934
ACUS03 KWNS 030849
SWODY3
SPC AC 030848

Day 3 Convective Outlook CORR 1
NWS Storm Prediction Center Norman OK
0348 AM CDT Wed Jun 03 2026

Valid 051200Z - 061200Z

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM CENTRAL AND
EASTERN NEBRASKA INTO IOWA...SOUTHERN MINNESOTA...AND WESTERN
WISCONSIN...

CORRECTED FOR ERRONEOUS GEOGRAPHICAL REFERENCE

...SUMMARY...
Scattered severe storms capable of large to very large hail,
damaging winds, and perhaps a couple of tornadoes are expected
Friday afternoon into night across portions of the upper Midwest
into central Plains.

...Synopsis...

The primary upper-air feature of interest Friday is a short-wave
trough, which is forecast to amplify while progressing from the
northern Plains into the upper MS Valley and upper Midwest. A cold
front associated with at upper-air system is expected to stretch
from the upper Midwest through the mid MO Valley into the central
High Plains by mid afternoon. That boundary is expected to serve as
the focus for strong to severe thunderstorm development from
afternoon into Friday night.


...Upper Midwest into the Central Plains...

Areas of thunderstorms may be ongoing Friday morning across parts of
the Midwest and possibly northern Plains, with that activity
expected to decrease in areal coverage through the morning. However,
residual cloudiness and convective outflow may slow the
destabilization process in areas where the storms linger the
longest. Outside of those areas, model guidance indicates the
development of moderate to strong instability within the pre-frontal
warm sector by mid to late afternoon.

Height falls/forcing for ascent associated with the migratory
short-wave trough coupled with low-level convergence along the
synoptic front and any remnant outflow boundaries are expected to
contribute to an areal increase in storms during the afternoon and
evening hours. An associated risk for at least isolated severe
weather appears possible in parts of the northern and central Plains
into the upper Midwest and upper Great Lakes region. Within that
broader envelope, a potentially more concentrated zone of severe
storms may materialize in the vicinity of the synoptic front from
parts of western WI and southern MN into central and eastern NE.
There, a favorable overlap of 30-40 kt of deep-layer shear and the
moderate to strong instability is forecast to develop, supporting
organized storm modes capable of mainly large to very large hail and
damaging wind gusts. Some increase in low-level shear is forecast
across the mid MO Valley Friday evening, conditionally supporting
some tornado risk.

..Mead.. 06/03/2026

$$