Hurricane Isaias forced operators to shut in roughly 63% of U.S. Gulf of Mexico crude production ahead of an expected landfall late Friday or early Saturday, removing about 1.3 million barrels a day from a market that has spent the past two weeks pricing in Middle East supply risk and has almost no spare refining capacity to absorb another shock.
The U.S. Energy Information Administration said offshore operators had also curtailed roughly 1.1 billion cubic feet a day of natural gas output and evacuated or relocated about 130 platforms and rigs. Federal offshore regulators put the shut-in figures at approximately 1.28 million barrels a day of oil and 57% of regional gas production, with workers pulled from 121 staffed facilities — about a third of the Gulf's total.
NOAA said as of 4 a.m. central time Friday that it "expects Hurricane Isaias to make landfall on the Gulf Coast late Friday or early Saturday." The storm strengthened into a Category 3 system Friday with sustained winds near 120 mph. It is the first hurricane of the 2026 Atlantic season and, per the EIA, the largest storm system to make landfall in the region since Hurricane Helene in September 2024.
Refineries Dodge the Worst of the Track
The more consequential question for fuel prices was always refining, not production. Gulf Coast refineries have been running at roughly 95% utilization, leaving no headroom in the system if a major plant goes down.
Isaias's projected path carried it east of the dense refining corridor in southern Louisiana. The facilities inside the hurricane warning area — Chevron's refinery in Pascagoula, Mississippi, and Vertex Energy's plant in Saraland, Alabama — have combined capacity of about 466,000 barrels a day, or 2.4% of national refining capacity. Chevron spokesperson Ross Allen said Thursday that the Pascagoula refinery remained operational.
AAA, which had flagged the storm as a threat to Gulf production and refining earlier in the week, said that risk was easing as the track shifted away from Louisiana with lower expected rainfall and weaker winds.
Pump Prices Still Set an October Record
Drivers are not getting much relief regardless. AAA put the national average for regular gasoline at $4.36 a gallon Thursday, down about five cents from a week earlier but up roughly 39% from $3.12 a year ago. It is the first October on record in which the national average has held above $4. The September monthly average of $4.33 came in 50 cents above the prior September record of $3.83, set in 2023.
Diesel remains the tighter market, averaging around $6.27 a gallon — up about 72% year over year. State averages range from $6.34 in California to $3.71 in Ohio.
EIA weekly data showed gasoline demand rising to 8.76 million barrels a day from 8.68 million, while refinery gasoline production slipped to 9.34 million barrels a day from 9.46 million. Gasoline inventories stood at 204.7 million barrels and crude stocks at 424.1 million barrels, about 1% above the five-year average.
Brent Leads, WTI Lags
Crude's reaction split along the usual storm lines. Brent moved past $103 a barrel Friday — a two-week high — and traded near $104 late in the session, while U.S. benchmark WTI held closer to $91.60, widening the transatlantic spread well past $12. A hurricane subtracts U.S. barrels but also subtracts U.S. refining demand for them, which tends to cap the domestic grade.
Offsetting the storm premium were reports that President Trump described discussions with Iran as productive and signaled Washington would hold off on strikes before the midterms, which had briefly pulled both benchmarks lower.
Stocks Cap a Volatile Week Higher
Equities ended the week on firmer footing as crude's earlier spike faded and the AI trade stabilized. The S&P 500 closed at 7,811.54, up 46.18 points, or 0.59%. The Dow Jones Industrial Average added 423.31 points, or 0.83%, to 51,654.95, and the Nasdaq Composite rose 172.83 points, or 0.64%, to 27,366.17.
Humana was among the day's biggest gainers after an improved Medicare Advantage rating and an analyst upgrade. Delta Air Lines fell following a guidance cut. Telecom shares extended a second session of losses after SpaceX agreed to pay Grain Management $8 billion for a nationwide 800 MHz spectrum portfolio — up to 14 megahertz of paired spectrum — adding to the 65 megahertz it has acquired from EchoStar in deals totaling $19.6 billion, and raising the prospect of a fourth national wireless competitor.
Sources: U.S. Energy Information Administration ("Today in Energy," Oct. 9, 2026); AAA gas price reports and newsroom releases; NOAA; NPR; CNBC; OilPrice.com; Trading Economics commodity data; Yahoo Finance market data.