According to the Storm Prediction Center, there's a 60% chance that a watch could be issued for the area highlighted in yellow.
Ahead of an advancing cold front, a few widely scattered showers and thunderstorms have popped up along and south of the Illinois & Wisconsin border. As we carry on into the late afternoon and evening hours, storms may pose a risk for gusty winds, heavy downpours, and frequent lightning.
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3:30PM Update - Watch Issued:
A Severe Thunderstorm Watch has been issued for McHenry, Dekalb, and Lee County until 10PM tonight. Due to the fact that these counties are on the northern edge of the watch, I think much of the action will end up happening to our south and east. However, storms will still pose a threat for gusty winds, large hail, and frequent lightning!
Thunderstorms this evening continue across portions of central Illinois, northern Illinois, and the southern half of Michigan. Since the Stateline hasn't seen much over the last or so, the National Weather Service in Chicago has decided to cancel the Severe Thunderstorm Watch for McHenry, Dekalb, and Lee County.
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Overnight Forecast:
While a few isolated thunderstorms remain possible early this evening, the rest of the night looks to stay quiet under partly cloudy skies. Once the cold front is fully through the region, our surface winds look to take a turn to the northwest, allowing for a somewhat cooler and less humid air mass to settle in by Sunday morning. Temperatures overnight will end up falling into the mid to upper 60s, a good 5° to 10° cooler compared to what we woke up to Saturday morning. Now, even with this evening's cold front passage, Sunday will be just as hot with afternoon highs landing in the 90s.
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