718
ACUS11 KWNS 290443
SWOMCD
SPC MCD 290443
SDZ000-NEZ000-290645-
MESOSCALE DISCUSSION 1372
NWS STORM PREDICTION CENTER NORMAN OK
1143 PM CDT SUN JUN 28 2026
AREAS AFFECTED...PARTS OF NORTHWESTERN NEBRASKA INTO CENTRAL SOUTH
DAKOTA
CONCERNING...SEVERE THUNDERSTORM WATCH 412...
VALID 290443Z - 290645Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 412
CONTINUES.
SUMMARY...INCREASING THUNDERSTORM DEVELOPMENT PROBABLY WILL CONTINUE
TO GROW UPSCALE AND BEGIN TO BECOME BETTER ORGANIZED WITH INCREASING
POTENTIAL TO PRODUCE STRONG TO SEVERE WIND GUSTS, IN ADDITION TO
LARGE HAIL, THROUGH 1-3 AM CDT.
DISCUSSION...STRONGEST FORCING FOR ASCENT ASSOCIATED WITH
LOWER/MID-TROPOSPHERIC WARM ADVECTION IS STILL DEVELOPING ACROSS THE
NEBRASKA PANHANDLE INTO AREAS OF SOUTH DAKOTA TO THE SOUTHEAST OF
THE BLACK HILLS. HOWEVER, THIS IS FORECAST TO BEGIN SHIFTING
NORTH-NORTHEASTWARD, ACROSS AND NORTH OF THE WESTERN NEBRASKA AND
SOUTH DAKOTA STATE BORDER AREA THROUGH 06-08Z. AS IT DOES, ONGOING
CONVECTIVE DEVELOPMENT IS LIKELY TO CONTINUE TO TO INCREASE AND
ORGANIZE, PARTICULARLY AS CONVECTIVE OUTFLOW CONSOLIDATES AND
PROPAGATES NORTHEASTWARD, WITHIN 30-40 SOUTHERLY DEEP-LAYER MEAN
FLOW. AS IT DOES, STRENGTHENING NORTH-NORTHEASTERLY UPDRAFT INFLOW
EMANATING FROM A MOIST UNSTABLE BOUNDARY-LAYER INCREASINGLY
CHARACTERIZED BY LOWER 70S F DEW POINTS MAY BEGIN TO SUPPORT NOTABLE
FURTHER INTENSIFICATION WITH INCREASING POTENTIAL FOR STRONG TO
SEVERE WIND GUSTS, IN ADDITION TO LARGE HAIL.
..KERR.. 06/29/2026
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...ABR...LBF...UNR...CYS...
LAT...LON 43610236 44430171 44000003 42600137 42120256 42390353
43610236
MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page