Weather Word: Critical Thickness

Critical Thickness is used in winter weather forecasting to define the line between rain and snow falling in a certain region.

Current Dewpoints by region:

In Illinois:

NE: 58-60
NC: 58-60
NW: 58-60
C: 64-70
EC: 64-70
WC: 64-70
In Indiana:

NW: 58-62