SPC MD 1080
MD 1080 CONCERNING TORNADO WATCH 303...305...308... FOR PORTIONS OF NORTHERN MISSOURI AND WESTERN ILLINOIS

Mesoscale Discussion 1080
NWS Storm Prediction Center Norman OK
0922 PM CDT Wed Jun 10 2026

Areas affected...portions of northern Missouri and western Illinois

Concerning...Tornado Watch 303...305...308...

Valid 110222Z - 110345Z

The severe weather threat for Tornado Watch 303, 305, 308 continues.

SUMMARY...Damaging gusts and a brief tornado remain possible with
strong to severe storms this evening. Storms are mostly behind the
outflow, but the environment near the boundary still supports some
risk.

DISCUSSION...Across parts of northern MO and western IL, initial
supercells have coalesced into several clusters along and north of
an east-west oriented outflow boundary across northern MO and
northwest IL. The environment south of the boundary remains
moderately unstable with MLCAPE of 2000-2500 J/kg. This is
supporting a risk for stronger thunderstorms within the ongoing
clusters. Deep-layer shear, aided by an observed 50 kt low-level
jet, is also supportive of bowing or occasional embedded supercell
features. Given the strong buoyancy and shear, some potential for
primarily damaging gusts and perhaps a brief tornado remains this
evening. With time, the increase in nocturnal inhibition and the
tendency for outflow to undercut these storms should end the severe
threat.

..Lyons.. 06/11/2026

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

ATTN...WFO...ILX...LSX...DVN...EAX...

LAT...LON   39829329 39899349 40099352 40289337 40349268 40649096
            40489004 40148998 39749130 39729192 39769297 39829329 

MOST PROBABLE PEAK TORNADO INTENSITY...85-110 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN

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https://www.spc.noaa.gov/products/md/md1080.html