It’s hard to know if this is the real deal, but the National Weather Service thinks it is:

The Ice Storm Warning is now in effect from 6 PM this evening to
6 am CST Friday.

Freezing rain is now expected to develop by early evening and
continue through tonight. Significant ice accumulations are
expected… ranging from between one and two tenths of an inch
near Interstate 80… to near an inch near the Iowa Missouri
border. The freezing rain will become mixed with or change over
to sleet later tonight… with sleet accumulations from a quarter
to half inch possible mainly near Interstate 80. To make matters
worse… there is also the potential for an isolated thunderstorm
or two. If this occurs… ice accrual will occur at a much faster
rate.

An Ice Storm Warning means severe winter weather conditions are
expected or occurring. Significant ice accumulations will make
travel dangerous or impossible. Travel is strongly discouraged
later today and tonight. Commerce will likely be severely
impacted… with widespread power outages. Ice accumulations and
increasing winds by early Friday morning will likely lead to
snapped power lines and falling tree branches that add to the
danger.

Radar between 3 and 4 pm