• Midwest gasoline inventories fell to a record low of about 41.8 million barrels in the week ended September 25, down 1.8 million barrels.
  • Nationwide gasoline stocks dropped to 204.4 million barrels, the lowest since November 2014, as refinery activity slowed.
  • The shrinking supply cushion leaves the region vulnerable to price spikes from any refinery or transport disruption, with diesel also under pressure.

Regional Supply Crunch

Midwest gasoline inventories have plunged to their lowest level on record, according to data from the Energy Information Administration (EIA), intensifying concerns about fuel availability in a region already grappling with tight global energy markets. The EIA reported that stocks in the Midwest fell to approximately 41.8 million barrels in the week ended September 25, 2026—the lowest since the agency's regional series began in December 1989. The decline of 1.8 million barrels marked a second consecutive weekly draw.

The drop comes as national gasoline inventories also fell to 204.4 million barrels, down 1.7 million barrels and the lowest since November 2014. The drawdown reflects reduced refinery activity: crude processing nationwide fell by 554,000 barrels per day, and refinery utilization declined 1.5 percentage points to 92.5%.

"The Midwest is running on fumes," said one energy analyst who requested anonymity to speak freely. "Any hiccup in the supply chain could send regional prices soaring."

Refinery Slowdown and Global Pressure

The inventory decline was driven in part by weaker refinery runs in the Midwest, according to industry reporting, though the sources did not identify a single facility as the cause. The EIA's September 30 report showed a broad national slowdown in crude processing, but the regional impact has been more acute.

Meanwhile, global fuel markets remain tight. In its October 6 outlook, the EIA raised its fourth-quarter Brent crude forecast to about $105 per barrel, $14 above its previous estimate, citing falling global stocks, constrained Middle Eastern flows, and exceptionally tight diesel supplies. The U.S.-Israeli war with Iran has disrupted oil movements through the Strait of Hormuz, and the EIA assumes those flows remain constrained through the end of the year.

The supply squeeze is not limited to gasoline. Diesel is also under pressure; the EIA expects U.S. retail diesel to remain above $6 per gallon in October, a burden for trucking and agriculture. National regular gasoline averaged $4.354 per gallon for the week ending October 5, according to EIA data, though this is not a Midwest-specific price.

Regulatory and Political Response

The EPA has already taken steps to ease supply constraints. On August 20, it used temporary Clean Air Act fuel waivers to expand ethanol-blending flexibility and brought forward winter gasoline volatility limits to September 1. These measures preceded the September 25 inventory reading and were not announced specifically in response to it.

"We are monitoring the situation closely and will use all available tools to ensure adequate fuel supply," an EPA spokesperson said in an emailed statement, without providing further details.

Historical Echoes and Outlook

The current situation echoes the summer of 2024, when severe weather shut ExxonMobil (XOM)'s Joliet refinery and temporary outages hit Cenovus (CVE) facilities in Ohio. Midwest refinery utilization fell to 86%, and gasoline stocks hovered near 46 million barrels through August 9. Chicago retail gasoline prices reached a 23% premium over the national average on July 29. That episode resolved as refineries returned, with utilization reaching 97% and inventories rising 1.3 million barrels in the week ending August 16. The current 41.8-million-barrel reading is below the level seen during that disruption.

In the short term, the key question is whether refinery production and incoming supplies can rebuild the Midwest buffer. Previous experience shows that restarts can replenish inventories, but continued operational weakness would leave prices more sensitive to further disruptions.

Longer term, the EIA expects international oil flows and inventories to recover gradually, forecasting Brent at an average of $84 per barrel in 2027—still $10 above its previous forecast. The agency also raised its expected national average gasoline price to $3.91 per gallon for 2026 and $3.56 for 2027.

East Coast distillate inventories were 32% below their five-year seasonal average in September, and shortages are expected to persist through winter. International supply adaptation, including Saudi pipeline shipments and ship-to-ship transfers, has helped restore some Gulf oil flows, but risks remain.

This is a regional commodity-supply story, not a company announcement, and the EIA's next weekly release is scheduled for today, October 7, 2026. This briefing does not assume its results.