Conditions favor Gulf Coast and Midwestern refineries over those based on the East and West coasts.

Juan Flores, an environmental organizer, gives “toxic tours” in Galena Park, Texas. It sits in the shadow of the U.S.’s largest petrochemical complex.

U.S. refineries, which are concentrated on the Gulf Coast, could be especially impacted by destructive storms, prodding prices up.

Why? It’s called the crack spread.

The idea is drawing attention, but analysts disagree on whether White House pressure on the industry would work.