National Weather Service United States Department of Commerce

Heat Persists in the South Central U.S. and California; Heavy Rain in the Ohio Valley

Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley, as well as in the Southwest and California this week with limited nighttime relief. Heavy rainfall will lead to localized areas of flash flooding in parts of the Ohio Valley/Central Appalachians. Dry and breezy conditions will enhance fire weather concerns across the northern Rockies and High Plains. Read More >

The cold front will continue to slip south this evening, resulting in overnight lows still around 70 degrees across most of the area. Rain chances will be highest near and south of I-72/Danville tonight into Thursday morning. After a dry Friday, scattered showers and storms will again be possible this weekend, mainly north of I-72/Danville.
The heavier rain from this storm system is expected to remain focused over areas south of I-72/Danville overnight and Thursday, where a half to 1 inch is most likely. However, this area does have a 50-70% chance of seeing more than an inch of rain. Areas from Macomb to Lincoln to Champaign and Danville north should only see an additional tenth inch or less of rain tonight and Thursday.
The threat of any strong to severe storms today will mainly be from mid afternoon into early evening. This is most likely in southeast Illinois ahead of a cold front, and a level 1 risk of severe weather continues in this area. Any severe weather would likely be in the form of brief damaging winds.