233
ACUS11 KWNS 050247
SWOMCD
SPC MCD 050247
SDZ000-NEZ000-050445-

Mesoscale Discussion 0984
NWS Storm Prediction Center Norman OK
0947 PM CDT Thu Jun 04 2026

Areas affected...Parts of south-central SD into
northwest/north-central NE

Concerning...Severe Thunderstorm Watch 272...273...

Valid 050247Z - 050445Z

The severe weather threat for Severe Thunderstorm Watch 272, 273
continues.

SUMMARY...A threat for severe gusts, isolated hail, and perhaps a
tornado will continue into late evening.

DISCUSSION...A small but intense storm cluster has evolved this
evening from western Cherry County, NE into Todd County, SD, in the
vicinity of a surface boundary that extends into
south-central/southeast SD. The KLNX VWP shows a notable increase in
0-1 km flow over the last 1-2 hours, which may help to sustain this
cluster as it moves across a corridor of relatively rich low-level
moisture and moderate buoyancy. Severe wind gusts appear to be the
primary hazard, though isolated hail and a brief tornado also cannot
be ruled out with any transient embedded supercells. Some severe
threat may continue just to the south of WW 273, though limited
spatial coverage of the threat across far northern NE may preclude
additional watch issuance.

Farther north, a recent increase in storm coverage/intensity has
been noted west of Pierre, SD, as outflow associated with earlier
western SD convection begins to impinge upon stronger buoyancy.
Stronger updrafts within this developing convection may produce
hail, while a larger-scale threat for severe gusts may evolve if
substantial upscale growth occurs.

..Dean/Guyer.. 06/05/2026

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...FSD...ABR...LBF...UNR...

LAT...LON   44670087 44929952 44849839 44339797 43569816 43069832
            42809857 42579914 42479993 42510066 42560121 42610168
            42930192 43250146 43490118 44670087

MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN