Oil prices climbed in volatile trading Wednesday as renewed Middle East supply concerns outweighed pressure from plans to accelerate releases from global emergency reserves.
Brent crude futures for December rose 0.7% to $100.91 a barrel by 15:41 ET, while November West Texas Intermediate (WTI) crude gained 0.7% to $88.86.
Crude prices initially advanced as attacks on vessels in the Strait of Hormuz increased and fighting intensified between Iran-backed Houthis and Yemen’s Saudi-backed government. The market remains caught between improving regional oil flows and persistent risks of fresh disruptions.
Brent had dropped to $97.06 on Tuesday before recovering above $100 after UK Maritime Trade Operations data showed increased Iranian attacks on ships traveling through the Strait of Hormuz. Iranian state media also reported Wednesday that the strategic waterway would remain closed until Tehran’s demands were met.
Additional supply concerns emerged from a potentially major Atlantic storm approaching U.S. energy-producing regions. Forecasters said the system could become the first Atlantic hurricane of 2026 and potentially threaten areas responsible for about 15% of U.S. crude oil production and 5% of natural gas output.
However, oil prices pared gains after International Energy Agency members agreed to accelerate the release of emergency stocks. The IEA said completing a previously announced 400-million-barrel release could bring around 100 million barrels to the market.
The agency said its members still hold approximately 1.1 billion barrels of publicly controlled emergency oil inventories, including more than 200 million barrels of diesel. France separately announced plans to release 10 million barrels of diesel as refined fuel prices remain elevated globally.
Supporting crude prices, U.S. commercial oil inventories excluding the Strategic Petroleum Reserve unexpectedly fell by 3.2 million barrels during the week ended October 2 to 424.1 million barrels. Analysts had expected a 1.9-million-barrel increase.
Total U.S. inventories, including the SPR, declined by 4 million barrels to 707.1 million, their lowest level since December 1983. Strategic Petroleum Reserve stocks fell by 800,000 barrels to 283 million barrels.


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