Southward-moving band of strong to severe storms approaching Illinois-Wisconsin state line
Update 4:55AM CDT…
The band of showers and isolated thunderstorms continues to slowly
weaken as it pushes south of Interstate-80 early this Sunday morning
Activity is expected to strengthen during the afternoon heating hours
mainly south of Interstate-80 and continue into central Illinois. Clear
skies area-wide are forecast for Sunday night.
A band of strong to severe thunderstorms continues to push south
through southern Wisconsin just before Midnight. Damaging winds and
large hail are possible in the strongest storms.
Indications are the storms will begin to weaken as they enter northern
Illinois between Midnight and 1AM. However a few individual
cells might still produce winds in excess of 50 miles per hour and hail an
inch or so in diameter.
Below is a summary Prepared by the National Storm Prediction
Center. The Severe Thunderstorm Watch for southern and central
Illinois is set to expire at 1AM CDT.
The severe weather threat for Severe Thunderstorm Watch 416
SUMMARY…Threat for a couple of strong to severe wind gusts will
persist through 05Z or 06Z, followed by a diminishing trend.
DISCUSSION…Broken line of multicell storms continues south through
southern WI at around 20 kt. Potential for a few strong wind gusts
will remain during the next hour or so as storms move through
corridor of moderate instability. However, storms will encounter a
significant increase in convective inhibition as they approach the
IL border, resulting in a weakening trend by 06Z.
Latest Regional Weather Radar Mosaic…