|Mesoscale Discussion 956|
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Mesoscale Discussion 0956
NWS Storm Prediction Center Norman OK
0416 AM CDT Sun May 29 2022
Areas affected...Far Southeast SD...Far Southwest MN...Extreme
Concerning...Severe Thunderstorm Watch 285...
Valid 290916Z - 291045Z
The severe weather threat for Severe Thunderstorm Watch 285
SUMMARY...The threat for large to very hail and strong wind gusts
continues within Severe Thunderstorm Watch 285.
DISCUSSION...A strong elevated supercell continues to move
northeastward across far southeast SD towards extreme northwest IA
and adjacent southwest MN. This region is in the northwestern
periphery of a strong low-level jet that extends across the southern
and central Plains. Warm-air advection associated with this
low-level jet is expected to remain over the region for the next
several hours as the low-level jet persists. This warm-air advection
coupled with increasing low-level moisture and steep mid-level lapse
rates should support the perseverance of this supercell.
Primary threat is currently large to very large hail. Recent MRMS
MESH estimates hail over 3". Additionally, despite low-level
stability, some strong wind gusts are also possible, particularly as
this supercell interacts with an outflow boundary from earlier
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 43569734 43929668 44169558 43899517 43359523 43129602
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