Hurricane Isaias has driven up crude prices along the U.S. Gulf Coast. The U.S. Bureau of Ocean Energy Management (BOEM) stated that the hurricane's arrival has caused roughly 72% of the region's crude oil production to be suspended.

The U.S. Bureau of Ocean Energy Management said on Friday that producers have shut in approximately 1.46 million barrels per day of crude output, accounting for 72% of the region's total crude production. As of 12:00 noon Eastern Time, personnel had been evacuated from 129 offshore platforms, and two dynamically positioned drilling rigs had moved out of the storm's path.

As the hurricane approached, BP shut in production at its Thunder Horse and Na Kika platforms and evacuated non-essential personnel from the Argos, Atlantis, and Mad Dog platforms.

Hurricane Isaias strengthened to a Category 3 storm as it approached the U.S. Gulf Coast. The storm has disrupted U.S. offshore crude supply, while the Iran war had already upended global oil trade routes.

Nearshore Crude Prices Rise

The production cutback is directly reflected in Gulf Coast crude spot prices.

Mars crude is currently trading at a premium of about $3 per barrel to WTI, having been at a discount earlier in the week.

Thunder Horse crude has held a premium of more than $4 per barrel to WTI for two consecutive trading days, widening sharply from 75 cents at the start of the week.

The Southern Green Canyon discount to WTI has narrowed to $3.75 per barrel, compared with a discount of as much as $8 per barrel at the end of last month.

The rapid correction of these spreads indicates that the market has priced in the tightening of physical crude supply in the Gulf relatively quickly.

Surging Freight Rates Erode Export Economics

Meanwhile, the export outlook for U.S. crude is being suppressed by soaring freight rates.

According to Baltic Exchange data, chartering a Very Large Crude Carrier to ship U.S. crude to Asia currently costs about $79 million, equivalent to roughly $39.50 per barrel (based on a 2-million-barrel cargo), compared with an average of only about $9.2 million so far in 2025 — a difference of more than eightfold.

The sharp climb in freight rates stems from the impact of the Iran war on Middle East shipping patterns. Although Middle East crude flows have recovered somewhat in recent weeks, shipping complexity remains far higher than pre-war levels, with a large number of tankers trapped on longer circuitous routes, further driving up global shipping capacity costs.

High freight rates mean the economics of shipping U.S. crude to Asia have been substantially weakened, putting export demand under pressure. Against this backdrop, the nearshore production losses caused by the hurricane have objectively reduced the accumulation of barrels that were already struggling to find overseas buyers, thereby providing a certain floor for nearshore crude prices.