Life on the Line is based on a deadly storm affecting electrical linemen , not on one single famous named storm. The film’s synopsis describes a Texas lineman and his crew risking their lives to keep the grid running during a severe storm.

What it’s drawing from

The movie is inspired by the real work of line crews who restore power in dangerous weather conditions. Public descriptions frame it around the hazards of extreme storm damage to the electrical grid rather than a specific hurricane or tornado.

In plain terms

So, if you were asking for the exact storm name, there doesn’t appear to be one in the available descriptions. It’s better understood as a dramatization of storm-response work during a severe weather event.

TL;DR

The storm is not identified by a specific name in the film’s public descriptions; it’s based on a generic deadly severe storm and the real dangers faced by linemen.