This video depicts the repetitive systems that will continue to propagate across the Central Plains and into the Midwest and Mississippi Valley Tuesday and Wednesday. The two next colorful graphics illustrate the amount of CAPE and negative Lifted Index that prove as substantial ingredients for convection and potentially severe thunderstorms. These two graphics specifically depict the ingredients that will be present Tuesday evening and in areas where the two ingredients overlap we will likely see thunderstorms as they follow along an advancing cold front.
In Champaign-Urbana on Tuesday temperatures will remain at record heat with a high of 85°F and a low of 54°F. We’re also in store for some possible scattered showers and spotty thunderstorms during the late afternoon that have the potential to continue on throughout the evening and into early Wednesday morning. However, before Tuesday’s possible storms we will see mostly sunny to partly cloudy skies and SE winds turning SW with speeds between 6-13 mph. Come Wednesday, we won’t need to turn on the air conditioning as the high is likely to only reach 69°F, while the low may get down to 46°F. Wednesday will remain mostly sunny, but we may see some isolated thunderstorms and showers developing during the evening hours. In addition, winds will be from the NE at 9-16 mph.
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