At 303 PM, fire department reported a funnel cloud near Petersburg
in Menard County.
Atmospheric conditions exist that favor the possible formation
of cold air funnel clouds. These occur in vertically developed
clouds, which usually are not associated with thunderstorms.
They may persist for an extended period before dissipating.
Low hanging clouds can also appear to dip up and down at times,
but they will not show signs of any rapid rotation. An actual
funnel cloud will exhibit spinning in a counter-clockwise direction.
In rare instances these funnels may briefly touch down. Stay alert
and be prepared to move to a safe shelter if a funnel cloud
approaches the ground.