A cold front approached the region from the west, preceded by a squall line.

It was part of a longer squall line that resulted in significant damage and many injuries along with one death.

There were also reports of significant wind damage from a related squall line.

Note that most of these tornadoes were not associated with squall lines.

It was part of a severe weather situation from a squall line that moved into Ohio.

A black squall line was making its way across the inland sea.

And that row of thunderheads is called the squall line?

It is the most damaging squall line ever recorded in Cuba.

"We're going to take off before that squall line gets here," the pilot said.

The dark wall forming the squall line was now directly ahead.