Hormuz Oil Flows Collapse 59 Percent to 5.1 Million Barrels Per Day as Brent Tops $90 in Asian Trading

Oil tankers are transiting the Strait of Hormuz at a two-month low after Iran's IRGC Navy intercepted four vessels over the weekend and cut the waterway's crude throughput from 12.5 million barrels per day to 5.1 million barrels per day in just one week. That 59 percent collapse drove Brent crude futures above $90 per barrel in early Monday trading in Asia and London, the highest level since mid-June, per Rigzone market data published July 20, 2026. Brent eased to $88.61 per barrel as of approximately 09:14 EDT on July 20, up 0.58 percent on the session, per OilPrice.com citing ICE front-month contracts. WTI crude futures stood at $82.57 per barrel, up 0.10 percent on the day.

Iran Quits Military Ceasefire and IRGC Issues Explicit Total-Closure Threat

Iran's government announced on Saturday, July 19, that it was withdrawing from a 60-day military ceasefire agreement with the United States. The IRGC Navy followed with a statement declaring that "not a single drop of oil, gas, or chemical fertilizer will pass through the Strait of Hormuz without coordination and permission." Iran also conducted retaliatory strikes on Kuwait over the weekend, targeting an oil facility, power plants, and desalination infrastructure. The US-Iran conflict has killed 17 American service members since it began on February 28, 2026, including one killed Saturday by a drone strike in Iraq and two killed Friday in Jordan, per Rigzone wire reporting.

Malta-Flagged Kavomaleas Anchors Near Oman as Traffic Falls to Two-Month Low

Among the vessels halted was the Kavomaleas, a Malta-flagged, Greece-managed oil products tanker. It dropped anchor in the strait near Oman's Musandam Peninsula, approximately 8 nautical miles northwest of Kumzar, per OilPrice.com. Two of the four intercepted ships experienced what Iranian state sources described as "accidents" and were stopped in place. Tanker operators are now running in "dark mode" with AIS transponders disabled, and overall traffic has fallen to its lowest level in two months, per vessel-tracking data cited by OilPrice.com.

$655 Million in Daily Crude Trade Disrupted as Analysts Diverge on Trajectory

At current Brent prices of $88.61 per barrel, removing 7.4 million barrels per day from Hormuz throughput disrupts roughly $655 million of daily crude oil trade. The Strait of Hormuz carries approximately 20 percent of global oil supply under normal conditions, per the US Energy Information Administration. Naeem Aslam of Zaye Capital Markets said continued restrictions "could keep Brent supported above $90 and increase the risk of a move toward $100 per barrel." J.P. Morgan analysts countered that de-escalation remains their base case, characterizing a sustained mutual blockade as "a tail risk rather than our base case."

LNG Shipments Halt for Third Day as JKM Hits $20.20 Per MMBtu

The shipping disruption extends beyond crude oil. LNG shipments through the Strait of Hormuz appear to have stopped for the third consecutive day as of July 20, threatening Qatari LNG deliveries to Asian and European buyers, per OilPrice.com. The Japan-Korea Marker for LNG hit $20.20 per million British thermal units on July 16, up 10 percent in a single week and more than 60 percent year-on-year, per S&P Global Commodity Insights. That price spike means every additional day of halted LNG transit removes hundreds of millions of dollars of freight capacity from Asian spot markets.

Brent at $88.10 Yesterday, Overnight Move Above $90, Kuwait Struck for First Time

Oil Authority's July 19 report documented US strikes on Iranian infrastructure pushing Brent to $88.10, with the IMO and Japan's trade minister urging vessels to avoid the strait. Three developments since that report have shifted the risk picture. Iran has formally withdrawn from the military ceasefire, moving from active conflict to explicit strait closure threat. Kuwait, a GCC member state and significant OPEC producer, has been struck directly for the first time in this conflict. With Hormuz flows already at 5.1 million barrels per day, roughly 41 percent of their prior-week level, the market risk premium embedded in Brent has not yet returned to the $90 threshold hit in overnight trading.