No watches are valid as of Thu Aug 27 04:09:02 UTC 2026.
No Mesoscale Discussions are in effect as of Thu Aug 27 04:09:02 UTC 2026.
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0758 PM CDT Wed Aug 26 2026
Valid 270100Z - 271200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR PARTS OF THE
CENTRAL HIGH PLAINS...AND ALSO FROM THE ARKLATEX TO THE ARKLAMISS
REGIONS...
...SUMMARY...
Isolated to widely scattered strong to severe thunderstorms remain
possible tonight across parts of the central and southern High
Plains, parts of Arkansas into the lower Mississippi Valley, and
parts of the Midwest and Ohio Valley.
...Central/southern High Plains...
Widely scattered strong to severe storms are ongoing this evening
across parts of the central/southern High Plains. The most favorable
environment resides from eastern CO into western KS, with moderate
buoyancy and effective shear of 30-40 kt within a northwesterly flow
regime. The strongest discrete cells in this area will continue to
pose a threat of hail and localized severe gusts. Some modest
clustering remains possible with time, which could result in at
least an isolated severe-wind threat as convection spreads into
western KS later tonight.
Deep-layer flow/shear is generally weaker across the southern High
Plains, but localized strong to severe gusts will remain possible
within the well-mixed environment through at least dusk.
...AR into the Lower MS Valley...
Widespread deep convection from southeastern OK into
central/southern AR may eventually evolve into a loosely organized,
outflow-driven cluster with time this evening. This could result in
a threat for scattered wind damage spreading into northern LA
through the evening, with an isolated threat possible later tonight
as storms approach the LA/MS Gulf Coasts.
...Midwest/Ohio Valley...
Scattered storms are ongoing from parts of Lower MI into parts of
the Midwest/Ohio Valley. The combination of moderate buoyancy and
marginal deep-layer shear (generally 25-35 kt of effective shear)
has only been supportive of an isolated severe threat thus far. No
substantial improvement in the environment is expected through the
evening, but ongoing storms may continue to pose an isolated severe
threat before convection generally subsides later tonight.
..Dean.. 08/27/2026
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