SPC AC 240039
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0739 PM CDT Sat Mar 23 2019
Valid 240100Z - 241200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM PORTIONS OF
CENTRAL OK INTO NORTH-CENTRAL TX...
Isolated severe thunderstorms remain possible this evening near/east
of the I-35 corridor from central Oklahoma into north-central Texas.
Isolated supercells continue near/just east of the I-35 corridor
from central OK into north-central TX. This activity developed along
the eastern plume of steeper low-level lapse rates along the dryline
as temperatures warmed into the low-mid 70s. In the absence of
appreciable large-scale forcing for ascent, boundary-layer cooling
should negatively impact updraft intensity over the next few hours.
00z sounding from OUN exhibited SBCAPE on the order of 1900 J/kg
with deep-layer shear supportive of supercells. Ongoing activity
reflects this environment favorably and large hail is the most
common severe risk with the strongest updrafts. Latest
radar/satellite trends suggest the greatest severe threat will be
across central/southern OK through 03z.
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