Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0733 PM CDT Thu Jun 12 2025
Valid 130100Z - 131200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF
THE CENTRAL AND NORTHERN PLAINS...
...SUMMARY...
Scattered thunderstorms, a few severe, will spread across portions
of the central and northern Plains this evening. Hail and wind are
the primary risks.
...01z Update...
Low-amplitude short-wave trough is ejecting across the northern High
Plains of eastern MT/northeast WY early this evening. Scattered
strong-severe thunderstorms have developed along the southern
influence of this feature, particularly from southeast WY into north
central NE, along a synoptic boundary draped across this region.
While LLJ is not forecast to be particularly strong overnight, some
increase is possible into this boundary over the next few hours and
this could encourage additional storms as well as support ongoing
activity. Latest radar data suggests large hail is occurring with
the strongest updrafts, perhaps as many as half a dozen storms along
the frontal zone. As heights are suppressed across the northern
Plains tonight, low-level warm advection will likely support at
least one or more MCS-type clusters to evolve and propagate toward
the upper MS Valley by daybreak.
..Darrow.. 06/13/2025
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