Tweet: The jet stream helps drive our weather. Here, you can see a ridge in the West

The jet stream helps drive our weather. Here, you can see a ridge in the West where heat has been building and a large trough in the East, keeping the #weather unsettled. #PAwx #JetStream pic.twitter.com/8XXMmjX5m9

— Danielle Dozier WPXI (@DanielleDozier) July 25, 2018