City, County and State crews have been working hard overnight to clear the roads for the morning rush. While most major school districts in the St. Louis area have already canceled class for today, St. Louis city crews are confident the roads will be in good shape by sunrise. Thursday's winter storm dumped as much as 6" of sleet and snow across the metro-area, leaving drivers stranded and emergency crews busy through-out the day.
As of 4:30am, most major roads in the St. Louis metro area were clear, although exit and entrance ramps seemed to be trouble spots, as well as portions of I-270 North of I-64 in St. Louis County.
The winter storm that blanketed most of Missouri with snow and ice included a rare feature - thunder.
The phenomenon, known as "thundersnow," is extremely rare and is caused by instability in the atmosphere. It happens when the ground is warm, but air in higher parts of the atmosphere is much colder. It also requires strong wind to push the warm air up and create the instability that results in thundersnow. A University of Missouri climatology study shows that between 1961 and 1990 only 191 cases of thundersnow were reported.