ACUS11 KWNS 280057
SWOMCD
SPC MCD 280056=20
NEZ000-280230-

Mesoscale Discussion 1359
NWS Storm Prediction Center Norman OK
0756 PM CDT Sat Jun 27 2026

Areas affected...portions of northwestern Nebraska

Concerning...Tornado Watch 406...

Valid 280056Z - 280230Z

The severe weather threat for Tornado Watch 406 continues.

SUMMARY...A discrete supercell in the Nebraska Panhandle will pose a
risk for all severe hazards over the next 1-2 hours.

DISCUSSION...Regional radar imagery depicts an intensifying,
discrete supercell located in Box Butte County, South Dakota. Latest
objective analysis places this storm in an environment favorable for
all severe hazards, with 4000+ J/kg MLCAPE, SHIP values of 3-4, and
effective layer STP of 4-5+ noted within the inflow region. This is
supported by strengthening low-level flow and increasingly curved
low-level hodographs noted within the LNX VWP, with 40+ kts of
southerly flow sampled at 1 km AGL and 0-500 m SRH approaching 200
m2/s2. While modest capping/inhibition remains in this environment,
strong dynamical lifting within the mesocyclone should continue to
overcome this inhibition for at least another 1-2 hours as it
progresses eastward across northwestern Nebraska.

..Chalmers.. 06/28/2026

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-ZtWkrqpLu-xQKTHSJyJDLkAhU6peYXQ0pP5xyYtJeRBP7CFCf8EGfb6P9Y-LYeyaZfw3C8gK= zFRiBibttGO7PiuKI0$ for graphic product...

ATTN...WFO...LBF...CYS...

LAT...LON 42550293 42710262 42800199 42700141 42420126 42060159
41980219 42100291 42320304 42550293=20

MOST PROBABLE PEAK TORNADO INTENSITY...100-125 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN


=3D =3D =3D
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* Origin: Capitol City Weather Station (1:2320/127)