NOTE: Have your weather radio programmed and ON today!
The area highlighted here is where we are watching for isolated strong thunderstorm development through early evening. While there have been a few small showers, the blanket of clouds on satellite are preventing any storms so far. Things may still change into early evening though, so we will keep monitoring, but the trend is pointing toward a gradually diminishing severe threat there.
For south of I-80, there is potential for a few severe storms overnight
We are continuing to monitor the potential for a few strong to severe thunderstorms late this afternoon into this evening (5pm-10pm timeframe), primarily for locations roughly northwest of a Dixon to Crystal Lake line.
Whether storms manage to develop here at all remains uncertain, but *if* they do, they could quickly become severe with a threat for large hail and a tornado can’t be ruled out. Storms would move off towards the northeast or east-northeast at around 35 mph.
The next round of strong to severe thunderstorm potential will be overnight tonight into early Thursday morning south of I-80.
There is a threat for strong to severe thunderstorms this afternoon and evening. The main area we’re monitoring is roughly north of I-80 and west of an Ottawa to Crystal Lake line this afternoon. Whether or not storms manage to develop here remains uncertain at this time, but if they do, they would have the potential to quickly become severe with a threat for large hail and a tornado or two. Any storms would move off towards the northeast around 35 mph.