699
ACUS11 KWNS 050439
SWOMCD
SPC MCD 050439
SDZ000-NEZ000-050615-

Mesoscale Discussion 0985
NWS Storm Prediction Center Norman OK
1139 PM CDT Thu Jun 04 2026

Areas affected...Parts of south-central/southeast SD into far
northern NE

Concerning...Severe Thunderstorm Watch 273...

Valid 050439Z - 050615Z

The severe weather threat for Severe Thunderstorm Watch 273
continues.

SUMMARY...Some severe threat may persist into the early overnight
hours, though an eventual weakening trend is expected with time.

DISCUSSION...A storm cluster has grown in size late this evening
from central SD Into far northern NE, along and north of a surface
boundary. Measured severe gusts have recently been noted across
south-central SD and far northern NE, and some severe-wind threat
may continue after Midnight CDT, as this cluster moves eastward
across a moderately unstable environment. Stronger embedded updrafts
may also be capable of isolated hail.

With only modest organization noted with the ongoing cluster, and
increasing CINH downstream, an eventual weakening trend is expected
overnight. Depending on short-term observational trends, a local
expansion of WW 273 may eventually be needed, but longevity of the
severe threat appears too limited for new watch issuance.

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

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

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

LAT...LON   44439972 44669895 44639805 44369759 44059718 43759708
            43419726 43059782 42689829 42569920 42499990 42759999
            43159954 44439972

MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN