A literal wall of dust blowing through the Chicago area could quickly drop visibility to almost zero as the dust storm blows through.

It was the first time the city had seen a dust storm since May 10, 1934, which was during the first wave of the Dust Bowl. Friday's storm was carrying dust picked up from farms in central Illinois, and raced north toward the Chicago area.

Storms are possible between 4 and 9 p.m., and large hail is the main threat, ABC7 Chicago meteorologists said. The tornado threat is low, but not zero. Much of the Chicago area is under a Level 3 threat of severe weather. The far south and southwest suburbs are under a Level 2 risk.

At least 21 people were killed in Kentucky and Missouri after storms and reported tornadoes tore through the region as part of an extreme weather outbreak on May 16, "leaving behind a trail of destruction,