The closure of the Strait of Hormuz — the narrow waterway connecting the Persian Gulf to global shipping lanes — has created an oil supply disruption without modern precedent, with cascading consequences for energy markets, global transportation logistics, and household energy costs that are now rippling through every layer of the U.S. economy.
Before the war that commenced on February 28, approximately 20% of global crude oil and liquefied natural gas supply transited the Strait daily, representing roughly 21 million barrels of oil equivalent per day. Since Iran's closure of the waterway in the opening days of the conflict, that flow has been completely interrupted. TD Securities estimates that by month-end, the cumulative supply loss will reach approximately 600 million barrels of crude oil and 350 million barrels of refined petroleum products — bringing the total disruption to approximately one billion barrels of oil equivalent.
The market pricing of this disruption is stark. WTI crude climbed to $112.41 per barrel on Tuesday, a 66% increase from the $67.70 pre-war level on February 27. International benchmark Brent crude settled at $109.77 per barrel. The national average gasoline price reached $4.11 per gallon on Sunday according to AAA, a 38% increase from $2.98 before the war. Diesel prices have surged to $4.87 per gallon, adding embedded inflationary pressure to freight transportation and logistics costs across every retail category.
The International Energy Agency, which has released record volumes from strategic petroleum reserves to cushion the supply shock, has signaled that strategic reserve capacity is approaching its practical operational limits and cannot substitute for normal market flows indefinitely. The IEA warned that a sustained closure beyond 90 days risks permanent demand destruction in the most price-sensitive consuming nations, creating a structural realignment of global energy trade routes that could take years to fully normalize even after the Strait reopens.
The Federal Reserve Bank of Dallas published a research note estimating that a 90-day Strait of Hormuz closure would likely cause a 2.9% quarterly decline in U.S. GDP — the equivalent of a severe recessionary contraction. The combination of oil-driven inflation and slowing economic activity presents the Federal Reserve with a stagflation dilemma for which conventional rate policy offers limited solutions. Wells Fargo Investment Institute acknowledged this dynamic on Monday when it eliminated its forecast for any Federal Reserve rate cuts in 2026, stating the balance of risks had shifted decisively toward patience.
Goldman Sachs commodity analysts issued a note Tuesday projecting WTI could reach $130 per barrel if the Strait remains closed through the end of April, triggering a second leg of CPI inflation acceleration that would appear in the May data release. Energy sector equities have broadly outperformed the market, with exploration and production companies, integrated oil majors, and oilfield services firms all posting significant year-to-date gains. The Philadelphia Oil Service Index has risen approximately 35% since February 28, reflecting the direct operational benefit that elevated oil prices and increased North American drilling activity deliver to services sector margins.