# [24H] US Midwest Diesel Basis Widens as Exxon Joliet Outage Hits Trucking and Agriculture

*Issued Tuesday, September 15, 2026 at 12:03 AM UTC — Hamer Intelligence Services Desk*

**Issued**: 2026-09-15T00:03:32.580Z (5h ago)
**Expires**: 2026-09-16T00:03:32.580Z (19h from now)
**Category**: ECONOMIC | **Confidence**: 76% | **Impact**: HIGH
**Risk Direction**: escalatory
**Affected Regions**: US Midwest, Upper Midwest, National US diesel market
**Affected Assets**: US diesel futures and cracks, Freight and logistics equities, Agricultural producers in Corn Belt, US CPI energy components
**Permalink**: https://hamerintel.com/data/forecasts/24937.md
**Source**: https://hamerintel.com/forecasts

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## Prediction

In the next 24 hours, the shutdown of Exxon’s Joliet refinery will widen diesel basis and rack prices in the US Midwest and Upper Midwest, where alternative supply is constrained, while national averages creep higher from already elevated levels above $6 per gallon. Trucking firms, rail operators, and farmers will confront immediate cost pass-throughs, feeding into inflation expectations and potentially forcing some companies to adjust freight surcharges or service levels. Markets will begin repricing US inflation and Fed policy risk if energy futures respond sharply. Confirmation would be documented basis blowouts at Chicago and Group 3 hubs and visible fuel price spikes at regional terminals; denial would be rapid partial restart news or aggressive resupply from Gulf Coast and imports limiting local scarcity.

## Drivers

- Exxon Joliet refinery shutdown after power outage cutting ~11 million gallons per day of fuel output
- US diesel prices already above $6 per gallon before outage
- Joliet’s role as a key Midwestern hub for trucking and agriculture fuel
- Energy markets’ sensitivity to any additional supply shocks alongside global crude disruptions