodes away completely and low level
SRH remains
elevated. Locally heavy
rainfall cannot be ruled out Wednesday
afternoon as well. The Coastal Plains will
likely miss out on all of
the activity over the next 36 hours but most of the rest of the area
will see at least slight chances for some much needed
rainfall.
Initially the storms are
likely to be supercellular through the
southern Edwards Plateau and Rio Grande late Wednesday afternoon and
early Wednesday evening, then congealing into clusters and an
eventual broken line through the Hill Country and I-35 corridor.
Parameters are favorable for the discrete storms out west in the
early evening to be capable of producing all severe hazards,
including very large
hail and
isolated tornadoes.
SPC has introduced
a Day 2
Slight Risk along and west of I-35, including a hatched area
for 2"+ diameter
hail through the Rio Grande, southern Edwards
Plateau, and western Hill Country.