CHICAGO -- By Wednesday night, you'll know whether the stronger, faster computers of today are any better at predicting severe storms than the weather balloons and pen on paper used in the old days.
The same advanced computer software and satellite images have been tracking this storm's movement since it churned off the coast of Los Angeles late last week.
The brunt of the massive storm sweeping in from the south was expected to bring high winds and inches of snow, including as much as two feet in parts of Chicago
If you're among those who said, "I'll believe it when I see it," you're in good company.
The unpredictable nature of severe storms has always made weather predictions a bit of a guessing game. On Jan. 26, 1967, the forecast was for four inches of snow in Chicago. The city got 23 inches. On Jan. 13, 1979, the forecast again was for four inches, but 18.8 inches of snow fell. On Jan. 1, 1999, the forecast was for six inches of snow, but the city got 21.6 inches.