760
ACUS11 KWNS 302348
SWOMCD
SPC MCD 302347
SDZ000-310145-
MESOSCALE DISCUSSION 1807
NWS STORM PREDICTION CENTER NORMAN OK
0647 PM CDT THU JUL 30 2026
AREAS AFFECTED...PORTIONS OF CENTRAL AND NORTH-CENTRAL SOUTH DAKOTA
CONCERNING...SEVERE THUNDERSTORM WATCH 534...
VALID 302347Z - 310145Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 534
CONTINUES.
SUMMARY...THE POTENTIAL FOR SPORADIC SEVERE WIND GUSTS AND ISOLATED
LARGE HAIL CONTINUES ACROSS PORTIONS OF SEVERE THUNDERSTORM WATCH
534.
DISCUSSION...ONGOING CONVECTION ACROSS WESTERN SOUTH DAKOTA HAS
FORMED INTO A LOOSELY ORGANIZED CLUSTER OVER THE PAST 1-2 HOURS,
WITH SPORADIC REPORTS OF SEVERE WIND GUSTS AND AN ISOLATED REPORT OF
1" HAIL NOTED WITH THIS ACTIVITY. A NARROW CORRIDOR OF GREATER
MLCAPE COLLOCATED WITH WARMER SURFACE TEMPERATURES AND A LOCAL
MINIMUM IN CLOUD COVER EXISTS DOWNSTREAM OF THIS ACTIVITY, WITH A
CONVECTIVE OUTFLOW/DIFFERENTIAL HEATING BOUNDARY LOCATED FARTHER TO
THE EAST. THIS CORRIDOR OF GREATER BUOYANCY WILL CONTINUE TO SUPPORT
A RISK FOR SPORADIC SEVERE WIND GUSTS AND AN INSTANCE OR TWO OF
LARGE HAIL OVER THE NEXT COUPLE OF HOURS AS ONGOING CONVECTION
PROGRESSES EAST/SOUTHEASTWARD. THE OVERALL SEVERE RISK SHOULD THEN
GRADUALLY SUBSIDE INTO THE OVERNIGHT HOURS AS CONVECTION ENCOUNTERS
A LESS UNSTABLE AIR MASS.
..CHALMERS.. 07/30/2026
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...ABR...UNR...
LAT...LON 45370025 45200015 44869996 44589993 44260017 44010043
43900064 43870093 43860143 43870151 43920223 44080229
44460220 45000225 45240229 45390231 45580219 45720198
45820175 45880105 45740055 45560037 45370025
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN
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