We'll see multiple rounds of showers and storms over the next 48-60 hours, starting with just a few stray showers this evening and overnight. However, I expect more rain to be possible by tomorrow morning, especially near and south of I-74.
More showers and storms will be possible by tomorrow afternoon and evening. Some storms may produce locally heavy rain and gusty winds at times.
Our best rain chances tomorrow will likely come during the evening hours and into tomorrow night.
Over the next couple of days, Saturday will represent our best rain chance. Saturday also represents our best chance for any severe weather as a strong cold front will be approaching from the west.
Right now, it looks like the best chances for severe weather will come Saturday afternoon and evening. I would say that 2-9 PM looks like our best window for severe weather, but we will fine-tune that forecast as needed heading into Saturday.
An isolated strong or severe storm can't be completely ruled out later in the day on Friday or during Saturday morning, but the best combination of warm air, moisture, instability, and wind shear will be present ahead of the cold front later in the day on Saturday.
I think that high winds and large hail will be the main hazards within any strong or severe thunderstorms tomorrow and Saturday. However, given the ample amounts of wind shear that will likely be present on Saturday, including some turning of our low-level winds, a tornado threat can't be ruled out.
With severe weather chances in the forecast, now would be a good time to make sure you are prepared for severe weather. Make sure you have ways to get any warnings that are issued, such as purchasing a NOAA weather radio and downloading our Heart of Illinois ABC app.
Heavy rain will also be possible within any thunderstorms over the next two days. I think this forecast model could be overdoing some of these totals slightly, but upward of 1-2" of rain could be possible between now and Saturday evening.
Storm Team ABC will continue to have the latest updates on-air, online, and on social media.