Meteor Apocalypse

Meteor Apocalypse is a 2009 American science fiction film directed by Micho Rutare.

The story follows David Dmatti Joe Lando as he searches for his wife Kate Claudia Christian and sick daughter Allison Madison McLaughlin. They were initially quarantined in the Las Vegas Valley. David, finds and revives Lynn Cooper Harris at a gas station and brings her with him to Las Vegas.When they arrive, they learn most of the city was destroyed and the quarantined were transferred to Los Angeles. David is also able to get an antidote for the mysterious illness. When it is discovered that the largest comet fragment will most likely hit Los Angeles, a panicked evacuation is begun. The problem is the quarantined are left behind. While trying to rescue Davids family, Lynn dies, leaving enough antidote for Davids daughter. He and his family are soon reunited, just as the final fragment strikes the city. ........

Source: Wikipedia