Oil tops $90 on Sunday’s Iran strike — September hike odds jump 20 points to 55%

Kevin Warsh left Jackson Hole without committing to September. The Strait of Hormuz committed for him.

A US military strike on Iranian rocket launchers preparing to mine the waterway ended weeks of relative calm over the weekend, sending Brent crude above $90 a barrel. By Monday morning, markets had repriced the probability of a Federal Reserve rate hike at next month’s FOMC meeting to 55.7 percent — roughly 20 percentage points higher than where it stood 48 hours earlier, according to CME Group’s FedWatch tool.

The Strait of Hormuz carries approximately 25 percent of the world’s maritime crude oil and 19 percent of its liquefied natural gas. The number that matters to the household is simpler: every sustained dollar added to the barrel eventually arrives at the petrol pump and the heating bill. In this sense, the military calculus of an overnight strike connects directly to what a family in Madrid, Mumbai, or Minneapolis pays for energy in the months ahead — and to whether the mortgage rate they are waiting to fall gets hiked instead.

Warsh had already set the tone. His Jackson Hole speech declared that the central bank might have “work to do” on inflation — deliberately ambiguous language that markets read as a conditional green light for tightening — while he declined to specify any meeting. The July FOMC vote had already split 9-3, with three members dissenting for a quarter-point increase, which means a single oil shock is not changing minds so much as providing the cover that the middle needs to move.

The counterargument deserves equal weight. Monetary policy is a demand instrument; the current price shock is supply-driven by a geopolitical conflict the Fed neither caused nor controls. A quarter-point hike at 3.75 percent while retail spending is declining and consumers are absorbing higher energy costs is a specific kind of economic judgment — one that risks slowing the very activity that is keeping inflation-adjusted wages above water. Several Fed-watchers argue Warsh is reading a supply-side shock as a demand signal, and that the resulting hike, if it comes, will be remembered as mistimed.

The corporate reality sits in between. Exxon posted second-quarter earnings of $14.5 billion and Chevron reported $12.1 billion — combined, roughly $160 million a day of profit as wartime crude lifted their results. Neither outcome is straightforwardly consumer-friendly, and Exxon’s chief executive flagged “challenging conditions” in refining margins, which is the part of the oil business closest to what drivers pay at the forecourt.

Two data releases now determine whether September sees a hike. The August jobs report lands on September 5 and August CPI arrives the following week — both before the FOMC window closes. If the labor market holds and inflation prints above expectation, the oil shock will simply have been the moment the math settled. If either weakens, the 55 percent probability will look like a spike in search of a catalyst.

The FOMC meets September 15-16. The oil market has already voted.

Tags: Federal Reserve, Kevin Warsh, oil prices, Strait of Hormuz, Iran conflict, rate hike