Peoria, IL – Parts of Central Illinois may see damaging winds, hail, and heavy rain Wednesday night as a cold front moves from the Central Plains and into the Midwest.
Storms will continue to develop along a cold front and will move in to Central Illinois overnight. Ahead of the cold front, moisture streaming north from the Gulf of Mexico will provide some instability for storms to feed on as they move into the region. Thanks to the jet stream overhead, strong wind shear will allow some of these storms to become strong to severe.
6 pm to 10 pm – Isolated Showers & Storms
10 pm to 5 am – Scattered Thunderstorms, Some May Be Severe
While a few isolated showers and storms are possible this evening, the best chance of showers and storms will arrive overnight as storms that developed along the cold front in Missouri and move into the region. A few of these storms may impact areas west of the Illinois River as early as 10 pm, but will be most likely after midnight. These are the storms that are also most likely to be strong to severe.
The primary threats will be damaging winds and large hail as a broken squall line moves through Central Illinois. Frequent lightning and heavy rain is also likely, through the flood threat should remain low since storms will likely be moving quickly. The risk of a tornado is low, but a brief spinup is possible.
The Storm Prediction Center has placed most of Central Illinois within a “Slight Risk” for severe storms tonight. The highlighted risk area (yellow) indicates the area where severe storms are possible. While most of the region will see storms tonight, only a few locations may experience severe weather. Based on hi-res modeling, it looks like the best chances for these storms locally will be along and south of I-74.