The trucking industry is being disrupted by Hurricane Harvey, and will be for a month or more. The fierce storm has left flooded and damaged roads, downed powerlines and other wreckage in its wake.

Harvey made landfall this past weekend near Houston, and is still lingering as a tropical storm expected to dump as much as three feet of rain in some areas this week. Experts say Harvey will strongly affect more than 10 percent of all U.S. trucking this week and 7 percent next week. After a month, the storm’s impact on trucking will have lessened considerably nationally, but, but the damage it leaves still is projected to hamper operations at about a quarter of the trucking operations in the affected Gulf Coast region.

Because Texas is home to about 30 percent of U.S. oil refining capacity – much of it centered around Houston – production of diesel fuel and other petroleum products is expected to be especially hard hit, according to an FTR analysis.

Houston also is a major intermodal shipping site and the storm may have a persistent impact on rail shipments as well as on trucking.