Sunday, May 6, 2012

Severe Weather Impacting Illinois

Radar from RadarScope App
Severe thunderstorms are popping up in west central Illinois at this time, with a few severe thunderstorm warnings and even a tornado warning being issued with the cells to the northwest of Peoria, Illinois.
A section of higher dewpoints and temperatures are evident in the area where these storms are, and as long as that fuel is in place, these storms will have no problems staying strong to severe.


Flash Flooding Possible Overnight Tonight in North Illinois

There is a risk of flash flooding tonight over North Illinois as light winds and consistent rains may very well produce slow moving storm cells that could easily put down 1 inch or more.

Winds are expected to eventually calm down to the point that any storms that form would move very slowly in this environment. Adding to the risk of flooding is how much water may be in the air, with upwards of 1.5 inches of precipitable water possible.
Keep in mind that storms are isolated and there are indications that this may happen farther south. However, seeing as information from some NWS offices differ, I will keep this as is and watch for areas further south.

Severe Weather To Strike Today in Midwest, Plains

There is a risk of severe weather for the Midwest, eastern Plains into the Southern Plains.

Current radar imagery suggests strong storms ongoing across southern Wisconsin and in Iowa, with small, pop-up cells now developing in north central Illinois. These storms are likely the result of some interaction with the atmosphere from strong storms up in Wisconsin that may have produced an outflow boundary or something to trigger the storms.
The SPC NAM is telling of these current storms rolling through around noon and then leaving, with heavy rain developing overnight across the same areas.

I will have more later on.