9:30pm Update: A line of thunderstorms continues to move through Ogle and Lee counties this morning, producing mostly heavy rainfall. Some of the stronger cores will be capable of small hail, along with frequent lightning and a stronger wind gust or two. These storms are currently moving to the northeast around 25-30 mph.
Non-severe thunderstorms will continue to move across northern Illinois and southern Wisconsin Sunday morning. Biggest threats with the morning activity will be heavier downpours and lightning. A wind gust 30-40 mph will be possible but severe weather is not expected this morning. This scattered activity will last through lunchtime (12pm/1pm).
As the morning thunderstorms move out, skies may try to clear some through mid-afternoon. A warm front displaced well south of the region will make a slow trek back north, but likely fall shy of reaching the Stateline. This will be a key player in thunderstorms redeveloping locally later this afternoon and evening.
There does remain a risk for a few stronger to severe storms this afternoon, but the strength of the storms depends on just how much our atmosphere is able to destabilize later today. With some clearing possible, we could see some isolated thunderstorm activity try to develop around 3pm/4pm. The greatest threat for any significant severe weather will remain further downstate where better instability and wind shear will take place.
If we do see thunderstorms redevelop this afternoon our greatest threats would be damaging winds and hail, with an isolated tornado risk. Again, any storm development later today will depend on how fast our atmosphere is able to recover following the storms this morning. There are some indications that at least some destabilization will occur.
If you're planning on being out and about at any point during the day, make sure you are checking
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